diff options
Diffstat (limited to 'drivers/rtc')
131 files changed, 2168 insertions, 3396 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 48c536acd777..ce723dc54aa4 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -13,7 +13,7 @@ config RTC_MC146818_LIB menuconfig RTC_CLASS bool "Real Time Clock" default n - depends on !S390 && !UML + depends on !S390 select RTC_LIB help Generic RTC class support. If you say yes here, you will @@ -669,6 +669,16 @@ config RTC_DRV_RV3028 This driver can also be built as a module. If so, the module will be called rtc-rv3028. +config RTC_DRV_RV3032 + tristate "Micro Crystal RV3032" + select REGMAP_I2C + help + If you say yes here you get support for the Micro Crystal + RV3032. + + This driver can also be built as a module. If so, the module + will be called rtc-rv3032. + config RTC_DRV_RV8803 tristate "Micro Crystal RV8803, Epson RX8900" help @@ -682,6 +692,7 @@ config RTC_DRV_S5M tristate "Samsung S2M/S5M series" depends on MFD_SEC_CORE || COMPILE_TEST select REGMAP_IRQ + select REGMAP_I2C help If you say yes here you will get support for the RTC of Samsung S2MPS14 and S5M PMIC series. @@ -807,15 +818,6 @@ config RTC_DRV_RX4581 This driver can also be built as a module. If so the module will be called rtc-rx4581. -config RTC_DRV_RX6110 - tristate "Epson RX-6110" - select REGMAP_SPI - help - If you say yes here you will get support for the Epson RX-6610. - - This driver can also be built as a module. If so the module - will be called rtc-rx6110. - config RTC_DRV_RS5C348 tristate "Ricoh RS5C348A/B" help @@ -926,6 +928,17 @@ config RTC_DRV_RV3029_HWMON Say Y here if you want to expose temperature sensor data on rtc-rv3029. +config RTC_DRV_RX6110 + tristate "Epson RX-6110" + depends on RTC_I2C_AND_SPI + select REGMAP_SPI if SPI_MASTER + select REGMAP_I2C if I2C + help + If you say yes here you will get support for the Epson RX-6110. + + This driver can also be built as a module. If so the module + will be called rtc-rx6110. + comment "Platform RTC drivers" # this 'CMOS' RTC driver is arch dependent because it requires @@ -961,18 +974,6 @@ config RTC_DRV_ALPHA Direct support for the real-time clock found on every Alpha system, specifically MC146818 compatibles. If in doubt, say Y. -config RTC_DRV_VRTC - tristate "Virtual RTC for Intel MID platforms" - depends on X86_INTEL_MID - default y if X86_INTEL_MID - - help - Say "yes" here to get direct support for the real time clock - found on Moorestown platforms. The VRTC is a emulated RTC that - derives its clock source from a real RTC in the PMIC. The MC146818 - style programming interface is mostly conserved, but any - updates are done via IPC calls to the system controller FW. - config RTC_DRV_DS1216 tristate "Dallas DS1216" depends on SNI_RM @@ -1007,6 +1008,7 @@ config RTC_DRV_DS1553 config RTC_DRV_DS1685_FAMILY tristate "Dallas/Maxim DS1685 Family" + depends on HAS_IOMEM help If you say yes here you get support for the Dallas/Maxim DS1685 family of real time chips. This family includes the DS1685/DS1687, @@ -1140,6 +1142,7 @@ config RTC_DRV_STK17TA8 config RTC_DRV_M48T86 tristate "ST M48T86/Dallas DS12887" + depends on HAS_IOMEM help If you say Y here you will get support for the ST M48T86 and Dallas DS12887 RTC chips. @@ -1256,14 +1259,6 @@ config RTC_DRV_PCF50633 If you say yes here you get support for the RTC subsystem of the NXP PCF50633 used in embedded systems. -config RTC_DRV_AB3100 - tristate "ST-Ericsson AB3100 RTC" - depends on AB3100_CORE - default y if AB3100_CORE - help - Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC - support. This chip contains a battery- and capacitor-backed RTC. - config RTC_DRV_AB8500 tristate "ST-Ericsson AB8500 RTC" depends on AB8500_CORE @@ -1286,7 +1281,7 @@ config RTC_DRV_OPAL config RTC_DRV_ZYNQMP tristate "Xilinx Zynq Ultrascale+ MPSoC RTC" - depends on OF + depends on OF && HAS_IOMEM help If you say yes here you get support for the RTC controller found on Xilinx Zynq Ultrascale+ MPSoC. @@ -1573,13 +1568,6 @@ config RTC_DRV_STARFIRE If you say Y here you will get support for the RTC found on Starfire systems. -config RTC_DRV_TX4939 - tristate "TX4939 SoC" - depends on SOC_TX4939 || COMPILE_TEST - help - Driver for the internal RTC (Realtime Clock) module found on - Toshiba TX4939 SoC. - config RTC_DRV_MV tristate "Marvell SoC RTC" depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST @@ -1594,6 +1582,7 @@ config RTC_DRV_MV config RTC_DRV_ARMADA38X tristate "Armada 38x Marvell SoC RTC" depends on ARCH_MVEBU || COMPILE_TEST + depends on OF help If you say yes here you will get support for the in-chip RTC that can be found in the Armada 38x Marvell's SoC device @@ -1631,18 +1620,6 @@ config RTC_DRV_PS3 This driver can also be built as a module. If so, the module will be called rtc-ps3. -config RTC_DRV_COH901331 - tristate "ST-Ericsson COH 901 331 RTC" - depends on ARCH_U300 || COMPILE_TEST - help - If you say Y here you will get access to ST-Ericsson - COH 901 331 RTC clock found in some ST-Ericsson Mobile - Platforms. - - This driver can also be built as a module. If so, the module - will be called "rtc-coh901331". - - config RTC_DRV_STMP tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC" depends on ARCH_MXS || COMPILE_TEST @@ -1742,7 +1719,9 @@ config RTC_DRV_LOONGSON1 config RTC_DRV_MXC tristate "Freescale MXC Real Time Clock" - depends on ARCH_MXC + depends on ARCH_MXC || COMPILE_TEST + depends on HAS_IOMEM + depends on OF help If you say yes here you get support for the Freescale MXC RTC module. @@ -1752,7 +1731,9 @@ config RTC_DRV_MXC config RTC_DRV_MXC_V2 tristate "Freescale MXC Real Time Clock for i.MX53" - depends on ARCH_MXC + depends on ARCH_MXC || COMPILE_TEST + depends on HAS_IOMEM + depends on OF help If you say yes here you get support for the Freescale MXC SRTC module in i.MX53 processor. @@ -1781,13 +1762,6 @@ config RTC_DRV_IMX_SC If you say yes here you get support for the NXP i.MX System Controller RTC module. -config RTC_DRV_SIRFSOC - tristate "SiRFSOC RTC" - depends on ARCH_SIRF - help - Say "yes" here to support the real time clock on SiRF SOC chips. - This driver can also be built as a module called rtc-sirfsoc. - config RTC_DRV_ST_LPC tristate "STMicroelectronics LPC RTC" depends on ARCH_STI @@ -1925,7 +1899,6 @@ config RTC_DRV_HID_SENSOR_TIME config RTC_DRV_GOLDFISH tristate "Goldfish Real Time Clock" depends on OF && HAS_IOMEM - depends on GOLDFISH || COMPILE_TEST help Say yes to enable RTC driver for the Goldfish based virtual platform. diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 880e08a409c3..4e930183c170 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -6,7 +6,6 @@ ccflags-$(CONFIG_RTC_DEBUG) := -DDEBUG obj-$(CONFIG_RTC_LIB) += lib.o -obj-$(CONFIG_RTC_SYSTOHC) += systohc.o obj-$(CONFIG_RTC_CLASS) += rtc-core.o obj-$(CONFIG_RTC_MC146818_LIB) += rtc-mc146818-lib.o rtc-core-y := class.o interface.o @@ -20,7 +19,6 @@ rtc-core-$(CONFIG_RTC_INTF_SYSFS) += sysfs.o obj-$(CONFIG_RTC_DRV_88PM80X) += rtc-88pm80x.o obj-$(CONFIG_RTC_DRV_88PM860X) += rtc-88pm860x.o -obj-$(CONFIG_RTC_DRV_AB3100) += rtc-ab3100.o obj-$(CONFIG_RTC_DRV_AB8500) += rtc-ab8500.o obj-$(CONFIG_RTC_DRV_ABB5ZES3) += rtc-ab-b5ze-s3.o obj-$(CONFIG_RTC_DRV_ABEOZ9) += rtc-ab-eoz9.o @@ -39,7 +37,6 @@ obj-$(CONFIG_RTC_DRV_BQ4802) += rtc-bq4802.o obj-$(CONFIG_RTC_DRV_BRCMSTB) += rtc-brcmstb-waketimer.o obj-$(CONFIG_RTC_DRV_CADENCE) += rtc-cadence.o obj-$(CONFIG_RTC_DRV_CMOS) += rtc-cmos.o -obj-$(CONFIG_RTC_DRV_COH901331) += rtc-coh901331.o obj-$(CONFIG_RTC_DRV_CPCAP) += rtc-cpcap.o obj-$(CONFIG_RTC_DRV_CROS_EC) += rtc-cros-ec.o obj-$(CONFIG_RTC_DRV_DA9052) += rtc-da9052.o @@ -141,6 +138,7 @@ obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o obj-$(CONFIG_RTC_DRV_RTD119X) += rtc-rtd119x.o obj-$(CONFIG_RTC_DRV_RV3028) += rtc-rv3028.o obj-$(CONFIG_RTC_DRV_RV3029C2) += rtc-rv3029c2.o +obj-$(CONFIG_RTC_DRV_RV3032) += rtc-rv3032.o obj-$(CONFIG_RTC_DRV_RV8803) += rtc-rv8803.o obj-$(CONFIG_RTC_DRV_RX4581) += rtc-rx4581.o obj-$(CONFIG_RTC_DRV_RX6110) += rtc-rx6110.o @@ -154,7 +152,6 @@ obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o obj-$(CONFIG_RTC_DRV_SC27XX) += rtc-sc27xx.o obj-$(CONFIG_RTC_DRV_SD3078) += rtc-sd3078.o obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o -obj-$(CONFIG_RTC_DRV_SIRFSOC) += rtc-sirfsoc.o obj-$(CONFIG_RTC_DRV_SNVS) += rtc-snvs.o obj-$(CONFIG_RTC_DRV_SPEAR) += rtc-spear.o obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o @@ -171,10 +168,8 @@ obj-$(CONFIG_RTC_DRV_TPS6586X) += rtc-tps6586x.o obj-$(CONFIG_RTC_DRV_TPS65910) += rtc-tps65910.o obj-$(CONFIG_RTC_DRV_TPS80031) += rtc-tps80031.o obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o -obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o -obj-$(CONFIG_RTC_DRV_VRTC) += rtc-mrst.o obj-$(CONFIG_RTC_DRV_VT8500) += rtc-vt8500.o obj-$(CONFIG_RTC_DRV_WILCO_EC) += rtc-wilco-ec.o obj-$(CONFIG_RTC_DRV_WM831X) += rtc-wm831x.o diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index 7c88d190c51f..f77bc089eb6b 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -28,6 +28,7 @@ static void rtc_device_release(struct device *dev) struct rtc_device *rtc = to_rtc_device(dev); ida_simple_remove(&rtc_ida, rtc->id); + mutex_destroy(&rtc->ops_lock); kfree(rtc); } @@ -200,8 +201,13 @@ static struct rtc_device *rtc_allocate_device(void) device_initialize(&rtc->dev); - /* Drivers can revise this default after allocating the device. */ - rtc->set_offset_nsec = NSEC_PER_SEC / 2; + /* + * Drivers can revise this default after allocating the device. + * The default is what most RTCs do: Increment seconds exactly one + * second after the write happened. This adds a default transport + * time of 5ms which is at least halfways close to reality. + */ + rtc->set_offset_nsec = NSEC_PER_SEC + 5 * NSEC_PER_MSEC; rtc->irq_freq = 1; rtc->max_user_freq = 64; @@ -225,6 +231,8 @@ static struct rtc_device *rtc_allocate_device(void) rtc->pie_timer.function = rtc_pie_update_irq; rtc->pie_enabled = 0; + set_bit(RTC_FEATURE_ALARM, rtc->features); + return rtc; } @@ -316,13 +324,10 @@ static void rtc_device_get_offset(struct rtc_device *rtc) rtc->offset_secs = 0; } -/** - * rtc_device_unregister - removes the previously registered RTC class device - * - * @rtc: the RTC class device to destroy - */ -static void rtc_device_unregister(struct rtc_device *rtc) +static void devm_rtc_unregister_device(void *data) { + struct rtc_device *rtc = data; + mutex_lock(&rtc->ops_lock); /* * Remove innards of this RTC, then disable it, before @@ -332,60 +337,43 @@ static void rtc_device_unregister(struct rtc_device *rtc) cdev_device_del(&rtc->char_dev, &rtc->dev); rtc->ops = NULL; mutex_unlock(&rtc->ops_lock); - put_device(&rtc->dev); } -static void devm_rtc_release_device(struct device *dev, void *res) +static void devm_rtc_release_device(void *res) { - struct rtc_device *rtc = *(struct rtc_device **)res; - - rtc_nvmem_unregister(rtc); + struct rtc_device *rtc = res; - if (rtc->registered) - rtc_device_unregister(rtc); - else - put_device(&rtc->dev); + put_device(&rtc->dev); } struct rtc_device *devm_rtc_allocate_device(struct device *dev) { - struct rtc_device **ptr, *rtc; + struct rtc_device *rtc; int id, err; id = rtc_device_get_id(dev); if (id < 0) return ERR_PTR(id); - ptr = devres_alloc(devm_rtc_release_device, sizeof(*ptr), GFP_KERNEL); - if (!ptr) { - err = -ENOMEM; - goto exit_ida; - } - rtc = rtc_allocate_device(); if (!rtc) { - err = -ENOMEM; - goto exit_devres; + ida_simple_remove(&rtc_ida, id); + return ERR_PTR(-ENOMEM); } - *ptr = rtc; - devres_add(dev, ptr); - rtc->id = id; rtc->dev.parent = dev; dev_set_name(&rtc->dev, "rtc%d", id); - return rtc; + err = devm_add_action_or_reset(dev, devm_rtc_release_device, rtc); + if (err) + return ERR_PTR(err); -exit_devres: - devres_free(ptr); -exit_ida: - ida_simple_remove(&rtc_ida, id); - return ERR_PTR(err); + return rtc; } EXPORT_SYMBOL_GPL(devm_rtc_allocate_device); -int __rtc_register_device(struct module *owner, struct rtc_device *rtc) +int __devm_rtc_register_device(struct module *owner, struct rtc_device *rtc) { struct rtc_wkalrm alrm; int err; @@ -395,6 +383,9 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc) return -EINVAL; } + if (!rtc->ops->set_alarm) + clear_bit(RTC_FEATURE_ALARM, rtc->features); + rtc->owner = owner; rtc_device_get_offset(rtc); @@ -415,7 +406,6 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc) rtc_proc_add_device(rtc); - rtc->registered = true; dev_info(rtc->dev.parent, "registered as %s\n", dev_name(&rtc->dev)); @@ -424,9 +414,10 @@ int __rtc_register_device(struct module *owner, struct rtc_device *rtc) rtc_hctosys(rtc); #endif - return 0; + return devm_add_action_or_reset(rtc->dev.parent, + devm_rtc_unregister_device, rtc); } -EXPORT_SYMBOL_GPL(__rtc_register_device); +EXPORT_SYMBOL_GPL(__devm_rtc_register_device); /** * devm_rtc_device_register - resource managed rtc_device_register() @@ -456,7 +447,7 @@ struct rtc_device *devm_rtc_device_register(struct device *dev, rtc->ops = ops; - err = __rtc_register_device(owner, rtc); + err = __devm_rtc_register_device(owner, rtc); if (err) return ERR_PTR(err); diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 794a4f036b99..dcb34c73319e 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -186,7 +186,7 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, if (!rtc->ops) { err = -ENODEV; - } else if (!rtc->ops->read_alarm) { + } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->read_alarm) { err = -EINVAL; } else { alarm->enabled = 0; @@ -392,7 +392,7 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) return err; if (!rtc->ops) { err = -ENODEV; - } else if (!rtc->ops->read_alarm) { + } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->read_alarm) { err = -EINVAL; } else { memset(alarm, 0, sizeof(struct rtc_wkalrm)); @@ -436,7 +436,7 @@ static int __rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) if (!rtc->ops) err = -ENODEV; - else if (!rtc->ops->set_alarm) + else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) err = -EINVAL; else err = rtc->ops->set_alarm(rtc->dev.parent, alarm); @@ -451,7 +451,7 @@ int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) if (!rtc->ops) return -ENODEV; - else if (!rtc->ops->set_alarm) + else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) return -EINVAL; err = rtc_valid_tm(&alarm->time); @@ -531,7 +531,7 @@ int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled) /* nothing */; else if (!rtc->ops) err = -ENODEV; - else if (!rtc->ops->alarm_irq_enable) + else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->alarm_irq_enable) err = -EINVAL; else err = rtc->ops->alarm_irq_enable(rtc->dev.parent, enabled); @@ -843,7 +843,7 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) static void rtc_alarm_disable(struct rtc_device *rtc) { - if (!rtc->ops || !rtc->ops->alarm_irq_enable) + if (!rtc->ops || !test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->alarm_irq_enable) return; rtc->ops->alarm_irq_enable(rtc->dev.parent, false); diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c index 4312096c7738..07ede21cee34 100644 --- a/drivers/rtc/nvmem.c +++ b/drivers/rtc/nvmem.c @@ -9,99 +9,22 @@ #include <linux/types.h> #include <linux/nvmem-consumer.h> #include <linux/rtc.h> -#include <linux/slab.h> -#include <linux/sysfs.h> -/* - * Deprecated ABI compatibility, this should be removed at some point - */ - -static const char nvram_warning[] = "Deprecated ABI, please use nvmem"; - -static ssize_t -rtc_nvram_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, - char *buf, loff_t off, size_t count) -{ - dev_warn_once(kobj_to_dev(kobj), nvram_warning); - - return nvmem_device_read(attr->private, off, count, buf); -} - -static ssize_t -rtc_nvram_write(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, - char *buf, loff_t off, size_t count) -{ - dev_warn_once(kobj_to_dev(kobj), nvram_warning); - - return nvmem_device_write(attr->private, off, count, buf); -} - -static int rtc_nvram_register(struct rtc_device *rtc, - struct nvmem_device *nvmem, size_t size) -{ - int err; - - rtc->nvram = kzalloc(sizeof(*rtc->nvram), GFP_KERNEL); - if (!rtc->nvram) - return -ENOMEM; - - rtc->nvram->attr.name = "nvram"; - rtc->nvram->attr.mode = 0644; - rtc->nvram->private = nvmem; - - sysfs_bin_attr_init(rtc->nvram); - - rtc->nvram->read = rtc_nvram_read; - rtc->nvram->write = rtc_nvram_write; - rtc->nvram->size = size; - - err = sysfs_create_bin_file(&rtc->dev.parent->kobj, - rtc->nvram); - if (err) { - kfree(rtc->nvram); - rtc->nvram = NULL; - } - - return err; -} - -static void rtc_nvram_unregister(struct rtc_device *rtc) -{ - sysfs_remove_bin_file(&rtc->dev.parent->kobj, rtc->nvram); - kfree(rtc->nvram); - rtc->nvram = NULL; -} - -/* - * New ABI, uses nvmem - */ -int rtc_nvmem_register(struct rtc_device *rtc, +int devm_rtc_nvmem_register(struct rtc_device *rtc, struct nvmem_config *nvmem_config) { + struct device *dev = rtc->dev.parent; struct nvmem_device *nvmem; if (!nvmem_config) return -ENODEV; - nvmem_config->dev = rtc->dev.parent; + nvmem_config->dev = dev; nvmem_config->owner = rtc->owner; - nvmem = devm_nvmem_register(rtc->dev.parent, nvmem_config); + nvmem = devm_nvmem_register(dev, nvmem_config); if (IS_ERR(nvmem)) - return PTR_ERR(nvmem); - - /* Register the old ABI */ - if (rtc->nvram_old_abi) - rtc_nvram_register(rtc, nvmem, nvmem_config->size); + dev_err(dev, "failed to register nvmem device for RTC\n"); - return 0; -} -EXPORT_SYMBOL_GPL(rtc_nvmem_register); - -void rtc_nvmem_unregister(struct rtc_device *rtc) -{ - /* unregister the old ABI */ - if (rtc->nvram) - rtc_nvram_unregister(rtc); + return PTR_ERR_OR_ZERO(nvmem); } +EXPORT_SYMBOL_GPL(devm_rtc_nvmem_register); diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c index 75779e8501a3..6a3f44cf6ebe 100644 --- a/drivers/rtc/rtc-88pm80x.c +++ b/drivers/rtc/rtc-88pm80x.c @@ -294,7 +294,7 @@ static int pm80x_rtc_probe(struct platform_device *pdev) info->rtc_dev->ops = &pm80x_rtc_ops; info->rtc_dev->range_max = U32_MAX; - ret = rtc_register_device(info->rtc_dev); + ret = devm_rtc_register_device(info->rtc_dev); if (ret) goto out_rtc; diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c index c90457d001e9..2c809a1a445e 100644 --- a/drivers/rtc/rtc-88pm860x.c +++ b/drivers/rtc/rtc-88pm860x.c @@ -307,7 +307,7 @@ static int pm860x_rtc_probe(struct platform_device *pdev) info->rtc_dev->ops = &pm860x_rtc_ops; info->rtc_dev->range_max = U32_MAX; - ret = rtc_register_device(info->rtc_dev); + ret = devm_rtc_register_device(info->rtc_dev); if (ret) return ret; diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c index 2370ac0cdb5f..6e3e320dc727 100644 --- a/drivers/rtc/rtc-ab-b5ze-s3.c +++ b/drivers/rtc/rtc-ab-b5ze-s3.c @@ -892,7 +892,7 @@ static int abb5zes3_probe(struct i2c_client *client, } } - ret = rtc_register_device(data->rtc); + ret = devm_rtc_register_device(data->rtc); err: if (ret && data->irq) diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c index d690985caa4c..b20d8f26dcdb 100644 --- a/drivers/rtc/rtc-ab-eoz9.c +++ b/drivers/rtc/rtc-ab-eoz9.c @@ -420,7 +420,7 @@ static int abeoz9_probe(struct i2c_client *client, data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; data->rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(data->rtc); + ret = devm_rtc_register_device(data->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-ab3100.c b/drivers/rtc/rtc-ab3100.c deleted file mode 100644 index 2ed6def90975..000000000000 --- a/drivers/rtc/rtc-ab3100.c +++ /dev/null @@ -1,254 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2007-2009 ST-Ericsson AB - * RTC clock driver for the AB3100 Analog Baseband Chip - * Author: Linus Walleij <[email protected]> - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/rtc.h> -#include <linux/mfd/abx500.h> - -/* Clock rate in Hz */ -#define AB3100_RTC_CLOCK_RATE 32768 - -/* - * The AB3100 RTC registers. These are the same for - * AB3000 and AB3100. - * Control register: - * Bit 0: RTC Monitor cleared=0, active=1, if you set it - * to 1 it remains active until RTC power is lost. - * Bit 1: 32 kHz Oscillator, 0 = on, 1 = bypass - * Bit 2: Alarm on, 0 = off, 1 = on - * Bit 3: 32 kHz buffer disabling, 0 = enabled, 1 = disabled - */ -#define AB3100_RTC 0x53 -/* default setting, buffer disabled, alarm on */ -#define RTC_SETTING 0x30 -/* Alarm when AL0-AL3 == TI0-TI3 */ -#define AB3100_AL0 0x56 -#define AB3100_AL1 0x57 -#define AB3100_AL2 0x58 -#define AB3100_AL3 0x59 -/* This 48-bit register that counts up at 32768 Hz */ -#define AB3100_TI0 0x5a -#define AB3100_TI1 0x5b -#define AB3100_TI2 0x5c -#define AB3100_TI3 0x5d -#define AB3100_TI4 0x5e -#define AB3100_TI5 0x5f - -/* - * RTC clock functions and device struct declaration - */ -static int ab3100_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - u8 regs[] = {AB3100_TI0, AB3100_TI1, AB3100_TI2, - AB3100_TI3, AB3100_TI4, AB3100_TI5}; - unsigned char buf[6]; - u64 hw_counter = rtc_tm_to_time64(tm) * AB3100_RTC_CLOCK_RATE * 2; - int err = 0; - int i; - - buf[0] = (hw_counter) & 0xFF; - buf[1] = (hw_counter >> 8) & 0xFF; - buf[2] = (hw_counter >> 16) & 0xFF; - buf[3] = (hw_counter >> 24) & 0xFF; - buf[4] = (hw_counter >> 32) & 0xFF; - buf[5] = (hw_counter >> 40) & 0xFF; - - for (i = 0; i < 6; i++) { - err = abx500_set_register_interruptible(dev, 0, - regs[i], buf[i]); - if (err) - return err; - } - - /* Set the flag to mark that the clock is now set */ - return abx500_mask_and_set_register_interruptible(dev, 0, - AB3100_RTC, - 0x01, 0x01); - -} - -static int ab3100_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - time64_t time; - u8 rtcval; - int err; - - err = abx500_get_register_interruptible(dev, 0, - AB3100_RTC, &rtcval); - if (err) - return err; - - if (!(rtcval & 0x01)) { - dev_info(dev, "clock not set (lost power)"); - return -EINVAL; - } else { - u64 hw_counter; - u8 buf[6]; - - /* Read out time registers */ - err = abx500_get_register_page_interruptible(dev, 0, - AB3100_TI0, - buf, 6); - if (err != 0) - return err; - - hw_counter = ((u64) buf[5] << 40) | ((u64) buf[4] << 32) | - ((u64) buf[3] << 24) | ((u64) buf[2] << 16) | - ((u64) buf[1] << 8) | (u64) buf[0]; - time = hw_counter / (u64) (AB3100_RTC_CLOCK_RATE * 2); - } - - rtc_time64_to_tm(time, tm); - - return 0; -} - -static int ab3100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - time64_t time; - u64 hw_counter; - u8 buf[6]; - u8 rtcval; - int err; - - /* Figure out if alarm is enabled or not */ - err = abx500_get_register_interruptible(dev, 0, - AB3100_RTC, &rtcval); - if (err) - return err; - if (rtcval & 0x04) - alarm->enabled = 1; - else - alarm->enabled = 0; - /* No idea how this could be represented */ - alarm->pending = 0; - /* Read out alarm registers, only 4 bytes */ - err = abx500_get_register_page_interruptible(dev, 0, - AB3100_AL0, buf, 4); - if (err) - return err; - hw_counter = ((u64) buf[3] << 40) | ((u64) buf[2] << 32) | - ((u64) buf[1] << 24) | ((u64) buf[0] << 16); - time = hw_counter / (u64) (AB3100_RTC_CLOCK_RATE * 2); - - rtc_time64_to_tm(time, &alarm->time); - - return rtc_valid_tm(&alarm->time); -} - -static int ab3100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - u8 regs[] = {AB3100_AL0, AB3100_AL1, AB3100_AL2, AB3100_AL3}; - unsigned char buf[4]; - time64_t secs; - u64 hw_counter; - int err; - int i; - - secs = rtc_tm_to_time64(&alarm->time); - hw_counter = secs * AB3100_RTC_CLOCK_RATE * 2; - buf[0] = (hw_counter >> 16) & 0xFF; - buf[1] = (hw_counter >> 24) & 0xFF; - buf[2] = (hw_counter >> 32) & 0xFF; - buf[3] = (hw_counter >> 40) & 0xFF; - - /* Set the alarm */ - for (i = 0; i < 4; i++) { - err = abx500_set_register_interruptible(dev, 0, - regs[i], buf[i]); - if (err) - return err; - } - /* Then enable the alarm */ - return abx500_mask_and_set_register_interruptible(dev, 0, - AB3100_RTC, (1 << 2), - alarm->enabled << 2); -} - -static int ab3100_rtc_irq_enable(struct device *dev, unsigned int enabled) -{ - /* - * It's not possible to enable/disable the alarm IRQ for this RTC. - * It does not actually trigger any IRQ: instead its only function is - * to power up the system, if it wasn't on. This will manifest as - * a "power up cause" in the AB3100 power driver (battery charging etc) - * and need to be handled there instead. - */ - if (enabled) - return abx500_mask_and_set_register_interruptible(dev, 0, - AB3100_RTC, (1 << 2), - 1 << 2); - else - return abx500_mask_and_set_register_interruptible(dev, 0, - AB3100_RTC, (1 << 2), - 0); -} - -static const struct rtc_class_ops ab3100_rtc_ops = { - .read_time = ab3100_rtc_read_time, - .set_time = ab3100_rtc_set_time, - .read_alarm = ab3100_rtc_read_alarm, - .set_alarm = ab3100_rtc_set_alarm, - .alarm_irq_enable = ab3100_rtc_irq_enable, -}; - -static int __init ab3100_rtc_probe(struct platform_device *pdev) -{ - int err; - u8 regval; - struct rtc_device *rtc; - - /* The first RTC register needs special treatment */ - err = abx500_get_register_interruptible(&pdev->dev, 0, - AB3100_RTC, ®val); - if (err) { - dev_err(&pdev->dev, "unable to read RTC register\n"); - return -ENODEV; - } - - if ((regval & 0xFE) != RTC_SETTING) { - dev_warn(&pdev->dev, "not default value in RTC reg 0x%x\n", - regval); - } - - if ((regval & 1) == 0) { - /* - * Set bit to detect power loss. - * This bit remains until RTC power is lost. - */ - regval = 1 | RTC_SETTING; - err = abx500_set_register_interruptible(&pdev->dev, 0, - AB3100_RTC, regval); - /* Ignore any error on this write */ - } - - rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); - - rtc->ops = &ab3100_rtc_ops; - /* 48bit counter at (AB3100_RTC_CLOCK_RATE * 2) */ - rtc->range_max = U32_MAX; - - platform_set_drvdata(pdev, rtc); - - return rtc_register_device(rtc); -} - -static struct platform_driver ab3100_rtc_driver = { - .driver = { - .name = "ab3100-rtc", - }, -}; - -module_platform_driver_probe(ab3100_rtc_driver, ab3100_rtc_probe); - -MODULE_AUTHOR("Linus Walleij <[email protected]>"); -MODULE_DESCRIPTION("AB3100 RTC Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c index 3d60f3283f11..b40048871295 100644 --- a/drivers/rtc/rtc-ab8500.c +++ b/drivers/rtc/rtc-ab8500.c @@ -404,7 +404,7 @@ static int ab8500_rtc_probe(struct platform_device *pdev) if (err) return err; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static int ab8500_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c index 803725b3a02c..9b0138d07232 100644 --- a/drivers/rtc/rtc-abx80x.c +++ b/drivers/rtc/rtc-abx80x.c @@ -117,6 +117,16 @@ struct abx80x_priv { struct watchdog_device wdog; }; +static int abx80x_write_config_key(struct i2c_client *client, u8 key) +{ + if (i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, key) < 0) { + dev_err(&client->dev, "Unable to write configuration key\n"); + return -EIO; + } + + return 0; +} + static int abx80x_is_rc_mode(struct i2c_client *client) { int flags = 0; @@ -140,12 +150,8 @@ static int abx80x_enable_trickle_charger(struct i2c_client *client, * Write the configuration key register to enable access to the Trickle * register */ - err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, - ABX8XX_CFG_KEY_MISC); - if (err < 0) { - dev_err(&client->dev, "Unable to write configuration key\n"); + if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_MISC) < 0) return -EIO; - } err = i2c_smbus_write_byte_data(client, ABX8XX_REG_TRICKLE, ABX8XX_TRICKLE_CHARGE_ENABLE | @@ -358,12 +364,8 @@ static int abx80x_rtc_set_autocalibration(struct device *dev, } /* Unlock write access to Oscillator Control Register */ - retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, - ABX8XX_CFG_KEY_OSC); - if (retval < 0) { - dev_err(dev, "Failed to write CONFIG_KEY register\n"); - return retval; - } + if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_OSC) < 0) + return -EIO; retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags); @@ -450,12 +452,8 @@ static ssize_t oscillator_store(struct device *dev, flags |= (ABX8XX_OSC_OSEL); /* Unlock write access on Oscillator Control register */ - retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, - ABX8XX_CFG_KEY_OSC); - if (retval < 0) { - dev_err(dev, "Failed to write CONFIG_KEY register\n"); - return retval; - } + if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_OSC) < 0) + return -EIO; retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags); if (retval < 0) { @@ -762,13 +760,8 @@ static int abx80x_probe(struct i2c_client *client, * Write the configuration key register to enable access to * the config2 register */ - err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, - ABX8XX_CFG_KEY_MISC); - if (err < 0) { - dev_err(&client->dev, - "Unable to write configuration key\n"); + if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_MISC) < 0) return -EIO; - } err = i2c_smbus_write_byte_data(client, ABX8XX_REG_OUT_CTRL, data | ABX8XX_OUT_CTRL_EXDS); @@ -851,7 +844,7 @@ static int abx80x_probe(struct i2c_client *client, return err; } - return rtc_register_device(priv->rtc); + return devm_rtc_register_device(priv->rtc); } static const struct i2c_device_id abx80x_id[] = { diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c index 29223931aba7..66783cb5e711 100644 --- a/drivers/rtc/rtc-ac100.c +++ b/drivers/rtc/rtc-ac100.c @@ -528,7 +528,7 @@ static irqreturn_t ac100_rtc_irq(int irq, void *data) unsigned int val = 0; int ret; - mutex_lock(&chip->rtc->ops_lock); + rtc_lock(chip->rtc); /* read status */ ret = regmap_read(regmap, AC100_ALM_INT_STA, &val); @@ -551,7 +551,7 @@ static irqreturn_t ac100_rtc_irq(int irq, void *data) } out: - mutex_unlock(&chip->rtc->ops_lock); + rtc_unlock(chip->rtc); return IRQ_HANDLED; } @@ -610,7 +610,7 @@ static int ac100_rtc_probe(struct platform_device *pdev) if (ret) return ret; - return rtc_register_device(chip->rtc); + return devm_rtc_register_device(chip->rtc); } static int ac100_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-armada38x.c b/drivers/rtc/rtc-armada38x.c index 94d7c22fc4f3..cc542e6b1d5b 100644 --- a/drivers/rtc/rtc-armada38x.c +++ b/drivers/rtc/rtc-armada38x.c @@ -458,14 +458,6 @@ static const struct rtc_class_ops armada38x_rtc_ops = { .set_offset = armada38x_rtc_set_offset, }; -static const struct rtc_class_ops armada38x_rtc_ops_noirq = { - .read_time = armada38x_rtc_read_time, - .set_time = armada38x_rtc_set_time, - .read_alarm = armada38x_rtc_read_alarm, - .read_offset = armada38x_rtc_read_offset, - .set_offset = armada38x_rtc_set_offset, -}; - static const struct armada38x_rtc_data armada38x_data = { .update_mbus_timing = rtc_update_38x_mbus_timing_params, .read_rtc_reg = read_rtc_register_38x_wa, @@ -540,23 +532,18 @@ static __init int armada38x_rtc_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, rtc); - if (rtc->irq != -1) { + if (rtc->irq != -1) device_init_wakeup(&pdev->dev, 1); - rtc->rtc_dev->ops = &armada38x_rtc_ops; - } else { - /* - * If there is no interrupt available then we can't - * use the alarm - */ - rtc->rtc_dev->ops = &armada38x_rtc_ops_noirq; - } + else + clear_bit(RTC_FEATURE_ALARM, rtc->rtc_dev->features); /* Update RTC-MBUS bridge timing parameters */ rtc->data->update_mbus_timing(rtc); + rtc->rtc_dev->ops = &armada38x_rtc_ops; rtc->rtc_dev->range_max = U32_MAX; - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-asm9260.c b/drivers/rtc/rtc-asm9260.c index 3ab81cdec00b..de795e489f71 100644 --- a/drivers/rtc/rtc-asm9260.c +++ b/drivers/rtc/rtc-asm9260.c @@ -116,15 +116,15 @@ static irqreturn_t asm9260_rtc_irq(int irq, void *dev_id) u32 isr; unsigned long events = 0; - mutex_lock(&priv->rtc->ops_lock); + rtc_lock(priv->rtc); isr = ioread32(priv->iobase + HW_CIIR); if (!isr) { - mutex_unlock(&priv->rtc->ops_lock); + rtc_unlock(priv->rtc); return IRQ_NONE; } iowrite32(0, priv->iobase + HW_CIIR); - mutex_unlock(&priv->rtc->ops_lock); + rtc_unlock(priv->rtc); events |= RTC_AF | RTC_IRQF; diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c index eacdd0637cce..a93352ed3aec 100644 --- a/drivers/rtc/rtc-aspeed.c +++ b/drivers/rtc/rtc-aspeed.c @@ -104,7 +104,7 @@ static int aspeed_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900; rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */ - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } static const struct of_device_id aspeed_rtc_match[] = { diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 5e811e04cb21..fe396d27ebb7 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -36,6 +36,10 @@ #define AT91_RTC_UPDCAL BIT(1) /* Update Request Calendar Register */ #define AT91_RTC_MR 0x04 /* Mode Register */ +#define AT91_RTC_HRMOD BIT(0) /* 12/24 hour mode */ +#define AT91_RTC_NEGPPM BIT(4) /* Negative PPM correction */ +#define AT91_RTC_CORRECTION GENMASK(14, 8) /* Slow clock correction */ +#define AT91_RTC_HIGHPPM BIT(15) /* High PPM correction */ #define AT91_RTC_TIMR 0x08 /* Time Register */ #define AT91_RTC_SEC GENMASK(6, 0) /* Current Second */ @@ -77,6 +81,9 @@ #define AT91_RTC_NVTIMALR BIT(2) /* Non valid Time Alarm */ #define AT91_RTC_NVCALALR BIT(3) /* Non valid Calendar Alarm */ +#define AT91_RTC_CORR_DIVIDEND 3906000 +#define AT91_RTC_CORR_LOW_RATIO 20 + #define at91_rtc_read(field) \ readl_relaxed(at91_rtc_regs + field) #define at91_rtc_write(field, val) \ @@ -84,6 +91,7 @@ struct at91_rtc_config { bool use_shadow_imr; + bool has_correction; }; static const struct at91_rtc_config *at91_rtc_config; @@ -293,6 +301,75 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) return 0; } +static int at91_rtc_readoffset(struct device *dev, long *offset) +{ + u32 mr = at91_rtc_read(AT91_RTC_MR); + long val = FIELD_GET(AT91_RTC_CORRECTION, mr); + + if (!val) { + *offset = 0; + return 0; + } + + val++; + + if (!(mr & AT91_RTC_NEGPPM)) + val = -val; + + if (!(mr & AT91_RTC_HIGHPPM)) + val *= AT91_RTC_CORR_LOW_RATIO; + + *offset = DIV_ROUND_CLOSEST(AT91_RTC_CORR_DIVIDEND, val); + + return 0; +} + +static int at91_rtc_setoffset(struct device *dev, long offset) +{ + long corr; + u32 mr; + + if (offset > AT91_RTC_CORR_DIVIDEND / 2) + return -ERANGE; + if (offset < -AT91_RTC_CORR_DIVIDEND / 2) + return -ERANGE; + + mr = at91_rtc_read(AT91_RTC_MR); + mr &= ~(AT91_RTC_NEGPPM | AT91_RTC_CORRECTION | AT91_RTC_HIGHPPM); + + if (offset > 0) + mr |= AT91_RTC_NEGPPM; + else + offset = -offset; + + /* offset less than 764 ppb, disable correction*/ + if (offset < 764) { + at91_rtc_write(AT91_RTC_MR, mr & ~AT91_RTC_NEGPPM); + + return 0; + } + + /* + * 29208 ppb is the perfect cutoff between low range and high range + * low range values are never better than high range value after that. + */ + if (offset < 29208) { + corr = DIV_ROUND_CLOSEST(AT91_RTC_CORR_DIVIDEND, offset * AT91_RTC_CORR_LOW_RATIO); + } else { + corr = DIV_ROUND_CLOSEST(AT91_RTC_CORR_DIVIDEND, offset); + mr |= AT91_RTC_HIGHPPM; + } + + if (corr > 128) + corr = 128; + + mr |= FIELD_PREP(AT91_RTC_CORRECTION, corr - 1); + + at91_rtc_write(AT91_RTC_MR, mr); + + return 0; +} + /* * IRQ handler for the RTC */ @@ -343,6 +420,10 @@ static const struct at91_rtc_config at91sam9x5_config = { .use_shadow_imr = true, }; +static const struct at91_rtc_config sama5d4_config = { + .has_correction = true, +}; + static const struct of_device_id at91_rtc_dt_ids[] = { { .compatible = "atmel,at91rm9200-rtc", @@ -352,10 +433,13 @@ static const struct of_device_id at91_rtc_dt_ids[] = { .data = &at91sam9x5_config, }, { .compatible = "atmel,sama5d4-rtc", - .data = &at91rm9200_config, + .data = &sama5d4_config, }, { .compatible = "atmel,sama5d2-rtc", - .data = &at91rm9200_config, + .data = &sama5d4_config, + }, { + .compatible = "microchip,sam9x60-rtc", + .data = &sama5d4_config, }, { /* sentinel */ } @@ -370,6 +454,16 @@ static const struct rtc_class_ops at91_rtc_ops = { .alarm_irq_enable = at91_rtc_alarm_irq_enable, }; +static const struct rtc_class_ops sama5d4_rtc_ops = { + .read_time = at91_rtc_readtime, + .set_time = at91_rtc_settime, + .read_alarm = at91_rtc_readalarm, + .set_alarm = at91_rtc_setalarm, + .alarm_irq_enable = at91_rtc_alarm_irq_enable, + .set_offset = at91_rtc_setoffset, + .read_offset = at91_rtc_readoffset, +}; + /* * Initialize and install RTC driver */ @@ -416,7 +510,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) } at91_rtc_write(AT91_RTC_CR, 0); - at91_rtc_write(AT91_RTC_MR, 0); /* 24 hour mode */ + at91_rtc_write(AT91_RTC_MR, at91_rtc_read(AT91_RTC_MR) & ~AT91_RTC_HRMOD); /* Disable all interrupts */ at91_rtc_write_idr(AT91_RTC_ACKUPD | AT91_RTC_ALARM | @@ -437,10 +531,14 @@ static int __init at91_rtc_probe(struct platform_device *pdev) if (!device_can_wakeup(&pdev->dev)) device_init_wakeup(&pdev->dev, 1); - rtc->ops = &at91_rtc_ops; + if (at91_rtc_config->has_correction) + rtc->ops = &sama5d4_rtc_ops; + else + rtc->ops = &at91_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_1900; rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(rtc); + ret = devm_rtc_register_device(rtc); if (ret) goto err_clk; diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index e39e89867d29..2216be429ab7 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -431,7 +431,7 @@ static int at91_rtc_probe(struct platform_device *pdev) dev_warn(&pdev->dev, "%s: SET TIME!\n", dev_name(&rtc->rtcdev->dev)); - return rtc_register_device(rtc->rtcdev); + return devm_rtc_register_device(rtc->rtcdev); err_clk: clk_disable_unprepare(rtc->sclk); diff --git a/drivers/rtc/rtc-au1xxx.c b/drivers/rtc/rtc-au1xxx.c index 791bebcb6f47..e6428b27b5d4 100644 --- a/drivers/rtc/rtc-au1xxx.c +++ b/drivers/rtc/rtc-au1xxx.c @@ -104,7 +104,7 @@ static int au1xtoy_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtcdev); - return rtc_register_device(rtcdev); + return devm_rtc_register_device(rtcdev); } static struct platform_driver au1xrtc_driver = { diff --git a/drivers/rtc/rtc-bd70528.c b/drivers/rtc/rtc-bd70528.c index 4492b770422c..17cb67f5bf6e 100644 --- a/drivers/rtc/rtc-bd70528.c +++ b/drivers/rtc/rtc-bd70528.c @@ -604,7 +604,7 @@ static int bd70528_probe(struct platform_device *pdev) } } - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static const struct platform_device_id bd718x7_rtc_id[] = { diff --git a/drivers/rtc/rtc-bq32k.c b/drivers/rtc/rtc-bq32k.c index 933e4237237d..2235c968842d 100644 --- a/drivers/rtc/rtc-bq32k.c +++ b/drivers/rtc/rtc-bq32k.c @@ -311,7 +311,7 @@ static const struct i2c_device_id bq32k_id[] = { }; MODULE_DEVICE_TABLE(i2c, bq32k_id); -static const struct of_device_id bq32k_of_match[] = { +static const __maybe_unused struct of_device_id bq32k_of_match[] = { { .compatible = "ti,bq32000" }, { } }; diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c index 4fee57c51280..c74130e8f496 100644 --- a/drivers/rtc/rtc-brcmstb-waketimer.c +++ b/drivers/rtc/rtc-brcmstb-waketimer.c @@ -252,7 +252,7 @@ static int brcmstb_waketmr_probe(struct platform_device *pdev) timer->rtc->ops = &brcmstb_waketmr_ops; timer->rtc->range_max = U32_MAX; - ret = rtc_register_device(timer->rtc); + ret = devm_rtc_register_device(timer->rtc); if (ret) goto err_notifier; @@ -264,8 +264,7 @@ err_notifier: unregister_reboot_notifier(&timer->reboot_notifier); err_clk: - if (timer->clk) - clk_disable_unprepare(timer->clk); + clk_disable_unprepare(timer->clk); return ret; } @@ -307,7 +306,7 @@ static int brcmstb_waketmr_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(brcmstb_waketmr_pm_ops, brcmstb_waketmr_suspend, brcmstb_waketmr_resume); -static const struct of_device_id brcmstb_waketmr_of_match[] = { +static const __maybe_unused struct of_device_id brcmstb_waketmr_of_match[] = { { .compatible = "brcm,brcmstb-waketimer" }, { /* sentinel */ }, }; diff --git a/drivers/rtc/rtc-cadence.c b/drivers/rtc/rtc-cadence.c index 595d5d252850..1edf7f16d73a 100644 --- a/drivers/rtc/rtc-cadence.c +++ b/drivers/rtc/rtc-cadence.c @@ -336,7 +336,7 @@ static int cdns_rtc_probe(struct platform_device *pdev) writel(0, crtc->regs + CDNS_RTC_HMR); writel(CDNS_RTC_KRTCR_KRTC, crtc->regs + CDNS_RTC_KRTCR); - ret = rtc_register_device(crtc->rtc_dev); + ret = devm_rtc_register_device(crtc->rtc_dev); if (ret) goto err_disable_wakeup; diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index bcc96ab7793f..670fd8a2970e 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -574,12 +574,6 @@ static const struct rtc_class_ops cmos_rtc_ops = { .alarm_irq_enable = cmos_alarm_irq_enable, }; -static const struct rtc_class_ops cmos_rtc_ops_no_alarm = { - .read_time = cmos_read_time, - .set_time = cmos_set_time, - .proc = cmos_procfs, -}; - /*----------------------------------------------------------------*/ /* @@ -649,11 +643,10 @@ static struct cmos_rtc cmos_rtc; static irqreturn_t cmos_interrupt(int irq, void *p) { - unsigned long flags; u8 irqstat; u8 rtc_control; - spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&rtc_lock); /* When the HPET interrupt handler calls us, the interrupt * status is passed as arg1 instead of the irq number. But @@ -687,7 +680,7 @@ static irqreturn_t cmos_interrupt(int irq, void *p) hpet_mask_rtc_irq_bit(RTC_AIE); CMOS_READ(RTC_INTR_FLAGS); } - spin_unlock_irqrestore(&rtc_lock, flags); + spin_unlock(&rtc_lock); if (is_intr(irqstat)) { rtc_update_irq(p, 1, irqstat); @@ -805,6 +798,14 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) spin_lock_irq(&rtc_lock); + /* Ensure that the RTC is accessible. Bit 6 must be 0! */ + if ((CMOS_READ(RTC_VALID) & 0x40) != 0) { + spin_unlock_irq(&rtc_lock); + dev_warn(dev, "not accessible\n"); + retval = -ENXIO; + goto cleanup1; + } + if (!(flags & CMOS_RTC_FLAGS_NOFREQ)) { /* force periodic irq to CMOS reset default of 1024Hz; * @@ -857,21 +858,22 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq); goto cleanup1; } - - cmos_rtc.rtc->ops = &cmos_rtc_ops; } else { - cmos_rtc.rtc->ops = &cmos_rtc_ops_no_alarm; + clear_bit(RTC_FEATURE_ALARM, cmos_rtc.rtc->features); } - cmos_rtc.rtc->nvram_old_abi = true; - retval = rtc_register_device(cmos_rtc.rtc); + cmos_rtc.rtc->ops = &cmos_rtc_ops; + + retval = devm_rtc_register_device(cmos_rtc.rtc); if (retval) goto cleanup2; + /* Set the sync offset for the periodic 11min update correct */ + cmos_rtc.rtc->set_offset_nsec = NSEC_PER_SEC / 2; + /* export at least the first block of NVRAM */ nvmem_cfg.size = address_space - NVRAM_OFFSET; - if (rtc_nvmem_register(cmos_rtc.rtc, &nvmem_cfg)) - dev_err(dev, "nvmem registration failed\n"); + devm_rtc_nvmem_register(cmos_rtc.rtc, &nvmem_cfg); dev_info(dev, "%s%s, %d bytes nvram%s\n", !is_valid_irq(rtc_irq) ? "no alarms" : @@ -1006,6 +1008,7 @@ static int cmos_suspend(struct device *dev) enable_irq_wake(cmos->irq); } + memset(&cmos->saved_wkalrm, 0, sizeof(struct rtc_wkalrm)); cmos_read_alarm(dev, &cmos->saved_wkalrm); dev_dbg(dev, "suspend%s, ctrl %02x\n", @@ -1054,6 +1057,7 @@ static void cmos_check_wkalrm(struct device *dev) return; } + memset(¤t_alarm, 0, sizeof(struct rtc_wkalrm)); cmos_read_alarm(dev, ¤t_alarm); t_current_expires = rtc_tm_to_time64(¤t_alarm.time); t_saved_expires = rtc_tm_to_time64(&cmos->saved_wkalrm.time); diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c deleted file mode 100644 index da59917c9ee8..000000000000 --- a/drivers/rtc/rtc-coh901331.c +++ /dev/null @@ -1,290 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2007-2009 ST-Ericsson AB - * Real Time Clock interface for ST-Ericsson AB COH 901 331 RTC. - * Author: Linus Walleij <[email protected]> - * Based on rtc-pl031.c by Deepak Saxena <[email protected]> - * Copyright 2006 (c) MontaVista Software, Inc. - */ -#include <linux/init.h> -#include <linux/module.h> -#include <linux/mod_devicetable.h> -#include <linux/rtc.h> -#include <linux/clk.h> -#include <linux/interrupt.h> -#include <linux/pm.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/slab.h> - -/* - * Registers in the COH 901 331 - */ -/* Alarm value 32bit (R/W) */ -#define COH901331_ALARM 0x00U -/* Used to set current time 32bit (R/W) */ -#define COH901331_SET_TIME 0x04U -/* Indication if current time is valid 32bit (R/-) */ -#define COH901331_VALID 0x08U -/* Read the current time 32bit (R/-) */ -#define COH901331_CUR_TIME 0x0cU -/* Event register for the "alarm" interrupt */ -#define COH901331_IRQ_EVENT 0x10U -/* Mask register for the "alarm" interrupt */ -#define COH901331_IRQ_MASK 0x14U -/* Force register for the "alarm" interrupt */ -#define COH901331_IRQ_FORCE 0x18U - -/* - * Reference to RTC block clock - * Notice that the frequent clk_enable()/clk_disable() on this - * clock is mainly to be able to turn on/off other clocks in the - * hierarchy as needed, the RTC clock is always on anyway. - */ -struct coh901331_port { - struct rtc_device *rtc; - struct clk *clk; - void __iomem *virtbase; - int irq; -#ifdef CONFIG_PM_SLEEP - u32 irqmaskstore; -#endif -}; - -static irqreturn_t coh901331_interrupt(int irq, void *data) -{ - struct coh901331_port *rtap = data; - - clk_enable(rtap->clk); - /* Ack IRQ */ - writel(1, rtap->virtbase + COH901331_IRQ_EVENT); - /* - * Disable the interrupt. This is necessary because - * the RTC lives on a lower-clocked line and will - * not release the IRQ line until after a few (slower) - * clock cycles. The interrupt will be re-enabled when - * a new alarm is set anyway. - */ - writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - - /* Set alarm flag */ - rtc_update_irq(rtap->rtc, 1, RTC_AF); - - return IRQ_HANDLED; -} - -static int coh901331_read_time(struct device *dev, struct rtc_time *tm) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - - clk_enable(rtap->clk); - /* Check if the time is valid */ - if (!readl(rtap->virtbase + COH901331_VALID)) { - clk_disable(rtap->clk); - return -EINVAL; - } - - rtc_time64_to_tm(readl(rtap->virtbase + COH901331_CUR_TIME), tm); - clk_disable(rtap->clk); - return 0; -} - -static int coh901331_set_time(struct device *dev, struct rtc_time *tm) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - - clk_enable(rtap->clk); - writel(rtc_tm_to_time64(tm), rtap->virtbase + COH901331_SET_TIME); - clk_disable(rtap->clk); - - return 0; -} - -static int coh901331_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - - clk_enable(rtap->clk); - rtc_time64_to_tm(readl(rtap->virtbase + COH901331_ALARM), &alarm->time); - alarm->pending = readl(rtap->virtbase + COH901331_IRQ_EVENT) & 1U; - alarm->enabled = readl(rtap->virtbase + COH901331_IRQ_MASK) & 1U; - clk_disable(rtap->clk); - - return 0; -} - -static int coh901331_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - unsigned long time = rtc_tm_to_time64(&alarm->time); - - clk_enable(rtap->clk); - writel(time, rtap->virtbase + COH901331_ALARM); - writel(alarm->enabled, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - - return 0; -} - -static int coh901331_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - - clk_enable(rtap->clk); - if (enabled) - writel(1, rtap->virtbase + COH901331_IRQ_MASK); - else - writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - - return 0; -} - -static const struct rtc_class_ops coh901331_ops = { - .read_time = coh901331_read_time, - .set_time = coh901331_set_time, - .read_alarm = coh901331_read_alarm, - .set_alarm = coh901331_set_alarm, - .alarm_irq_enable = coh901331_alarm_irq_enable, -}; - -static int __exit coh901331_remove(struct platform_device *pdev) -{ - struct coh901331_port *rtap = platform_get_drvdata(pdev); - - if (rtap) - clk_unprepare(rtap->clk); - - return 0; -} - - -static int __init coh901331_probe(struct platform_device *pdev) -{ - int ret; - struct coh901331_port *rtap; - - rtap = devm_kzalloc(&pdev->dev, - sizeof(struct coh901331_port), GFP_KERNEL); - if (!rtap) - return -ENOMEM; - - rtap->virtbase = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(rtap->virtbase)) - return PTR_ERR(rtap->virtbase); - - rtap->irq = platform_get_irq(pdev, 0); - if (devm_request_irq(&pdev->dev, rtap->irq, coh901331_interrupt, 0, - "RTC COH 901 331 Alarm", rtap)) - return -EIO; - - rtap->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(rtap->clk)) { - ret = PTR_ERR(rtap->clk); - dev_err(&pdev->dev, "could not get clock\n"); - return ret; - } - - rtap->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(rtap->rtc)) - return PTR_ERR(rtap->rtc); - - rtap->rtc->ops = &coh901331_ops; - rtap->rtc->range_max = U32_MAX; - - /* We enable/disable the clock only to assure it works */ - ret = clk_prepare_enable(rtap->clk); - if (ret) { - dev_err(&pdev->dev, "could not enable clock\n"); - return ret; - } - clk_disable(rtap->clk); - - platform_set_drvdata(pdev, rtap); - - ret = rtc_register_device(rtap->rtc); - if (ret) - goto out_no_rtc; - - return 0; - - out_no_rtc: - clk_unprepare(rtap->clk); - return ret; -} - -#ifdef CONFIG_PM_SLEEP -static int coh901331_suspend(struct device *dev) -{ - struct coh901331_port *rtap = dev_get_drvdata(dev); - - /* - * If this RTC alarm will be used for waking the system up, - * don't disable it of course. Else we just disable the alarm - * and await suspension. - */ - if (device_may_wakeup(dev)) { - enable_irq_wake(rtap->irq); - } else { - clk_enable(rtap->clk); - rtap->irqmaskstore = readl(rtap->virtbase + COH901331_IRQ_MASK); - writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - } - clk_unprepare(rtap->clk); - return 0; -} - -static int coh901331_resume(struct device *dev) -{ - int ret; - struct coh901331_port *rtap = dev_get_drvdata(dev); - - ret = clk_prepare(rtap->clk); - if (ret) - return ret; - - if (device_may_wakeup(dev)) { - disable_irq_wake(rtap->irq); - } else { - clk_enable(rtap->clk); - writel(rtap->irqmaskstore, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - } - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(coh901331_pm_ops, coh901331_suspend, coh901331_resume); - -static void coh901331_shutdown(struct platform_device *pdev) -{ - struct coh901331_port *rtap = platform_get_drvdata(pdev); - - clk_enable(rtap->clk); - writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable_unprepare(rtap->clk); -} - -static const struct of_device_id coh901331_dt_match[] = { - { .compatible = "stericsson,coh901331" }, - {}, -}; -MODULE_DEVICE_TABLE(of, coh901331_dt_match); - -static struct platform_driver coh901331_driver = { - .driver = { - .name = "rtc-coh901331", - .pm = &coh901331_pm_ops, - .of_match_table = coh901331_dt_match, - }, - .remove = __exit_p(coh901331_remove), - .shutdown = coh901331_shutdown, -}; - -module_platform_driver_probe(coh901331_driver, coh901331_probe); - -MODULE_AUTHOR("Linus Walleij <[email protected]>"); -MODULE_DESCRIPTION("ST-Ericsson AB COH 901 331 RTC Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-cpcap.c b/drivers/rtc/rtc-cpcap.c index 800667d73a6f..afc8fcba8f88 100644 --- a/drivers/rtc/rtc-cpcap.c +++ b/drivers/rtc/rtc-cpcap.c @@ -269,7 +269,8 @@ static int cpcap_rtc_probe(struct platform_device *pdev) rtc->alarm_irq = platform_get_irq(pdev, 0); err = devm_request_threaded_irq(dev, rtc->alarm_irq, NULL, - cpcap_rtc_alarm_irq, IRQF_TRIGGER_NONE, + cpcap_rtc_alarm_irq, + IRQF_TRIGGER_NONE | IRQF_ONESHOT, "rtc_alarm", rtc); if (err) { dev_err(dev, "Could not request alarm irq: %d\n", err); @@ -285,7 +286,8 @@ static int cpcap_rtc_probe(struct platform_device *pdev) */ rtc->update_irq = platform_get_irq(pdev, 1); err = devm_request_threaded_irq(dev, rtc->update_irq, NULL, - cpcap_rtc_update_irq, IRQF_TRIGGER_NONE, + cpcap_rtc_update_irq, + IRQF_TRIGGER_NONE | IRQF_ONESHOT, "rtc_1hz", rtc); if (err) { dev_err(dev, "Could not request update irq: %d\n", err); @@ -299,7 +301,7 @@ static int cpcap_rtc_probe(struct platform_device *pdev) /* ignore error and continue without wakeup support */ } - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } static const struct of_device_id cpcap_rtc_of_match[] = { diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c index f7343c289cab..70626793ca69 100644 --- a/drivers/rtc/rtc-cros-ec.c +++ b/drivers/rtc/rtc-cros-ec.c @@ -350,7 +350,7 @@ static int cros_ec_rtc_probe(struct platform_device *pdev) cros_ec_rtc->rtc->ops = &cros_ec_rtc_ops; cros_ec_rtc->rtc->range_max = U32_MAX; - ret = rtc_register_device(cros_ec_rtc->rtc); + ret = devm_rtc_register_device(cros_ec_rtc->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c index 58de10da37b1..9ca99bd35702 100644 --- a/drivers/rtc/rtc-da9052.c +++ b/drivers/rtc/rtc-da9052.c @@ -304,7 +304,7 @@ static int da9052_rtc_probe(struct platform_device *pdev) rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; rtc->rtc->range_max = RTC_TIMESTAMP_END_2063; - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c index 046b1d4c3dae..d4b72a9fa2ba 100644 --- a/drivers/rtc/rtc-da9063.c +++ b/drivers/rtc/rtc-da9063.c @@ -243,7 +243,7 @@ static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm) al_secs = rtc_tm_to_time64(&rtc->alarm_time); /* handle the rtc synchronisation delay */ - if (rtc->rtc_sync == true && al_secs - tm_secs == 1) + if (rtc->rtc_sync && al_secs - tm_secs == 1) memcpy(tm, &rtc->alarm_time, sizeof(struct rtc_time)); else rtc->rtc_sync = false; @@ -494,7 +494,7 @@ static int da9063_rtc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n", irq_alarm, ret); - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } static struct platform_driver da9063_rtc_driver = { diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c index 73f87a17cdf3..6bef0f2353da 100644 --- a/drivers/rtc/rtc-davinci.c +++ b/drivers/rtc/rtc-davinci.c @@ -484,7 +484,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); - return rtc_register_device(davinci_rtc->rtc); + return devm_rtc_register_device(davinci_rtc->rtc); } static int __exit davinci_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c index 200d85b01e8b..218a6de19247 100644 --- a/drivers/rtc/rtc-digicolor.c +++ b/drivers/rtc/rtc-digicolor.c @@ -202,10 +202,10 @@ static int __init dc_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->ops = &dc_rtc_ops; rtc->rtc_dev->range_max = U32_MAX; - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } -static const struct of_device_id dc_dt_ids[] = { +static const __maybe_unused struct of_device_id dc_dt_ids[] = { { .compatible = "cnxt,cx92755-rtc" }, { /* sentinel */ } }; diff --git a/drivers/rtc/rtc-dm355evm.c b/drivers/rtc/rtc-dm355evm.c index cd947a20843b..94fb16ac3e0f 100644 --- a/drivers/rtc/rtc-dm355evm.c +++ b/drivers/rtc/rtc-dm355evm.c @@ -132,7 +132,7 @@ static int dm355evm_rtc_probe(struct platform_device *pdev) rtc->ops = &dm355evm_rtc_ops; rtc->range_max = U32_MAX; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } /* diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c index a3d790889eea..9ef107b99b65 100644 --- a/drivers/rtc/rtc-ds1305.c +++ b/drivers/rtc/rtc-ds1305.c @@ -435,13 +435,12 @@ static const struct rtc_class_ops ds1305_ops = { static void ds1305_work(struct work_struct *work) { struct ds1305 *ds1305 = container_of(work, struct ds1305, work); - struct mutex *lock = &ds1305->rtc->ops_lock; struct spi_device *spi = ds1305->spi; u8 buf[3]; int status; /* lock to protect ds1305->ctrl */ - mutex_lock(lock); + rtc_lock(ds1305->rtc); /* Disable the IRQ, and clear its status ... for now, we "know" * that if more than one alarm is active, they're in sync. @@ -459,7 +458,7 @@ static void ds1305_work(struct work_struct *work) if (status < 0) dev_dbg(&spi->dev, "clear irq --> %d\n", status); - mutex_unlock(lock); + rtc_unlock(ds1305->rtc); if (!test_bit(FLAG_EXITING, &ds1305->flags)) enable_irq(spi->irq); @@ -694,12 +693,11 @@ static int ds1305_probe(struct spi_device *spi) ds1305->rtc->range_max = RTC_TIMESTAMP_END_2099; ds1305_nvmem_cfg.priv = ds1305; - ds1305->rtc->nvram_old_abi = true; - status = rtc_register_device(ds1305->rtc); + status = devm_rtc_register_device(ds1305->rtc); if (status) return status; - rtc_nvmem_register(ds1305->rtc, &ds1305_nvmem_cfg); + devm_rtc_nvmem_register(ds1305->rtc, &ds1305_nvmem_cfg); /* Maybe set up alarm IRQ; be ready to handle it triggering right * away. NOTE that we don't share this. The signal is active low, diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 54c85cdd019d..cd8e438bc9c4 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -8,12 +8,12 @@ * Copyright (C) 2012 Bertrand Achard (nvram access fixes) */ -#include <linux/acpi.h> #include <linux/bcd.h> #include <linux/i2c.h> #include <linux/init.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/property.h> #include <linux/rtc/ds1307.h> #include <linux/rtc.h> #include <linux/slab.h> @@ -31,6 +31,7 @@ * That's a natural job for a factory or repair bench. */ enum ds_type { + unknown_ds_type, /* always first and 0 */ ds_1307, ds_1308, ds_1337, @@ -122,6 +123,9 @@ enum ds_type { #define RX8130_REG_FLAG_AF BIT(3) #define RX8130_REG_CONTROL0 0x1e #define RX8130_REG_CONTROL0_AIE BIT(3) +#define RX8130_REG_CONTROL1 0x1f +#define RX8130_REG_CONTROL1_INIEN BIT(4) +#define RX8130_REG_CONTROL1_CHGEN BIT(5) #define MCP794XX_REG_CONTROL 0x07 # define MCP794XX_BIT_ALM0_EN 0x10 @@ -153,6 +157,7 @@ enum ds_type { #define DS1388_REG_CONTROL 0x0c # define DS1388_BIT_RST BIT(0) # define DS1388_BIT_WDE BIT(1) +# define DS1388_BIT_nEOSC BIT(7) /* negative offset step is -2.034ppm */ #define M41TXX_NEG_OFFSET_STEP_PPB 2034 @@ -190,6 +195,15 @@ struct chip_desc { u16 trickle_charger_reg; u8 (*do_trickle_setup)(struct ds1307 *, u32, bool); + /* Does the RTC require trickle-resistor-ohms to select the value of + * the resistor between Vcc and Vbackup? + */ + bool requires_trickle_resistor; + /* Some RTC's batteries and supercaps were charged by default, others + * allow charging but were not configured previously to do so. + * Remember this behavior to stay backwards compatible. + */ + bool charge_default; }; static const struct chip_desc chips[last_ds_type]; @@ -352,6 +366,10 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t) regmap_update_bits(ds1307->regmap, DS1340_REG_FLAG, DS1340_BIT_OSF, 0); break; + case ds_1388: + regmap_update_bits(ds1307->regmap, DS1388_REG_FLAG, + DS1388_BIT_OSF, 0); + break; case mcp794xx: /* * these bits were cleared when preparing the date/time @@ -507,6 +525,8 @@ static u8 do_trickle_setup_ds1339(struct ds1307 *ds1307, u32 ohms, bool diode) u8 setup = (diode) ? DS1307_TRICKLE_CHARGER_DIODE : DS1307_TRICKLE_CHARGER_NO_DIODE; + setup |= DS13XX_TRICKLE_CHARGER_MAGIC; + switch (ohms) { case 250: setup |= DS1307_TRICKLE_CHARGER_250_OHM; @@ -525,14 +545,23 @@ static u8 do_trickle_setup_ds1339(struct ds1307 *ds1307, u32 ohms, bool diode) return setup; } +static u8 do_trickle_setup_rx8130(struct ds1307 *ds1307, u32 ohms, bool diode) +{ + /* make sure that the backup battery is enabled */ + u8 setup = RX8130_REG_CONTROL1_INIEN; + if (diode) + setup |= RX8130_REG_CONTROL1_CHGEN; + + return setup; +} + static irqreturn_t rx8130_irq(int irq, void *dev_id) { struct ds1307 *ds1307 = dev_id; - struct mutex *lock = &ds1307->rtc->ops_lock; u8 ctl[3]; int ret; - mutex_lock(lock); + rtc_lock(ds1307->rtc); /* Read control registers. */ ret = regmap_bulk_read(ds1307->regmap, RX8130_REG_EXTENSION, ctl, @@ -552,7 +581,7 @@ static irqreturn_t rx8130_irq(int irq, void *dev_id) rtc_update_irq(ds1307->rtc, 1, RTC_AF | RTC_IRQF); out: - mutex_unlock(lock); + rtc_unlock(ds1307->rtc); return IRQ_HANDLED; } @@ -979,6 +1008,8 @@ static const struct chip_desc chips[last_ds_type] = { .bbsqi_bit = DS1339_BIT_BBSQI, .trickle_charger_reg = 0x10, .do_trickle_setup = &do_trickle_setup_ds1339, + .requires_trickle_resistor = true, + .charge_default = true, }, [ds_1340] = { .century_reg = DS1307_REG_HOUR, @@ -986,6 +1017,8 @@ static const struct chip_desc chips[last_ds_type] = { .century_bit = DS1340_BIT_CENTURY, .do_trickle_setup = &do_trickle_setup_ds1339, .trickle_charger_reg = 0x08, + .requires_trickle_resistor = true, + .charge_default = true, }, [ds_1341] = { .century_reg = DS1307_REG_MONTH, @@ -1009,6 +1042,8 @@ static const struct chip_desc chips[last_ds_type] = { .offset = 0x10, .irq_handler = rx8130_irq, .rtc_ops = &rx8130_rtc_ops, + .trickle_charger_reg = RX8130_REG_CONTROL1, + .do_trickle_setup = &do_trickle_setup_rx8130, }, [m41t0] = { .rtc_ops = &m41txx_rtc_ops, @@ -1055,7 +1090,6 @@ static const struct i2c_device_id ds1307_id[] = { }; MODULE_DEVICE_TABLE(i2c, ds1307_id); -#ifdef CONFIG_OF static const struct of_device_id ds1307_of_match[] = { { .compatible = "dallas,ds1307", @@ -1132,32 +1166,6 @@ static const struct of_device_id ds1307_of_match[] = { { } }; MODULE_DEVICE_TABLE(of, ds1307_of_match); -#endif - -#ifdef CONFIG_ACPI -static const struct acpi_device_id ds1307_acpi_ids[] = { - { .id = "DS1307", .driver_data = ds_1307 }, - { .id = "DS1308", .driver_data = ds_1308 }, - { .id = "DS1337", .driver_data = ds_1337 }, - { .id = "DS1338", .driver_data = ds_1338 }, - { .id = "DS1339", .driver_data = ds_1339 }, - { .id = "DS1388", .driver_data = ds_1388 }, - { .id = "DS1340", .driver_data = ds_1340 }, - { .id = "DS1341", .driver_data = ds_1341 }, - { .id = "DS3231", .driver_data = ds_3231 }, - { .id = "M41T0", .driver_data = m41t0 }, - { .id = "M41T00", .driver_data = m41t00 }, - { .id = "M41T11", .driver_data = m41t11 }, - { .id = "MCP7940X", .driver_data = mcp794xx }, - { .id = "MCP7941X", .driver_data = mcp794xx }, - { .id = "PT7C4338", .driver_data = ds_1307 }, - { .id = "RX8025", .driver_data = rx_8025 }, - { .id = "ISL12057", .driver_data = ds_1337 }, - { .id = "RX8130", .driver_data = rx_8130 }, - { } -}; -MODULE_DEVICE_TABLE(acpi, ds1307_acpi_ids); -#endif /* * The ds1337 and ds1339 both have two alarms, but we only use the first @@ -1293,18 +1301,37 @@ static int ds1307_nvram_write(void *priv, unsigned int offset, void *val, static u8 ds1307_trickle_init(struct ds1307 *ds1307, const struct chip_desc *chip) { - u32 ohms; - bool diode = true; + u32 ohms, chargeable; + bool diode = chip->charge_default; if (!chip->do_trickle_setup) return 0; if (device_property_read_u32(ds1307->dev, "trickle-resistor-ohms", - &ohms)) + &ohms) && chip->requires_trickle_resistor) return 0; - if (device_property_read_bool(ds1307->dev, "trickle-diode-disable")) + /* aux-voltage-chargeable takes precedence over the deprecated + * trickle-diode-disable + */ + if (!device_property_read_u32(ds1307->dev, "aux-voltage-chargeable", + &chargeable)) { + switch (chargeable) { + case 0: + diode = false; + break; + case 1: + diode = true; + break; + default: + dev_warn(ds1307->dev, + "unsupported aux-voltage-chargeable value\n"); + break; + } + } else if (device_property_read_bool(ds1307->dev, + "trickle-diode-disable")) { diode = false; + } return chip->do_trickle_setup(ds1307, ohms, diode); } @@ -1572,13 +1599,16 @@ static const struct clk_ops ds3231_clk_32khz_ops = { .recalc_rate = ds3231_clk_32khz_recalc_rate, }; +static const char *ds3231_clks_names[] = { + [DS3231_CLK_SQW] = "ds3231_clk_sqw", + [DS3231_CLK_32KHZ] = "ds3231_clk_32khz", +}; + static struct clk_init_data ds3231_clks_init[] = { [DS3231_CLK_SQW] = { - .name = "ds3231_clk_sqw", .ops = &ds3231_clk_sqw_ops, }, [DS3231_CLK_32KHZ] = { - .name = "ds3231_clk_32khz", .ops = &ds3231_clk_32khz_ops, }, }; @@ -1599,6 +1629,11 @@ static int ds3231_clks_register(struct ds1307 *ds1307) if (!onecell->clks) return -ENOMEM; + /* optional override of the clockname */ + device_property_read_string_array(ds1307->dev, "clock-output-names", + ds3231_clks_names, + ARRAY_SIZE(ds3231_clks_names)); + for (i = 0; i < ARRAY_SIZE(ds3231_clks_init); i++) { struct clk_init_data init = ds3231_clks_init[i]; @@ -1609,9 +1644,7 @@ static int ds3231_clks_register(struct ds1307 *ds1307) if (i == DS3231_CLK_SQW && test_bit(HAS_ALARM, &ds1307->flags)) continue; - /* optional override of the clockname */ - of_property_read_string_index(node, "clock-output-names", i, - &init.name); + init.name = ds3231_clks_names[i]; ds1307->clks[i].init = &init; onecell->clks[i] = devm_clk_register(ds1307->dev, @@ -1620,10 +1653,8 @@ static int ds3231_clks_register(struct ds1307 *ds1307) return PTR_ERR(onecell->clks[i]); } - if (!node) - return 0; - - of_clk_add_provider(node, of_clk_src_onecell_get, onecell); + if (node) + of_clk_add_provider(node, of_clk_src_onecell_get, onecell); return 0; } @@ -1707,6 +1738,7 @@ static int ds1307_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct ds1307 *ds1307; + const void *match; int err = -ENODEV; int tmp; const struct chip_desc *chip; @@ -1732,22 +1764,15 @@ static int ds1307_probe(struct i2c_client *client, i2c_set_clientdata(client, ds1307); - if (client->dev.of_node) { - ds1307->type = (enum ds_type) - of_device_get_match_data(&client->dev); + match = device_get_match_data(&client->dev); + if (match) { + ds1307->type = (enum ds_type)match; chip = &chips[ds1307->type]; } else if (id) { chip = &chips[id->driver_data]; ds1307->type = id->driver_data; } else { - const struct acpi_device_id *acpi_id; - - acpi_id = acpi_match_device(ACPI_PTR(ds1307_acpi_ids), - ds1307->dev); - if (!acpi_id) - return -ENODEV; - chip = &chips[acpi_id->driver_data]; - ds1307->type = acpi_id->driver_data; + return -ENODEV; } want_irq = client->irq > 0 && chip->alarm; @@ -1758,7 +1783,6 @@ static int ds1307_probe(struct i2c_client *client, trickle_charger_setup = pdata->trickle_charger_setup; if (trickle_charger_setup && chip->trickle_charger_reg) { - trickle_charger_setup |= DS13XX_TRICKLE_CHARGER_MAGIC; dev_dbg(ds1307->dev, "writing trickle charger info 0x%x to 0x%x\n", trickle_charger_setup, chip->trickle_charger_reg); @@ -1766,7 +1790,6 @@ static int ds1307_probe(struct i2c_client *client, trickle_charger_setup); } -#ifdef CONFIG_OF /* * For devices with no IRQ directly connected to the SoC, the RTC chip * can be forced as a wakeup source by stating that explicitly in @@ -1775,10 +1798,8 @@ static int ds1307_probe(struct i2c_client *client, * This will guarantee the 'wakealarm' sysfs entry is available on the device, * if supported by the RTC. */ - if (chip->alarm && of_property_read_bool(client->dev.of_node, - "wakeup-source")) + if (chip->alarm && device_property_read_bool(&client->dev, "wakeup-source")) ds1307_can_wakeup_device = true; -#endif switch (ds1307->type) { case ds_1337: @@ -1881,6 +1902,19 @@ static int ds1307_probe(struct i2c_client *client, DS1307_REG_HOUR << 4 | 0x08, hour); } break; + case ds_1388: + err = regmap_read(ds1307->regmap, DS1388_REG_CONTROL, &tmp); + if (err) { + dev_dbg(ds1307->dev, "read error %d\n", err); + goto exit; + } + + /* oscillator off? turn it on, so clock can tick. */ + if (tmp & DS1388_BIT_nEOSC) { + tmp &= ~DS1388_BIT_nEOSC; + regmap_write(ds1307->regmap, DS1388_REG_CONTROL, tmp); + } + break; default: break; } @@ -1966,7 +2000,7 @@ static int ds1307_probe(struct i2c_client *client, if (err) return err; - err = rtc_register_device(ds1307->rtc); + err = devm_rtc_register_device(ds1307->rtc); if (err) return err; @@ -1981,8 +2015,7 @@ static int ds1307_probe(struct i2c_client *client, .priv = ds1307, }; - ds1307->rtc->nvram_old_abi = true; - rtc_nvmem_register(ds1307->rtc, &nvmem_cfg); + devm_rtc_nvmem_register(ds1307->rtc, &nvmem_cfg); } ds1307_hwmon_register(ds1307); @@ -1998,8 +2031,7 @@ exit: static struct i2c_driver ds1307_driver = { .driver = { .name = "rtc-ds1307", - .of_match_table = of_match_ptr(ds1307_of_match), - .acpi_match_table = ACPI_PTR(ds1307_acpi_ids), + .of_match_table = ds1307_of_match, }, .probe = ds1307_probe, .id_table = ds1307_id, diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index ba143423875b..f14ed6c96437 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -399,7 +399,6 @@ static int ds1343_probe(struct spi_device *spi) if (IS_ERR(priv->rtc)) return PTR_ERR(priv->rtc); - priv->rtc->nvram_old_abi = true; priv->rtc->ops = &ds1343_rtc_ops; priv->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; priv->rtc->range_max = RTC_TIMESTAMP_END_2099; @@ -409,12 +408,12 @@ static int ds1343_probe(struct spi_device *spi) dev_err(&spi->dev, "unable to create sysfs entries for rtc ds1343\n"); - res = rtc_register_device(priv->rtc); + res = devm_rtc_register_device(priv->rtc); if (res) return res; nvmem_cfg.priv = priv; - rtc_nvmem_register(priv->rtc, &nvmem_cfg); + devm_rtc_nvmem_register(priv->rtc, &nvmem_cfg); priv->irq = spi->irq; diff --git a/drivers/rtc/rtc-ds1347.c b/drivers/rtc/rtc-ds1347.c index 7025cf3fb9f8..157bf5209ac4 100644 --- a/drivers/rtc/rtc-ds1347.c +++ b/drivers/rtc/rtc-ds1347.c @@ -166,7 +166,7 @@ static int ds1347_probe(struct spi_device *spi) rtc->range_min = RTC_TIMESTAMP_BEGIN_0000; rtc->range_max = RTC_TIMESTAMP_END_9999; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct spi_driver ds1347_driver = { diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c index 177d870bda0d..fab79921a712 100644 --- a/drivers/rtc/rtc-ds1374.c +++ b/drivers/rtc/rtc-ds1374.c @@ -508,7 +508,7 @@ static int ds1374_probe(struct i2c_client *client, ds1374->rtc->ops = &ds1374_rtc_ops; ds1374->rtc->range_max = U32_MAX; - ret = rtc_register_device(ds1374->rtc); + ret = devm_rtc_register_device(ds1374->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c index a63872c4c76d..bda884333082 100644 --- a/drivers/rtc/rtc-ds1511.c +++ b/drivers/rtc/rtc-ds1511.c @@ -466,13 +466,11 @@ static int ds1511_rtc_probe(struct platform_device *pdev) pdata->rtc->ops = &ds1511_rtc_ops; - pdata->rtc->nvram_old_abi = true; - - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (ret) return ret; - rtc_nvmem_register(pdata->rtc, &ds1511_nvmem_cfg); + devm_rtc_nvmem_register(pdata->rtc, &ds1511_nvmem_cfg); /* * if the platform has an interrupt in mind for this device, diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c index cdf5e05b9489..dbff5b621ef5 100644 --- a/drivers/rtc/rtc-ds1553.c +++ b/drivers/rtc/rtc-ds1553.c @@ -294,9 +294,8 @@ static int ds1553_rtc_probe(struct platform_device *pdev) return PTR_ERR(pdata->rtc); pdata->rtc->ops = &ds1553_rtc_ops; - pdata->rtc->nvram_old_abi = true; - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (ret) return ret; @@ -310,8 +309,7 @@ static int ds1553_rtc_probe(struct platform_device *pdev) } } - if (rtc_nvmem_register(pdata->rtc, &nvmem_cfg)) - dev_err(&pdev->dev, "unable to register nvmem\n"); + devm_rtc_nvmem_register(pdata->rtc, &nvmem_cfg); return 0; } diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c index 9da84df9f152..4cd8efbef6cf 100644 --- a/drivers/rtc/rtc-ds1672.c +++ b/drivers/rtc/rtc-ds1672.c @@ -124,7 +124,7 @@ static int ds1672_probe(struct i2c_client *client, rtc->ops = &ds1672_rtc_ops; rtc->range_max = U32_MAX; - err = rtc_register_device(rtc); + err = devm_rtc_register_device(rtc); if (err) return err; @@ -139,7 +139,7 @@ static const struct i2c_device_id ds1672_id[] = { }; MODULE_DEVICE_TABLE(i2c, ds1672_id); -static const struct of_device_id ds1672_of_match[] = { +static const __maybe_unused struct of_device_id ds1672_of_match[] = { { .compatible = "dallas,ds1672" }, { } }; diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index 56c670af2e50..75db7ab654a5 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -193,12 +193,12 @@ ds1685_rtc_begin_data_access(struct ds1685_priv *rtc) rtc->write(rtc, RTC_CTRL_B, (rtc->read(rtc, RTC_CTRL_B) | RTC_CTRL_B_SET)); + /* Switch to Bank 1 */ + ds1685_rtc_switch_to_bank1(rtc); + /* Read Ext Ctrl 4A and check the INCR bit to avoid a lockout. */ while (rtc->read(rtc, RTC_EXT_CTRL_4A) & RTC_CTRL_4A_INCR) cpu_relax(); - - /* Switch to Bank 1 */ - ds1685_rtc_switch_to_bank1(rtc); } /** @@ -213,7 +213,7 @@ static inline void ds1685_rtc_end_data_access(struct ds1685_priv *rtc) { /* Switch back to Bank 0 */ - ds1685_rtc_switch_to_bank1(rtc); + ds1685_rtc_switch_to_bank0(rtc); /* Clear the SET bit in Ctrl B */ rtc->write(rtc, RTC_CTRL_B, @@ -658,7 +658,6 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) { struct platform_device *pdev = dev_id; struct ds1685_priv *rtc = platform_get_drvdata(pdev); - struct mutex *rtc_mutex; u8 ctrlb, ctrlc; unsigned long events = 0; u8 num_irqs = 0; @@ -667,8 +666,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) if (unlikely(!rtc)) return IRQ_HANDLED; - rtc_mutex = &rtc->dev->ops_lock; - mutex_lock(rtc_mutex); + rtc_lock(rtc->dev); /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */ ctrlb = rtc->read(rtc, RTC_CTRL_B); @@ -713,7 +711,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) } } rtc_update_irq(rtc->dev, num_irqs, events); - mutex_unlock(rtc_mutex); + rtc_unlock(rtc->dev); return events ? IRQ_HANDLED : IRQ_NONE; } @@ -1316,13 +1314,12 @@ ds1685_rtc_probe(struct platform_device *pdev) if (ret) return ret; - rtc_dev->nvram_old_abi = true; nvmem_cfg.priv = rtc; - ret = rtc_nvmem_register(rtc_dev, &nvmem_cfg); + ret = devm_rtc_nvmem_register(rtc_dev, &nvmem_cfg); if (ret) return ret; - return rtc_register_device(rtc_dev); + return devm_rtc_register_device(rtc_dev); } /** diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c index 2b949f0dbaa9..13d45c697da6 100644 --- a/drivers/rtc/rtc-ds1742.c +++ b/drivers/rtc/rtc-ds1742.c @@ -190,14 +190,12 @@ static int ds1742_rtc_probe(struct platform_device *pdev) return PTR_ERR(rtc); rtc->ops = &ds1742_rtc_ops; - rtc->nvram_old_abi = true; - ret = rtc_register_device(rtc); + ret = devm_rtc_register_device(rtc); if (ret) return ret; - if (rtc_nvmem_register(rtc, &nvmem_cfg)) - dev_err(&pdev->dev, "Unable to register nvmem\n"); + devm_rtc_nvmem_register(rtc, &nvmem_cfg); return 0; } diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c index 9df0c44512b8..0480f592307e 100644 --- a/drivers/rtc/rtc-ds2404.c +++ b/drivers/rtc/rtc-ds2404.c @@ -234,7 +234,7 @@ static int rtc_probe(struct platform_device *pdev) chip->rtc->ops = &ds2404_rtc_ops; chip->rtc->range_max = U32_MAX; - retval = rtc_register_device(chip->rtc); + retval = devm_rtc_register_device(chip->rtc); if (retval) return retval; diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index 69c37ab64352..168bc27f1f5a 100644 --- a/drivers/rtc/rtc-ds3232.c +++ b/drivers/rtc/rtc-ds3232.c @@ -406,11 +406,10 @@ static irqreturn_t ds3232_irq(int irq, void *dev_id) { struct device *dev = dev_id; struct ds3232 *ds3232 = dev_get_drvdata(dev); - struct mutex *lock = &ds3232->rtc->ops_lock; int ret; int stat, control; - mutex_lock(lock); + rtc_lock(ds3232->rtc); ret = regmap_read(ds3232->regmap, DS3232_REG_SR, &stat); if (ret) @@ -448,7 +447,7 @@ static irqreturn_t ds3232_irq(int irq, void *dev_id) } unlock: - mutex_unlock(lock); + rtc_unlock(ds3232->rtc); return IRQ_HANDLED; } @@ -518,7 +517,7 @@ static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq, if (IS_ERR(ds3232->rtc)) return PTR_ERR(ds3232->rtc); - ret = rtc_nvmem_register(ds3232->rtc, &nvmem_cfg); + ret = devm_rtc_nvmem_register(ds3232->rtc, &nvmem_cfg); if(ret) return ret; @@ -593,7 +592,7 @@ static const struct i2c_device_id ds3232_id[] = { }; MODULE_DEVICE_TABLE(i2c, ds3232_id); -static const struct of_device_id ds3232_of_match[] = { +static const __maybe_unused struct of_device_id ds3232_of_match[] = { { .compatible = "dallas,ds3232" }, { } }; diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c index 8ec9ea1ca72e..acae7f16808f 100644 --- a/drivers/rtc/rtc-ep93xx.c +++ b/drivers/rtc/rtc-ep93xx.c @@ -33,7 +33,7 @@ struct ep93xx_rtc { static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload, unsigned short *delete) { - struct ep93xx_rtc *ep93xx_rtc = dev_get_platdata(dev); + struct ep93xx_rtc *ep93xx_rtc = dev_get_drvdata(dev); unsigned long comp; comp = readl(ep93xx_rtc->mmio_base + EP93XX_RTC_SWCOMP); @@ -51,7 +51,7 @@ static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload, static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) { - struct ep93xx_rtc *ep93xx_rtc = dev_get_platdata(dev); + struct ep93xx_rtc *ep93xx_rtc = dev_get_drvdata(dev); unsigned long time; time = readl(ep93xx_rtc->mmio_base + EP93XX_RTC_DATA); @@ -62,7 +62,7 @@ static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) static int ep93xx_rtc_set_time(struct device *dev, struct rtc_time *tm) { - struct ep93xx_rtc *ep93xx_rtc = dev_get_platdata(dev); + struct ep93xx_rtc *ep93xx_rtc = dev_get_drvdata(dev); unsigned long secs = rtc_tm_to_time64(tm); writel(secs + 1, ep93xx_rtc->mmio_base + EP93XX_RTC_LOAD); @@ -145,7 +145,7 @@ static int ep93xx_rtc_probe(struct platform_device *pdev) if (err) return err; - return rtc_register_device(ep93xx_rtc->rtc); + return devm_rtc_register_device(ep93xx_rtc->rtc); } static struct platform_driver ep93xx_rtc_driver = { diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c index 68f0a1801a2e..57cc09d0a806 100644 --- a/drivers/rtc/rtc-fsl-ftm-alarm.c +++ b/drivers/rtc/rtc-fsl-ftm-alarm.c @@ -3,7 +3,7 @@ * Freescale FlexTimer Module (FTM) alarm device driver. * * Copyright 2014 Freescale Semiconductor, Inc. - * Copyright 2019 NXP + * Copyright 2019-2020 NXP * */ @@ -290,7 +290,7 @@ static int ftm_rtc_probe(struct platform_device *pdev) if (ret) dev_err(&pdev->dev, "failed to enable irq wake\n"); - ret = rtc_register_device(rtc->rtc_dev); + ret = devm_rtc_register_device(rtc->rtc_dev); if (ret) { dev_err(&pdev->dev, "can't register rtc device\n"); return ret; @@ -312,7 +312,7 @@ static const struct of_device_id ftm_rtc_match[] = { }; static const struct acpi_device_id ftm_imx_acpi_ids[] = { - {"NXP0011",}, + {"NXP0014",}, { } }; MODULE_DEVICE_TABLE(acpi, ftm_imx_acpi_ids); diff --git a/drivers/rtc/rtc-ftrtc010.c b/drivers/rtc/rtc-ftrtc010.c index 0919f7dc94a3..ad3add5db4c8 100644 --- a/drivers/rtc/rtc-ftrtc010.c +++ b/drivers/rtc/rtc-ftrtc010.c @@ -176,7 +176,7 @@ static int ftrtc010_rtc_probe(struct platform_device *pdev) if (unlikely(ret)) return ret; - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } static int ftrtc010_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-goldfish.c b/drivers/rtc/rtc-goldfish.c index 6349d2cd3680..7ab95d052644 100644 --- a/drivers/rtc/rtc-goldfish.c +++ b/drivers/rtc/rtc-goldfish.c @@ -194,7 +194,7 @@ static int goldfish_rtc_probe(struct platform_device *pdev) if (err) return err; - return rtc_register_device(rtcdrv->rtc); + return devm_rtc_register_device(rtcdrv->rtc); } static const struct of_device_id goldfish_rtc_of_match[] = { diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c index 0fb79c4afb46..0751cae27285 100644 --- a/drivers/rtc/rtc-hym8563.c +++ b/drivers/rtc/rtc-hym8563.c @@ -428,10 +428,9 @@ static irqreturn_t hym8563_irq(int irq, void *dev_id) { struct hym8563 *hym8563 = (struct hym8563 *)dev_id; struct i2c_client *client = hym8563->client; - struct mutex *lock = &hym8563->rtc->ops_lock; int data, ret; - mutex_lock(lock); + rtc_lock(hym8563->rtc); /* Clear the alarm flag */ @@ -451,7 +450,7 @@ static irqreturn_t hym8563_irq(int irq, void *dev_id) } out: - mutex_unlock(lock); + rtc_unlock(hym8563->rtc); return IRQ_HANDLED; } @@ -527,8 +526,6 @@ static int hym8563_probe(struct i2c_client *client, hym8563->client = client; i2c_set_clientdata(client, hym8563); - device_set_wakeup_capable(&client->dev, true); - ret = hym8563_init_device(client); if (ret) { dev_err(&client->dev, "could not init device, %d\n", ret); @@ -547,6 +544,11 @@ static int hym8563_probe(struct i2c_client *client, } } + if (client->irq > 0 || + device_property_read_bool(&client->dev, "wakeup-source")) { + device_init_wakeup(&client->dev, true); + } + /* check state of calendar information */ ret = i2c_smbus_read_byte_data(client, HYM8563_SEC); if (ret < 0) diff --git a/drivers/rtc/rtc-imx-sc.c b/drivers/rtc/rtc-imx-sc.c index a5f59e6f862e..cc9fbab49999 100644 --- a/drivers/rtc/rtc-imx-sc.c +++ b/drivers/rtc/rtc-imx-sc.c @@ -166,7 +166,7 @@ static int imx_sc_rtc_probe(struct platform_device *pdev) imx_sc_rtc->range_min = 0; imx_sc_rtc->range_max = U32_MAX; - ret = rtc_register_device(imx_sc_rtc); + ret = devm_rtc_register_device(imx_sc_rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c index 8d141d8a5490..c2692da74e09 100644 --- a/drivers/rtc/rtc-imxdi.c +++ b/drivers/rtc/rtc-imxdi.c @@ -814,7 +814,7 @@ static int __init dryice_rtc_probe(struct platform_device *pdev) imxdi->rtc->ops = &dryice_rtc_ops; imxdi->rtc->range_max = U32_MAX; - rc = rtc_register_device(imxdi->rtc); + rc = devm_rtc_register_device(imxdi->rtc); if (rc) goto err; diff --git a/drivers/rtc/rtc-isl12026.c b/drivers/rtc/rtc-isl12026.c index 5b6b17fb6d62..1fc6627d854d 100644 --- a/drivers/rtc/rtc-isl12026.c +++ b/drivers/rtc/rtc-isl12026.c @@ -465,11 +465,11 @@ static int isl12026_probe_new(struct i2c_client *client) priv->rtc->ops = &isl12026_rtc_ops; nvm_cfg.priv = priv; - ret = rtc_nvmem_register(priv->rtc, &nvm_cfg); + ret = devm_rtc_nvmem_register(priv->rtc, &nvm_cfg); if (ret) return ret; - return rtc_register_device(priv->rtc); + return devm_rtc_register_device(priv->rtc); } static int isl12026_remove(struct i2c_client *client) diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c index ebb691fa48a6..182dfa605515 100644 --- a/drivers/rtc/rtc-isl1208.c +++ b/drivers/rtc/rtc-isl1208.c @@ -99,7 +99,7 @@ static const struct i2c_device_id isl1208_id[] = { }; MODULE_DEVICE_TABLE(i2c, isl1208_id); -static const struct of_device_id isl1208_of_match[] = { +static const __maybe_unused struct of_device_id isl1208_of_match[] = { { .compatible = "isil,isl1208", .data = &isl1208_configs[TYPE_ISL1208] }, { .compatible = "isil,isl1209", .data = &isl1208_configs[TYPE_ISL1209] }, { .compatible = "isil,isl1218", .data = &isl1208_configs[TYPE_ISL1218] }, @@ -890,11 +890,11 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id) if (rc) return rc; - rc = rtc_nvmem_register(isl1208->rtc, &isl1208->nvmem_config); + rc = devm_rtc_nvmem_register(isl1208->rtc, &isl1208->nvmem_config); if (rc) return rc; - return rtc_register_device(isl1208->rtc); + return devm_rtc_register_device(isl1208->rtc); } static struct i2c_driver isl1208_driver = { diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 9607e6b6e0b3..6e51df72fd65 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -375,7 +375,7 @@ static int jz4740_rtc_probe(struct platform_device *pdev) /* Each 1 Hz pulse should happen after (rate) ticks */ jz4740_rtc_reg_write(rtc, JZ_REG_RTC_REGULATOR, rate - 1); - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c index 15d8abda81fe..76ad7031a13d 100644 --- a/drivers/rtc/rtc-lpc32xx.c +++ b/drivers/rtc/rtc-lpc32xx.c @@ -239,7 +239,7 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev) rtc->rtc->ops = &lpc32xx_rtc_ops; rtc->rtc->range_max = U32_MAX; - err = rtc_register_device(rtc->rtc); + err = devm_rtc_register_device(rtc->rtc); if (err) return err; diff --git a/drivers/rtc/rtc-ls1x.c b/drivers/rtc/rtc-ls1x.c index 8bd34056fea0..5af26dc5c2a3 100644 --- a/drivers/rtc/rtc-ls1x.c +++ b/drivers/rtc/rtc-ls1x.c @@ -176,7 +176,7 @@ static int ls1x_rtc_probe(struct platform_device *pdev) rtcdev->range_min = RTC_TIMESTAMP_BEGIN_1900; rtcdev->range_max = RTC_TIMESTAMP_END_2099; - return rtc_register_device(rtcdev); + return devm_rtc_register_device(rtcdev); } static struct platform_driver ls1x_rtc_driver = { diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 8a89bc52b0d4..cce5b5284658 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -85,7 +85,7 @@ static const struct i2c_device_id m41t80_id[] = { }; MODULE_DEVICE_TABLE(i2c, m41t80_id); -static const struct of_device_id m41t80_of_match[] = { +static const __maybe_unused struct of_device_id m41t80_of_match[] = { { .compatible = "st,m41t62", .data = (void *)(M41T80_FEATURE_SQ | M41T80_FEATURE_SQ_ALT) @@ -158,21 +158,20 @@ static irqreturn_t m41t80_handle_irq(int irq, void *dev_id) { struct i2c_client *client = dev_id; struct m41t80_data *m41t80 = i2c_get_clientdata(client); - struct mutex *lock = &m41t80->rtc->ops_lock; unsigned long events = 0; int flags, flags_afe; - mutex_lock(lock); + rtc_lock(m41t80->rtc); flags_afe = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON); if (flags_afe < 0) { - mutex_unlock(lock); + rtc_unlock(m41t80->rtc); return IRQ_NONE; } flags = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS); if (flags <= 0) { - mutex_unlock(lock); + rtc_unlock(m41t80->rtc); return IRQ_NONE; } @@ -189,7 +188,7 @@ static irqreturn_t m41t80_handle_irq(int irq, void *dev_id) flags_afe); } - mutex_unlock(lock); + rtc_unlock(m41t80->rtc); return IRQ_HANDLED; } @@ -397,10 +396,13 @@ static int m41t80_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) return 0; } -static struct rtc_class_ops m41t80_rtc_ops = { +static const struct rtc_class_ops m41t80_rtc_ops = { .read_time = m41t80_rtc_read_time, .set_time = m41t80_rtc_set_time, .proc = m41t80_rtc_proc, + .read_alarm = m41t80_read_alarm, + .set_alarm = m41t80_set_alarm, + .alarm_irq_enable = m41t80_alarm_irq_enable, }; #ifdef CONFIG_PM_SLEEP @@ -913,13 +915,10 @@ static int m41t80_probe(struct i2c_client *client, wakeup_source = false; } } - if (client->irq > 0 || wakeup_source) { - m41t80_rtc_ops.read_alarm = m41t80_read_alarm; - m41t80_rtc_ops.set_alarm = m41t80_set_alarm; - m41t80_rtc_ops.alarm_irq_enable = m41t80_alarm_irq_enable; - /* Enable the wakealarm */ + if (client->irq > 0 || wakeup_source) device_init_wakeup(&client->dev, true); - } + else + clear_bit(RTC_FEATURE_ALARM, m41t80_data->rtc->features); m41t80_data->rtc->ops = &m41t80_rtc_ops; m41t80_data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; @@ -977,7 +976,7 @@ static int m41t80_probe(struct i2c_client *client, m41t80_sqw_register_clk(m41t80_data); #endif - rc = rtc_register_device(m41t80_data->rtc); + rc = devm_rtc_register_device(m41t80_data->rtc); if (rc) return rc; diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c index 67e218758a8b..1d2e99a70fce 100644 --- a/drivers/rtc/rtc-m48t59.c +++ b/drivers/rtc/rtc-m48t59.c @@ -313,11 +313,6 @@ static const struct rtc_class_ops m48t59_rtc_ops = { .alarm_irq_enable = m48t59_rtc_alarm_irq_enable, }; -static const struct rtc_class_ops m48t02_rtc_ops = { - .read_time = m48t59_rtc_read_time, - .set_time = m48t59_rtc_set_time, -}; - static int m48t59_nvram_read(void *priv, unsigned int offset, void *val, size_t size) { @@ -366,7 +361,6 @@ static int m48t59_rtc_probe(struct platform_device *pdev) struct m48t59_private *m48t59 = NULL; struct resource *res; int ret = -ENOMEM; - const struct rtc_class_ops *ops; struct nvmem_config nvmem_cfg = { .name = "m48t59-", .word_size = 1, @@ -438,17 +432,21 @@ static int m48t59_rtc_probe(struct platform_device *pdev) if (ret) return ret; } + + m48t59->rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(m48t59->rtc)) + return PTR_ERR(m48t59->rtc); + switch (pdata->type) { case M48T59RTC_TYPE_M48T59: - ops = &m48t59_rtc_ops; pdata->offset = 0x1ff0; break; case M48T59RTC_TYPE_M48T02: - ops = &m48t02_rtc_ops; + clear_bit(RTC_FEATURE_ALARM, m48t59->rtc->features); pdata->offset = 0x7f0; break; case M48T59RTC_TYPE_M48T08: - ops = &m48t02_rtc_ops; + clear_bit(RTC_FEATURE_ALARM, m48t59->rtc->features); pdata->offset = 0x1ff0; break; default: @@ -459,19 +457,14 @@ static int m48t59_rtc_probe(struct platform_device *pdev) spin_lock_init(&m48t59->lock); platform_set_drvdata(pdev, m48t59); - m48t59->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(m48t59->rtc)) - return PTR_ERR(m48t59->rtc); - - m48t59->rtc->nvram_old_abi = true; - m48t59->rtc->ops = ops; + m48t59->rtc->ops = &m48t59_rtc_ops; nvmem_cfg.size = pdata->offset; - ret = rtc_nvmem_register(m48t59->rtc, &nvmem_cfg); + ret = devm_rtc_nvmem_register(m48t59->rtc, &nvmem_cfg); if (ret) return ret; - ret = rtc_register_device(m48t59->rtc); + ret = devm_rtc_register_device(m48t59->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c index 75a0e73071d8..481c9525b1dd 100644 --- a/drivers/rtc/rtc-m48t86.c +++ b/drivers/rtc/rtc-m48t86.c @@ -254,13 +254,12 @@ static int m48t86_rtc_probe(struct platform_device *pdev) return PTR_ERR(info->rtc); info->rtc->ops = &m48t86_rtc_ops; - info->rtc->nvram_old_abi = true; - err = rtc_register_device(info->rtc); + err = devm_rtc_register_device(info->rtc); if (err) return err; - rtc_nvmem_register(info->rtc, &m48t86_nvmem_cfg); + devm_rtc_nvmem_register(info->rtc, &m48t86_nvmem_cfg); /* read battery status */ reg = m48t86_readb(&pdev->dev, M48T86_D); diff --git a/drivers/rtc/rtc-mc13xxx.c b/drivers/rtc/rtc-mc13xxx.c index d6802e6191cb..d4234e78497e 100644 --- a/drivers/rtc/rtc-mc13xxx.c +++ b/drivers/rtc/rtc-mc13xxx.c @@ -307,7 +307,7 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev) mc13xxx_unlock(mc13xxx); - ret = rtc_register_device(priv->rtc); + ret = devm_rtc_register_device(priv->rtc); if (ret) { mc13xxx_lock(mc13xxx); goto err_irq_request; diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c index 2ecd8752b088..dcfaf09946ee 100644 --- a/drivers/rtc/rtc-mc146818-lib.c +++ b/drivers/rtc/rtc-mc146818-lib.c @@ -8,41 +8,48 @@ #include <linux/acpi.h> #endif -/* - * Returns true if a clock update is in progress - */ -static inline unsigned char mc146818_is_updating(void) -{ - unsigned char uip; - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP); - spin_unlock_irqrestore(&rtc_lock, flags); - return uip; -} - unsigned int mc146818_get_time(struct rtc_time *time) { unsigned char ctrl; unsigned long flags; unsigned char century = 0; + bool retry; #ifdef CONFIG_MACH_DECSTATION unsigned int real_year; #endif +again: + spin_lock_irqsave(&rtc_lock, flags); + /* Ensure that the RTC is accessible. Bit 6 must be 0! */ + if (WARN_ON_ONCE((CMOS_READ(RTC_VALID) & 0x40) != 0)) { + spin_unlock_irqrestore(&rtc_lock, flags); + memset(time, 0xff, sizeof(*time)); + return 0; + } + /* - * read RTC once any update in progress is done. The update - * can take just over 2ms. We wait 20ms. There is no need to - * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP. - * If you need to know *exactly* when a second has started, enable - * periodic update complete interrupts, (via ioctl) and then - * immediately read /dev/rtc which will block until you get the IRQ. - * Once the read clears, read the RTC time (again via ioctl). Easy. + * Check whether there is an update in progress during which the + * readout is unspecified. The maximum update time is ~2ms. Poll + * every msec for completion. + * + * Store the second value before checking UIP so a long lasting NMI + * which happens to hit after the UIP check cannot make an update + * cycle invisible. */ - if (mc146818_is_updating()) - mdelay(20); + time->tm_sec = CMOS_READ(RTC_SECONDS); + + if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP) { + spin_unlock_irqrestore(&rtc_lock, flags); + mdelay(1); + goto again; + } + + /* Revalidate the above readout */ + if (time->tm_sec != CMOS_READ(RTC_SECONDS)) { + spin_unlock_irqrestore(&rtc_lock, flags); + goto again; + } /* * Only the values that we read from the RTC are set. We leave @@ -50,8 +57,6 @@ unsigned int mc146818_get_time(struct rtc_time *time) * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated * by the RTC when initially set to a non-zero value. */ - spin_lock_irqsave(&rtc_lock, flags); - time->tm_sec = CMOS_READ(RTC_SECONDS); time->tm_min = CMOS_READ(RTC_MINUTES); time->tm_hour = CMOS_READ(RTC_HOURS); time->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH); @@ -66,8 +71,24 @@ unsigned int mc146818_get_time(struct rtc_time *time) century = CMOS_READ(acpi_gbl_FADT.century); #endif ctrl = CMOS_READ(RTC_CONTROL); + /* + * Check for the UIP bit again. If it is set now then + * the above values may contain garbage. + */ + retry = CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP; + /* + * A NMI might have interrupted the above sequence so check whether + * the seconds value has changed which indicates that the NMI took + * longer than the UIP bit was set. Unlikely, but possible and + * there is also virt... + */ + retry |= time->tm_sec != CMOS_READ(RTC_SECONDS); + spin_unlock_irqrestore(&rtc_lock, flags); + if (retry) + goto again; + if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { time->tm_sec = bcd2bin(time->tm_sec); @@ -121,7 +142,6 @@ int mc146818_set_time(struct rtc_time *time) if (yrs > 255) /* They are unsigned */ return -EINVAL; - spin_lock_irqsave(&rtc_lock, flags); #ifdef CONFIG_MACH_DECSTATION real_yrs = yrs; leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) || @@ -150,10 +170,8 @@ int mc146818_set_time(struct rtc_time *time) /* These limits and adjustments are independent of * whether the chip is in binary mode or not. */ - if (yrs > 169) { - spin_unlock_irqrestore(&rtc_lock, flags); + if (yrs > 169) return -EINVAL; - } if (yrs >= 100) yrs -= 100; @@ -169,6 +187,7 @@ int mc146818_set_time(struct rtc_time *time) century = bin2bcd(century); } + spin_lock_irqsave(&rtc_lock, flags); save_control = CMOS_READ(RTC_CONTROL); CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL); save_freq_select = CMOS_READ(RTC_FREQ_SELECT); diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c index 21cbf7f892e8..bad7792b6ca5 100644 --- a/drivers/rtc/rtc-mcp795.c +++ b/drivers/rtc/rtc-mcp795.c @@ -350,10 +350,9 @@ static irqreturn_t mcp795_irq(int irq, void *data) { struct spi_device *spi = data; struct rtc_device *rtc = spi_get_drvdata(spi); - struct mutex *lock = &rtc->ops_lock; int ret; - mutex_lock(lock); + rtc_lock(rtc); /* Disable alarm. * There is no need to clear ALM0IF (Alarm 0 Interrupt Flag) bit, @@ -365,7 +364,7 @@ static irqreturn_t mcp795_irq(int irq, void *data) "Failed to disable alarm in IRQ (ret=%d)\n", ret); rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF); - mutex_unlock(lock); + rtc_unlock(rtc); return IRQ_HANDLED; } diff --git a/drivers/rtc/rtc-meson-vrtc.c b/drivers/rtc/rtc-meson-vrtc.c index 89e5ba0dae69..1463c8621561 100644 --- a/drivers/rtc/rtc-meson-vrtc.c +++ b/drivers/rtc/rtc-meson-vrtc.c @@ -65,7 +65,6 @@ static const struct rtc_class_ops meson_vrtc_ops = { static int meson_vrtc_probe(struct platform_device *pdev) { struct meson_vrtc_data *vrtc; - int ret; vrtc = devm_kzalloc(&pdev->dev, sizeof(*vrtc), GFP_KERNEL); if (!vrtc) @@ -84,11 +83,7 @@ static int meson_vrtc_probe(struct platform_device *pdev) return PTR_ERR(vrtc->rtc); vrtc->rtc->ops = &meson_vrtc_ops; - ret = rtc_register_device(vrtc->rtc); - if (ret) - return ret; - - return 0; + return devm_rtc_register_device(vrtc->rtc); } static int __maybe_unused meson_vrtc_suspend(struct device *dev) diff --git a/drivers/rtc/rtc-meson.c b/drivers/rtc/rtc-meson.c index 47ebcf834cc2..44bdc8b4a90d 100644 --- a/drivers/rtc/rtc-meson.c +++ b/drivers/rtc/rtc-meson.c @@ -365,11 +365,11 @@ static int meson_rtc_probe(struct platform_device *pdev) } meson_rtc_nvmem_config.priv = rtc; - ret = rtc_nvmem_register(rtc->rtc, &meson_rtc_nvmem_config); + ret = devm_rtc_nvmem_register(rtc->rtc, &meson_rtc_nvmem_config); if (ret) goto out_disable_vdd; - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) goto out_disable_vdd; @@ -380,7 +380,7 @@ out_disable_vdd: return ret; } -static const struct of_device_id meson_rtc_dt_match[] = { +static const __maybe_unused struct of_device_id meson_rtc_dt_match[] = { { .compatible = "amlogic,meson6-rtc", }, { .compatible = "amlogic,meson8-rtc", }, { .compatible = "amlogic,meson8b-rtc", }, diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c index 5c2ce71aa044..bb2ea9bc56f2 100644 --- a/drivers/rtc/rtc-mpc5121.c +++ b/drivers/rtc/rtc-mpc5121.c @@ -371,7 +371,7 @@ static int mpc5121_rtc_probe(struct platform_device *op) rtc->rtc->range_max = U32_MAX; } - err = rtc_register_device(rtc->rtc); + err = devm_rtc_register_device(rtc->rtc); if (err) goto out_dispose2; diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c deleted file mode 100644 index 17bf5394e1e5..000000000000 --- a/drivers/rtc/rtc-mrst.c +++ /dev/null @@ -1,521 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * rtc-mrst.c: Driver for Moorestown virtual RTC - * - * (C) Copyright 2009 Intel Corporation - * Author: Jacob Pan ([email protected]) - * Feng Tang ([email protected]) - * - * Note: - * VRTC is emulated by system controller firmware, the real HW - * RTC is located in the PMIC device. SCU FW shadows PMIC RTC - * in a memory mapped IO space that is visible to the host IA - * processor. - * - * This driver is based upon drivers/rtc/rtc-cmos.c - */ - -/* - * Note: - * * vRTC only supports binary mode and 24H mode - * * vRTC only support PIE and AIE, no UIE, and its PIE only happens - * at 23:59:59pm everyday, no support for adjustable frequency - * * Alarm function is also limited to hr/min/sec. - */ - -#include <linux/mod_devicetable.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/kernel.h> -#include <linux/mc146818rtc.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/sfi.h> - -#include <asm/intel_scu_ipc.h> -#include <asm/intel-mid.h> -#include <asm/intel_mid_vrtc.h> - -struct mrst_rtc { - struct rtc_device *rtc; - struct device *dev; - int irq; - - u8 enabled_wake; - u8 suspend_ctrl; -}; - -static const char driver_name[] = "rtc_mrst"; - -#define RTC_IRQMASK (RTC_PF | RTC_AF) - -static inline int is_intr(u8 rtc_intr) -{ - if (!(rtc_intr & RTC_IRQF)) - return 0; - return rtc_intr & RTC_IRQMASK; -} - -static inline unsigned char vrtc_is_updating(void) -{ - unsigned char uip; - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - uip = (vrtc_cmos_read(RTC_FREQ_SELECT) & RTC_UIP); - spin_unlock_irqrestore(&rtc_lock, flags); - return uip; -} - -/* - * rtc_time's year contains the increment over 1900, but vRTC's YEAR - * register can't be programmed to value larger than 0x64, so vRTC - * driver chose to use 1972 (1970 is UNIX time start point) as the base, - * and does the translation at read/write time. - * - * Why not just use 1970 as the offset? it's because using 1972 will - * make it consistent in leap year setting for both vrtc and low-level - * physical rtc devices. Then why not use 1960 as the offset? If we use - * 1960, for a device's first use, its YEAR register is 0 and the system - * year will be parsed as 1960 which is not a valid UNIX time and will - * cause many applications to fail mysteriously. - */ -static int mrst_read_time(struct device *dev, struct rtc_time *time) -{ - unsigned long flags; - - if (vrtc_is_updating()) - msleep(20); - - spin_lock_irqsave(&rtc_lock, flags); - time->tm_sec = vrtc_cmos_read(RTC_SECONDS); - time->tm_min = vrtc_cmos_read(RTC_MINUTES); - time->tm_hour = vrtc_cmos_read(RTC_HOURS); - time->tm_mday = vrtc_cmos_read(RTC_DAY_OF_MONTH); - time->tm_mon = vrtc_cmos_read(RTC_MONTH); - time->tm_year = vrtc_cmos_read(RTC_YEAR); - spin_unlock_irqrestore(&rtc_lock, flags); - - /* Adjust for the 1972/1900 */ - time->tm_year += 72; - time->tm_mon--; - return 0; -} - -static int mrst_set_time(struct device *dev, struct rtc_time *time) -{ - int ret; - unsigned long flags; - unsigned char mon, day, hrs, min, sec; - unsigned int yrs; - - yrs = time->tm_year; - mon = time->tm_mon + 1; /* tm_mon starts at zero */ - day = time->tm_mday; - hrs = time->tm_hour; - min = time->tm_min; - sec = time->tm_sec; - - if (yrs < 72 || yrs > 172) - return -EINVAL; - yrs -= 72; - - spin_lock_irqsave(&rtc_lock, flags); - - vrtc_cmos_write(yrs, RTC_YEAR); - vrtc_cmos_write(mon, RTC_MONTH); - vrtc_cmos_write(day, RTC_DAY_OF_MONTH); - vrtc_cmos_write(hrs, RTC_HOURS); - vrtc_cmos_write(min, RTC_MINUTES); - vrtc_cmos_write(sec, RTC_SECONDS); - - spin_unlock_irqrestore(&rtc_lock, flags); - - ret = intel_scu_ipc_simple_command(IPCMSG_VRTC, IPC_CMD_VRTC_SETTIME); - return ret; -} - -static int mrst_read_alarm(struct device *dev, struct rtc_wkalrm *t) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - unsigned char rtc_control; - - if (mrst->irq <= 0) - return -EIO; - - /* vRTC only supports binary mode */ - spin_lock_irq(&rtc_lock); - t->time.tm_sec = vrtc_cmos_read(RTC_SECONDS_ALARM); - t->time.tm_min = vrtc_cmos_read(RTC_MINUTES_ALARM); - t->time.tm_hour = vrtc_cmos_read(RTC_HOURS_ALARM); - - rtc_control = vrtc_cmos_read(RTC_CONTROL); - spin_unlock_irq(&rtc_lock); - - t->enabled = !!(rtc_control & RTC_AIE); - t->pending = 0; - - return 0; -} - -static void mrst_checkintr(struct mrst_rtc *mrst, unsigned char rtc_control) -{ - unsigned char rtc_intr; - - /* - * NOTE after changing RTC_xIE bits we always read INTR_FLAGS; - * allegedly some older rtcs need that to handle irqs properly - */ - rtc_intr = vrtc_cmos_read(RTC_INTR_FLAGS); - rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF; - if (is_intr(rtc_intr)) - rtc_update_irq(mrst->rtc, 1, rtc_intr); -} - -static void mrst_irq_enable(struct mrst_rtc *mrst, unsigned char mask) -{ - unsigned char rtc_control; - - /* - * Flush any pending IRQ status, notably for update irqs, - * before we enable new IRQs - */ - rtc_control = vrtc_cmos_read(RTC_CONTROL); - mrst_checkintr(mrst, rtc_control); - - rtc_control |= mask; - vrtc_cmos_write(rtc_control, RTC_CONTROL); - - mrst_checkintr(mrst, rtc_control); -} - -static void mrst_irq_disable(struct mrst_rtc *mrst, unsigned char mask) -{ - unsigned char rtc_control; - - rtc_control = vrtc_cmos_read(RTC_CONTROL); - rtc_control &= ~mask; - vrtc_cmos_write(rtc_control, RTC_CONTROL); - mrst_checkintr(mrst, rtc_control); -} - -static int mrst_set_alarm(struct device *dev, struct rtc_wkalrm *t) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - unsigned char hrs, min, sec; - int ret = 0; - - if (!mrst->irq) - return -EIO; - - hrs = t->time.tm_hour; - min = t->time.tm_min; - sec = t->time.tm_sec; - - spin_lock_irq(&rtc_lock); - /* Next rtc irq must not be from previous alarm setting */ - mrst_irq_disable(mrst, RTC_AIE); - - /* Update alarm */ - vrtc_cmos_write(hrs, RTC_HOURS_ALARM); - vrtc_cmos_write(min, RTC_MINUTES_ALARM); - vrtc_cmos_write(sec, RTC_SECONDS_ALARM); - - spin_unlock_irq(&rtc_lock); - - ret = intel_scu_ipc_simple_command(IPCMSG_VRTC, IPC_CMD_VRTC_SETALARM); - if (ret) - return ret; - - spin_lock_irq(&rtc_lock); - if (t->enabled) - mrst_irq_enable(mrst, RTC_AIE); - - spin_unlock_irq(&rtc_lock); - - return 0; -} - -/* Currently, the vRTC doesn't support UIE ON/OFF */ -static int mrst_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - if (enabled) - mrst_irq_enable(mrst, RTC_AIE); - else - mrst_irq_disable(mrst, RTC_AIE); - spin_unlock_irqrestore(&rtc_lock, flags); - return 0; -} - - -#if IS_ENABLED(CONFIG_RTC_INTF_PROC) - -static int mrst_procfs(struct device *dev, struct seq_file *seq) -{ - unsigned char rtc_control; - - spin_lock_irq(&rtc_lock); - rtc_control = vrtc_cmos_read(RTC_CONTROL); - spin_unlock_irq(&rtc_lock); - - seq_printf(seq, - "periodic_IRQ\t: %s\n" - "alarm\t\t: %s\n" - "BCD\t\t: no\n" - "periodic_freq\t: daily (not adjustable)\n", - (rtc_control & RTC_PIE) ? "on" : "off", - (rtc_control & RTC_AIE) ? "on" : "off"); - - return 0; -} - -#else -#define mrst_procfs NULL -#endif - -static const struct rtc_class_ops mrst_rtc_ops = { - .read_time = mrst_read_time, - .set_time = mrst_set_time, - .read_alarm = mrst_read_alarm, - .set_alarm = mrst_set_alarm, - .proc = mrst_procfs, - .alarm_irq_enable = mrst_rtc_alarm_irq_enable, -}; - -static struct mrst_rtc mrst_rtc; - -/* - * When vRTC IRQ is captured by SCU FW, FW will clear the AIE bit in - * Reg B, so no need for this driver to clear it - */ -static irqreturn_t mrst_rtc_irq(int irq, void *p) -{ - u8 irqstat; - - spin_lock(&rtc_lock); - /* This read will clear all IRQ flags inside Reg C */ - irqstat = vrtc_cmos_read(RTC_INTR_FLAGS); - spin_unlock(&rtc_lock); - - irqstat &= RTC_IRQMASK | RTC_IRQF; - if (is_intr(irqstat)) { - rtc_update_irq(p, 1, irqstat); - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -static int vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, - int rtc_irq) -{ - int retval = 0; - unsigned char rtc_control; - - /* There can be only one ... */ - if (mrst_rtc.dev) - return -EBUSY; - - if (!iomem) - return -ENODEV; - - iomem = devm_request_mem_region(dev, iomem->start, resource_size(iomem), - driver_name); - if (!iomem) { - dev_dbg(dev, "i/o mem already in use.\n"); - return -EBUSY; - } - - mrst_rtc.irq = rtc_irq; - mrst_rtc.dev = dev; - dev_set_drvdata(dev, &mrst_rtc); - - mrst_rtc.rtc = devm_rtc_allocate_device(dev); - if (IS_ERR(mrst_rtc.rtc)) - return PTR_ERR(mrst_rtc.rtc); - - mrst_rtc.rtc->ops = &mrst_rtc_ops; - - rename_region(iomem, dev_name(&mrst_rtc.rtc->dev)); - - spin_lock_irq(&rtc_lock); - mrst_irq_disable(&mrst_rtc, RTC_PIE | RTC_AIE); - rtc_control = vrtc_cmos_read(RTC_CONTROL); - spin_unlock_irq(&rtc_lock); - - if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY))) - dev_dbg(dev, "TODO: support more than 24-hr BCD mode\n"); - - if (rtc_irq) { - retval = devm_request_irq(dev, rtc_irq, mrst_rtc_irq, - 0, dev_name(&mrst_rtc.rtc->dev), - mrst_rtc.rtc); - if (retval < 0) { - dev_dbg(dev, "IRQ %d is already in use, err %d\n", - rtc_irq, retval); - goto cleanup0; - } - } - - retval = rtc_register_device(mrst_rtc.rtc); - if (retval) - goto cleanup0; - - dev_dbg(dev, "initialised\n"); - return 0; - -cleanup0: - mrst_rtc.dev = NULL; - dev_err(dev, "rtc-mrst: unable to initialise\n"); - return retval; -} - -static void rtc_mrst_do_shutdown(void) -{ - spin_lock_irq(&rtc_lock); - mrst_irq_disable(&mrst_rtc, RTC_IRQMASK); - spin_unlock_irq(&rtc_lock); -} - -static void rtc_mrst_do_remove(struct device *dev) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - - rtc_mrst_do_shutdown(); - - mrst->rtc = NULL; - mrst->dev = NULL; -} - -#ifdef CONFIG_PM_SLEEP -static int mrst_suspend(struct device *dev) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - unsigned char tmp; - - /* Only the alarm might be a wakeup event source */ - spin_lock_irq(&rtc_lock); - mrst->suspend_ctrl = tmp = vrtc_cmos_read(RTC_CONTROL); - if (tmp & (RTC_PIE | RTC_AIE)) { - unsigned char mask; - - if (device_may_wakeup(dev)) - mask = RTC_IRQMASK & ~RTC_AIE; - else - mask = RTC_IRQMASK; - tmp &= ~mask; - vrtc_cmos_write(tmp, RTC_CONTROL); - - mrst_checkintr(mrst, tmp); - } - spin_unlock_irq(&rtc_lock); - - if (tmp & RTC_AIE) { - mrst->enabled_wake = 1; - enable_irq_wake(mrst->irq); - } - - dev_dbg(&mrst_rtc.rtc->dev, "suspend%s, ctrl %02x\n", - (tmp & RTC_AIE) ? ", alarm may wake" : "", - tmp); - - return 0; -} - -/* - * We want RTC alarms to wake us from the deep power saving state - */ -static inline int mrst_poweroff(struct device *dev) -{ - return mrst_suspend(dev); -} - -static int mrst_resume(struct device *dev) -{ - struct mrst_rtc *mrst = dev_get_drvdata(dev); - unsigned char tmp = mrst->suspend_ctrl; - - /* Re-enable any irqs previously active */ - if (tmp & RTC_IRQMASK) { - unsigned char mask; - - if (mrst->enabled_wake) { - disable_irq_wake(mrst->irq); - mrst->enabled_wake = 0; - } - - spin_lock_irq(&rtc_lock); - do { - vrtc_cmos_write(tmp, RTC_CONTROL); - - mask = vrtc_cmos_read(RTC_INTR_FLAGS); - mask &= (tmp & RTC_IRQMASK) | RTC_IRQF; - if (!is_intr(mask)) - break; - - rtc_update_irq(mrst->rtc, 1, mask); - tmp &= ~RTC_AIE; - } while (mask & RTC_AIE); - spin_unlock_irq(&rtc_lock); - } - - dev_dbg(&mrst_rtc.rtc->dev, "resume, ctrl %02x\n", tmp); - - return 0; -} - -static SIMPLE_DEV_PM_OPS(mrst_pm_ops, mrst_suspend, mrst_resume); -#define MRST_PM_OPS (&mrst_pm_ops) - -#else -#define MRST_PM_OPS NULL - -static inline int mrst_poweroff(struct device *dev) -{ - return -ENOSYS; -} - -#endif - -static int vrtc_mrst_platform_probe(struct platform_device *pdev) -{ - return vrtc_mrst_do_probe(&pdev->dev, - platform_get_resource(pdev, IORESOURCE_MEM, 0), - platform_get_irq(pdev, 0)); -} - -static int vrtc_mrst_platform_remove(struct platform_device *pdev) -{ - rtc_mrst_do_remove(&pdev->dev); - return 0; -} - -static void vrtc_mrst_platform_shutdown(struct platform_device *pdev) -{ - if (system_state == SYSTEM_POWER_OFF && !mrst_poweroff(&pdev->dev)) - return; - - rtc_mrst_do_shutdown(); -} - -MODULE_ALIAS("platform:vrtc_mrst"); - -static struct platform_driver vrtc_mrst_platform_driver = { - .probe = vrtc_mrst_platform_probe, - .remove = vrtc_mrst_platform_remove, - .shutdown = vrtc_mrst_platform_shutdown, - .driver = { - .name = driver_name, - .pm = MRST_PM_OPS, - } -}; - -module_platform_driver(vrtc_mrst_platform_driver); - -MODULE_AUTHOR("Jacob Pan; Feng Tang"); -MODULE_DESCRIPTION("Driver for Moorestown virtual RTC"); -MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-mt2712.c b/drivers/rtc/rtc-mt2712.c index d5f691c8a035..cd92a9788351 100644 --- a/drivers/rtc/rtc-mt2712.c +++ b/drivers/rtc/rtc-mt2712.c @@ -352,7 +352,7 @@ static int mt2712_rtc_probe(struct platform_device *pdev) mt2712_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; mt2712_rtc->rtc->range_max = MT2712_RTC_TIMESTAMP_END_2127; - return rtc_register_device(mt2712_rtc->rtc); + return devm_rtc_register_device(mt2712_rtc->rtc); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index f8b1353777ba..6655035e5164 100644 --- a/drivers/rtc/rtc-mt6397.c +++ b/drivers/rtc/rtc-mt6397.c @@ -31,7 +31,8 @@ static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc) MTK_RTC_POLL_DELAY_US, MTK_RTC_POLL_TIMEOUT); if (ret < 0) - dev_err(rtc->dev, "failed to write WRTGE: %d\n", ret); + dev_err(rtc->rtc_dev->dev.parent, + "failed to write WRTGR: %d\n", ret); return ret; } @@ -300,7 +301,7 @@ static int mtk_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->ops = &mtk_rtc_ops; - return rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc->rtc_dev); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index d5f190e578e4..6c526e2ec56d 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -200,11 +200,6 @@ static irqreturn_t mv_rtc_interrupt(int irq, void *data) static const struct rtc_class_ops mv_rtc_ops = { .read_time = mv_rtc_read_time, .set_time = mv_rtc_set_time, -}; - -static const struct rtc_class_ops mv_rtc_alarm_ops = { - .read_time = mv_rtc_read_time, - .set_time = mv_rtc_set_time, .read_alarm = mv_rtc_read_alarm, .set_alarm = mv_rtc_set_alarm, .alarm_irq_enable = mv_rtc_alarm_irq_enable, @@ -268,17 +263,16 @@ static int __init mv_rtc_probe(struct platform_device *pdev) } } - if (pdata->irq >= 0) { + if (pdata->irq >= 0) device_init_wakeup(&pdev->dev, 1); - pdata->rtc->ops = &mv_rtc_alarm_ops; - } else { - pdata->rtc->ops = &mv_rtc_ops; - } + else + clear_bit(RTC_FEATURE_ALARM, pdata->rtc->features); + pdata->rtc->ops = &mv_rtc_ops; pdata->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; pdata->rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (!ret) return 0; out: diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c index a8cfbde048f4..db57dda7ab97 100644 --- a/drivers/rtc/rtc-mxc.c +++ b/drivers/rtc/rtc-mxc.c @@ -70,27 +70,12 @@ struct rtc_plat_data { enum imx_rtc_type devtype; }; -static const struct platform_device_id imx_rtc_devtype[] = { - { - .name = "imx1-rtc", - .driver_data = IMX1_RTC, - }, { - .name = "imx21-rtc", - .driver_data = IMX21_RTC, - }, { - /* sentinel */ - } -}; -MODULE_DEVICE_TABLE(platform, imx_rtc_devtype); - -#ifdef CONFIG_OF static const struct of_device_id imx_rtc_dt_ids[] = { { .compatible = "fsl,imx1-rtc", .data = (const void *)IMX1_RTC }, { .compatible = "fsl,imx21-rtc", .data = (const void *)IMX21_RTC }, {} }; MODULE_DEVICE_TABLE(of, imx_rtc_dt_ids); -#endif static inline int is_imx1_rtc(struct rtc_plat_data *data) { @@ -204,11 +189,10 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) struct platform_device *pdev = dev_id; struct rtc_plat_data *pdata = platform_get_drvdata(pdev); void __iomem *ioaddr = pdata->ioaddr; - unsigned long flags; u32 status; u32 events = 0; - spin_lock_irqsave(&pdata->rtc->irq_lock, flags); + spin_lock(&pdata->rtc->irq_lock); status = readw(ioaddr + RTC_RTCISR) & readw(ioaddr + RTC_RTCIENR); /* clear interrupt sources */ writew(status, ioaddr + RTC_RTCISR); @@ -224,7 +208,7 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) events |= (RTC_PF | RTC_IRQF); rtc_update_irq(pdata->rtc, 1, events); - spin_unlock_irqrestore(&pdata->rtc->irq_lock, flags); + spin_unlock(&pdata->rtc->irq_lock); return IRQ_HANDLED; } @@ -322,17 +306,12 @@ static int mxc_rtc_probe(struct platform_device *pdev) u32 reg; unsigned long rate; int ret; - const struct of_device_id *of_id; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; - of_id = of_match_device(imx_rtc_dt_ids, &pdev->dev); - if (of_id) - pdata->devtype = (enum imx_rtc_type)of_id->data; - else - pdata->devtype = pdev->id_entry->driver_data; + pdata->devtype = (enum imx_rtc_type)of_device_get_match_data(&pdev->dev); pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->ioaddr)) @@ -428,7 +407,7 @@ static int mxc_rtc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to enable irq wake\n"); } - ret = rtc_register_device(rtc); + ret = devm_rtc_register_device(rtc); return ret; } @@ -438,7 +417,6 @@ static struct platform_driver mxc_rtc_driver = { .name = "mxc_rtc", .of_match_table = of_match_ptr(imx_rtc_dt_ids), }, - .id_table = imx_rtc_devtype, .probe = mxc_rtc_probe, }; diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c index 91534560fe2a..a577a74aaf75 100644 --- a/drivers/rtc/rtc-mxc_v2.c +++ b/drivers/rtc/rtc-mxc_v2.c @@ -74,13 +74,12 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) struct device *dev = dev_id; struct mxc_rtc_data *pdata = dev_get_drvdata(dev); void __iomem *ioaddr = pdata->ioaddr; - unsigned long flags; u32 lp_status; u32 lp_cr; - spin_lock_irqsave(&pdata->lock, flags); + spin_lock(&pdata->lock); if (clk_enable(pdata->clk)) { - spin_unlock_irqrestore(&pdata->lock, flags); + spin_unlock(&pdata->lock); return IRQ_NONE; } @@ -104,7 +103,7 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) mxc_rtc_sync_lp_locked(dev, ioaddr); clk_disable(pdata->clk); - spin_unlock_irqrestore(&pdata->lock, flags); + spin_unlock(&pdata->lock); return IRQ_HANDLED; } @@ -354,7 +353,7 @@ static int mxc_rtc_probe(struct platform_device *pdev) return ret; } - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (ret < 0) clk_unprepare(pdata->clk); diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index c20fc7937dfa..dc7db2477f88 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -879,18 +879,18 @@ static int omap_rtc_probe(struct platform_device *pdev) /* Support ext_wakeup pinconf */ rtc_pinctrl_desc.name = dev_name(&pdev->dev); - rtc->pctldev = pinctrl_register(&rtc_pinctrl_desc, &pdev->dev, rtc); + rtc->pctldev = devm_pinctrl_register(&pdev->dev, &rtc_pinctrl_desc, rtc); if (IS_ERR(rtc->pctldev)) { dev_err(&pdev->dev, "Couldn't register pinctrl driver\n"); ret = PTR_ERR(rtc->pctldev); goto err; } - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) - goto err_deregister_pinctrl; + goto err; - rtc_nvmem_register(rtc->rtc, &omap_rtc_nvmem_config); + devm_rtc_nvmem_register(rtc->rtc, &omap_rtc_nvmem_config); if (rtc->is_pmic_controller) { if (!pm_power_off) { @@ -901,8 +901,6 @@ static int omap_rtc_probe(struct platform_device *pdev) return 0; -err_deregister_pinctrl: - pinctrl_unregister(rtc->pctldev); err: clk_disable_unprepare(rtc->clk); device_init_wakeup(&pdev->dev, false); @@ -945,9 +943,6 @@ static int omap_rtc_remove(struct platform_device *pdev) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); - /* Remove ext_wakeup pinconf */ - pinctrl_unregister(rtc->pctldev); - return 0; } diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c index 7b9f8bcf86fe..f8f49a969c23 100644 --- a/drivers/rtc/rtc-opal.c +++ b/drivers/rtc/rtc-opal.c @@ -224,32 +224,35 @@ static int opal_tpo_alarm_irq_enable(struct device *dev, unsigned int enabled) return enabled ? 0 : opal_set_tpo_time(dev, &alarm); } -static struct rtc_class_ops opal_rtc_ops = { +static const struct rtc_class_ops opal_rtc_ops = { .read_time = opal_get_rtc_time, .set_time = opal_set_rtc_time, + .read_alarm = opal_get_tpo_time, + .set_alarm = opal_set_tpo_time, + .alarm_irq_enable = opal_tpo_alarm_irq_enable, }; static int opal_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; + rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); + if (pdev->dev.of_node && (of_property_read_bool(pdev->dev.of_node, "wakeup-source") || - of_property_read_bool(pdev->dev.of_node, "has-tpo")/* legacy */)) { + of_property_read_bool(pdev->dev.of_node, "has-tpo")/* legacy */)) device_set_wakeup_capable(&pdev->dev, true); - opal_rtc_ops.read_alarm = opal_get_tpo_time; - opal_rtc_ops.set_alarm = opal_set_tpo_time; - opal_rtc_ops.alarm_irq_enable = opal_tpo_alarm_irq_enable; - } - - rtc = devm_rtc_device_register(&pdev->dev, DRVNAME, &opal_rtc_ops, - THIS_MODULE); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); + else + clear_bit(RTC_FEATURE_ALARM, rtc->features); + rtc->ops = &opal_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_0000; + rtc->range_max = RTC_TIMESTAMP_END_9999; rtc->uie_unsupported = 1; - return 0; + return devm_rtc_register_device(rtc); } static const struct of_device_id opal_rtc_match[] = { diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c index 178bfb1dea21..8c7a98a5452c 100644 --- a/drivers/rtc/rtc-pcap.c +++ b/drivers/rtc/rtc-pcap.c @@ -163,7 +163,7 @@ static int __init pcap_rtc_probe(struct platform_device *pdev) if (err) return err; - return rtc_register_device(pcap_rtc->rtc); + return devm_rtc_register_device(pcap_rtc->rtc); } static int __exit pcap_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c index c3691fa4210e..0f58cac81d8c 100644 --- a/drivers/rtc/rtc-pcf2123.c +++ b/drivers/rtc/rtc-pcf2123.c @@ -307,11 +307,10 @@ static int pcf2123_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) static irqreturn_t pcf2123_rtc_irq(int irq, void *dev) { struct pcf2123_data *pcf2123 = dev_get_drvdata(dev); - struct mutex *lock = &pcf2123->rtc->ops_lock; unsigned int val = 0; int ret = IRQ_NONE; - mutex_lock(lock); + rtc_lock(pcf2123->rtc); regmap_read(pcf2123->map, PCF2123_REG_CTRL2, &val); /* Alarm? */ @@ -324,7 +323,7 @@ static irqreturn_t pcf2123_rtc_irq(int irq, void *dev) rtc_update_irq(pcf2123->rtc, 1, RTC_IRQF | RTC_AF); } - mutex_unlock(lock); + rtc_unlock(pcf2123->rtc); return ret; } @@ -434,7 +433,7 @@ static int pcf2123_probe(struct spi_device *spi) rtc->range_max = RTC_TIMESTAMP_END_2099; rtc->set_start_time = true; - ret = rtc_register_device(rtc); + ret = devm_rtc_register_device(rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index ed6316992cbb..d13c20a2adf7 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -26,6 +26,7 @@ /* Control register 1 */ #define PCF2127_REG_CTRL1 0x00 +#define PCF2127_BIT_CTRL1_POR_OVRD BIT(3) #define PCF2127_BIT_CTRL1_TSF1 BIT(4) /* Control register 2 */ #define PCF2127_REG_CTRL2 0x01 @@ -57,6 +58,9 @@ #define PCF2127_REG_ALARM_DM 0x0D #define PCF2127_REG_ALARM_DW 0x0E #define PCF2127_BIT_ALARM_AE BIT(7) +/* CLKOUT control register */ +#define PCF2127_REG_CLKOUT 0x0f +#define PCF2127_BIT_CLKOUT_OTPR BIT(5) /* Watchdog registers */ #define PCF2127_REG_WD_CTL 0x10 #define PCF2127_BIT_WD_CTL_TF0 BIT(0) @@ -225,12 +229,6 @@ static int pcf2127_rtc_ioctl(struct device *dev, } } -static const struct rtc_class_ops pcf2127_rtc_ops = { - .ioctl = pcf2127_rtc_ioctl, - .read_time = pcf2127_rtc_read_time, - .set_time = pcf2127_rtc_set_time, -}; - static int pcf2127_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) { @@ -243,10 +241,8 @@ static int pcf2127_nvmem_read(void *priv, unsigned int offset, if (ret) return ret; - ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, - val, bytes); - - return ret ?: bytes; + return regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, + val, bytes); } static int pcf2127_nvmem_write(void *priv, unsigned int offset, @@ -261,10 +257,8 @@ static int pcf2127_nvmem_write(void *priv, unsigned int offset, if (ret) return ret; - ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, - val, bytes); - - return ret ?: bytes; + return regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, + val, bytes); } /* watchdog driver */ @@ -335,6 +329,37 @@ static const struct watchdog_ops pcf2127_watchdog_ops = { .set_timeout = pcf2127_wdt_set_timeout, }; +static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127) +{ + u32 wdd_timeout; + int ret; + + if (!IS_ENABLED(CONFIG_WATCHDOG) || + !device_property_read_bool(dev, "reset-source")) + return 0; + + pcf2127->wdd.parent = dev; + pcf2127->wdd.info = &pcf2127_wdt_info; + pcf2127->wdd.ops = &pcf2127_watchdog_ops; + pcf2127->wdd.min_timeout = PCF2127_WD_VAL_MIN; + pcf2127->wdd.max_timeout = PCF2127_WD_VAL_MAX; + pcf2127->wdd.timeout = PCF2127_WD_VAL_DEFAULT; + pcf2127->wdd.min_hw_heartbeat_ms = 500; + pcf2127->wdd.status = WATCHDOG_NOWAYOUT_INIT_STATUS; + + watchdog_set_drvdata(&pcf2127->wdd, pcf2127); + + /* Test if watchdog timer is started by bootloader */ + ret = regmap_read(pcf2127->regmap, PCF2127_REG_WD_VAL, &wdd_timeout); + if (ret) + return ret; + + if (wdd_timeout) + set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status); + + return devm_watchdog_register_device(dev, &pcf2127->wdd); +} + /* Alarm */ static int pcf2127_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { @@ -432,7 +457,7 @@ static irqreturn_t pcf2127_rtc_irq(int irq, void *dev) return IRQ_HANDLED; } -static const struct rtc_class_ops pcf2127_rtc_alrm_ops = { +static const struct rtc_class_ops pcf2127_rtc_ops = { .ioctl = pcf2127_rtc_ioctl, .read_time = pcf2127_rtc_read_time, .set_time = pcf2127_rtc_set_time, @@ -533,11 +558,11 @@ static const struct attribute_group pcf2127_attr_group = { }; static int pcf2127_probe(struct device *dev, struct regmap *regmap, - int alarm_irq, const char *name, bool has_nvmem) + int alarm_irq, const char *name, bool is_pcf2127) { struct pcf2127 *pcf2127; - u32 wdd_timeout; int ret = 0; + unsigned int val; dev_dbg(dev, "%s\n", __func__); @@ -558,8 +583,9 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099; pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */ pcf2127->rtc->uie_unsupported = 1; + clear_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); - if (alarm_irq >= 0) { + if (alarm_irq > 0) { ret = devm_request_threaded_irq(dev, alarm_irq, NULL, pcf2127_rtc_irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT, @@ -570,23 +596,12 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, } } - if (alarm_irq >= 0 || device_property_read_bool(dev, "wakeup-source")) { + if (alarm_irq > 0 || device_property_read_bool(dev, "wakeup-source")) { device_init_wakeup(dev, true); - pcf2127->rtc->ops = &pcf2127_rtc_alrm_ops; + set_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); } - pcf2127->wdd.parent = dev; - pcf2127->wdd.info = &pcf2127_wdt_info; - pcf2127->wdd.ops = &pcf2127_watchdog_ops; - pcf2127->wdd.min_timeout = PCF2127_WD_VAL_MIN; - pcf2127->wdd.max_timeout = PCF2127_WD_VAL_MAX; - pcf2127->wdd.timeout = PCF2127_WD_VAL_DEFAULT; - pcf2127->wdd.min_hw_heartbeat_ms = 500; - pcf2127->wdd.status = WATCHDOG_NOWAYOUT_INIT_STATUS; - - watchdog_set_drvdata(&pcf2127->wdd, pcf2127); - - if (has_nvmem) { + if (is_pcf2127) { struct nvmem_config nvmem_cfg = { .priv = pcf2127, .reg_read = pcf2127_nvmem_read, @@ -594,13 +609,37 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, .size = 512, }; - ret = rtc_nvmem_register(pcf2127->rtc, &nvmem_cfg); + ret = devm_rtc_nvmem_register(pcf2127->rtc, &nvmem_cfg); + } + + /* + * The "Power-On Reset Override" facility prevents the RTC to do a reset + * after power on. For normal operation the PORO must be disabled. + */ + regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1, + PCF2127_BIT_CTRL1_POR_OVRD); + + ret = regmap_read(pcf2127->regmap, PCF2127_REG_CLKOUT, &val); + if (ret < 0) + return ret; + + if (!(val & PCF2127_BIT_CLKOUT_OTPR)) { + ret = regmap_set_bits(pcf2127->regmap, PCF2127_REG_CLKOUT, + PCF2127_BIT_CLKOUT_OTPR); + if (ret < 0) + return ret; + + msleep(100); } /* * Watchdog timer enabled and reset pin /RST activated when timed out. * Select 1Hz clock source for watchdog timer. * Note: Countdown timer disabled and not available. + * For pca2129, pcf2129, only bit[7] is for Symbol WD_CD + * of register watchdg_tim_ctl. The bit[6] is labeled + * as T. Bits labeled as T must always be written with + * logic 0. */ ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_WD_CTL, PCF2127_BIT_WD_CTL_CD1 | @@ -608,26 +647,14 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, PCF2127_BIT_WD_CTL_TF1 | PCF2127_BIT_WD_CTL_TF0, PCF2127_BIT_WD_CTL_CD1 | - PCF2127_BIT_WD_CTL_CD0 | + (is_pcf2127 ? PCF2127_BIT_WD_CTL_CD0 : 0) | PCF2127_BIT_WD_CTL_TF1); if (ret) { dev_err(dev, "%s: watchdog config (wd_ctl) failed\n", __func__); return ret; } - /* Test if watchdog timer is started by bootloader */ - ret = regmap_read(pcf2127->regmap, PCF2127_REG_WD_VAL, &wdd_timeout); - if (ret) - return ret; - - if (wdd_timeout) - set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status); - -#ifdef CONFIG_WATCHDOG - ret = devm_watchdog_register_device(dev, &pcf2127->wdd); - if (ret) - return ret; -#endif /* CONFIG_WATCHDOG */ + pcf2127_watchdog_init(dev, pcf2127); /* * Disable battery low/switch-over timestamp and interrupts. @@ -680,7 +707,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, return ret; } - return rtc_register_device(pcf2127->rtc); + return devm_rtc_register_device(pcf2127->rtc); } #ifdef CONFIG_OF diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index f8b99cb72959..aef6c1ee8bb0 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -311,14 +311,6 @@ static const struct rtc_class_ops pcf85063_rtc_ops = { .set_time = pcf85063_rtc_set_time, .read_offset = pcf85063_read_offset, .set_offset = pcf85063_set_offset, - .ioctl = pcf85063_ioctl, -}; - -static const struct rtc_class_ops pcf85063_rtc_ops_alarm = { - .read_time = pcf85063_rtc_read_time, - .set_time = pcf85063_rtc_set_time, - .read_offset = pcf85063_read_offset, - .set_offset = pcf85063_set_offset, .read_alarm = pcf85063_rtc_read_alarm, .set_alarm = pcf85063_rtc_set_alarm, .alarm_irq_enable = pcf85063_rtc_alarm_irq_enable, @@ -509,15 +501,6 @@ static struct clk *pcf85063_clkout_register_clk(struct pcf85063 *pcf85063) } #endif -static const struct pcf85063_config pcf85063a_config = { - .regmap = { - .reg_bits = 8, - .val_bits = 8, - .max_register = 0x11, - }, - .has_alarms = 1, -}; - static const struct pcf85063_config pcf85063tp_config = { .regmap = { .reg_bits = 8, @@ -526,16 +509,6 @@ static const struct pcf85063_config pcf85063tp_config = { }, }; -static const struct pcf85063_config rv8263_config = { - .regmap = { - .reg_bits = 8, - .val_bits = 8, - .max_register = 0x11, - }, - .has_alarms = 1, - .force_cap_7000 = 1, -}; - static int pcf85063_probe(struct i2c_client *client) { struct pcf85063 *pcf85063; @@ -587,6 +560,7 @@ static int pcf85063_probe(struct i2c_client *client) pcf85063->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; pcf85063->rtc->range_max = RTC_TIMESTAMP_END_2099; pcf85063->rtc->uie_unsupported = 1; + clear_bit(RTC_FEATURE_ALARM, pcf85063->rtc->features); if (config->has_alarms && client->irq > 0) { err = devm_request_threaded_irq(&client->dev, client->irq, @@ -597,7 +571,7 @@ static int pcf85063_probe(struct i2c_client *client) dev_warn(&pcf85063->rtc->dev, "unable to request IRQ, alarms disabled\n"); } else { - pcf85063->rtc->ops = &pcf85063_rtc_ops_alarm; + set_bit(RTC_FEATURE_ALARM, pcf85063->rtc->features); device_init_wakeup(&client->dev, true); err = dev_pm_set_wake_irq(&client->dev, client->irq); if (err) @@ -607,17 +581,36 @@ static int pcf85063_probe(struct i2c_client *client) } nvmem_cfg.priv = pcf85063->regmap; - rtc_nvmem_register(pcf85063->rtc, &nvmem_cfg); + devm_rtc_nvmem_register(pcf85063->rtc, &nvmem_cfg); #ifdef CONFIG_COMMON_CLK /* register clk in common clk framework */ pcf85063_clkout_register_clk(pcf85063); #endif - return rtc_register_device(pcf85063->rtc); + return devm_rtc_register_device(pcf85063->rtc); } #ifdef CONFIG_OF +static const struct pcf85063_config pcf85063a_config = { + .regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x11, + }, + .has_alarms = 1, +}; + +static const struct pcf85063_config rv8263_config = { + .regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x11, + }, + .has_alarms = 1, + .force_cap_7000 = 1, +}; + static const struct of_device_id pcf85063_of_match[] = { { .compatible = "nxp,pcf85063", .data = &pcf85063tp_config }, { .compatible = "nxp,pcf85063tp", .data = &pcf85063tp_config }, diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c index 57d351dfe272..5e1e7b2a8c9a 100644 --- a/drivers/rtc/rtc-pcf8523.c +++ b/drivers/rtc/rtc-pcf8523.c @@ -12,18 +12,18 @@ #define DRIVER_NAME "rtc-pcf8523" #define REG_CONTROL1 0x00 -#define REG_CONTROL1_CAP_SEL (1 << 7) -#define REG_CONTROL1_STOP (1 << 5) +#define REG_CONTROL1_CAP_SEL BIT(7) +#define REG_CONTROL1_STOP BIT(5) #define REG_CONTROL3 0x02 -#define REG_CONTROL3_PM_BLD (1 << 7) /* battery low detection disabled */ -#define REG_CONTROL3_PM_VDD (1 << 6) /* switch-over disabled */ -#define REG_CONTROL3_PM_DSM (1 << 5) /* direct switching mode */ +#define REG_CONTROL3_PM_BLD BIT(7) /* battery low detection disabled */ +#define REG_CONTROL3_PM_VDD BIT(6) /* switch-over disabled */ +#define REG_CONTROL3_PM_DSM BIT(5) /* direct switching mode */ #define REG_CONTROL3_PM_MASK 0xe0 -#define REG_CONTROL3_BLF (1 << 2) /* battery low bit, read-only */ +#define REG_CONTROL3_BLF BIT(2) /* battery low bit, read-only */ #define REG_SECONDS 0x03 -#define REG_SECONDS_OS (1 << 7) +#define REG_SECONDS_OS BIT(7) #define REG_MINUTES 0x04 #define REG_HOURS 0x05 @@ -226,17 +226,6 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm) u8 regs[8]; int err; - /* - * The hardware can only store values between 0 and 99 in it's YEAR - * register (with 99 overflowing to 0 on increment). - * After 2100-02-28 we could start interpreting the year to be in the - * interval [2100, 2199], but there is no path to switch in a smooth way - * because the chip handles YEAR=0x00 (and the out-of-spec - * YEAR=0xa0) as a leap year, but 2100 isn't. - */ - if (tm->tm_year < 100 || tm->tm_year >= 200) - return -EINVAL; - err = pcf8523_stop_rtc(client); if (err < 0) return err; @@ -356,12 +345,15 @@ static int pcf8523_probe(struct i2c_client *client, if (err < 0) return err; - rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME, - &pcf8523_rtc_ops, THIS_MODULE); + rtc = devm_rtc_allocate_device(&client->dev); if (IS_ERR(rtc)) return PTR_ERR(rtc); - return 0; + rtc->ops = &pcf8523_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; + + return devm_rtc_register_device(rtc); } static const struct i2c_device_id pcf8523_id[] = { diff --git a/drivers/rtc/rtc-pcf85363.c b/drivers/rtc/rtc-pcf85363.c index 3450d615974d..bb3e9ba75f6c 100644 --- a/drivers/rtc/rtc-pcf85363.c +++ b/drivers/rtc/rtc-pcf85363.c @@ -285,11 +285,6 @@ static irqreturn_t pcf85363_rtc_handle_irq(int irq, void *dev_id) static const struct rtc_class_ops rtc_ops = { .read_time = pcf85363_rtc_read_time, .set_time = pcf85363_rtc_set_time, -}; - -static const struct rtc_class_ops rtc_ops_alarm = { - .read_time = pcf85363_rtc_read_time, - .set_time = pcf85363_rtc_set_time, .read_alarm = pcf85363_rtc_read_alarm, .set_alarm = pcf85363_rtc_set_alarm, .alarm_irq_enable = pcf85363_rtc_alarm_irq_enable, @@ -403,6 +398,7 @@ static int pcf85363_probe(struct i2c_client *client, pcf85363->rtc->ops = &rtc_ops; pcf85363->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; pcf85363->rtc->range_max = RTC_TIMESTAMP_END_2099; + clear_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features); if (client->irq > 0) { regmap_write(pcf85363->regmap, CTRL_FLAGS, 0); @@ -415,20 +411,20 @@ static int pcf85363_probe(struct i2c_client *client, if (ret) dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); else - pcf85363->rtc->ops = &rtc_ops_alarm; + set_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features); } - ret = rtc_register_device(pcf85363->rtc); + ret = devm_rtc_register_device(pcf85363->rtc); for (i = 0; i < config->num_nvram; i++) { nvmem_cfg[i].priv = pcf85363; - rtc_nvmem_register(pcf85363->rtc, &nvmem_cfg[i]); + devm_rtc_nvmem_register(pcf85363->rtc, &nvmem_cfg[i]); } return ret; } -static const struct of_device_id dev_ids[] = { +static const __maybe_unused struct of_device_id dev_ids[] = { { .compatible = "nxp,pcf85263", .data = &pcf_85263_config }, { .compatible = "nxp,pcf85363", .data = &pcf_85363_config }, { /* sentinel */ } diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c index 2dc30eafa639..18f12f36eb2b 100644 --- a/drivers/rtc/rtc-pcf8563.c +++ b/drivers/rtc/rtc-pcf8563.c @@ -582,7 +582,7 @@ static int pcf8563_probe(struct i2c_client *client, } } - err = rtc_register_device(pcf8563->rtc); + err = devm_rtc_register_device(pcf8563->rtc); if (err) return err; @@ -597,6 +597,7 @@ static int pcf8563_probe(struct i2c_client *client, static const struct i2c_device_id pcf8563_id[] = { { "pcf8563", 0 }, { "rtc8564", 0 }, + { "pca8565", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, pcf8563_id); @@ -606,6 +607,7 @@ static const struct of_device_id pcf8563_of_match[] = { { .compatible = "nxp,pcf8563" }, { .compatible = "epson,rtc8564" }, { .compatible = "microcrystal,rv8564" }, + { .compatible = "nxp,pca8565" }, {} }; MODULE_DEVICE_TABLE(of, pcf8563_of_match); diff --git a/drivers/rtc/rtc-pic32.c b/drivers/rtc/rtc-pic32.c index 2b6946744654..7fb9145c43bd 100644 --- a/drivers/rtc/rtc-pic32.c +++ b/drivers/rtc/rtc-pic32.c @@ -338,7 +338,7 @@ static int pic32_rtc_probe(struct platform_device *pdev) pdata->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; pdata->rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (ret) goto err_nortc; diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index ebe03eba8f5f..5a880516f3e8 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -121,7 +121,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) if (ret) goto err_irq; - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) goto err_reg; diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index c6b89273feba..7c3967df4f9a 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -352,23 +352,21 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) } } - if (!adev->irq[0]) { - /* When there's no interrupt, no point in exposing the alarm */ - ops->read_alarm = NULL; - ops->set_alarm = NULL; - ops->alarm_irq_enable = NULL; - } + if (!adev->irq[0]) + clear_bit(RTC_FEATURE_ALARM, ldata->rtc->features); device_init_wakeup(&adev->dev, true); ldata->rtc = devm_rtc_allocate_device(&adev->dev); - if (IS_ERR(ldata->rtc)) - return PTR_ERR(ldata->rtc); + if (IS_ERR(ldata->rtc)) { + ret = PTR_ERR(ldata->rtc); + goto out; + } ldata->rtc->ops = ops; ldata->rtc->range_min = vendor->range_min; ldata->rtc->range_max = vendor->range_max; - ret = rtc_register_device(ldata->rtc); + ret = devm_rtc_register_device(ldata->rtc); if (ret) goto out; diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index b45ee2cb2c04..eb206597a8fa 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -20,6 +20,7 @@ /* RTC_CTRL register bit fields */ #define PM8xxx_RTC_ENABLE BIT(7) #define PM8xxx_RTC_ALARM_CLEAR BIT(0) +#define PM8xxx_RTC_ALARM_ENABLE BIT(7) #define NUM_8_BIT_RTC_REGS 0x4 @@ -265,6 +266,7 @@ rtc_rw_fail: static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { int rc; + unsigned int ctrl_reg; u8 value[NUM_8_BIT_RTC_REGS]; unsigned long secs; struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); @@ -282,6 +284,13 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) rtc_time64_to_tm(secs, &alarm->time); + rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); + if (rc) { + dev_err(dev, "Read from RTC alarm control register failed\n"); + return rc; + } + alarm->enabled = !!(ctrl_reg & PM8xxx_RTC_ALARM_ENABLE); + dev_dbg(dev, "Alarm set for - h:m:s=%ptRt, y-m-d=%ptRdr\n", &alarm->time, &alarm->time); @@ -343,16 +352,15 @@ static irqreturn_t pm8xxx_alarm_trigger(int irq, void *dev_id) const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; unsigned int ctrl_reg; int rc; - unsigned long irq_flags; rtc_update_irq(rtc_dd->rtc, 1, RTC_IRQF | RTC_AF); - spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); + spin_lock(&rtc_dd->ctrl_reg_lock); /* Clear the alarm enable bit */ rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); if (rc) { - spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); + spin_unlock(&rtc_dd->ctrl_reg_lock); goto rtc_alarm_handled; } @@ -360,13 +368,13 @@ static irqreturn_t pm8xxx_alarm_trigger(int irq, void *dev_id) rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); if (rc) { - spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); + spin_unlock(&rtc_dd->ctrl_reg_lock); dev_err(rtc_dd->rtc_dev, "Write to alarm control register failed\n"); goto rtc_alarm_handled; } - spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); + spin_unlock(&rtc_dd->ctrl_reg_lock); /* Clear RTC alarm register */ rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl2, &ctrl_reg); @@ -508,7 +516,7 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) return rc; } - return rtc_register_device(rtc_dd->rtc); + return devm_rtc_register_device(rtc_dd->rtc); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-ps3.c b/drivers/rtc/rtc-ps3.c index f0336d691e6c..6b098734c715 100644 --- a/drivers/rtc/rtc-ps3.c +++ b/drivers/rtc/rtc-ps3.c @@ -56,7 +56,7 @@ static int __init ps3_rtc_probe(struct platform_device *dev) platform_set_drvdata(dev, rtc); - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct platform_driver ps3_rtc_driver = { diff --git a/drivers/rtc/rtc-r7301.c b/drivers/rtc/rtc-r7301.c index aaf1b95e3990..5dbaeb7af648 100644 --- a/drivers/rtc/rtc-r7301.c +++ b/drivers/rtc/rtc-r7301.c @@ -320,11 +320,10 @@ static irqreturn_t rtc7301_irq_handler(int irq, void *dev_id) { struct rtc_device *rtc = dev_id; struct rtc7301_priv *priv = dev_get_drvdata(rtc->dev.parent); - unsigned long flags; irqreturn_t ret = IRQ_NONE; u8 alrm_ctrl; - spin_lock_irqsave(&priv->lock, flags); + spin_lock(&priv->lock); rtc7301_select_bank(priv, 1); @@ -335,7 +334,7 @@ static irqreturn_t rtc7301_irq_handler(int irq, void *dev_id) rtc_update_irq(rtc, 1, RTC_IRQF | RTC_AF); } - spin_unlock_irqrestore(&priv->lock, flags); + spin_unlock(&priv->lock); return ret; } diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c index 84f0d25259ae..60a3c3d7499b 100644 --- a/drivers/rtc/rtc-r9701.c +++ b/drivers/rtc/rtc-r9701.c @@ -75,8 +75,6 @@ static int r9701_get_datetime(struct device *dev, struct rtc_time *dt) if (ret) return ret; - memset(dt, 0, sizeof(*dt)); - dt->tm_sec = bcd2bin(buf[0]); /* RSECCNT */ dt->tm_min = bcd2bin(buf[1]); /* RMINCNT */ dt->tm_hour = bcd2bin(buf[2]); /* RHRCNT */ @@ -85,20 +83,12 @@ static int r9701_get_datetime(struct device *dev, struct rtc_time *dt) dt->tm_mon = bcd2bin(buf[4]) - 1; /* RMONCNT */ dt->tm_year = bcd2bin(buf[5]) + 100; /* RYRCNT */ - /* the rtc device may contain illegal values on power up - * according to the data sheet. make sure they are valid. - */ - return 0; } static int r9701_set_datetime(struct device *dev, struct rtc_time *dt) { - int ret, year; - - year = dt->tm_year + 1900; - if (year >= 2100 || year < 2000) - return -EINVAL; + int ret; ret = write_reg(dev, RHRCNT, bin2bcd(dt->tm_hour)); ret = ret ? ret : write_reg(dev, RMINCNT, bin2bcd(dt->tm_min)); @@ -106,7 +96,6 @@ static int r9701_set_datetime(struct device *dev, struct rtc_time *dt) ret = ret ? ret : write_reg(dev, RDAYCNT, bin2bcd(dt->tm_mday)); ret = ret ? ret : write_reg(dev, RMONCNT, bin2bcd(dt->tm_mon + 1)); ret = ret ? ret : write_reg(dev, RYRCNT, bin2bcd(dt->tm_year - 100)); - ret = ret ? ret : write_reg(dev, RWKCNT, 1 << dt->tm_wday); return ret; } @@ -119,7 +108,6 @@ static const struct rtc_class_ops r9701_rtc_ops = { static int r9701_probe(struct spi_device *spi) { struct rtc_device *rtc; - struct rtc_time dt; unsigned char tmp; int res; @@ -130,35 +118,16 @@ static int r9701_probe(struct spi_device *spi) return -ENODEV; } - /* - * The device seems to be present. Now check if the registers - * contain invalid values. If so, try to write a default date: - * 2000/1/1 00:00:00 - */ - if (r9701_get_datetime(&spi->dev, &dt)) { - dev_info(&spi->dev, "trying to repair invalid date/time\n"); - dt.tm_sec = 0; - dt.tm_min = 0; - dt.tm_hour = 0; - dt.tm_mday = 1; - dt.tm_mon = 0; - dt.tm_year = 100; - - if (r9701_set_datetime(&spi->dev, &dt) || - r9701_get_datetime(&spi->dev, &dt)) { - dev_err(&spi->dev, "cannot repair RTC register\n"); - return -ENODEV; - } - } - - rtc = devm_rtc_device_register(&spi->dev, "r9701", - &r9701_rtc_ops, THIS_MODULE); + rtc = devm_rtc_allocate_device(&spi->dev); if (IS_ERR(rtc)) return PTR_ERR(rtc); spi_set_drvdata(spi, rtc); + rtc->ops = &r9701_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; - return 0; + return devm_rtc_register_device(rtc); } static struct spi_driver r9701_driver = { diff --git a/drivers/rtc/rtc-rc5t619.c b/drivers/rtc/rtc-rc5t619.c index dd1a20977478..e73102a39f1b 100644 --- a/drivers/rtc/rtc-rc5t619.c +++ b/drivers/rtc/rtc-rc5t619.c @@ -426,7 +426,7 @@ static int rc5t619_rtc_probe(struct platform_device *pdev) dev_warn(&pdev->dev, "rc5t619 interrupt is disabled\n"); } - return rtc_register_device(rtc->rtc); + return devm_rtc_register_device(rtc->rtc); } static struct platform_driver rc5t619_rtc_driver = { diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c index c0334c602e88..e920da8c08da 100644 --- a/drivers/rtc/rtc-rk808.c +++ b/drivers/rtc/rtc-rk808.c @@ -447,7 +447,7 @@ static int rk808_rtc_probe(struct platform_device *pdev) return ret; } - return rtc_register_device(rk808_rtc->rtc); + return devm_rtc_register_device(rk808_rtc->rtc); } static struct platform_driver rk808_rtc_driver = { diff --git a/drivers/rtc/rtc-rp5c01.c b/drivers/rtc/rtc-rp5c01.c index 8776eadbdd3a..44afa6d996e7 100644 --- a/drivers/rtc/rtc-rp5c01.c +++ b/drivers/rtc/rtc-rp5c01.c @@ -251,16 +251,15 @@ static int __init rp5c01_rtc_probe(struct platform_device *dev) return PTR_ERR(rtc); rtc->ops = &rp5c01_rtc_ops; - rtc->nvram_old_abi = true; priv->rtc = rtc; nvmem_cfg.priv = priv; - error = rtc_nvmem_register(rtc, &nvmem_cfg); + error = devm_rtc_nvmem_register(rtc, &nvmem_cfg); if (error) return error; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct platform_driver rp5c01_rtc_driver = { diff --git a/drivers/rtc/rtc-rs5c313.c b/drivers/rtc/rtc-rs5c313.c index 89f38e3e917d..e98f85f34206 100644 --- a/drivers/rtc/rtc-rs5c313.c +++ b/drivers/rtc/rtc-rs5c313.c @@ -366,15 +366,15 @@ static const struct rtc_class_ops rs5c313_rtc_ops = { static int rs5c313_rtc_probe(struct platform_device *pdev) { - struct rtc_device *rtc = devm_rtc_device_register(&pdev->dev, "rs5c313", - &rs5c313_rtc_ops, THIS_MODULE); + struct rtc_device *rtc; - if (IS_ERR(rtc)) - return PTR_ERR(rtc); + rs5c313_init_port(); + rs5c313_check_xstp_bit(); - platform_set_drvdata(pdev, rtc); + rtc = devm_rtc_device_register(&pdev->dev, "rs5c313", &rs5c313_rtc_ops, + THIS_MODULE); - return 0; + return PTR_ERR_OR_ZERO(rtc); } static struct platform_driver rs5c313_rtc_platform_driver = { @@ -384,27 +384,7 @@ static struct platform_driver rs5c313_rtc_platform_driver = { .probe = rs5c313_rtc_probe, }; -static int __init rs5c313_rtc_init(void) -{ - int err; - - err = platform_driver_register(&rs5c313_rtc_platform_driver); - if (err) - return err; - - rs5c313_init_port(); - rs5c313_check_xstp_bit(); - - return 0; -} - -static void __exit rs5c313_rtc_exit(void) -{ - platform_driver_unregister(&rs5c313_rtc_platform_driver); -} - -module_init(rs5c313_rtc_init); -module_exit(rs5c313_rtc_exit); +module_platform_driver(rs5c313_rtc_platform_driver); MODULE_AUTHOR("kogiidena , Nobuhiro Iwamatsu <[email protected]>"); MODULE_DESCRIPTION("Ricoh RS5C313 RTC device driver"); diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c index 47c13678449e..fec633f80789 100644 --- a/drivers/rtc/rtc-rs5c348.c +++ b/drivers/rtc/rtc-rs5c348.c @@ -197,7 +197,7 @@ static int rs5c348_probe(struct spi_device *spi) rtc->ops = &rs5c348_rtc_ops; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct spi_driver rs5c348_driver = { diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c index 3bd6eaa0dcf6..80980414890c 100644 --- a/drivers/rtc/rtc-rs5c372.c +++ b/drivers/rtc/rtc-rs5c372.c @@ -83,7 +83,7 @@ static const struct i2c_device_id rs5c372_id[] = { }; MODULE_DEVICE_TABLE(i2c, rs5c372_id); -static const struct of_device_id rs5c372_of_match[] = { +static const __maybe_unused struct of_device_id rs5c372_of_match[] = { { .compatible = "ricoh,r2025sd", .data = (void *)rtc_r2025sd diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c index ec84db0b3d7a..0c48d980d06a 100644 --- a/drivers/rtc/rtc-rv3028.c +++ b/drivers/rtc/rtc-rv3028.c @@ -71,6 +71,7 @@ #define RV3028_EVT_CTRL_TSR BIT(2) +#define RV3028_EEPROM_CMD_UPDATE 0x11 #define RV3028_EEPROM_CMD_WRITE 0x21 #define RV3028_EEPROM_CMD_READ 0x22 @@ -95,7 +96,7 @@ struct rv3028_data { #endif }; -static u16 rv3028_trickle_resistors[] = {1000, 3000, 6000, 11000}; +static u16 rv3028_trickle_resistors[] = {3000, 5000, 9000, 15000}; static ssize_t timestamp0_store(struct device *dev, struct device_attribute *attr, @@ -171,6 +172,88 @@ static const struct attribute_group rv3028_attr_group = { .attrs = rv3028_attrs, }; +static int rv3028_exit_eerd(struct rv3028_data *rv3028, u32 eerd) +{ + if (eerd) + return 0; + + return regmap_update_bits(rv3028->regmap, RV3028_CTRL1, RV3028_CTRL1_EERD, 0); +} + +static int rv3028_enter_eerd(struct rv3028_data *rv3028, u32 *eerd) +{ + u32 ctrl1, status; + int ret; + + ret = regmap_read(rv3028->regmap, RV3028_CTRL1, &ctrl1); + if (ret) + return ret; + + *eerd = ctrl1 & RV3028_CTRL1_EERD; + if (*eerd) + return 0; + + ret = regmap_update_bits(rv3028->regmap, RV3028_CTRL1, + RV3028_CTRL1_EERD, RV3028_CTRL1_EERD); + if (ret) + return ret; + + ret = regmap_read_poll_timeout(rv3028->regmap, RV3028_STATUS, status, + !(status & RV3028_STATUS_EEBUSY), + RV3028_EEBUSY_POLL, RV3028_EEBUSY_TIMEOUT); + if (ret) { + rv3028_exit_eerd(rv3028, *eerd); + + return ret; + } + + return 0; +} + +static int rv3028_update_eeprom(struct rv3028_data *rv3028, u32 eerd) +{ + u32 status; + int ret; + + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, 0x0); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, RV3028_EEPROM_CMD_UPDATE); + if (ret) + goto exit_eerd; + + usleep_range(63000, RV3028_EEBUSY_TIMEOUT); + + ret = regmap_read_poll_timeout(rv3028->regmap, RV3028_STATUS, status, + !(status & RV3028_STATUS_EEBUSY), + RV3028_EEBUSY_POLL, RV3028_EEBUSY_TIMEOUT); + +exit_eerd: + rv3028_exit_eerd(rv3028, eerd); + + return ret; +} + +static int rv3028_update_cfg(struct rv3028_data *rv3028, unsigned int reg, + unsigned int mask, unsigned int val) +{ + u32 eerd; + int ret; + + ret = rv3028_enter_eerd(rv3028, &eerd); + if (ret) + return ret; + + ret = regmap_update_bits(rv3028->regmap, reg, mask, val); + if (ret) { + rv3028_exit_eerd(rv3028, eerd); + return ret; + } + + return rv3028_update_eeprom(rv3028, eerd); +} + static irqreturn_t rv3028_handle_irq(int irq, void *dev_id) { struct rv3028_data *rv3028 = dev_id; @@ -182,8 +265,7 @@ static irqreturn_t rv3028_handle_irq(int irq, void *dev_id) return IRQ_NONE; } - if (status & RV3028_STATUS_PORF) - dev_warn(&rv3028->rtc->dev, "Voltage low, data loss detected.\n"); + status &= ~RV3028_STATUS_PORF; if (status & RV3028_STATUS_TF) { status |= RV3028_STATUS_TF; @@ -228,10 +310,8 @@ static int rv3028_get_time(struct device *dev, struct rtc_time *tm) if (ret < 0) return ret; - if (status & RV3028_STATUS_PORF) { - dev_warn(dev, "Voltage low, data is invalid.\n"); + if (status & RV3028_STATUS_PORF) return -EINVAL; - } ret = regmap_bulk_read(rv3028->regmap, RV3028_SEC, date, sizeof(date)); if (ret) @@ -404,17 +484,32 @@ static int rv3028_read_offset(struct device *dev, long *offset) static int rv3028_set_offset(struct device *dev, long offset) { struct rv3028_data *rv3028 = dev_get_drvdata(dev); + u32 eerd; int ret; offset = clamp(offset, -244141L, 243187L) * 1000; offset = DIV_ROUND_CLOSEST(offset, OFFSET_STEP_PPT); + ret = rv3028_enter_eerd(rv3028, &eerd); + if (ret) + return ret; + ret = regmap_write(rv3028->regmap, RV3028_OFFSET, offset >> 1); if (ret < 0) - return ret; + goto exit_eerd; + + ret = regmap_update_bits(rv3028->regmap, RV3028_BACKUP, BIT(7), + offset << 7); + if (ret < 0) + goto exit_eerd; + + return rv3028_update_eeprom(rv3028, eerd); + +exit_eerd: + rv3028_exit_eerd(rv3028, eerd); + + return ret; - return regmap_update_bits(rv3028->regmap, RV3028_BACKUP, BIT(7), - offset << 7); } static int rv3028_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) @@ -451,49 +546,36 @@ static int rv3028_nvram_read(void *priv, unsigned int offset, void *val, static int rv3028_eeprom_write(void *priv, unsigned int offset, void *val, size_t bytes) { - u32 status, ctrl1; - int i, ret, err; + struct rv3028_data *rv3028 = priv; + u32 status, eerd; + int i, ret; u8 *buf = val; - ret = regmap_read(priv, RV3028_CTRL1, &ctrl1); + ret = rv3028_enter_eerd(rv3028, &eerd); if (ret) return ret; - if (!(ctrl1 & RV3028_CTRL1_EERD)) { - ret = regmap_update_bits(priv, RV3028_CTRL1, - RV3028_CTRL1_EERD, RV3028_CTRL1_EERD); - if (ret) - return ret; - - ret = regmap_read_poll_timeout(priv, RV3028_STATUS, status, - !(status & RV3028_STATUS_EEBUSY), - RV3028_EEBUSY_POLL, - RV3028_EEBUSY_TIMEOUT); - if (ret) - goto restore_eerd; - } - for (i = 0; i < bytes; i++) { - ret = regmap_write(priv, RV3028_EEPROM_ADDR, offset + i); + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_ADDR, offset + i); if (ret) goto restore_eerd; - ret = regmap_write(priv, RV3028_EEPROM_DATA, buf[i]); + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_DATA, buf[i]); if (ret) goto restore_eerd; - ret = regmap_write(priv, RV3028_EEPROM_CMD, 0x0); + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, 0x0); if (ret) goto restore_eerd; - ret = regmap_write(priv, RV3028_EEPROM_CMD, + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, RV3028_EEPROM_CMD_WRITE); if (ret) goto restore_eerd; usleep_range(RV3028_EEBUSY_POLL, RV3028_EEBUSY_TIMEOUT); - ret = regmap_read_poll_timeout(priv, RV3028_STATUS, status, + ret = regmap_read_poll_timeout(rv3028->regmap, RV3028_STATUS, status, !(status & RV3028_STATUS_EEBUSY), RV3028_EEBUSY_POLL, RV3028_EEBUSY_TIMEOUT); @@ -502,13 +584,7 @@ static int rv3028_eeprom_write(void *priv, unsigned int offset, void *val, } restore_eerd: - if (!(ctrl1 & RV3028_CTRL1_EERD)) - { - err = regmap_update_bits(priv, RV3028_CTRL1, RV3028_CTRL1_EERD, - 0); - if (err && !ret) - ret = err; - } + rv3028_exit_eerd(rv3028, eerd); return ret; } @@ -516,63 +592,44 @@ restore_eerd: static int rv3028_eeprom_read(void *priv, unsigned int offset, void *val, size_t bytes) { - u32 status, ctrl1, data; - int i, ret, err; + struct rv3028_data *rv3028 = priv; + u32 status, eerd, data; + int i, ret; u8 *buf = val; - ret = regmap_read(priv, RV3028_CTRL1, &ctrl1); + ret = rv3028_enter_eerd(rv3028, &eerd); if (ret) return ret; - if (!(ctrl1 & RV3028_CTRL1_EERD)) { - ret = regmap_update_bits(priv, RV3028_CTRL1, - RV3028_CTRL1_EERD, RV3028_CTRL1_EERD); - if (ret) - return ret; - - ret = regmap_read_poll_timeout(priv, RV3028_STATUS, status, - !(status & RV3028_STATUS_EEBUSY), - RV3028_EEBUSY_POLL, - RV3028_EEBUSY_TIMEOUT); - if (ret) - goto restore_eerd; - } - for (i = 0; i < bytes; i++) { - ret = regmap_write(priv, RV3028_EEPROM_ADDR, offset + i); + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_ADDR, offset + i); if (ret) goto restore_eerd; - ret = regmap_write(priv, RV3028_EEPROM_CMD, 0x0); + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, 0x0); if (ret) goto restore_eerd; - ret = regmap_write(priv, RV3028_EEPROM_CMD, + ret = regmap_write(rv3028->regmap, RV3028_EEPROM_CMD, RV3028_EEPROM_CMD_READ); if (ret) goto restore_eerd; - ret = regmap_read_poll_timeout(priv, RV3028_STATUS, status, + ret = regmap_read_poll_timeout(rv3028->regmap, RV3028_STATUS, status, !(status & RV3028_STATUS_EEBUSY), RV3028_EEBUSY_POLL, RV3028_EEBUSY_TIMEOUT); if (ret) goto restore_eerd; - ret = regmap_read(priv, RV3028_EEPROM_DATA, &data); + ret = regmap_read(rv3028->regmap, RV3028_EEPROM_DATA, &data); if (ret) goto restore_eerd; buf[i] = data; } restore_eerd: - if (!(ctrl1 & RV3028_CTRL1_EERD)) - { - err = regmap_update_bits(priv, RV3028_CTRL1, RV3028_CTRL1_EERD, - 0); - if (err && !ret) - ret = err; - } + rv3028_exit_eerd(rv3028, eerd); return ret; } @@ -619,24 +676,23 @@ static int rv3028_clkout_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { int i, ret; + u32 enabled; struct rv3028_data *rv3028 = clkout_hw_to_rv3028(hw); + ret = regmap_read(rv3028->regmap, RV3028_CLKOUT, &enabled); + if (ret < 0) + return ret; + ret = regmap_write(rv3028->regmap, RV3028_CLKOUT, 0x0); if (ret < 0) return ret; - for (i = 0; i < ARRAY_SIZE(clkout_rates); i++) { - if (clkout_rates[i] == rate) { - ret = regmap_update_bits(rv3028->regmap, - RV3028_CLKOUT, - RV3028_CLKOUT_FD_MASK, i); - if (ret < 0) - return ret; + enabled &= RV3028_CLKOUT_CLKOE; - return regmap_write(rv3028->regmap, RV3028_CLKOUT, - RV3028_CLKOUT_CLKSY | RV3028_CLKOUT_CLKOE); - } - } + for (i = 0; i < ARRAY_SIZE(clkout_rates); i++) + if (clkout_rates[i] == rate) + return rv3028_update_cfg(rv3028, RV3028_CLKOUT, 0xff, + RV3028_CLKOUT_CLKSY | enabled | i); return -EINVAL; } @@ -711,9 +767,12 @@ static int rv3028_clkout_register_clk(struct rv3028_data *rv3028, } #endif -static struct rtc_class_ops rv3028_rtc_ops = { +static const struct rtc_class_ops rv3028_rtc_ops = { .read_time = rv3028_get_time, .set_time = rv3028_set_time, + .read_alarm = rv3028_get_alarm, + .set_alarm = rv3028_set_alarm, + .alarm_irq_enable = rv3028_alarm_irq_enable, .read_offset = rv3028_read_offset, .set_offset = rv3028_set_offset, .ioctl = rv3028_ioctl, @@ -764,9 +823,6 @@ static int rv3028_probe(struct i2c_client *client) if (ret < 0) return ret; - if (status & RV3028_STATUS_PORF) - dev_warn(&client->dev, "Voltage low, data loss detected.\n"); - if (status & RV3028_STATUS_AF) dev_warn(&client->dev, "An alarm may have been missed.\n"); @@ -782,12 +838,10 @@ static int rv3028_probe(struct i2c_client *client) if (ret) { dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); client->irq = 0; - } else { - rv3028_rtc_ops.read_alarm = rv3028_get_alarm; - rv3028_rtc_ops.set_alarm = rv3028_set_alarm; - rv3028_rtc_ops.alarm_irq_enable = rv3028_alarm_irq_enable; } } + if (!client->irq) + clear_bit(RTC_FEATURE_ALARM, rv3028->rtc->features); ret = regmap_update_bits(rv3028->regmap, RV3028_CTRL1, RV3028_CTRL1_WADA, RV3028_CTRL1_WADA); @@ -811,10 +865,8 @@ static int rv3028_probe(struct i2c_client *client) break; if (i < ARRAY_SIZE(rv3028_trickle_resistors)) { - ret = regmap_update_bits(rv3028->regmap, RV3028_BACKUP, - RV3028_BACKUP_TCE | - RV3028_BACKUP_TCR_MASK, - RV3028_BACKUP_TCE | i); + ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE | + RV3028_BACKUP_TCR_MASK, RV3028_BACKUP_TCE | i); if (ret) return ret; } else { @@ -829,14 +881,14 @@ static int rv3028_probe(struct i2c_client *client) rv3028->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; rv3028->rtc->range_max = RTC_TIMESTAMP_END_2099; rv3028->rtc->ops = &rv3028_rtc_ops; - ret = rtc_register_device(rv3028->rtc); + ret = devm_rtc_register_device(rv3028->rtc); if (ret) return ret; nvmem_cfg.priv = rv3028->regmap; - rtc_nvmem_register(rv3028->rtc, &nvmem_cfg); - eeprom_cfg.priv = rv3028->regmap; - rtc_nvmem_register(rv3028->rtc, &eeprom_cfg); + devm_rtc_nvmem_register(rv3028->rtc, &nvmem_cfg); + eeprom_cfg.priv = rv3028; + devm_rtc_nvmem_register(rv3028->rtc, &eeprom_cfg); rv3028->rtc->max_user_freq = 1; @@ -846,7 +898,7 @@ static int rv3028_probe(struct i2c_client *client) return 0; } -static const struct of_device_id rv3028_of_match[] = { +static const __maybe_unused struct of_device_id rv3028_of_match[] = { { .compatible = "microcrystal,rv3028", }, { } }; diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c index 62718231731b..8cb84c9595fc 100644 --- a/drivers/rtc/rtc-rv3029c2.c +++ b/drivers/rtc/rtc-rv3029c2.c @@ -265,24 +265,23 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) { struct device *dev = dev_id; struct rv3029_data *rv3029 = dev_get_drvdata(dev); - struct mutex *lock = &rv3029->rtc->ops_lock; unsigned int flags, controls; unsigned long events = 0; int ret; - mutex_lock(lock); + rtc_lock(rv3029->rtc); ret = regmap_read(rv3029->regmap, RV3029_IRQ_CTRL, &controls); if (ret) { dev_warn(dev, "Read IRQ Control Register error %d\n", ret); - mutex_unlock(lock); + rtc_unlock(rv3029->rtc); return IRQ_NONE; } ret = regmap_read(rv3029->regmap, RV3029_IRQ_FLAGS, &flags); if (ret) { dev_warn(dev, "Read IRQ Flags Register error %d\n", ret); - mutex_unlock(lock); + rtc_unlock(rv3029->rtc); return IRQ_NONE; } @@ -297,7 +296,7 @@ static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) regmap_write(rv3029->regmap, RV3029_IRQ_FLAGS, flags); regmap_write(rv3029->regmap, RV3029_IRQ_CTRL, controls); } - mutex_unlock(lock); + rtc_unlock(rv3029->rtc); return IRQ_HANDLED; } @@ -694,10 +693,13 @@ static void rv3029_hwmon_register(struct device *dev, const char *name) #endif /* CONFIG_RTC_DRV_RV3029_HWMON */ -static struct rtc_class_ops rv3029_rtc_ops = { +static const struct rtc_class_ops rv3029_rtc_ops = { .read_time = rv3029_read_time, .set_time = rv3029_set_time, .ioctl = rv3029_ioctl, + .read_alarm = rv3029_read_alarm, + .set_alarm = rv3029_set_alarm, + .alarm_irq_enable = rv3029_alarm_irq_enable, }; static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, @@ -739,23 +741,21 @@ static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, if (rc) { dev_warn(dev, "unable to request IRQ, alarms disabled\n"); rv3029->irq = 0; - } else { - rv3029_rtc_ops.read_alarm = rv3029_read_alarm; - rv3029_rtc_ops.set_alarm = rv3029_set_alarm; - rv3029_rtc_ops.alarm_irq_enable = rv3029_alarm_irq_enable; } } + if (!rv3029->irq) + clear_bit(RTC_FEATURE_ALARM, rv3029->rtc->features); rv3029->rtc->ops = &rv3029_rtc_ops; rv3029->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; rv3029->rtc->range_max = RTC_TIMESTAMP_END_2079; - rc = rtc_register_device(rv3029->rtc); + rc = devm_rtc_register_device(rv3029->rtc); if (rc) return rc; nvmem_cfg.priv = rv3029->regmap; - rtc_nvmem_register(rv3029->rtc, &nvmem_cfg); + devm_rtc_nvmem_register(rv3029->rtc, &nvmem_cfg); return 0; } @@ -808,7 +808,7 @@ static const struct i2c_device_id rv3029_id[] = { }; MODULE_DEVICE_TABLE(i2c, rv3029_id); -static const struct of_device_id rv3029_of_match[] = { +static const __maybe_unused struct of_device_id rv3029_of_match[] = { { .compatible = "microcrystal,rv3029" }, { } }; diff --git a/drivers/rtc/rtc-rv3032.c b/drivers/rtc/rtc-rv3032.c new file mode 100644 index 000000000000..d63102d5cb1e --- /dev/null +++ b/drivers/rtc/rtc-rv3032.c @@ -0,0 +1,926 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * RTC driver for the Micro Crystal RV3032 + * + * Copyright (C) 2020 Micro Crystal SA + * + * Alexandre Belloni <[email protected]> + * + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/bcd.h> +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/hwmon.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/rtc.h> + +#define RV3032_SEC 0x01 +#define RV3032_MIN 0x02 +#define RV3032_HOUR 0x03 +#define RV3032_WDAY 0x04 +#define RV3032_DAY 0x05 +#define RV3032_MONTH 0x06 +#define RV3032_YEAR 0x07 +#define RV3032_ALARM_MIN 0x08 +#define RV3032_ALARM_HOUR 0x09 +#define RV3032_ALARM_DAY 0x0A +#define RV3032_STATUS 0x0D +#define RV3032_TLSB 0x0E +#define RV3032_TMSB 0x0F +#define RV3032_CTRL1 0x10 +#define RV3032_CTRL2 0x11 +#define RV3032_CTRL3 0x12 +#define RV3032_TS_CTRL 0x13 +#define RV3032_CLK_IRQ 0x14 +#define RV3032_EEPROM_ADDR 0x3D +#define RV3032_EEPROM_DATA 0x3E +#define RV3032_EEPROM_CMD 0x3F +#define RV3032_RAM1 0x40 +#define RV3032_PMU 0xC0 +#define RV3032_OFFSET 0xC1 +#define RV3032_CLKOUT1 0xC2 +#define RV3032_CLKOUT2 0xC3 +#define RV3032_TREF0 0xC4 +#define RV3032_TREF1 0xC5 + +#define RV3032_STATUS_VLF BIT(0) +#define RV3032_STATUS_PORF BIT(1) +#define RV3032_STATUS_EVF BIT(2) +#define RV3032_STATUS_AF BIT(3) +#define RV3032_STATUS_TF BIT(4) +#define RV3032_STATUS_UF BIT(5) +#define RV3032_STATUS_TLF BIT(6) +#define RV3032_STATUS_THF BIT(7) + +#define RV3032_TLSB_CLKF BIT(1) +#define RV3032_TLSB_EEBUSY BIT(2) +#define RV3032_TLSB_TEMP GENMASK(7, 4) + +#define RV3032_CLKOUT2_HFD_MSK GENMASK(4, 0) +#define RV3032_CLKOUT2_FD_MSK GENMASK(6, 5) +#define RV3032_CLKOUT2_OS BIT(7) + +#define RV3032_CTRL1_EERD BIT(3) +#define RV3032_CTRL1_WADA BIT(5) + +#define RV3032_CTRL2_STOP BIT(0) +#define RV3032_CTRL2_EIE BIT(2) +#define RV3032_CTRL2_AIE BIT(3) +#define RV3032_CTRL2_TIE BIT(4) +#define RV3032_CTRL2_UIE BIT(5) +#define RV3032_CTRL2_CLKIE BIT(6) +#define RV3032_CTRL2_TSE BIT(7) + +#define RV3032_PMU_TCM GENMASK(1, 0) +#define RV3032_PMU_TCR GENMASK(3, 2) +#define RV3032_PMU_BSM GENMASK(5, 4) +#define RV3032_PMU_NCLKE BIT(6) + +#define RV3032_PMU_BSM_DSM 1 +#define RV3032_PMU_BSM_LSM 2 + +#define RV3032_OFFSET_MSK GENMASK(5, 0) + +#define RV3032_EVT_CTRL_TSR BIT(2) + +#define RV3032_EEPROM_CMD_UPDATE 0x11 +#define RV3032_EEPROM_CMD_WRITE 0x21 +#define RV3032_EEPROM_CMD_READ 0x22 + +#define RV3032_EEPROM_USER 0xCB + +#define RV3032_EEBUSY_POLL 10000 +#define RV3032_EEBUSY_TIMEOUT 100000 + +#define OFFSET_STEP_PPT 238419 + +struct rv3032_data { + struct regmap *regmap; + struct rtc_device *rtc; +#ifdef CONFIG_COMMON_CLK + struct clk_hw clkout_hw; +#endif +}; + +static u16 rv3032_trickle_resistors[] = {1000, 2000, 7000, 11000}; +static u16 rv3032_trickle_voltages[] = {0, 1750, 3000, 4400}; + +static int rv3032_exit_eerd(struct rv3032_data *rv3032, u32 eerd) +{ + if (eerd) + return 0; + + return regmap_update_bits(rv3032->regmap, RV3032_CTRL1, RV3032_CTRL1_EERD, 0); +} + +static int rv3032_enter_eerd(struct rv3032_data *rv3032, u32 *eerd) +{ + u32 ctrl1, status; + int ret; + + ret = regmap_read(rv3032->regmap, RV3032_CTRL1, &ctrl1); + if (ret) + return ret; + + *eerd = ctrl1 & RV3032_CTRL1_EERD; + if (*eerd) + return 0; + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL1, + RV3032_CTRL1_EERD, RV3032_CTRL1_EERD); + if (ret) + return ret; + + ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status, + !(status & RV3032_TLSB_EEBUSY), + RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + if (ret) { + rv3032_exit_eerd(rv3032, *eerd); + + return ret; + } + + return 0; +} + +static int rv3032_update_cfg(struct rv3032_data *rv3032, unsigned int reg, + unsigned int mask, unsigned int val) +{ + u32 status, eerd; + int ret; + + ret = rv3032_enter_eerd(rv3032, &eerd); + if (ret) + return ret; + + ret = regmap_update_bits(rv3032->regmap, reg, mask, val); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, RV3032_EEPROM_CMD_UPDATE); + if (ret) + goto exit_eerd; + + usleep_range(46000, RV3032_EEBUSY_TIMEOUT); + + ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status, + !(status & RV3032_TLSB_EEBUSY), + RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + +exit_eerd: + rv3032_exit_eerd(rv3032, eerd); + + return ret; +} + +static irqreturn_t rv3032_handle_irq(int irq, void *dev_id) +{ + struct rv3032_data *rv3032 = dev_id; + unsigned long events = 0; + u32 status = 0, ctrl = 0; + + if (regmap_read(rv3032->regmap, RV3032_STATUS, &status) < 0 || + status == 0) { + return IRQ_NONE; + } + + if (status & RV3032_STATUS_TF) { + status |= RV3032_STATUS_TF; + ctrl |= RV3032_CTRL2_TIE; + events |= RTC_PF; + } + + if (status & RV3032_STATUS_AF) { + status |= RV3032_STATUS_AF; + ctrl |= RV3032_CTRL2_AIE; + events |= RTC_AF; + } + + if (status & RV3032_STATUS_UF) { + status |= RV3032_STATUS_UF; + ctrl |= RV3032_CTRL2_UIE; + events |= RTC_UF; + } + + if (events) { + rtc_update_irq(rv3032->rtc, 1, events); + regmap_update_bits(rv3032->regmap, RV3032_STATUS, status, 0); + regmap_update_bits(rv3032->regmap, RV3032_CTRL2, ctrl, 0); + } + + return IRQ_HANDLED; +} + +static int rv3032_get_time(struct device *dev, struct rtc_time *tm) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + u8 date[7]; + int ret, status; + + ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status); + if (ret < 0) + return ret; + + if (status & (RV3032_STATUS_PORF | RV3032_STATUS_VLF)) + return -EINVAL; + + ret = regmap_bulk_read(rv3032->regmap, RV3032_SEC, date, sizeof(date)); + if (ret) + return ret; + + tm->tm_sec = bcd2bin(date[0] & 0x7f); + tm->tm_min = bcd2bin(date[1] & 0x7f); + tm->tm_hour = bcd2bin(date[2] & 0x3f); + tm->tm_wday = date[3] & 0x7; + tm->tm_mday = bcd2bin(date[4] & 0x3f); + tm->tm_mon = bcd2bin(date[5] & 0x1f) - 1; + tm->tm_year = bcd2bin(date[6]) + 100; + + return 0; +} + +static int rv3032_set_time(struct device *dev, struct rtc_time *tm) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + u8 date[7]; + int ret; + + date[0] = bin2bcd(tm->tm_sec); + date[1] = bin2bcd(tm->tm_min); + date[2] = bin2bcd(tm->tm_hour); + date[3] = tm->tm_wday; + date[4] = bin2bcd(tm->tm_mday); + date[5] = bin2bcd(tm->tm_mon + 1); + date[6] = bin2bcd(tm->tm_year - 100); + + ret = regmap_bulk_write(rv3032->regmap, RV3032_SEC, date, + sizeof(date)); + if (ret) + return ret; + + ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS, + RV3032_STATUS_PORF | RV3032_STATUS_VLF, 0); + + return ret; +} + +static int rv3032_get_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + u8 alarmvals[3]; + int status, ctrl, ret; + + ret = regmap_bulk_read(rv3032->regmap, RV3032_ALARM_MIN, alarmvals, + sizeof(alarmvals)); + if (ret) + return ret; + + ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status); + if (ret < 0) + return ret; + + ret = regmap_read(rv3032->regmap, RV3032_CTRL2, &ctrl); + if (ret < 0) + return ret; + + alrm->time.tm_sec = 0; + alrm->time.tm_min = bcd2bin(alarmvals[0] & 0x7f); + alrm->time.tm_hour = bcd2bin(alarmvals[1] & 0x3f); + alrm->time.tm_mday = bcd2bin(alarmvals[2] & 0x3f); + + alrm->enabled = !!(ctrl & RV3032_CTRL2_AIE); + alrm->pending = (status & RV3032_STATUS_AF) && alrm->enabled; + + return 0; +} + +static int rv3032_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + u8 alarmvals[3]; + u8 ctrl = 0; + int ret; + + /* The alarm has no seconds, round up to nearest minute */ + if (alrm->time.tm_sec) { + time64_t alarm_time = rtc_tm_to_time64(&alrm->time); + + alarm_time += 60 - alrm->time.tm_sec; + rtc_time64_to_tm(alarm_time, &alrm->time); + } + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2, + RV3032_CTRL2_AIE | RV3032_CTRL2_UIE, 0); + if (ret) + return ret; + + alarmvals[0] = bin2bcd(alrm->time.tm_min); + alarmvals[1] = bin2bcd(alrm->time.tm_hour); + alarmvals[2] = bin2bcd(alrm->time.tm_mday); + + ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS, + RV3032_STATUS_AF, 0); + if (ret) + return ret; + + ret = regmap_bulk_write(rv3032->regmap, RV3032_ALARM_MIN, alarmvals, + sizeof(alarmvals)); + if (ret) + return ret; + + if (alrm->enabled) { + if (rv3032->rtc->uie_rtctimer.enabled) + ctrl |= RV3032_CTRL2_UIE; + if (rv3032->rtc->aie_timer.enabled) + ctrl |= RV3032_CTRL2_AIE; + } + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2, + RV3032_CTRL2_UIE | RV3032_CTRL2_AIE, ctrl); + + return ret; +} + +static int rv3032_alarm_irq_enable(struct device *dev, unsigned int enabled) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + int ctrl = 0, ret; + + if (enabled) { + if (rv3032->rtc->uie_rtctimer.enabled) + ctrl |= RV3032_CTRL2_UIE; + if (rv3032->rtc->aie_timer.enabled) + ctrl |= RV3032_CTRL2_AIE; + } + + ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS, + RV3032_STATUS_AF | RV3032_STATUS_UF, 0); + if (ret) + return ret; + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2, + RV3032_CTRL2_UIE | RV3032_CTRL2_AIE, ctrl); + if (ret) + return ret; + + return 0; +} + +static int rv3032_read_offset(struct device *dev, long *offset) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + int ret, value, steps; + + ret = regmap_read(rv3032->regmap, RV3032_OFFSET, &value); + if (ret < 0) + return ret; + + steps = sign_extend32(FIELD_GET(RV3032_OFFSET_MSK, value), 5); + + *offset = DIV_ROUND_CLOSEST(steps * OFFSET_STEP_PPT, 1000); + + return 0; +} + +static int rv3032_set_offset(struct device *dev, long offset) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + + offset = clamp(offset, -7629L, 7391L) * 1000; + offset = DIV_ROUND_CLOSEST(offset, OFFSET_STEP_PPT); + + return rv3032_update_cfg(rv3032, RV3032_OFFSET, RV3032_OFFSET_MSK, + FIELD_PREP(RV3032_OFFSET_MSK, offset)); +} + +static int rv3032_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + int status, val = 0, ret = 0; + + switch (cmd) { + case RTC_VL_READ: + ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status); + if (ret < 0) + return ret; + + if (status & (RV3032_STATUS_PORF | RV3032_STATUS_VLF)) + val = RTC_VL_DATA_INVALID; + return put_user(val, (unsigned int __user *)arg); + + default: + return -ENOIOCTLCMD; + } +} + +static int rv3032_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) +{ + return regmap_bulk_write(priv, RV3032_RAM1 + offset, val, bytes); +} + +static int rv3032_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) +{ + return regmap_bulk_read(priv, RV3032_RAM1 + offset, val, bytes); +} + +static int rv3032_eeprom_write(void *priv, unsigned int offset, void *val, size_t bytes) +{ + struct rv3032_data *rv3032 = priv; + u32 status, eerd; + int i, ret; + u8 *buf = val; + + ret = rv3032_enter_eerd(rv3032, &eerd); + if (ret) + return ret; + + for (i = 0; i < bytes; i++) { + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_ADDR, + RV3032_EEPROM_USER + offset + i); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_DATA, buf[i]); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, + RV3032_EEPROM_CMD_WRITE); + if (ret) + goto exit_eerd; + + usleep_range(RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + + ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status, + !(status & RV3032_TLSB_EEBUSY), + RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + if (ret) + goto exit_eerd; + } + +exit_eerd: + rv3032_exit_eerd(rv3032, eerd); + + return ret; +} + +static int rv3032_eeprom_read(void *priv, unsigned int offset, void *val, size_t bytes) +{ + struct rv3032_data *rv3032 = priv; + u32 status, eerd, data; + int i, ret; + u8 *buf = val; + + ret = rv3032_enter_eerd(rv3032, &eerd); + if (ret) + return ret; + + for (i = 0; i < bytes; i++) { + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_ADDR, + RV3032_EEPROM_USER + offset + i); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, + RV3032_EEPROM_CMD_READ); + if (ret) + goto exit_eerd; + + ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status, + !(status & RV3032_TLSB_EEBUSY), + RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + if (ret) + goto exit_eerd; + + ret = regmap_read(rv3032->regmap, RV3032_EEPROM_DATA, &data); + if (ret) + goto exit_eerd; + buf[i] = data; + } + +exit_eerd: + rv3032_exit_eerd(rv3032, eerd); + + return ret; +} + +static int rv3032_trickle_charger_setup(struct device *dev, struct rv3032_data *rv3032) +{ + u32 val, ohms, voltage; + int i; + + val = FIELD_PREP(RV3032_PMU_TCM, 1) | FIELD_PREP(RV3032_PMU_BSM, RV3032_PMU_BSM_DSM); + if (!device_property_read_u32(dev, "trickle-voltage-millivolt", &voltage)) { + for (i = 0; i < ARRAY_SIZE(rv3032_trickle_voltages); i++) + if (voltage == rv3032_trickle_voltages[i]) + break; + if (i < ARRAY_SIZE(rv3032_trickle_voltages)) + val = FIELD_PREP(RV3032_PMU_TCM, i) | + FIELD_PREP(RV3032_PMU_BSM, RV3032_PMU_BSM_LSM); + } + + if (device_property_read_u32(dev, "trickle-resistor-ohms", &ohms)) + return 0; + + for (i = 0; i < ARRAY_SIZE(rv3032_trickle_resistors); i++) + if (ohms == rv3032_trickle_resistors[i]) + break; + + if (i >= ARRAY_SIZE(rv3032_trickle_resistors)) { + dev_warn(dev, "invalid trickle resistor value\n"); + + return 0; + } + + return rv3032_update_cfg(rv3032, RV3032_PMU, + RV3032_PMU_TCR | RV3032_PMU_TCM | RV3032_PMU_BSM, + val | FIELD_PREP(RV3032_PMU_TCR, i)); +} + +#ifdef CONFIG_COMMON_CLK +#define clkout_hw_to_rv3032(hw) container_of(hw, struct rv3032_data, clkout_hw) + +static int clkout_xtal_rates[] = { + 32768, + 1024, + 64, + 1, +}; + +#define RV3032_HFD_STEP 8192 + +static unsigned long rv3032_clkout_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + int clkout, ret; + struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw); + + ret = regmap_read(rv3032->regmap, RV3032_CLKOUT2, &clkout); + if (ret < 0) + return 0; + + if (clkout & RV3032_CLKOUT2_OS) { + unsigned long rate = FIELD_GET(RV3032_CLKOUT2_HFD_MSK, clkout) << 8; + + ret = regmap_read(rv3032->regmap, RV3032_CLKOUT1, &clkout); + if (ret < 0) + return 0; + + rate += clkout + 1; + + return rate * RV3032_HFD_STEP; + } + + return clkout_xtal_rates[FIELD_GET(RV3032_CLKOUT2_FD_MSK, clkout)]; +} + +static long rv3032_clkout_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + int i, hfd; + + if (rate < RV3032_HFD_STEP) + for (i = 0; i < ARRAY_SIZE(clkout_xtal_rates); i++) + if (clkout_xtal_rates[i] <= rate) + return clkout_xtal_rates[i]; + + hfd = DIV_ROUND_CLOSEST(rate, RV3032_HFD_STEP); + + return RV3032_HFD_STEP * clamp(hfd, 0, 8192); +} + +static int rv3032_clkout_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw); + u32 status, eerd; + int i, hfd, ret; + + for (i = 0; i < ARRAY_SIZE(clkout_xtal_rates); i++) { + if (clkout_xtal_rates[i] == rate) { + return rv3032_update_cfg(rv3032, RV3032_CLKOUT2, 0xff, + FIELD_PREP(RV3032_CLKOUT2_FD_MSK, i)); + } + } + + hfd = DIV_ROUND_CLOSEST(rate, RV3032_HFD_STEP); + hfd = clamp(hfd, 1, 8192) - 1; + + ret = rv3032_enter_eerd(rv3032, &eerd); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_CLKOUT1, hfd & 0xff); + if (ret) + return ret; + + ret = regmap_write(rv3032->regmap, RV3032_CLKOUT2, RV3032_CLKOUT2_OS | + FIELD_PREP(RV3032_CLKOUT2_HFD_MSK, hfd >> 8)); + if (ret) + goto exit_eerd; + + ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, RV3032_EEPROM_CMD_UPDATE); + if (ret) + goto exit_eerd; + + usleep_range(46000, RV3032_EEBUSY_TIMEOUT); + + ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status, + !(status & RV3032_TLSB_EEBUSY), + RV3032_EEBUSY_POLL, RV3032_EEBUSY_TIMEOUT); + +exit_eerd: + rv3032_exit_eerd(rv3032, eerd); + + return ret; +} + +static int rv3032_clkout_prepare(struct clk_hw *hw) +{ + struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw); + + return rv3032_update_cfg(rv3032, RV3032_PMU, RV3032_PMU_NCLKE, 0); +} + +static void rv3032_clkout_unprepare(struct clk_hw *hw) +{ + struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw); + + rv3032_update_cfg(rv3032, RV3032_PMU, RV3032_PMU_NCLKE, RV3032_PMU_NCLKE); +} + +static int rv3032_clkout_is_prepared(struct clk_hw *hw) +{ + int val, ret; + struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw); + + ret = regmap_read(rv3032->regmap, RV3032_PMU, &val); + if (ret < 0) + return ret; + + return !(val & RV3032_PMU_NCLKE); +} + +static const struct clk_ops rv3032_clkout_ops = { + .prepare = rv3032_clkout_prepare, + .unprepare = rv3032_clkout_unprepare, + .is_prepared = rv3032_clkout_is_prepared, + .recalc_rate = rv3032_clkout_recalc_rate, + .round_rate = rv3032_clkout_round_rate, + .set_rate = rv3032_clkout_set_rate, +}; + +static int rv3032_clkout_register_clk(struct rv3032_data *rv3032, + struct i2c_client *client) +{ + int ret; + struct clk *clk; + struct clk_init_data init; + struct device_node *node = client->dev.of_node; + + ret = regmap_update_bits(rv3032->regmap, RV3032_TLSB, RV3032_TLSB_CLKF, 0); + if (ret < 0) + return ret; + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2, RV3032_CTRL2_CLKIE, 0); + if (ret < 0) + return ret; + + ret = regmap_write(rv3032->regmap, RV3032_CLK_IRQ, 0); + if (ret < 0) + return ret; + + init.name = "rv3032-clkout"; + init.ops = &rv3032_clkout_ops; + init.flags = 0; + init.parent_names = NULL; + init.num_parents = 0; + rv3032->clkout_hw.init = &init; + + of_property_read_string(node, "clock-output-names", &init.name); + + clk = devm_clk_register(&client->dev, &rv3032->clkout_hw); + if (!IS_ERR(clk)) + of_clk_add_provider(node, of_clk_src_simple_get, clk); + + return 0; +} +#endif + +static int rv3032_hwmon_read_temp(struct device *dev, long *mC) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + u8 buf[2]; + int temp, prev = 0; + int ret; + + ret = regmap_bulk_read(rv3032->regmap, RV3032_TLSB, buf, sizeof(buf)); + if (ret) + return ret; + + temp = sign_extend32(buf[1], 7) << 4; + temp |= FIELD_GET(RV3032_TLSB_TEMP, buf[0]); + + /* No blocking or shadowing on RV3032_TLSB and RV3032_TMSB */ + do { + prev = temp; + + ret = regmap_bulk_read(rv3032->regmap, RV3032_TLSB, buf, sizeof(buf)); + if (ret) + return ret; + + temp = sign_extend32(buf[1], 7) << 4; + temp |= FIELD_GET(RV3032_TLSB_TEMP, buf[0]); + } while (temp != prev); + + *mC = (temp * 1000) / 16; + + return 0; +} + +static umode_t rv3032_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + if (type != hwmon_temp) + return 0; + + switch (attr) { + case hwmon_temp_input: + return 0444; + default: + return 0; + } +} + +static int rv3032_hwmon_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *temp) +{ + int err; + + switch (attr) { + case hwmon_temp_input: + err = rv3032_hwmon_read_temp(dev, temp); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static const struct hwmon_channel_info *rv3032_hwmon_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST), + NULL +}; + +static const struct hwmon_ops rv3032_hwmon_hwmon_ops = { + .is_visible = rv3032_hwmon_is_visible, + .read = rv3032_hwmon_read, +}; + +static const struct hwmon_chip_info rv3032_hwmon_chip_info = { + .ops = &rv3032_hwmon_hwmon_ops, + .info = rv3032_hwmon_info, +}; + +static void rv3032_hwmon_register(struct device *dev) +{ + struct rv3032_data *rv3032 = dev_get_drvdata(dev); + + if (!IS_REACHABLE(CONFIG_HWMON)) + return; + + devm_hwmon_device_register_with_info(dev, "rv3032", rv3032, &rv3032_hwmon_chip_info, NULL); +} + +static const struct rtc_class_ops rv3032_rtc_ops = { + .read_time = rv3032_get_time, + .set_time = rv3032_set_time, + .read_offset = rv3032_read_offset, + .set_offset = rv3032_set_offset, + .ioctl = rv3032_ioctl, + .read_alarm = rv3032_get_alarm, + .set_alarm = rv3032_set_alarm, + .alarm_irq_enable = rv3032_alarm_irq_enable, +}; + +static const struct regmap_config regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xCA, +}; + +static int rv3032_probe(struct i2c_client *client) +{ + struct rv3032_data *rv3032; + int ret, status; + struct nvmem_config nvmem_cfg = { + .name = "rv3032_nvram", + .word_size = 1, + .stride = 1, + .size = 16, + .type = NVMEM_TYPE_BATTERY_BACKED, + .reg_read = rv3032_nvram_read, + .reg_write = rv3032_nvram_write, + }; + struct nvmem_config eeprom_cfg = { + .name = "rv3032_eeprom", + .word_size = 1, + .stride = 1, + .size = 32, + .type = NVMEM_TYPE_EEPROM, + .reg_read = rv3032_eeprom_read, + .reg_write = rv3032_eeprom_write, + }; + + rv3032 = devm_kzalloc(&client->dev, sizeof(struct rv3032_data), + GFP_KERNEL); + if (!rv3032) + return -ENOMEM; + + rv3032->regmap = devm_regmap_init_i2c(client, ®map_config); + if (IS_ERR(rv3032->regmap)) + return PTR_ERR(rv3032->regmap); + + i2c_set_clientdata(client, rv3032); + + ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status); + if (ret < 0) + return ret; + + rv3032->rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(rv3032->rtc)) + return PTR_ERR(rv3032->rtc); + + if (client->irq > 0) { + ret = devm_request_threaded_irq(&client->dev, client->irq, + NULL, rv3032_handle_irq, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "rv3032", rv3032); + if (ret) { + dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); + client->irq = 0; + } + } + if (!client->irq) + clear_bit(RTC_FEATURE_ALARM, rv3032->rtc->features); + + ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL1, + RV3032_CTRL1_WADA, RV3032_CTRL1_WADA); + if (ret) + return ret; + + rv3032_trickle_charger_setup(&client->dev, rv3032); + + rv3032->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rv3032->rtc->range_max = RTC_TIMESTAMP_END_2099; + rv3032->rtc->ops = &rv3032_rtc_ops; + ret = devm_rtc_register_device(rv3032->rtc); + if (ret) + return ret; + + nvmem_cfg.priv = rv3032->regmap; + devm_rtc_nvmem_register(rv3032->rtc, &nvmem_cfg); + eeprom_cfg.priv = rv3032; + devm_rtc_nvmem_register(rv3032->rtc, &eeprom_cfg); + + rv3032->rtc->max_user_freq = 1; + +#ifdef CONFIG_COMMON_CLK + rv3032_clkout_register_clk(rv3032, client); +#endif + + rv3032_hwmon_register(&client->dev); + + return 0; +} + +static const __maybe_unused struct of_device_id rv3032_of_match[] = { + { .compatible = "microcrystal,rv3032", }, + { } +}; +MODULE_DEVICE_TABLE(of, rv3032_of_match); + +static struct i2c_driver rv3032_driver = { + .driver = { + .name = "rtc-rv3032", + .of_match_table = of_match_ptr(rv3032_of_match), + }, + .probe_new = rv3032_probe, +}; +module_i2c_driver(rv3032_driver); + +MODULE_AUTHOR("Alexandre Belloni <[email protected]>"); +MODULE_DESCRIPTION("Micro Crystal RV3032 RTC driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c index 93c3a6b627bd..72adef5a5ebe 100644 --- a/drivers/rtc/rtc-rv8803.c +++ b/drivers/rtc/rtc-rv8803.c @@ -454,13 +454,7 @@ static int rv8803_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) static int rv8803_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) { - int ret; - - ret = rv8803_write_reg(priv, RV8803_RAM, *(u8 *)val); - if (ret) - return ret; - - return 0; + return rv8803_write_reg(priv, RV8803_RAM, *(u8 *)val); } static int rv8803_nvram_read(void *priv, unsigned int offset, @@ -477,10 +471,13 @@ static int rv8803_nvram_read(void *priv, unsigned int offset, return 0; } -static struct rtc_class_ops rv8803_rtc_ops = { +static const struct rtc_class_ops rv8803_rtc_ops = { .read_time = rv8803_get_time, .set_time = rv8803_set_time, .ioctl = rv8803_ioctl, + .read_alarm = rv8803_get_alarm, + .set_alarm = rv8803_set_alarm, + .alarm_irq_enable = rv8803_alarm_irq_enable, }; static int rx8900_trickle_charger_init(struct rv8803_data *rv8803) @@ -573,12 +570,10 @@ static int rv8803_probe(struct i2c_client *client, if (err) { dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); client->irq = 0; - } else { - rv8803_rtc_ops.read_alarm = rv8803_get_alarm; - rv8803_rtc_ops.set_alarm = rv8803_set_alarm; - rv8803_rtc_ops.alarm_irq_enable = rv8803_alarm_irq_enable; } } + if (!client->irq) + clear_bit(RTC_FEATURE_ALARM, rv8803->rtc->features); err = rv8803_write_reg(rv8803->client, RV8803_EXT, RV8803_EXT_WADA); if (err) @@ -591,14 +586,13 @@ static int rv8803_probe(struct i2c_client *client, } rv8803->rtc->ops = &rv8803_rtc_ops; - rv8803->rtc->nvram_old_abi = true; rv8803->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; rv8803->rtc->range_max = RTC_TIMESTAMP_END_2099; - err = rtc_register_device(rv8803->rtc); + err = devm_rtc_register_device(rv8803->rtc); if (err) return err; - rtc_nvmem_register(rv8803->rtc, &nvmem_cfg); + devm_rtc_nvmem_register(rv8803->rtc, &nvmem_cfg); rv8803->rtc->max_user_freq = 1; @@ -613,7 +607,7 @@ static const struct i2c_device_id rv8803_id[] = { }; MODULE_DEVICE_TABLE(i2c, rv8803_id); -static const struct of_device_id rv8803_of_match[] = { +static const __maybe_unused struct of_device_id rv8803_of_match[] = { { .compatible = "microcrystal,rv8803", .data = (void *)rv_8803 diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c index 3a9eb7043f01..79161d4c6ce4 100644 --- a/drivers/rtc/rtc-rx6110.c +++ b/drivers/rtc/rtc-rx6110.c @@ -16,6 +16,7 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/spi/spi.h> +#include <linux/i2c.h> /* RX-6110 Register definitions */ #define RX6110_REG_SEC 0x10 @@ -310,6 +311,27 @@ static const struct rtc_class_ops rx6110_rtc_ops = { .set_time = rx6110_set_time, }; +static int rx6110_probe(struct rx6110_data *rx6110, struct device *dev) +{ + int err; + + rx6110->rtc = devm_rtc_device_register(dev, + RX6110_DRIVER_NAME, + &rx6110_rtc_ops, THIS_MODULE); + + if (IS_ERR(rx6110->rtc)) + return PTR_ERR(rx6110->rtc); + + err = rx6110_init(rx6110); + if (err) + return err; + + rx6110->rtc->max_user_freq = 1; + + return 0; +} + +#if IS_ENABLED(CONFIG_SPI_MASTER) static struct regmap_config regmap_spi_config = { .reg_bits = 8, .val_bits = 8, @@ -318,13 +340,12 @@ static struct regmap_config regmap_spi_config = { }; /** - * rx6110_probe - initialize rtc driver + * rx6110_spi_probe - initialize rtc driver * @spi: pointer to spi device */ -static int rx6110_probe(struct spi_device *spi) +static int rx6110_spi_probe(struct spi_device *spi) { struct rx6110_data *rx6110; - int err; if ((spi->bits_per_word && spi->bits_per_word != 8) || (spi->max_speed_hz > 2000000) || @@ -346,27 +367,14 @@ static int rx6110_probe(struct spi_device *spi) spi_set_drvdata(spi, rx6110); - rx6110->rtc = devm_rtc_device_register(&spi->dev, - RX6110_DRIVER_NAME, - &rx6110_rtc_ops, THIS_MODULE); - - if (IS_ERR(rx6110->rtc)) - return PTR_ERR(rx6110->rtc); - - err = rx6110_init(rx6110); - if (err) - return err; - - rx6110->rtc->max_user_freq = 1; - - return 0; + return rx6110_probe(rx6110, &spi->dev); } -static const struct spi_device_id rx6110_id[] = { +static const struct spi_device_id rx6110_spi_id[] = { { "rx6110", 0 }, { } }; -MODULE_DEVICE_TABLE(spi, rx6110_id); +MODULE_DEVICE_TABLE(spi, rx6110_spi_id); static const struct of_device_id rx6110_spi_of_match[] = { { .compatible = "epson,rx6110" }, @@ -374,16 +382,127 @@ static const struct of_device_id rx6110_spi_of_match[] = { }; MODULE_DEVICE_TABLE(of, rx6110_spi_of_match); -static struct spi_driver rx6110_driver = { +static struct spi_driver rx6110_spi_driver = { .driver = { .name = RX6110_DRIVER_NAME, .of_match_table = of_match_ptr(rx6110_spi_of_match), }, - .probe = rx6110_probe, - .id_table = rx6110_id, + .probe = rx6110_spi_probe, + .id_table = rx6110_spi_id, +}; + +static int rx6110_spi_register(void) +{ + return spi_register_driver(&rx6110_spi_driver); +} + +static void rx6110_spi_unregister(void) +{ + spi_unregister_driver(&rx6110_spi_driver); +} +#else +static int rx6110_spi_register(void) +{ + return 0; +} + +static void rx6110_spi_unregister(void) +{ +} +#endif /* CONFIG_SPI_MASTER */ + +#if IS_ENABLED(CONFIG_I2C) +static struct regmap_config regmap_i2c_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RX6110_REG_IRQ, + .read_flag_mask = 0x80, }; -module_spi_driver(rx6110_driver); +static int rx6110_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct rx6110_data *rx6110; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA + | I2C_FUNC_SMBUS_I2C_BLOCK)) { + dev_err(&adapter->dev, + "doesn't support required functionality\n"); + return -EIO; + } + + rx6110 = devm_kzalloc(&client->dev, sizeof(*rx6110), GFP_KERNEL); + if (!rx6110) + return -ENOMEM; + + rx6110->regmap = devm_regmap_init_i2c(client, ®map_i2c_config); + if (IS_ERR(rx6110->regmap)) { + dev_err(&client->dev, "regmap init failed for rtc rx6110\n"); + return PTR_ERR(rx6110->regmap); + } + + i2c_set_clientdata(client, rx6110); + + return rx6110_probe(rx6110, &client->dev); +} + +static const struct i2c_device_id rx6110_i2c_id[] = { + { "rx6110", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, rx6110_i2c_id); + +static struct i2c_driver rx6110_i2c_driver = { + .driver = { + .name = RX6110_DRIVER_NAME, + }, + .probe = rx6110_i2c_probe, + .id_table = rx6110_i2c_id, +}; + +static int rx6110_i2c_register(void) +{ + return i2c_add_driver(&rx6110_i2c_driver); +} + +static void rx6110_i2c_unregister(void) +{ + i2c_del_driver(&rx6110_i2c_driver); +} +#else +static int rx6110_i2c_register(void) +{ + return 0; +} + +static void rx6110_i2c_unregister(void) +{ +} +#endif /* CONFIG_I2C */ + +static int __init rx6110_module_init(void) +{ + int ret; + + ret = rx6110_spi_register(); + if (ret) + return ret; + + ret = rx6110_i2c_register(); + if (ret) + rx6110_spi_unregister(); + + return ret; +} +module_init(rx6110_module_init); + +static void __exit rx6110_module_exit(void) +{ + rx6110_spi_unregister(); + rx6110_i2c_unregister(); +} +module_exit(rx6110_module_exit); MODULE_AUTHOR("Val Krutov <[email protected]>"); MODULE_DESCRIPTION("RX-6110 SA RTC driver"); diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c index fe010151ec8f..d09056570739 100644 --- a/drivers/rtc/rtc-rx8010.c +++ b/drivers/rtc/rtc-rx8010.c @@ -11,42 +11,43 @@ #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/regmap.h> #include <linux/rtc.h> -#define RX8010_SEC 0x10 -#define RX8010_MIN 0x11 -#define RX8010_HOUR 0x12 -#define RX8010_WDAY 0x13 -#define RX8010_MDAY 0x14 -#define RX8010_MONTH 0x15 -#define RX8010_YEAR 0x16 -#define RX8010_RESV17 0x17 -#define RX8010_ALMIN 0x18 -#define RX8010_ALHOUR 0x19 -#define RX8010_ALWDAY 0x1A -#define RX8010_TCOUNT0 0x1B -#define RX8010_TCOUNT1 0x1C -#define RX8010_EXT 0x1D -#define RX8010_FLAG 0x1E -#define RX8010_CTRL 0x1F +#define RX8010_SEC 0x10 +#define RX8010_MIN 0x11 +#define RX8010_HOUR 0x12 +#define RX8010_WDAY 0x13 +#define RX8010_MDAY 0x14 +#define RX8010_MONTH 0x15 +#define RX8010_YEAR 0x16 +#define RX8010_RESV17 0x17 +#define RX8010_ALMIN 0x18 +#define RX8010_ALHOUR 0x19 +#define RX8010_ALWDAY 0x1A +#define RX8010_TCOUNT0 0x1B +#define RX8010_TCOUNT1 0x1C +#define RX8010_EXT 0x1D +#define RX8010_FLAG 0x1E +#define RX8010_CTRL 0x1F /* 0x20 to 0x2F are user registers */ -#define RX8010_RESV30 0x30 -#define RX8010_RESV31 0x31 -#define RX8010_IRQ 0x32 +#define RX8010_RESV30 0x30 +#define RX8010_RESV31 0x31 +#define RX8010_IRQ 0x32 -#define RX8010_EXT_WADA BIT(3) +#define RX8010_EXT_WADA BIT(3) -#define RX8010_FLAG_VLF BIT(1) -#define RX8010_FLAG_AF BIT(3) -#define RX8010_FLAG_TF BIT(4) -#define RX8010_FLAG_UF BIT(5) +#define RX8010_FLAG_VLF BIT(1) +#define RX8010_FLAG_AF BIT(3) +#define RX8010_FLAG_TF BIT(4) +#define RX8010_FLAG_UF BIT(5) -#define RX8010_CTRL_AIE BIT(3) -#define RX8010_CTRL_UIE BIT(5) -#define RX8010_CTRL_STOP BIT(6) -#define RX8010_CTRL_TEST BIT(7) +#define RX8010_CTRL_AIE BIT(3) +#define RX8010_CTRL_UIE BIT(5) +#define RX8010_CTRL_STOP BIT(6) +#define RX8010_CTRL_TEST BIT(7) -#define RX8010_ALARM_AE BIT(7) +#define RX8010_ALARM_AE BIT(7) static const struct i2c_device_id rx8010_id[] = { { "rx8010", 0 }, @@ -54,14 +55,14 @@ static const struct i2c_device_id rx8010_id[] = { }; MODULE_DEVICE_TABLE(i2c, rx8010_id); -static const struct of_device_id rx8010_of_match[] = { +static const __maybe_unused struct of_device_id rx8010_of_match[] = { { .compatible = "epson,rx8010" }, { } }; MODULE_DEVICE_TABLE(of, rx8010_of_match); struct rx8010_data { - struct i2c_client *client; + struct regmap *regs; struct rtc_device *rtc; u8 ctrlreg; }; @@ -70,14 +71,13 @@ static irqreturn_t rx8010_irq_1_handler(int irq, void *dev_id) { struct i2c_client *client = dev_id; struct rx8010_data *rx8010 = i2c_get_clientdata(client); - int flagreg; + int flagreg, err; - mutex_lock(&rx8010->rtc->ops_lock); + rtc_lock(rx8010->rtc); - flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG); - - if (flagreg <= 0) { - mutex_unlock(&rx8010->rtc->ops_lock); + err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg); + if (err) { + rtc_unlock(rx8010->rtc); return IRQ_NONE; } @@ -99,32 +99,29 @@ static irqreturn_t rx8010_irq_1_handler(int irq, void *dev_id) rtc_update_irq(rx8010->rtc, 1, RTC_UF | RTC_IRQF); } - i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg); - - mutex_unlock(&rx8010->rtc->ops_lock); - return IRQ_HANDLED; + err = regmap_write(rx8010->regs, RX8010_FLAG, flagreg); + rtc_unlock(rx8010->rtc); + return err ? IRQ_NONE : IRQ_HANDLED; } static int rx8010_get_time(struct device *dev, struct rtc_time *dt) { struct rx8010_data *rx8010 = dev_get_drvdata(dev); - u8 date[7]; - int flagreg; - int err; + u8 date[RX8010_YEAR - RX8010_SEC + 1]; + int flagreg, err; - flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG); - if (flagreg < 0) - return flagreg; + err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg); + if (err) + return err; if (flagreg & RX8010_FLAG_VLF) { dev_warn(dev, "Frequency stop detected\n"); return -EINVAL; } - err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_SEC, - 7, date); - if (err != 7) - return err < 0 ? err : -EIO; + err = regmap_bulk_read(rx8010->regs, RX8010_SEC, date, sizeof(date)); + if (err) + return err; dt->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f); dt->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f); @@ -140,22 +137,13 @@ static int rx8010_get_time(struct device *dev, struct rtc_time *dt) static int rx8010_set_time(struct device *dev, struct rtc_time *dt) { struct rx8010_data *rx8010 = dev_get_drvdata(dev); - u8 date[7]; - int ctrl, flagreg; - int ret; - - if ((dt->tm_year < 100) || (dt->tm_year > 199)) - return -EINVAL; + u8 date[RX8010_YEAR - RX8010_SEC + 1]; + int err; /* set STOP bit before changing clock/calendar */ - ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL); - if (ctrl < 0) - return ctrl; - rx8010->ctrlreg = ctrl | RX8010_CTRL_STOP; - ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL, - rx8010->ctrlreg); - if (ret < 0) - return ret; + err = regmap_set_bits(rx8010->regs, RX8010_CTRL, RX8010_CTRL_STOP); + if (err) + return err; date[RX8010_SEC - RX8010_SEC] = bin2bcd(dt->tm_sec); date[RX8010_MIN - RX8010_SEC] = bin2bcd(dt->tm_min); @@ -165,66 +153,54 @@ static int rx8010_set_time(struct device *dev, struct rtc_time *dt) date[RX8010_YEAR - RX8010_SEC] = bin2bcd(dt->tm_year - 100); date[RX8010_WDAY - RX8010_SEC] = bin2bcd(1 << dt->tm_wday); - ret = i2c_smbus_write_i2c_block_data(rx8010->client, - RX8010_SEC, 7, date); - if (ret < 0) - return ret; + err = regmap_bulk_write(rx8010->regs, RX8010_SEC, date, sizeof(date)); + if (err) + return err; /* clear STOP bit after changing clock/calendar */ - ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL); - if (ctrl < 0) - return ctrl; - rx8010->ctrlreg = ctrl & ~RX8010_CTRL_STOP; - ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL, - rx8010->ctrlreg); - if (ret < 0) - return ret; - - flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG); - if (flagreg < 0) { - return flagreg; - } + err = regmap_clear_bits(rx8010->regs, RX8010_CTRL, RX8010_CTRL_STOP); + if (err) + return err; - if (flagreg & RX8010_FLAG_VLF) - ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, - flagreg & ~RX8010_FLAG_VLF); + err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_VLF); + if (err) + return err; return 0; } -static int rx8010_init_client(struct i2c_client *client) +static int rx8010_init(struct device *dev) { - struct rx8010_data *rx8010 = i2c_get_clientdata(client); + struct rx8010_data *rx8010 = dev_get_drvdata(dev); u8 ctrl[2]; - int need_clear = 0, err = 0; + int need_clear = 0, err; /* Initialize reserved registers as specified in datasheet */ - err = i2c_smbus_write_byte_data(client, RX8010_RESV17, 0xD8); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_RESV17, 0xD8); + if (err) return err; - err = i2c_smbus_write_byte_data(client, RX8010_RESV30, 0x00); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_RESV30, 0x00); + if (err) return err; - err = i2c_smbus_write_byte_data(client, RX8010_RESV31, 0x08); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_RESV31, 0x08); + if (err) return err; - err = i2c_smbus_write_byte_data(client, RX8010_IRQ, 0x00); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_IRQ, 0x00); + if (err) return err; - err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_FLAG, - 2, ctrl); - if (err != 2) - return err < 0 ? err : -EIO; + err = regmap_bulk_read(rx8010->regs, RX8010_FLAG, ctrl, 2); + if (err) + return err; if (ctrl[0] & RX8010_FLAG_VLF) - dev_warn(&client->dev, "Frequency stop was detected\n"); + dev_warn(dev, "Frequency stop was detected\n"); if (ctrl[0] & RX8010_FLAG_AF) { - dev_warn(&client->dev, "Alarm was detected\n"); + dev_warn(dev, "Alarm was detected\n"); need_clear = 1; } @@ -236,8 +212,8 @@ static int rx8010_init_client(struct i2c_client *client) if (need_clear) { ctrl[0] &= ~(RX8010_FLAG_AF | RX8010_FLAG_TF | RX8010_FLAG_UF); - err = i2c_smbus_write_byte_data(client, RX8010_FLAG, ctrl[0]); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_FLAG, ctrl[0]); + if (err) return err; } @@ -249,18 +225,16 @@ static int rx8010_init_client(struct i2c_client *client) static int rx8010_read_alarm(struct device *dev, struct rtc_wkalrm *t) { struct rx8010_data *rx8010 = dev_get_drvdata(dev); - struct i2c_client *client = rx8010->client; u8 alarmvals[3]; - int flagreg; - int err; + int flagreg, err; - err = i2c_smbus_read_i2c_block_data(client, RX8010_ALMIN, 3, alarmvals); - if (err != 3) - return err < 0 ? err : -EIO; + err = regmap_bulk_read(rx8010->regs, RX8010_ALMIN, alarmvals, 3); + if (err) + return err; - flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG); - if (flagreg < 0) - return flagreg; + err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg); + if (err) + return err; t->time.tm_sec = 0; t->time.tm_min = bcd2bin(alarmvals[0] & 0x7f); @@ -277,55 +251,38 @@ static int rx8010_read_alarm(struct device *dev, struct rtc_wkalrm *t) static int rx8010_set_alarm(struct device *dev, struct rtc_wkalrm *t) { - struct i2c_client *client = to_i2c_client(dev); struct rx8010_data *rx8010 = dev_get_drvdata(dev); u8 alarmvals[3]; - int extreg, flagreg; int err; - flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG); - if (flagreg < 0) { - return flagreg; - } - if (rx8010->ctrlreg & (RX8010_CTRL_AIE | RX8010_CTRL_UIE)) { rx8010->ctrlreg &= ~(RX8010_CTRL_AIE | RX8010_CTRL_UIE); - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL, - rx8010->ctrlreg); - if (err < 0) { + err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg); + if (err) return err; - } } - flagreg &= ~RX8010_FLAG_AF; - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg); - if (err < 0) + err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_AF); + if (err) return err; alarmvals[0] = bin2bcd(t->time.tm_min); alarmvals[1] = bin2bcd(t->time.tm_hour); alarmvals[2] = bin2bcd(t->time.tm_mday); - err = i2c_smbus_write_i2c_block_data(rx8010->client, RX8010_ALMIN, - 2, alarmvals); - if (err < 0) + err = regmap_bulk_write(rx8010->regs, RX8010_ALMIN, alarmvals, 2); + if (err) return err; - extreg = i2c_smbus_read_byte_data(client, RX8010_EXT); - if (extreg < 0) - return extreg; - - extreg |= RX8010_EXT_WADA; - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_EXT, extreg); - if (err < 0) + err = regmap_clear_bits(rx8010->regs, RX8010_EXT, RX8010_EXT_WADA); + if (err) return err; if (alarmvals[2] == 0) alarmvals[2] |= RX8010_ALARM_AE; - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_ALWDAY, - alarmvals[2]); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_ALWDAY, alarmvals[2]); + if (err) return err; if (t->enabled) { @@ -335,9 +292,8 @@ static int rx8010_set_alarm(struct device *dev, struct rtc_wkalrm *t) rx8010->ctrlreg |= (RX8010_CTRL_AIE | RX8010_CTRL_UIE); - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL, - rx8010->ctrlreg); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg); + if (err) return err; } @@ -347,11 +303,9 @@ static int rx8010_set_alarm(struct device *dev, struct rtc_wkalrm *t) static int rx8010_alarm_irq_enable(struct device *dev, unsigned int enabled) { - struct i2c_client *client = to_i2c_client(dev); struct rx8010_data *rx8010 = dev_get_drvdata(dev); - int flagreg; - u8 ctrl; int err; + u8 ctrl; ctrl = rx8010->ctrlreg; @@ -367,20 +321,14 @@ static int rx8010_alarm_irq_enable(struct device *dev, ctrl &= ~RX8010_CTRL_AIE; } - flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG); - if (flagreg < 0) - return flagreg; - - flagreg &= ~RX8010_FLAG_AF; - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg); - if (err < 0) + err = regmap_clear_bits(rx8010->regs, RX8010_FLAG, RX8010_FLAG_AF); + if (err) return err; if (ctrl != rx8010->ctrlreg) { rx8010->ctrlreg = ctrl; - err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL, - rx8010->ctrlreg); - if (err < 0) + err = regmap_write(rx8010->regs, RX8010_CTRL, rx8010->ctrlreg); + if (err) return err; } @@ -390,14 +338,13 @@ static int rx8010_alarm_irq_enable(struct device *dev, static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { struct rx8010_data *rx8010 = dev_get_drvdata(dev); - int tmp; - int flagreg; + int tmp, flagreg, err; switch (cmd) { case RTC_VL_READ: - flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG); - if (flagreg < 0) - return flagreg; + err = regmap_read(rx8010->regs, RX8010_FLAG, &flagreg); + if (err) + return err; tmp = flagreg & RX8010_FLAG_VLF ? RTC_VL_DATA_INVALID : 0; return put_user(tmp, (unsigned int __user *)arg); @@ -407,65 +354,65 @@ static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) } } -static struct rtc_class_ops rx8010_rtc_ops = { +static const struct rtc_class_ops rx8010_rtc_ops = { .read_time = rx8010_get_time, .set_time = rx8010_set_time, .ioctl = rx8010_ioctl, + .read_alarm = rx8010_read_alarm, + .set_alarm = rx8010_set_alarm, + .alarm_irq_enable = rx8010_alarm_irq_enable, }; -static int rx8010_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static const struct regmap_config rx8010_regmap_config = { + .name = "rx8010-rtc", + .reg_bits = 8, + .val_bits = 8, +}; + +static int rx8010_probe(struct i2c_client *client) { - struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; struct rx8010_data *rx8010; int err = 0; - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA - | I2C_FUNC_SMBUS_I2C_BLOCK)) { - dev_err(&adapter->dev, "doesn't support required functionality\n"); - return -EIO; - } - - rx8010 = devm_kzalloc(&client->dev, sizeof(struct rx8010_data), - GFP_KERNEL); + rx8010 = devm_kzalloc(dev, sizeof(*rx8010), GFP_KERNEL); if (!rx8010) return -ENOMEM; - rx8010->client = client; i2c_set_clientdata(client, rx8010); - err = rx8010_init_client(client); + rx8010->regs = devm_regmap_init_i2c(client, &rx8010_regmap_config); + if (IS_ERR(rx8010->regs)) + return PTR_ERR(rx8010->regs); + + err = rx8010_init(dev); if (err) return err; + rx8010->rtc = devm_rtc_allocate_device(dev); + if (IS_ERR(rx8010->rtc)) + return PTR_ERR(rx8010->rtc); + if (client->irq > 0) { - dev_info(&client->dev, "IRQ %d supplied\n", client->irq); - err = devm_request_threaded_irq(&client->dev, client->irq, NULL, + dev_info(dev, "IRQ %d supplied\n", client->irq); + err = devm_request_threaded_irq(dev, client->irq, NULL, rx8010_irq_1_handler, IRQF_TRIGGER_LOW | IRQF_ONESHOT, "rx8010", client); - if (err) { - dev_err(&client->dev, "unable to request IRQ\n"); - client->irq = 0; - } else { - rx8010_rtc_ops.read_alarm = rx8010_read_alarm; - rx8010_rtc_ops.set_alarm = rx8010_set_alarm; - rx8010_rtc_ops.alarm_irq_enable = rx8010_alarm_irq_enable; + dev_err(dev, "unable to request IRQ\n"); + return err; } + } else { + clear_bit(RTC_FEATURE_ALARM, rx8010->rtc->features); } - rx8010->rtc = devm_rtc_device_register(&client->dev, client->name, - &rx8010_rtc_ops, THIS_MODULE); - - if (IS_ERR(rx8010->rtc)) { - dev_err(&client->dev, "unable to register the class device\n"); - return PTR_ERR(rx8010->rtc); - } - + rx8010->rtc->ops = &rx8010_rtc_ops; rx8010->rtc->max_user_freq = 1; + rx8010->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rx8010->rtc->range_max = RTC_TIMESTAMP_END_2099; - return 0; + return devm_rtc_register_device(rx8010->rtc); } static struct i2c_driver rx8010_driver = { @@ -473,7 +420,7 @@ static struct i2c_driver rx8010_driver = { .name = "rtc-rx8010", .of_match_table = of_match_ptr(rx8010_of_match), }, - .probe = rx8010_probe, + .probe_new = rx8010_probe, .id_table = rx8010_id, }; diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c index a24f85893f90..c914091819ba 100644 --- a/drivers/rtc/rtc-rx8025.c +++ b/drivers/rtc/rtc-rx8025.c @@ -142,10 +142,9 @@ static irqreturn_t rx8025_handle_irq(int irq, void *dev_id) { struct i2c_client *client = dev_id; struct rx8025_data *rx8025 = i2c_get_clientdata(client); - struct mutex *lock = &rx8025->rtc->ops_lock; int status; - mutex_lock(lock); + rtc_lock(rx8025->rtc); status = rx8025_read_reg(client, RX8025_REG_CTRL2); if (status < 0) goto out; @@ -170,7 +169,7 @@ static irqreturn_t rx8025_handle_irq(int irq, void *dev_id) } out: - mutex_unlock(lock); + rtc_unlock(rx8025->rtc); return IRQ_HANDLED; } diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c index 490f70f57636..aed4898a0ff4 100644 --- a/drivers/rtc/rtc-rx8581.c +++ b/drivers/rtc/rtc-rx8581.c @@ -298,11 +298,11 @@ static int rx8581_probe(struct i2c_client *client, rx8581->rtc->start_secs = 0; rx8581->rtc->set_start_time = true; - ret = rtc_register_device(rx8581->rtc); + ret = devm_rtc_register_device(rx8581->rtc); for (i = 0; i < config->num_nvram; i++) { nvmem_cfg[i].priv = rx8581; - rtc_nvmem_register(rx8581->rtc, &nvmem_cfg[i]); + devm_rtc_nvmem_register(rx8581->rtc, &nvmem_cfg[i]); } return ret; @@ -314,7 +314,7 @@ static const struct i2c_device_id rx8581_id[] = { }; MODULE_DEVICE_TABLE(i2c, rx8581_id); -static const struct of_device_id rx8581_of_match[] = { +static const __maybe_unused struct of_device_id rx8581_of_match[] = { { .compatible = "epson,rx8571", .data = &rx8571_config }, { .compatible = "epson,rx8581", .data = &rx8581_config }, { /* sentinel */ } diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c index 03672a246356..b5bdeda7d767 100644 --- a/drivers/rtc/rtc-s35390a.c +++ b/drivers/rtc/rtc-s35390a.c @@ -55,7 +55,7 @@ static const struct i2c_device_id s35390a_id[] = { }; MODULE_DEVICE_TABLE(i2c, s35390a_id); -static const struct of_device_id s35390a_of_match[] = { +static const __maybe_unused struct of_device_id s35390a_of_match[] = { { .compatible = "s35390a" }, { .compatible = "sii,s35390a" }, { } @@ -497,7 +497,7 @@ static int s35390a_probe(struct i2c_client *client, if (status1 & S35390A_FLAG_INT2) rtc_update_irq(s35390a->rtc, 1, RTC_AF); - return rtc_register_device(s35390a->rtc); + return devm_rtc_register_device(s35390a->rtc); } static struct i2c_driver s35390a_driver = { diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index e1b50e682fc4..e57d3ca70a78 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -42,26 +42,15 @@ struct s3c_rtc { const struct s3c_rtc_data *data; int irq_alarm; - int irq_tick; - - spinlock_t pie_lock; spinlock_t alarm_lock; - int ticnt_save; - int ticnt_en_save; bool wake_en; }; struct s3c_rtc_data { - int max_user_freq; bool needs_src_clk; void (*irq_handler) (struct s3c_rtc *info, int mask); - void (*set_freq) (struct s3c_rtc *info, int freq); - void (*enable_tick) (struct s3c_rtc *info, struct seq_file *seq); - void (*select_tick_clk) (struct s3c_rtc *info); - void (*save_tick_cnt) (struct s3c_rtc *info); - void (*restore_tick_cnt) (struct s3c_rtc *info); void (*enable) (struct s3c_rtc *info); void (*disable) (struct s3c_rtc *info); }; @@ -91,17 +80,7 @@ static void s3c_rtc_disable_clk(struct s3c_rtc *info) clk_disable(info->rtc_clk); } -/* IRQ Handlers */ -static irqreturn_t s3c_rtc_tickirq(int irq, void *id) -{ - struct s3c_rtc *info = (struct s3c_rtc *)id; - - if (info->data->irq_handler) - info->data->irq_handler(info, S3C2410_INTP_TIC); - - return IRQ_HANDLED; -} - +/* IRQ Handler */ static irqreturn_t s3c_rtc_alarmirq(int irq, void *id) { struct s3c_rtc *info = (struct s3c_rtc *)id; @@ -148,28 +127,6 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled) return ret; } -/* Set RTC frequency */ -static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - int ret; - - if (!is_power_of_2(freq)) - return -EINVAL; - - ret = s3c_rtc_enable_clk(info); - if (ret) - return ret; - spin_lock_irq(&info->pie_lock); - - if (info->data->set_freq) - info->data->set_freq(info, freq); - - spin_unlock_irq(&info->pie_lock); - s3c_rtc_disable_clk(info); - - return 0; -} - /* Time read/write */ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm) { @@ -348,29 +305,11 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) return 0; } -static int s3c_rtc_proc(struct device *dev, struct seq_file *seq) -{ - struct s3c_rtc *info = dev_get_drvdata(dev); - int ret; - - ret = s3c_rtc_enable_clk(info); - if (ret) - return ret; - - if (info->data->enable_tick) - info->data->enable_tick(info, seq); - - s3c_rtc_disable_clk(info); - - return 0; -} - static const struct rtc_class_ops s3c_rtcops = { .read_time = s3c_rtc_gettime, .set_time = s3c_rtc_settime, .read_alarm = s3c_rtc_getalarm, .set_alarm = s3c_rtc_setalarm, - .proc = s3c_rtc_proc, .alarm_irq_enable = s3c_rtc_setaie, }; @@ -443,25 +382,18 @@ static int s3c_rtc_remove(struct platform_device *pdev) static int s3c_rtc_probe(struct platform_device *pdev) { struct s3c_rtc *info = NULL; - struct rtc_time rtc_tm; int ret; info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; - /* find the IRQs */ - info->irq_tick = platform_get_irq(pdev, 1); - if (info->irq_tick < 0) - return info->irq_tick; - info->dev = &pdev->dev; info->data = of_device_get_match_data(&pdev->dev); if (!info->data) { dev_err(&pdev->dev, "failed getting s3c_rtc_data\n"); return -EINVAL; } - spin_lock_init(&info->pie_lock); spin_lock_init(&info->alarm_lock); platform_set_drvdata(pdev, info); @@ -470,8 +402,7 @@ static int s3c_rtc_probe(struct platform_device *pdev) if (info->irq_alarm < 0) return info->irq_alarm; - dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n", - info->irq_tick, info->irq_alarm); + dev_dbg(&pdev->dev, "s3c2410_rtc: alarm irq %d\n", info->irq_alarm); /* get the memory region */ info->base = devm_platform_ioremap_resource(pdev, 0); @@ -494,13 +425,8 @@ static int s3c_rtc_probe(struct platform_device *pdev) if (info->data->needs_src_clk) { info->rtc_src_clk = devm_clk_get(&pdev->dev, "rtc_src"); if (IS_ERR(info->rtc_src_clk)) { - ret = PTR_ERR(info->rtc_src_clk); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, - "failed to find rtc source clock\n"); - else - dev_dbg(&pdev->dev, - "probe deferred due to missing rtc src clk\n"); + ret = dev_err_probe(&pdev->dev, PTR_ERR(info->rtc_src_clk), + "failed to find rtc source clock\n"); goto err_src_clk; } ret = clk_prepare_enable(info->rtc_src_clk); @@ -508,6 +434,10 @@ static int s3c_rtc_probe(struct platform_device *pdev) goto err_src_clk; } + /* disable RTC enable bits potentially set by the bootloader */ + if (info->data->disable) + info->data->disable(info); + /* check to see if everything is setup correctly */ if (info->data->enable) info->data->enable(info); @@ -517,20 +447,6 @@ static int s3c_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 1); - /* Check RTC Time */ - if (s3c_rtc_gettime(&pdev->dev, &rtc_tm)) { - rtc_tm.tm_year = 100; - rtc_tm.tm_mon = 0; - rtc_tm.tm_mday = 1; - rtc_tm.tm_hour = 0; - rtc_tm.tm_min = 0; - rtc_tm.tm_sec = 0; - - s3c_rtc_settime(&pdev->dev, &rtc_tm); - - dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n"); - } - /* register RTC and exit */ info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops, THIS_MODULE); @@ -547,18 +463,6 @@ static int s3c_rtc_probe(struct platform_device *pdev) goto err_nortc; } - ret = devm_request_irq(&pdev->dev, info->irq_tick, s3c_rtc_tickirq, - 0, "s3c2410-rtc tick", info); - if (ret) { - dev_err(&pdev->dev, "IRQ%d error %d\n", info->irq_tick, ret); - goto err_nortc; - } - - if (info->data->select_tick_clk) - info->data->select_tick_clk(info); - - s3c_rtc_setfreq(info, 1); - s3c_rtc_disable_clk(info); return 0; @@ -586,10 +490,6 @@ static int s3c_rtc_suspend(struct device *dev) if (ret) return ret; - /* save TICNT for anyone using periodic interrupts */ - if (info->data->save_tick_cnt) - info->data->save_tick_cnt(info); - if (info->data->disable) info->data->disable(info); @@ -610,9 +510,6 @@ static int s3c_rtc_resume(struct device *dev) if (info->data->enable) info->data->enable(info); - if (info->data->restore_tick_cnt) - info->data->restore_tick_cnt(info); - s3c_rtc_disable_clk(info); if (device_may_wakeup(dev) && info->wake_en) { @@ -636,167 +533,32 @@ static void s3c6410_rtc_irq(struct s3c_rtc *info, int mask) writeb(mask, info->base + S3C2410_INTP); } -static void s3c2410_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - tmp |= val; - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c2416_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - - tmp |= S3C2443_TICNT_PART(val); - writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1); - - writel(S3C2416_TICNT2_PART(val), info->base + S3C2416_TICNT2); - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c2443_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - - tmp |= S3C2443_TICNT_PART(val); - writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1); - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - int val; - - val = (info->rtc->max_user_freq / freq) - 1; - writel(val, info->base + S3C2410_TICNT); -} - -static void s3c24xx_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq) -{ - unsigned int ticnt; - - ticnt = readb(info->base + S3C2410_TICNT); - ticnt &= S3C2410_TICNT_ENABLE; - - seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no"); -} - -static void s3c2416_rtc_select_tick_clk(struct s3c_rtc *info) -{ - unsigned int con; - - con = readw(info->base + S3C2410_RTCCON); - con |= S3C2443_RTCCON_TICSEL; - writew(con, info->base + S3C2410_RTCCON); -} - -static void s3c6410_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq) -{ - unsigned int ticnt; - - ticnt = readw(info->base + S3C2410_RTCCON); - ticnt &= S3C64XX_RTCCON_TICEN; - - seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no"); -} - -static void s3c24xx_rtc_save_tick_cnt(struct s3c_rtc *info) -{ - info->ticnt_save = readb(info->base + S3C2410_TICNT); -} - -static void s3c24xx_rtc_restore_tick_cnt(struct s3c_rtc *info) -{ - writeb(info->ticnt_save, info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_save_tick_cnt(struct s3c_rtc *info) -{ - info->ticnt_en_save = readw(info->base + S3C2410_RTCCON); - info->ticnt_en_save &= S3C64XX_RTCCON_TICEN; - info->ticnt_save = readl(info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_restore_tick_cnt(struct s3c_rtc *info) -{ - unsigned int con; - - writel(info->ticnt_save, info->base + S3C2410_TICNT); - if (info->ticnt_en_save) { - con = readw(info->base + S3C2410_RTCCON); - writew(con | info->ticnt_en_save, info->base + S3C2410_RTCCON); - } -} - static struct s3c_rtc_data const s3c2410_rtc_data = { - .max_user_freq = 128, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2410_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c2416_rtc_data = { - .max_user_freq = 32768, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2416_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .select_tick_clk = s3c2416_rtc_select_tick_clk, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c2443_rtc_data = { - .max_user_freq = 32768, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2443_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .select_tick_clk = s3c2416_rtc_select_tick_clk, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c6410_rtc_data = { - .max_user_freq = 32768, .needs_src_clk = true, .irq_handler = s3c6410_rtc_irq, - .set_freq = s3c6410_rtc_setfreq, - .enable_tick = s3c6410_rtc_enable_tick, - .save_tick_cnt = s3c6410_rtc_save_tick_cnt, - .restore_tick_cnt = s3c6410_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c6410_rtc_disable, }; -static const struct of_device_id s3c_rtc_dt_match[] = { +static const __maybe_unused struct of_device_id s3c_rtc_dt_match[] = { { .compatible = "samsung,s3c2410-rtc", .data = &s3c2410_rtc_data, diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c index eb9dde4095a9..80b66f16db89 100644 --- a/drivers/rtc/rtc-s5m.c +++ b/drivers/rtc/rtc-s5m.c @@ -760,7 +760,8 @@ static int s5m_rtc_probe(struct platform_device *pdev) return -ENODEV; } - info->i2c = i2c_new_dummy_device(s5m87xx->i2c->adapter, RTC_I2C_ADDR); + info->i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter, + RTC_I2C_ADDR); if (IS_ERR(info->i2c)) { dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); return PTR_ERR(info->i2c); @@ -771,7 +772,7 @@ static int s5m_rtc_probe(struct platform_device *pdev) ret = PTR_ERR(info->regmap); dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", ret); - goto err; + return ret; } info->dev = &pdev->dev; @@ -781,26 +782,25 @@ static int s5m_rtc_probe(struct platform_device *pdev) if (s5m87xx->irq_data) { info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); if (info->irq <= 0) { - ret = -EINVAL; dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", alarm_irq); - goto err; + return -EINVAL; } } platform_set_drvdata(pdev, info); ret = s5m8767_rtc_init_reg(info); + if (ret) + return ret; device_init_wakeup(&pdev->dev, 1); info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", &s5m_rtc_ops, THIS_MODULE); - if (IS_ERR(info->rtc_dev)) { - ret = PTR_ERR(info->rtc_dev); - goto err; - } + if (IS_ERR(info->rtc_dev)) + return PTR_ERR(info->rtc_dev); if (!info->irq) { dev_info(&pdev->dev, "Alarm IRQ not available\n"); @@ -813,24 +813,10 @@ static int s5m_rtc_probe(struct platform_device *pdev) if (ret < 0) { dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", info->irq, ret); - goto err; + return ret; } return 0; - -err: - i2c_unregister_device(info->i2c); - - return ret; -} - -static int s5m_rtc_remove(struct platform_device *pdev) -{ - struct s5m_rtc_info *info = platform_get_drvdata(pdev); - - i2c_unregister_device(info->i2c); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -874,7 +860,6 @@ static struct platform_driver s5m_rtc_driver = { .pm = &s5m_rtc_pm_ops, }, .probe = s5m_rtc_probe, - .remove = s5m_rtc_remove, .id_table = s5m_rtc_id, }; diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 9ccc97cf5e09..1250887e4382 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -205,7 +205,7 @@ int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info) info->rtc->max_user_freq = RTC_FREQ; info->rtc->range_max = U32_MAX; - ret = rtc_register_device(info->rtc); + ret = devm_rtc_register_device(info->rtc); if (ret) { clk_disable_unprepare(info->clk); return ret; diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c index 36810dd40cd3..187aa955b79c 100644 --- a/drivers/rtc/rtc-sc27xx.c +++ b/drivers/rtc/rtc-sc27xx.c @@ -299,33 +299,6 @@ static int sprd_rtc_set_secs(struct sprd_rtc *rtc, enum sprd_rtc_reg_types type, sts_mask); } -static int sprd_rtc_read_aux_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct sprd_rtc *rtc = dev_get_drvdata(dev); - time64_t secs; - u32 val; - int ret; - - ret = sprd_rtc_get_secs(rtc, SPRD_RTC_AUX_ALARM, &secs); - if (ret) - return ret; - - rtc_time64_to_tm(secs, &alrm->time); - - ret = regmap_read(rtc->regmap, rtc->base + SPRD_RTC_INT_EN, &val); - if (ret) - return ret; - - alrm->enabled = !!(val & SPRD_RTC_AUXALM_EN); - - ret = regmap_read(rtc->regmap, rtc->base + SPRD_RTC_INT_RAW_STS, &val); - if (ret) - return ret; - - alrm->pending = !!(val & SPRD_RTC_AUXALM_EN); - return 0; -} - static int sprd_rtc_set_aux_alarm(struct device *dev, struct rtc_wkalrm *alrm) { struct sprd_rtc *rtc = dev_get_drvdata(dev); @@ -415,16 +388,9 @@ static int sprd_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) u32 val; /* - * Before RTC device is registered, it will check to see if there is an - * alarm already set in RTC hardware, and we always read the normal - * alarm at this time. - * - * Or if aie_timer is enabled, we should get the normal alarm time. - * Otherwise we should get auxiliary alarm time. + * The RTC core checks to see if there is an alarm already set in RTC + * hardware, and we always read the normal alarm at this time. */ - if (rtc->rtc && rtc->rtc->registered && rtc->rtc->aie_timer.enabled == 0) - return sprd_rtc_read_aux_alarm(dev, alrm); - ret = sprd_rtc_get_secs(rtc, SPRD_RTC_ALARM, &secs); if (ret) return ret; @@ -563,7 +529,7 @@ static int sprd_rtc_check_power_down(struct sprd_rtc *rtc) * means the RTC has been powered down, so the RTC time values are * invalid. */ - rtc->valid = val == SPRD_RTC_POWER_RESET_VALUE ? false : true; + rtc->valid = val != SPRD_RTC_POWER_RESET_VALUE; return 0; } @@ -652,7 +618,7 @@ static int sprd_rtc_probe(struct platform_device *pdev) rtc->rtc->ops = &sprd_rtc_ops; rtc->rtc->range_min = 0; rtc->rtc->range_max = 5662310399LL; - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) { device_init_wakeup(&pdev->dev, 0); return ret; diff --git a/drivers/rtc/rtc-sd3078.c b/drivers/rtc/rtc-sd3078.c index a7aa943c1183..24e8528e23ec 100644 --- a/drivers/rtc/rtc-sd3078.c +++ b/drivers/rtc/rtc-sd3078.c @@ -192,7 +192,7 @@ static int sd3078_probe(struct i2c_client *client, sd3078->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; sd3078->rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = rtc_register_device(sd3078->rtc); + ret = devm_rtc_register_device(sd3078->rtc); if (ret) return ret; @@ -207,7 +207,7 @@ static const struct i2c_device_id sd3078_id[] = { }; MODULE_DEVICE_TABLE(i2c, sd3078_id); -static const struct of_device_id rtc_dt_match[] = { +static const __maybe_unused struct of_device_id rtc_dt_match[] = { { .compatible = "whwave,sd3078" }, {}, }; diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c index 9167b48014a1..cd146b574143 100644 --- a/drivers/rtc/rtc-sh.c +++ b/drivers/rtc/rtc-sh.c @@ -607,7 +607,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->range_max = mktime64(2098, 12, 31, 23, 59, 59); } - ret = rtc_register_device(rtc->rtc_dev); + ret = devm_rtc_register_device(rtc->rtc_dev); if (ret) goto err_unmap; diff --git a/drivers/rtc/rtc-sirfsoc.c b/drivers/rtc/rtc-sirfsoc.c deleted file mode 100644 index abf19435dbad..000000000000 --- a/drivers/rtc/rtc-sirfsoc.c +++ /dev/null @@ -1,446 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * SiRFSoC Real Time Clock interface for Linux - * - * Copyright (c) 2013 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/module.h> -#include <linux/err.h> -#include <linux/rtc.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/regmap.h> -#include <linux/rtc/sirfsoc_rtciobrg.h> - - -#define RTC_CN 0x00 -#define RTC_ALARM0 0x04 -#define RTC_ALARM1 0x18 -#define RTC_STATUS 0x08 -#define RTC_SW_VALUE 0x40 -#define SIRFSOC_RTC_AL1E (1<<6) -#define SIRFSOC_RTC_AL1 (1<<4) -#define SIRFSOC_RTC_HZE (1<<3) -#define SIRFSOC_RTC_AL0E (1<<2) -#define SIRFSOC_RTC_HZ (1<<1) -#define SIRFSOC_RTC_AL0 (1<<0) -#define RTC_DIV 0x0c -#define RTC_DEEP_CTRL 0x14 -#define RTC_CLOCK_SWITCH 0x1c -#define SIRFSOC_RTC_CLK 0x03 /* others are reserved */ - -/* Refer to RTC DIV switch */ -#define RTC_HZ 16 - -/* This macro is also defined in arch/arm/plat-sirfsoc/cpu.c */ -#define RTC_SHIFT 4 - -#define INTR_SYSRTC_CN 0x48 - -struct sirfsoc_rtc_drv { - struct rtc_device *rtc; - u32 rtc_base; - u32 irq; - unsigned irq_wake; - /* Overflow for every 8 years extra time */ - u32 overflow_rtc; - spinlock_t lock; - struct regmap *regmap; -#ifdef CONFIG_PM - u32 saved_counter; - u32 saved_overflow_rtc; -#endif -}; - -static u32 sirfsoc_rtc_readl(struct sirfsoc_rtc_drv *rtcdrv, u32 offset) -{ - u32 val; - - regmap_read(rtcdrv->regmap, rtcdrv->rtc_base + offset, &val); - return val; -} - -static void sirfsoc_rtc_writel(struct sirfsoc_rtc_drv *rtcdrv, - u32 offset, u32 val) -{ - regmap_write(rtcdrv->regmap, rtcdrv->rtc_base + offset, val); -} - -static int sirfsoc_rtc_read_alarm(struct device *dev, - struct rtc_wkalrm *alrm) -{ - unsigned long rtc_alarm, rtc_count; - struct sirfsoc_rtc_drv *rtcdrv; - - rtcdrv = dev_get_drvdata(dev); - - spin_lock_irq(&rtcdrv->lock); - - rtc_count = sirfsoc_rtc_readl(rtcdrv, RTC_CN); - - rtc_alarm = sirfsoc_rtc_readl(rtcdrv, RTC_ALARM0); - memset(alrm, 0, sizeof(struct rtc_wkalrm)); - - /* - * assume alarm interval not beyond one round counter overflow_rtc: - * 0->0xffffffff - */ - /* if alarm is in next overflow cycle */ - if (rtc_count > rtc_alarm) - rtc_time64_to_tm((rtcdrv->overflow_rtc + 1) - << (BITS_PER_LONG - RTC_SHIFT) - | rtc_alarm >> RTC_SHIFT, &alrm->time); - else - rtc_time64_to_tm(rtcdrv->overflow_rtc - << (BITS_PER_LONG - RTC_SHIFT) - | rtc_alarm >> RTC_SHIFT, &alrm->time); - if (sirfsoc_rtc_readl(rtcdrv, RTC_STATUS) & SIRFSOC_RTC_AL0E) - alrm->enabled = 1; - - spin_unlock_irq(&rtcdrv->lock); - - return 0; -} - -static int sirfsoc_rtc_set_alarm(struct device *dev, - struct rtc_wkalrm *alrm) -{ - unsigned long rtc_status_reg, rtc_alarm; - struct sirfsoc_rtc_drv *rtcdrv; - rtcdrv = dev_get_drvdata(dev); - - if (alrm->enabled) { - rtc_alarm = rtc_tm_to_time64(&alrm->time); - - spin_lock_irq(&rtcdrv->lock); - - rtc_status_reg = sirfsoc_rtc_readl(rtcdrv, RTC_STATUS); - if (rtc_status_reg & SIRFSOC_RTC_AL0E) { - /* - * An ongoing alarm in progress - ingore it and not - * to return EBUSY - */ - dev_info(dev, "An old alarm was set, will be replaced by a new one\n"); - } - - sirfsoc_rtc_writel(rtcdrv, RTC_ALARM0, rtc_alarm << RTC_SHIFT); - rtc_status_reg &= ~0x07; /* mask out the lower status bits */ - /* - * This bit RTC_AL sets it as a wake-up source for Sleep Mode - * Writing 1 into this bit will clear it - */ - rtc_status_reg |= SIRFSOC_RTC_AL0; - /* enable the RTC alarm interrupt */ - rtc_status_reg |= SIRFSOC_RTC_AL0E; - sirfsoc_rtc_writel(rtcdrv, RTC_STATUS, rtc_status_reg); - - spin_unlock_irq(&rtcdrv->lock); - } else { - /* - * if this function was called with enabled=0 - * then it could mean that the application is - * trying to cancel an ongoing alarm - */ - spin_lock_irq(&rtcdrv->lock); - - rtc_status_reg = sirfsoc_rtc_readl(rtcdrv, RTC_STATUS); - if (rtc_status_reg & SIRFSOC_RTC_AL0E) { - /* clear the RTC status register's alarm bit */ - rtc_status_reg &= ~0x07; - /* write 1 into SIRFSOC_RTC_AL0 to force a clear */ - rtc_status_reg |= (SIRFSOC_RTC_AL0); - /* Clear the Alarm enable bit */ - rtc_status_reg &= ~(SIRFSOC_RTC_AL0E); - - sirfsoc_rtc_writel(rtcdrv, RTC_STATUS, - rtc_status_reg); - } - - spin_unlock_irq(&rtcdrv->lock); - } - - return 0; -} - -static int sirfsoc_rtc_read_time(struct device *dev, - struct rtc_time *tm) -{ - unsigned long tmp_rtc = 0; - struct sirfsoc_rtc_drv *rtcdrv; - rtcdrv = dev_get_drvdata(dev); - /* - * This patch is taken from WinCE - Need to validate this for - * correctness. To work around sirfsoc RTC counter double sync logic - * fail, read several times to make sure get stable value. - */ - do { - tmp_rtc = sirfsoc_rtc_readl(rtcdrv, RTC_CN); - cpu_relax(); - } while (tmp_rtc != sirfsoc_rtc_readl(rtcdrv, RTC_CN)); - - rtc_time64_to_tm(rtcdrv->overflow_rtc << (BITS_PER_LONG - RTC_SHIFT) - | tmp_rtc >> RTC_SHIFT, tm); - return 0; -} - -static int sirfsoc_rtc_set_time(struct device *dev, - struct rtc_time *tm) -{ - unsigned long rtc_time; - struct sirfsoc_rtc_drv *rtcdrv; - rtcdrv = dev_get_drvdata(dev); - - rtc_time = rtc_tm_to_time64(tm); - - rtcdrv->overflow_rtc = rtc_time >> (BITS_PER_LONG - RTC_SHIFT); - - sirfsoc_rtc_writel(rtcdrv, RTC_SW_VALUE, rtcdrv->overflow_rtc); - sirfsoc_rtc_writel(rtcdrv, RTC_CN, rtc_time << RTC_SHIFT); - - return 0; -} - -static int sirfsoc_rtc_alarm_irq_enable(struct device *dev, - unsigned int enabled) -{ - unsigned long rtc_status_reg = 0x0; - struct sirfsoc_rtc_drv *rtcdrv; - - rtcdrv = dev_get_drvdata(dev); - - spin_lock_irq(&rtcdrv->lock); - - rtc_status_reg = sirfsoc_rtc_readl(rtcdrv, RTC_STATUS); - if (enabled) - rtc_status_reg |= SIRFSOC_RTC_AL0E; - else - rtc_status_reg &= ~SIRFSOC_RTC_AL0E; - - sirfsoc_rtc_writel(rtcdrv, RTC_STATUS, rtc_status_reg); - - spin_unlock_irq(&rtcdrv->lock); - - return 0; - -} - -static const struct rtc_class_ops sirfsoc_rtc_ops = { - .read_time = sirfsoc_rtc_read_time, - .set_time = sirfsoc_rtc_set_time, - .read_alarm = sirfsoc_rtc_read_alarm, - .set_alarm = sirfsoc_rtc_set_alarm, - .alarm_irq_enable = sirfsoc_rtc_alarm_irq_enable -}; - -static irqreturn_t sirfsoc_rtc_irq_handler(int irq, void *pdata) -{ - struct sirfsoc_rtc_drv *rtcdrv = pdata; - unsigned long rtc_status_reg = 0x0; - unsigned long events = 0x0; - - spin_lock(&rtcdrv->lock); - - rtc_status_reg = sirfsoc_rtc_readl(rtcdrv, RTC_STATUS); - /* this bit will be set ONLY if an alarm was active - * and it expired NOW - * So this is being used as an ASSERT - */ - if (rtc_status_reg & SIRFSOC_RTC_AL0) { - /* - * clear the RTC status register's alarm bit - * mask out the lower status bits - */ - rtc_status_reg &= ~0x07; - /* write 1 into SIRFSOC_RTC_AL0 to ACK the alarm interrupt */ - rtc_status_reg |= (SIRFSOC_RTC_AL0); - /* Clear the Alarm enable bit */ - rtc_status_reg &= ~(SIRFSOC_RTC_AL0E); - } - - sirfsoc_rtc_writel(rtcdrv, RTC_STATUS, rtc_status_reg); - - spin_unlock(&rtcdrv->lock); - - /* this should wake up any apps polling/waiting on the read - * after setting the alarm - */ - events |= RTC_IRQF | RTC_AF; - rtc_update_irq(rtcdrv->rtc, 1, events); - - return IRQ_HANDLED; -} - -static const struct of_device_id sirfsoc_rtc_of_match[] = { - { .compatible = "sirf,prima2-sysrtc"}, - {}, -}; - -static const struct regmap_config sysrtc_regmap_config = { - .reg_bits = 32, - .val_bits = 32, - .fast_io = true, -}; - -MODULE_DEVICE_TABLE(of, sirfsoc_rtc_of_match); - -static int sirfsoc_rtc_probe(struct platform_device *pdev) -{ - int err; - unsigned long rtc_div; - struct sirfsoc_rtc_drv *rtcdrv; - struct device_node *np = pdev->dev.of_node; - - rtcdrv = devm_kzalloc(&pdev->dev, - sizeof(struct sirfsoc_rtc_drv), GFP_KERNEL); - if (rtcdrv == NULL) - return -ENOMEM; - - spin_lock_init(&rtcdrv->lock); - - err = of_property_read_u32(np, "reg", &rtcdrv->rtc_base); - if (err) { - dev_err(&pdev->dev, "unable to find base address of rtc node in dtb\n"); - return err; - } - - platform_set_drvdata(pdev, rtcdrv); - - /* Register rtc alarm as a wakeup source */ - device_init_wakeup(&pdev->dev, 1); - - rtcdrv->regmap = devm_regmap_init_iobg(&pdev->dev, - &sysrtc_regmap_config); - if (IS_ERR(rtcdrv->regmap)) { - err = PTR_ERR(rtcdrv->regmap); - dev_err(&pdev->dev, "Failed to allocate register map: %d\n", - err); - return err; - } - - /* - * Set SYS_RTC counter in RTC_HZ HZ Units - * We are using 32K RTC crystal (32768 / RTC_HZ / 2) -1 - * If 16HZ, therefore RTC_DIV = 1023; - */ - rtc_div = ((32768 / RTC_HZ) / 2) - 1; - sirfsoc_rtc_writel(rtcdrv, RTC_DIV, rtc_div); - - /* 0x3 -> RTC_CLK */ - sirfsoc_rtc_writel(rtcdrv, RTC_CLOCK_SWITCH, SIRFSOC_RTC_CLK); - - /* reset SYS RTC ALARM0 */ - sirfsoc_rtc_writel(rtcdrv, RTC_ALARM0, 0x0); - - /* reset SYS RTC ALARM1 */ - sirfsoc_rtc_writel(rtcdrv, RTC_ALARM1, 0x0); - - /* Restore RTC Overflow From Register After Command Reboot */ - rtcdrv->overflow_rtc = - sirfsoc_rtc_readl(rtcdrv, RTC_SW_VALUE); - - rtcdrv->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(rtcdrv->rtc)) - return PTR_ERR(rtcdrv->rtc); - - rtcdrv->rtc->ops = &sirfsoc_rtc_ops; - rtcdrv->rtc->range_max = (1ULL << 60) - 1; - - rtcdrv->irq = platform_get_irq(pdev, 0); - err = devm_request_irq(&pdev->dev, rtcdrv->irq, sirfsoc_rtc_irq_handler, - IRQF_SHARED, pdev->name, rtcdrv); - if (err) { - dev_err(&pdev->dev, "Unable to register for the SiRF SOC RTC IRQ\n"); - return err; - } - - return rtc_register_device(rtcdrv->rtc); -} - -#ifdef CONFIG_PM_SLEEP -static int sirfsoc_rtc_suspend(struct device *dev) -{ - struct sirfsoc_rtc_drv *rtcdrv = dev_get_drvdata(dev); - rtcdrv->overflow_rtc = - sirfsoc_rtc_readl(rtcdrv, RTC_SW_VALUE); - - rtcdrv->saved_counter = - sirfsoc_rtc_readl(rtcdrv, RTC_CN); - rtcdrv->saved_overflow_rtc = rtcdrv->overflow_rtc; - if (device_may_wakeup(dev) && !enable_irq_wake(rtcdrv->irq)) - rtcdrv->irq_wake = 1; - - return 0; -} - -static int sirfsoc_rtc_resume(struct device *dev) -{ - u32 tmp; - struct sirfsoc_rtc_drv *rtcdrv = dev_get_drvdata(dev); - - /* - * if resume from snapshot and the rtc power is lost, - * restroe the rtc settings - */ - if (SIRFSOC_RTC_CLK != sirfsoc_rtc_readl(rtcdrv, RTC_CLOCK_SWITCH)) { - u32 rtc_div; - /* 0x3 -> RTC_CLK */ - sirfsoc_rtc_writel(rtcdrv, RTC_CLOCK_SWITCH, SIRFSOC_RTC_CLK); - /* - * Set SYS_RTC counter in RTC_HZ HZ Units - * We are using 32K RTC crystal (32768 / RTC_HZ / 2) -1 - * If 16HZ, therefore RTC_DIV = 1023; - */ - rtc_div = ((32768 / RTC_HZ) / 2) - 1; - - sirfsoc_rtc_writel(rtcdrv, RTC_DIV, rtc_div); - - /* reset SYS RTC ALARM0 */ - sirfsoc_rtc_writel(rtcdrv, RTC_ALARM0, 0x0); - - /* reset SYS RTC ALARM1 */ - sirfsoc_rtc_writel(rtcdrv, RTC_ALARM1, 0x0); - } - rtcdrv->overflow_rtc = rtcdrv->saved_overflow_rtc; - - /* - * if current counter is small than previous, - * it means overflow in sleep - */ - tmp = sirfsoc_rtc_readl(rtcdrv, RTC_CN); - if (tmp <= rtcdrv->saved_counter) - rtcdrv->overflow_rtc++; - /* - *PWRC Value Be Changed When Suspend, Restore Overflow - * In Memory To Register - */ - sirfsoc_rtc_writel(rtcdrv, RTC_SW_VALUE, rtcdrv->overflow_rtc); - - if (device_may_wakeup(dev) && rtcdrv->irq_wake) { - disable_irq_wake(rtcdrv->irq); - rtcdrv->irq_wake = 0; - } - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(sirfsoc_rtc_pm_ops, - sirfsoc_rtc_suspend, sirfsoc_rtc_resume); - -static struct platform_driver sirfsoc_rtc_driver = { - .driver = { - .name = "sirfsoc-rtc", - .pm = &sirfsoc_rtc_pm_ops, - .of_match_table = sirfsoc_rtc_of_match, - }, - .probe = sirfsoc_rtc_probe, -}; -module_platform_driver(sirfsoc_rtc_driver); - -MODULE_DESCRIPTION("SiRF SoC rtc driver"); -MODULE_AUTHOR("Xianglong Du <[email protected]>"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:sirfsoc-rtc"); diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c index 0263d996b8a8..bd929b0e7d7d 100644 --- a/drivers/rtc/rtc-snvs.c +++ b/drivers/rtc/rtc-snvs.c @@ -151,17 +151,14 @@ static int snvs_rtc_read_time(struct device *dev, struct rtc_time *tm) unsigned long time; int ret; - if (data->clk) { - ret = clk_enable(data->clk); - if (ret) - return ret; - } + ret = clk_enable(data->clk); + if (ret) + return ret; time = rtc_read_lp_counter(data); rtc_time64_to_tm(time, tm); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return 0; } @@ -172,11 +169,9 @@ static int snvs_rtc_set_time(struct device *dev, struct rtc_time *tm) unsigned long time = rtc_tm_to_time64(tm); int ret; - if (data->clk) { - ret = clk_enable(data->clk); - if (ret) - return ret; - } + ret = clk_enable(data->clk); + if (ret) + return ret; /* Disable RTC first */ ret = snvs_rtc_enable(data, false); @@ -190,8 +185,7 @@ static int snvs_rtc_set_time(struct device *dev, struct rtc_time *tm) /* Enable RTC again */ ret = snvs_rtc_enable(data, true); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return ret; } @@ -202,11 +196,9 @@ static int snvs_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) u32 lptar, lpsr; int ret; - if (data->clk) { - ret = clk_enable(data->clk); - if (ret) - return ret; - } + ret = clk_enable(data->clk); + if (ret) + return ret; regmap_read(data->regmap, data->offset + SNVS_LPTAR, &lptar); rtc_time64_to_tm(lptar, &alrm->time); @@ -214,8 +206,7 @@ static int snvs_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr); alrm->pending = (lpsr & SNVS_LPSR_LPTA) ? 1 : 0; - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return 0; } @@ -225,11 +216,9 @@ static int snvs_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) struct snvs_rtc_data *data = dev_get_drvdata(dev); int ret; - if (data->clk) { - ret = clk_enable(data->clk); - if (ret) - return ret; - } + ret = clk_enable(data->clk); + if (ret) + return ret; regmap_update_bits(data->regmap, data->offset + SNVS_LPCR, (SNVS_LPCR_LPTA_EN | SNVS_LPCR_LPWUI_EN), @@ -237,8 +226,7 @@ static int snvs_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) ret = rtc_write_sync_lp(data); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return ret; } @@ -249,11 +237,9 @@ static int snvs_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) unsigned long time = rtc_tm_to_time64(&alrm->time); int ret; - if (data->clk) { - ret = clk_enable(data->clk); - if (ret) - return ret; - } + ret = clk_enable(data->clk); + if (ret) + return ret; regmap_update_bits(data->regmap, data->offset + SNVS_LPCR, SNVS_LPCR_LPTA_EN, 0); ret = rtc_write_sync_lp(data); @@ -264,8 +250,7 @@ static int snvs_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) /* Clear alarm interrupt status bit */ regmap_write(data->regmap, data->offset + SNVS_LPSR, SNVS_LPSR_LPTA); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return snvs_rtc_alarm_irq_enable(dev, alrm->enabled); } @@ -285,8 +270,7 @@ static irqreturn_t snvs_rtc_irq_handler(int irq, void *dev_id) u32 lpsr; u32 events = 0; - if (data->clk) - clk_enable(data->clk); + clk_enable(data->clk); regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr); @@ -302,8 +286,7 @@ static irqreturn_t snvs_rtc_irq_handler(int irq, void *dev_id) /* clear interrupt status */ regmap_write(data->regmap, data->offset + SNVS_LPSR, lpsr); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return events ? IRQ_HANDLED : IRQ_NONE; } @@ -316,8 +299,7 @@ static const struct regmap_config snvs_rtc_config = { static void snvs_rtc_action(void *data) { - if (data) - clk_disable_unprepare(data); + clk_disable_unprepare(data); } static int snvs_rtc_probe(struct platform_device *pdev) @@ -405,15 +387,14 @@ static int snvs_rtc_probe(struct platform_device *pdev) data->rtc->ops = &snvs_rtc_ops; data->rtc->range_max = U32_MAX; - return rtc_register_device(data->rtc); + return devm_rtc_register_device(data->rtc); } static int __maybe_unused snvs_rtc_suspend_noirq(struct device *dev) { struct snvs_rtc_data *data = dev_get_drvdata(dev); - if (data->clk) - clk_disable(data->clk); + clk_disable(data->clk); return 0; } diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c index 51041dc08af4..bdb20f63254e 100644 --- a/drivers/rtc/rtc-st-lpc.c +++ b/drivers/rtc/rtc-st-lpc.c @@ -173,7 +173,7 @@ static int st_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *t) return 0; } -static struct rtc_class_ops st_rtc_ops = { +static const struct rtc_class_ops st_rtc_ops = { .read_time = st_rtc_read_time, .set_time = st_rtc_set_time, .read_alarm = st_rtc_read_alarm, @@ -250,7 +250,7 @@ static int st_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->range_max = U64_MAX; do_div(rtc->rtc_dev->range_max, rtc->clkrate); - ret = rtc_register_device(rtc->rtc_dev); + ret = devm_rtc_register_device(rtc->rtc_dev); if (ret) { clk_disable_unprepare(rtc->clk); return ret; diff --git a/drivers/rtc/rtc-starfire.c b/drivers/rtc/rtc-starfire.c index 37a26279e107..fbd1ed41cbf1 100644 --- a/drivers/rtc/rtc-starfire.c +++ b/drivers/rtc/rtc-starfire.c @@ -48,7 +48,7 @@ static int __init starfire_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtc); - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct platform_driver starfire_rtc_driver = { diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c index 01a45044f468..7cb6be1b7815 100644 --- a/drivers/rtc/rtc-stk17ta8.c +++ b/drivers/rtc/rtc-stk17ta8.c @@ -311,14 +311,13 @@ static int stk17ta8_rtc_probe(struct platform_device *pdev) return PTR_ERR(pdata->rtc); pdata->rtc->ops = &stk17ta8_rtc_ops; - pdata->rtc->nvram_old_abi = true; nvmem_cfg.priv = pdata; - ret = rtc_nvmem_register(pdata->rtc, &nvmem_cfg); + ret = devm_rtc_nvmem_register(pdata->rtc, &nvmem_cfg); if (ret) return ret; - return rtc_register_device(pdata->rtc); + return devm_rtc_register_device(pdata->rtc); } /* work with hotplug and coldplug */ diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c index d774aa18f57a..75a8924ba12b 100644 --- a/drivers/rtc/rtc-stm32.c +++ b/drivers/rtc/rtc-stm32.c @@ -209,7 +209,7 @@ static irqreturn_t stm32_rtc_alarm_irq(int irq, void *dev_id) const struct stm32_rtc_events *evts = &rtc->data->events; unsigned int status, cr; - mutex_lock(&rtc->rtc_dev->ops_lock); + rtc_lock(rtc->rtc_dev); status = readl_relaxed(rtc->base + regs->sr); cr = readl_relaxed(rtc->base + regs->cr); @@ -226,7 +226,7 @@ static irqreturn_t stm32_rtc_alarm_irq(int irq, void *dev_id) stm32_rtc_clear_event_flags(rtc, evts->alra); } - mutex_unlock(&rtc->rtc_dev->ops_lock); + rtc_unlock(rtc->rtc_dev); return IRQ_HANDLED; } diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c index 0a969af80af7..40c0f7ed36e0 100644 --- a/drivers/rtc/rtc-stmp3xxx.c +++ b/drivers/rtc/rtc-stmp3xxx.c @@ -366,7 +366,7 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev) rtc_data->rtc->ops = &stmp3xxx_rtc_ops; rtc_data->rtc->range_max = U32_MAX; - err = rtc_register_device(rtc_data->rtc); + err = devm_rtc_register_device(rtc_data->rtc); if (err) return err; diff --git a/drivers/rtc/rtc-sun4v.c b/drivers/rtc/rtc-sun4v.c index 036463dfa103..a86e27de8c06 100644 --- a/drivers/rtc/rtc-sun4v.c +++ b/drivers/rtc/rtc-sun4v.c @@ -86,7 +86,7 @@ static int __init sun4v_rtc_probe(struct platform_device *pdev) rtc->range_max = U64_MAX; platform_set_drvdata(pdev, rtc); - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct platform_driver sun4v_rtc_driver = { diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c index e2b8b150bcb4..adec1b14a8de 100644 --- a/drivers/rtc/rtc-sun6i.c +++ b/drivers/rtc/rtc-sun6i.c @@ -272,7 +272,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, 300000000); if (IS_ERR(rtc->int_osc)) { pr_crit("Couldn't register the internal oscillator\n"); - return; + goto err; } parents[0] = clk_hw_get_name(rtc->int_osc); @@ -290,7 +290,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, rtc->losc = clk_register(NULL, &rtc->hw); if (IS_ERR(rtc->losc)) { pr_crit("Couldn't register the LOSC clock\n"); - return; + goto err_register; } of_property_read_string_index(node, "clock-output-names", 1, @@ -301,7 +301,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, &rtc->lock); if (IS_ERR(rtc->ext_losc)) { pr_crit("Couldn't register the LOSC external gate\n"); - return; + goto err_register; } clk_data->num = 2; @@ -314,6 +314,8 @@ static void __init sun6i_rtc_clk_init(struct device_node *node, of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); return; +err_register: + clk_hw_unregister_fixed_rate(rtc->int_osc); err: kfree(clk_data); } @@ -724,7 +726,7 @@ static int sun6i_rtc_probe(struct platform_device *pdev) chip->rtc->ops = &sun6i_rtc_ops; chip->rtc->range_max = 2019686399LL; /* 2033-12-31 23:59:59 */ - ret = rtc_register_device(chip->rtc); + ret = devm_rtc_register_device(chip->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-sunxi.c b/drivers/rtc/rtc-sunxi.c index f5d7f44550ce..5d019e3a835a 100644 --- a/drivers/rtc/rtc-sunxi.c +++ b/drivers/rtc/rtc-sunxi.c @@ -470,7 +470,7 @@ static int sunxi_rtc_probe(struct platform_device *pdev) chip->rtc->ops = &sunxi_rtc_ops; - return rtc_register_device(chip->rtc); + return devm_rtc_register_device(chip->rtc); } static struct platform_driver sunxi_rtc_driver = { diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c index 7fbb1741692f..85f7ad5d5390 100644 --- a/drivers/rtc/rtc-tegra.c +++ b/drivers/rtc/rtc-tegra.c @@ -232,7 +232,7 @@ static irqreturn_t tegra_rtc_irq_handler(int irq, void *data) { struct device *dev = data; struct tegra_rtc_info *info = dev_get_drvdata(dev); - unsigned long events = 0, flags; + unsigned long events = 0; u32 status; status = readl(info->base + TEGRA_RTC_REG_INTR_STATUS); @@ -240,10 +240,10 @@ static irqreturn_t tegra_rtc_irq_handler(int irq, void *data) /* clear the interrupt masks and status on any IRQ */ tegra_rtc_wait_while_busy(dev); - spin_lock_irqsave(&info->lock, flags); + spin_lock(&info->lock); writel(0, info->base + TEGRA_RTC_REG_INTR_MASK); writel(status, info->base + TEGRA_RTC_REG_INTR_STATUS); - spin_unlock_irqrestore(&info->lock, flags); + spin_unlock(&info->lock); } /* check if alarm */ @@ -329,7 +329,7 @@ static int tegra_rtc_probe(struct platform_device *pdev) goto disable_clk; } - ret = rtc_register_device(info->rtc); + ret = devm_rtc_register_device(info->rtc); if (ret) goto disable_clk; diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c index 74b3a0603b73..7e0d8fb26465 100644 --- a/drivers/rtc/rtc-test.c +++ b/drivers/rtc/rtc-test.c @@ -50,7 +50,6 @@ static int test_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) if (expires > U32_MAX) expires = U32_MAX; - pr_err("ABE: %s +%d %s\n", __FILE__, __LINE__, __func__); rtd->alarm.expires = expires; if (alrm->enabled) @@ -139,7 +138,7 @@ static int test_probe(struct platform_device *plat_dev) timer_setup(&rtd->alarm, test_rtc_alarm_handler, 0); rtd->alarm.expires = 0; - return rtc_register_device(rtd->rtc); + return devm_rtc_register_device(rtd->rtc); } static struct platform_driver test_driver = { diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index e39af2d67051..a980337c3065 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c @@ -280,7 +280,7 @@ static int tps6586x_rtc_probe(struct platform_device *pdev) goto fail_rtc_register; } - ret = rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc->rtc); if (ret) goto fail_rtc_register; diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c index e3840386f430..288abb1abdb8 100644 --- a/drivers/rtc/rtc-tps65910.c +++ b/drivers/rtc/rtc-tps65910.c @@ -361,13 +361,6 @@ static const struct rtc_class_ops tps65910_rtc_ops = { .set_offset = tps65910_set_offset, }; -static const struct rtc_class_ops tps65910_rtc_ops_noirq = { - .read_time = tps65910_rtc_read_time, - .set_time = tps65910_rtc_set_time, - .read_offset = tps65910_read_offset, - .set_offset = tps65910_set_offset, -}; - static int tps65910_rtc_probe(struct platform_device *pdev) { struct tps65910 *tps65910 = NULL; @@ -426,15 +419,19 @@ static int tps65910_rtc_probe(struct platform_device *pdev) tps_rtc->irq = irq; if (irq != -1) { - device_set_wakeup_capable(&pdev->dev, 1); - tps_rtc->rtc->ops = &tps65910_rtc_ops; - } else - tps_rtc->rtc->ops = &tps65910_rtc_ops_noirq; + if (device_property_present(tps65910->dev, "wakeup-source")) + device_init_wakeup(&pdev->dev, 1); + else + device_set_wakeup_capable(&pdev->dev, 1); + } else { + clear_bit(RTC_FEATURE_ALARM, tps_rtc->rtc->features); + } + tps_rtc->rtc->ops = &tps65910_rtc_ops; tps_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; tps_rtc->rtc->range_max = RTC_TIMESTAMP_END_2099; - return rtc_register_device(tps_rtc->rtc); + return devm_rtc_register_device(tps_rtc->rtc); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c deleted file mode 100644 index 715b82981279..000000000000 --- a/drivers/rtc/rtc-tx4939.c +++ /dev/null @@ -1,304 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * TX4939 internal RTC driver - * Based on RBTX49xx patch from CELF patch archive. - * - * (C) Copyright TOSHIBA CORPORATION 2005-2007 - */ -#include <linux/rtc.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/io.h> -#include <linux/gfp.h> - -#define TX4939_RTCCTL_ALME 0x00000080 -#define TX4939_RTCCTL_ALMD 0x00000040 -#define TX4939_RTCCTL_BUSY 0x00000020 - -#define TX4939_RTCCTL_COMMAND 0x00000007 -#define TX4939_RTCCTL_COMMAND_NOP 0x00000000 -#define TX4939_RTCCTL_COMMAND_GETTIME 0x00000001 -#define TX4939_RTCCTL_COMMAND_SETTIME 0x00000002 -#define TX4939_RTCCTL_COMMAND_GETALARM 0x00000003 -#define TX4939_RTCCTL_COMMAND_SETALARM 0x00000004 - -#define TX4939_RTCTBC_PM 0x00000080 -#define TX4939_RTCTBC_COMP 0x0000007f - -#define TX4939_RTC_REG_RAMSIZE 0x00000100 -#define TX4939_RTC_REG_RWBSIZE 0x00000006 - -struct tx4939_rtc_reg { - __u32 ctl; - __u32 adr; - __u32 dat; - __u32 tbc; -}; - -struct tx4939rtc_plat_data { - struct rtc_device *rtc; - struct tx4939_rtc_reg __iomem *rtcreg; - spinlock_t lock; -}; - -static int tx4939_rtc_cmd(struct tx4939_rtc_reg __iomem *rtcreg, int cmd) -{ - int i = 0; - - __raw_writel(cmd, &rtcreg->ctl); - /* This might take 30us (next 32.768KHz clock) */ - while (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_BUSY) { - /* timeout on approx. 100us (@ GBUS200MHz) */ - if (i++ > 200 * 100) - return -EBUSY; - cpu_relax(); - } - return 0; -} - -static int tx4939_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev); - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - unsigned long secs = rtc_tm_to_time64(tm); - int i, ret; - unsigned char buf[6]; - - buf[0] = 0; - buf[1] = 0; - buf[2] = secs; - buf[3] = secs >> 8; - buf[4] = secs >> 16; - buf[5] = secs >> 24; - spin_lock_irq(&pdata->lock); - __raw_writel(0, &rtcreg->adr); - for (i = 0; i < 6; i++) - __raw_writel(buf[i], &rtcreg->dat); - ret = tx4939_rtc_cmd(rtcreg, - TX4939_RTCCTL_COMMAND_SETTIME | - (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME)); - spin_unlock_irq(&pdata->lock); - return ret; -} - -static int tx4939_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev); - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - int i, ret; - unsigned long sec; - unsigned char buf[6]; - - spin_lock_irq(&pdata->lock); - ret = tx4939_rtc_cmd(rtcreg, - TX4939_RTCCTL_COMMAND_GETTIME | - (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME)); - if (ret) { - spin_unlock_irq(&pdata->lock); - return ret; - } - __raw_writel(2, &rtcreg->adr); - for (i = 2; i < 6; i++) - buf[i] = __raw_readl(&rtcreg->dat); - spin_unlock_irq(&pdata->lock); - sec = ((unsigned long)buf[5] << 24) | (buf[4] << 16) | - (buf[3] << 8) | buf[2]; - rtc_time64_to_tm(sec, tm); - return 0; -} - -static int tx4939_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev); - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - int i, ret; - unsigned long sec; - unsigned char buf[6]; - - sec = rtc_tm_to_time64(&alrm->time); - buf[0] = 0; - buf[1] = 0; - buf[2] = sec; - buf[3] = sec >> 8; - buf[4] = sec >> 16; - buf[5] = sec >> 24; - spin_lock_irq(&pdata->lock); - __raw_writel(0, &rtcreg->adr); - for (i = 0; i < 6; i++) - __raw_writel(buf[i], &rtcreg->dat); - ret = tx4939_rtc_cmd(rtcreg, TX4939_RTCCTL_COMMAND_SETALARM | - (alrm->enabled ? TX4939_RTCCTL_ALME : 0)); - spin_unlock_irq(&pdata->lock); - return ret; -} - -static int tx4939_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev); - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - int i, ret; - unsigned long sec; - unsigned char buf[6]; - u32 ctl; - - spin_lock_irq(&pdata->lock); - ret = tx4939_rtc_cmd(rtcreg, - TX4939_RTCCTL_COMMAND_GETALARM | - (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALME)); - if (ret) { - spin_unlock_irq(&pdata->lock); - return ret; - } - __raw_writel(2, &rtcreg->adr); - for (i = 2; i < 6; i++) - buf[i] = __raw_readl(&rtcreg->dat); - ctl = __raw_readl(&rtcreg->ctl); - alrm->enabled = (ctl & TX4939_RTCCTL_ALME) ? 1 : 0; - alrm->pending = (ctl & TX4939_RTCCTL_ALMD) ? 1 : 0; - spin_unlock_irq(&pdata->lock); - sec = ((unsigned long)buf[5] << 24) | (buf[4] << 16) | - (buf[3] << 8) | buf[2]; - rtc_time64_to_tm(sec, &alrm->time); - return rtc_valid_tm(&alrm->time); -} - -static int tx4939_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev); - - spin_lock_irq(&pdata->lock); - tx4939_rtc_cmd(pdata->rtcreg, - TX4939_RTCCTL_COMMAND_NOP | - (enabled ? TX4939_RTCCTL_ALME : 0)); - spin_unlock_irq(&pdata->lock); - return 0; -} - -static irqreturn_t tx4939_rtc_interrupt(int irq, void *dev_id) -{ - struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev_id); - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - unsigned long events = RTC_IRQF; - - spin_lock(&pdata->lock); - if (__raw_readl(&rtcreg->ctl) & TX4939_RTCCTL_ALMD) { - events |= RTC_AF; - tx4939_rtc_cmd(rtcreg, TX4939_RTCCTL_COMMAND_NOP); - } - spin_unlock(&pdata->lock); - rtc_update_irq(pdata->rtc, 1, events); - - return IRQ_HANDLED; -} - -static const struct rtc_class_ops tx4939_rtc_ops = { - .read_time = tx4939_rtc_read_time, - .read_alarm = tx4939_rtc_read_alarm, - .set_alarm = tx4939_rtc_set_alarm, - .set_time = tx4939_rtc_set_time, - .alarm_irq_enable = tx4939_rtc_alarm_irq_enable, -}; - -static int tx4939_nvram_read(void *priv, unsigned int pos, void *val, - size_t bytes) -{ - struct tx4939rtc_plat_data *pdata = priv; - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - u8 *buf = val; - - spin_lock_irq(&pdata->lock); - for (; bytes; bytes--) { - __raw_writel(pos++, &rtcreg->adr); - *buf++ = __raw_readl(&rtcreg->dat); - } - spin_unlock_irq(&pdata->lock); - return 0; -} - -static int tx4939_nvram_write(void *priv, unsigned int pos, void *val, - size_t bytes) -{ - struct tx4939rtc_plat_data *pdata = priv; - struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg; - u8 *buf = val; - - spin_lock_irq(&pdata->lock); - for (; bytes; bytes--) { - __raw_writel(pos++, &rtcreg->adr); - __raw_writel(*buf++, &rtcreg->dat); - } - spin_unlock_irq(&pdata->lock); - return 0; -} - -static int __init tx4939_rtc_probe(struct platform_device *pdev) -{ - struct rtc_device *rtc; - struct tx4939rtc_plat_data *pdata; - int irq, ret; - struct nvmem_config nvmem_cfg = { - .name = "tx4939_nvram", - .size = TX4939_RTC_REG_RAMSIZE, - .reg_read = tx4939_nvram_read, - .reg_write = tx4939_nvram_write, - }; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return -ENODEV; - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - platform_set_drvdata(pdev, pdata); - - pdata->rtcreg = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(pdata->rtcreg)) - return PTR_ERR(pdata->rtcreg); - - spin_lock_init(&pdata->lock); - tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP); - if (devm_request_irq(&pdev->dev, irq, tx4939_rtc_interrupt, - 0, pdev->name, &pdev->dev) < 0) - return -EBUSY; - rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); - - rtc->ops = &tx4939_rtc_ops; - rtc->nvram_old_abi = true; - rtc->range_max = U32_MAX; - - pdata->rtc = rtc; - - nvmem_cfg.priv = pdata; - ret = rtc_nvmem_register(rtc, &nvmem_cfg); - if (ret) - return ret; - - return rtc_register_device(rtc); -} - -static int __exit tx4939_rtc_remove(struct platform_device *pdev) -{ - struct tx4939rtc_plat_data *pdata = platform_get_drvdata(pdev); - - spin_lock_irq(&pdata->lock); - tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP); - spin_unlock_irq(&pdata->lock); - return 0; -} - -static struct platform_driver tx4939_rtc_driver = { - .remove = __exit_p(tx4939_rtc_remove), - .driver = { - .name = "tx4939rtc", - }, -}; - -module_platform_driver_probe(tx4939_rtc_driver, tx4939_rtc_probe); - -MODULE_AUTHOR("Atsushi Nemoto <[email protected]>"); -MODULE_DESCRIPTION("TX4939 internal RTC driver"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:tx4939rtc"); diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c index c3671043ace7..5a9f9ad86d32 100644 --- a/drivers/rtc/rtc-vr41xx.c +++ b/drivers/rtc/rtc-vr41xx.c @@ -335,7 +335,7 @@ static int rtc_probe(struct platform_device *pdev) dev_info(&pdev->dev, "Real Time Clock of NEC VR4100 series\n"); - retval = rtc_register_device(rtc); + retval = devm_rtc_register_device(rtc); if (retval) goto err_iounmap_all; diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c index e2588625025f..197b649cd629 100644 --- a/drivers/rtc/rtc-vt8500.c +++ b/drivers/rtc/rtc-vt8500.c @@ -232,7 +232,7 @@ static int vt8500_rtc_probe(struct platform_device *pdev) return ret; } - return rtc_register_device(vt8500_rtc->rtc); + return devm_rtc_register_device(vt8500_rtc->rtc); } static int vt8500_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-wilco-ec.c b/drivers/rtc/rtc-wilco-ec.c index ff46066a68a4..2a205a646452 100644 --- a/drivers/rtc/rtc-wilco-ec.c +++ b/drivers/rtc/rtc-wilco-ec.c @@ -176,7 +176,7 @@ static int wilco_ec_rtc_probe(struct platform_device *pdev) rtc->range_max = RTC_TIMESTAMP_END_2099; rtc->owner = THIS_MODULE; - return rtc_register_device(rtc); + return devm_rtc_register_device(rtc); } static struct platform_driver wilco_ec_rtc_driver = { diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c index ccef887d2690..640833e21057 100644 --- a/drivers/rtc/rtc-wm831x.c +++ b/drivers/rtc/rtc-wm831x.c @@ -429,7 +429,7 @@ static int wm831x_rtc_probe(struct platform_device *pdev) wm831x_rtc->rtc->ops = &wm831x_rtc_ops; wm831x_rtc->rtc->range_max = U32_MAX; - ret = rtc_register_device(wm831x_rtc->rtc); + ret = devm_rtc_register_device(wm831x_rtc->rtc); if (ret) return ret; diff --git a/drivers/rtc/rtc-xgene.c b/drivers/rtc/rtc-xgene.c index 96db441f92b3..cf68a9b1c9eb 100644 --- a/drivers/rtc/rtc-xgene.c +++ b/drivers/rtc/rtc-xgene.c @@ -185,7 +185,7 @@ static int xgene_rtc_probe(struct platform_device *pdev) pdata->rtc->ops = &xgene_rtc_ops; pdata->rtc->range_max = U32_MAX; - ret = rtc_register_device(pdata->rtc); + ret = devm_rtc_register_device(pdata->rtc); if (ret) { clk_disable_unprepare(pdata->clk); return ret; diff --git a/drivers/rtc/rtc-zynqmp.c b/drivers/rtc/rtc-zynqmp.c index 4b1077e2f826..f440bb52be92 100644 --- a/drivers/rtc/rtc-zynqmp.c +++ b/drivers/rtc/rtc-zynqmp.c @@ -264,7 +264,7 @@ static int xlnx_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 1); - return rtc_register_device(xrtcdev->rtc); + return devm_rtc_register_device(xrtcdev->rtc); } static int xlnx_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c index 950fac0d41ff..8a957d31a1a4 100644 --- a/drivers/rtc/sysfs.c +++ b/drivers/rtc/sysfs.c @@ -317,8 +317,6 @@ int rtc_add_groups(struct rtc_device *rtc, const struct attribute_group **grps) size_t old_cnt = 0, add_cnt = 0, new_cnt; const struct attribute_group **groups, **old; - if (rtc->registered) - return -EINVAL; if (!grps) return -EINVAL; diff --git a/drivers/rtc/systohc.c b/drivers/rtc/systohc.c deleted file mode 100644 index 8b70f0520e13..000000000000 --- a/drivers/rtc/systohc.c +++ /dev/null @@ -1,61 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/rtc.h> -#include <linux/time.h> - -/** - * rtc_set_ntp_time - Save NTP synchronized time to the RTC - * @now: Current time of day - * @target_nsec: pointer for desired now->tv_nsec value - * - * Replacement for the NTP platform function update_persistent_clock64 - * that stores time for later retrieval by rtc_hctosys. - * - * Returns 0 on successful RTC update, -ENODEV if a RTC update is not - * possible at all, and various other -errno for specific temporary failure - * cases. - * - * -EPROTO is returned if now.tv_nsec is not close enough to *target_nsec. - * - * If temporary failure is indicated the caller should try again 'soon' - */ -int rtc_set_ntp_time(struct timespec64 now, unsigned long *target_nsec) -{ - struct rtc_device *rtc; - struct rtc_time tm; - struct timespec64 to_set; - int err = -ENODEV; - bool ok; - - rtc = rtc_class_open(CONFIG_RTC_SYSTOHC_DEVICE); - if (!rtc) - goto out_err; - - if (!rtc->ops || !rtc->ops->set_time) - goto out_close; - - /* Compute the value of tv_nsec we require the caller to supply in - * now.tv_nsec. This is the value such that (now + - * set_offset_nsec).tv_nsec == 0. - */ - set_normalized_timespec64(&to_set, 0, -rtc->set_offset_nsec); - *target_nsec = to_set.tv_nsec; - - /* The ntp code must call this with the correct value in tv_nsec, if - * it does not we update target_nsec and return EPROTO to make the ntp - * code try again later. - */ - ok = rtc_tv_nsec_ok(rtc->set_offset_nsec, &to_set, &now); - if (!ok) { - err = -EPROTO; - goto out_close; - } - - rtc_time64_to_tm(to_set.tv_sec, &tm); - - err = rtc_set_time(rtc, &tm); - -out_close: - rtc_class_close(rtc); -out_err: - return err; -} |