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2024-09-25Merge tag 'rtc-6.12' of ↵Linus Torvalds1-0/+16
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "More conversions of DT bindings to yaml. There is one new driver, for the DFRobot SD2405AL and support for important features of the stm32 RTC. Summary: New driver: - DFRobot SD2405AL Drivers: - stm32: add alarm A out and LSCO support - sun6i: disable automatic clock input switching - m48t59: set range" * tag 'rtc-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: rc5t619: use proper module tables rtc: m48t59: set range dt-bindings: rtc: microcrystal,rv3028: add #clock-cells property rtc: m48t59: Remove division condition with direct comparison rtc: at91sam9: fix OF node leak in probe() error path rtc: sun6i: disable automatic clock input switching dt-bindings: rtc: Drop non-trivial duplicate compatibles dt-bindings: vendor-prefixes: Add DFRobot. dt-bindings: rtc: Add support for SD2405AL. rtc: Add driver for SD2405AL rtc: s35390a: Drop vendorless compatible string from match table rtc: twl: convert comma to semicolon dt-bindings: rtc: sprd,sc2731-rtc: convert to YAML rtc: stm32: add alarm A out feature rtc: stm32: add Low Speed Clock Output (LSCO) support rtc: stm32: add pinctrl and pinmux interfaces dt-bindings: rtc: stm32: describe pinmux nodes
2024-09-12rtc: Add driver for SD2405ALTóth János1-0/+10
Add support for the DFRobot SD2405AL I2C RTC Module. Datasheet: https://image.dfrobot.com/image/data/TOY0021/SD2405AL%20datasheet%20(Angelo%20v0.1).pdf Product: https://www.dfrobot.com/product-1600.html To instantiate (assuming device is connected to I2C-1) as root: echo sd2405al 0x32 > /sys/bus/i2c/devices/i2c-1/new_device as user: echo 'sd2405al 0x32' | sudo tee /sys/class/i2c-adapter/i2c-1/new_device The driver is tested with: + hwclock + tools/testing/selftests/rtc/setdate + tools/testing/selftests/rtc/rtctest Reviewed-by: Csókás Bence <[email protected]> Signed-off-by: Tóth János <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-08-28rtc: support i.MX95 BBM RTCPeng Fan1-0/+11
The BBM module provides RTC feature. To i.MX95, this module is managed by System Manager and exported System Control Management Interface(SCMI). Linux could use i.MX SCMI BBM Extension protocol to use RTC feature. This driver is to use SCMI interface to get/set RTC. Reviewed-by: Cristian Marussi <[email protected]> Signed-off-by: Peng Fan <[email protected]> Message-Id: <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Signed-off-by: Sudeep Holla <[email protected]>
2024-08-14rtc: stm32: add Low Speed Clock Output (LSCO) supportValentin Caron1-0/+1
RTC is able to output on a pin the "LSE" internal clock. STM32 RTC is now registered as a clock provider. It provides rtc_lsco clock, that means RTC_LSCO is output on either RTC_OUT1 or RTC_OUT2_RMP, depending on pinmux DT property. The clock is marked as CLK_IGNORE_UNUSED and CLK_IS_CRITICAL because RTC_LSCO can be early required by devices needed it to init. Add LSCO in pinmux functions. Add "stm32_rtc_clean_outs" to disable LSCO. As RTC is part of "backup" power domain, it is not reset during shutdown or reboot. So force LSCO disable at probe. Co-developed-by: Amelie Delaunay <[email protected]> Signed-off-by: Amelie Delaunay <[email protected]> Signed-off-by: Valentin Caron <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-08-14rtc: stm32: add pinctrl and pinmux interfacesValentin Caron1-0/+5
STM32 RTC is capable to handle 3 specific pins of the soc. "out1, out2 and out2_rmp". To handle this, we use pinctrl framework. There is a single pin per group. Signed-off-by: Valentin Caron <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-04-17rtc: Add driver for Epson RX8111Waqar Hameed1-0/+10
Epson RX8111 is an RTC with alarm, timer and timestamp functionality. Add a basic driver with support for only reading/writing time (for now). Signed-off-by: Waqar Hameed <[email protected]> Link: https://lore.kernel.org/r/0c3e1b03f276da47b26ac50f5d0ddf5c67aabe5c.1700491765.git.waqar.hameed@axis.com Signed-off-by: Alexandre Belloni <[email protected]>
2024-02-29rtc: mt6397: select IRQ_DOMAIN instead of depending on itRandy Dunlap1-1/+2
IRQ_DOMAIN is a hidden (not user visible) symbol. Users cannot set it directly thru "make *config", so drivers should select it instead of depending on it if they need it. Relying on it being set for a dependency is risky. Consistently using "select" or "depends on" can also help reduce Kconfig circular dependency issues. Therefore, change the use of "depends on" for IRQ_DOMAIN to "select" for RTC_DRV_MT6397. Fixes: 04d3ba70a3c9 ("rtc: mt6397: add IRQ domain dependency") Cc: Arnd Bergmann <[email protected]> Cc: Eddie Huang <[email protected]> Cc: Sean Wang <[email protected]> Cc: Matthias Brugger <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Alessandro Zummo <[email protected]> Cc: Alexandre Belloni <[email protected]> Cc: [email protected] Cc: Marc Zyngier <[email protected]> Cc: Philipp Zabel <[email protected]> Cc: Peter Rosin <[email protected]> Reviewed-by: AngeloGioacchino Del Regno <[email protected]> Signed-off-by: Randy Dunlap <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-01-15rtc: max31335: add driver supportAntoniu Miclaus1-0/+13
RTC driver for MAX31335 ±2ppm Automotive Real-Time Clock with Integrated MEMS Resonator. Reviewed-by: Guenter Roeck <[email protected]> Signed-off-by: Antoniu Miclaus <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-01-08rtc: lpc24xx: add missing dependencyAntoniu Miclaus1-0/+1
The driver depends on COMMON_CLK. Add the dependency in Kconfig. Signed-off-by: Antoniu Miclaus <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2024-01-08rtc: tps6594: Add driver for TPS6594 RTCEsteban Blanc1-0/+12
TPS6594 PMIC is a MFD. This patch adds support for the RTC found inside TPS6594 family of PMIC. Alarm is also supported. Signed-off-by: Esteban Blanc <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Tested-by: Thomas Richard <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-12-17rtc: Add driver for Nuvoton ma35d1 rtc controllerJacky Huang1-0/+11
The ma35d1 rtc controller provides real-time and calendar messaging capabilities. It supports programmable time tick and alarm match interrupts. The time and calendar messages are expressed in BCD format. This driver supports the built-in rtc controller of the ma35d1. It enables setting and reading the rtc time and configuring and reading the rtc alarm. Signed-off-by: Jacky Huang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-10-16rtc: Add support for the SSD202D RTCRomain Perier1-0/+11
Newer SigmaStar SSD202D SoCs contain a Real Time Clock, capable of running while the system is sleeping (battery powered), this is not the case with the other RTC on older SoCs. This adds basic support for this RTC block. Signed-off-by: Romain Perier <[email protected]> Co-developed-by: Daniel Palmer <[email protected]> Signed-off-by: Daniel Palmer <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-10-13rtc: imxdi: Soften dependencies for improved compile coverageUwe Kleine-König1-1/+1
The driver compiles fine on x86_64, so soften the dependencies to ARCH_MXC || COMPILE_TEST. Signed-off-by: Uwe Kleine-König <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-07-27rtc: bq4802: add sparc dependencyArnd Bergmann1-0/+1
The added HAS_IOPORT dependency might not actually be necessary as Geert points out, but the driver is also only used on one architecture. Sparc is also a special case here since it converts port numbers into virtual addresses rather than having them mapped into a particular part of the __iomem address space, so the difference is actually not important here. Add a dependency on sparc, but allow compile-testing otherwise, to make this clearer without anyone having to spend much time modernizing the driver beyond that. Reported-by: Geert Uytterhoeven <[email protected]> Cc: David S. Miller <[email protected]> Link: https://lore.kernel.org/all/CAMuHMdWEx0F=fNei4Bz_JPkuvoaN-+zk08h0i8KnSi_VjO615g@mail.gmail.com/ Signed-off-by: Arnd Bergmann <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-07-27rtc: pcf2127: add support for PCF2131 RTCHugo Villeneuve1-2/+2
This RTC is very similar in functionality to the PCF2127/29. Basically it: -supports two new control registers at offsets 4 and 5 -supports a new reset register (not implemented in this driver) -supports 4 tamper detection functions instead of 1 -has no nvmem (like the PCF2129) -has two output interrupt pins Because of that, most of the register addresses are very different, although they still follow the same layout. For example, the tamper registers have a different base address, but the offsets are all the same. Signed-off-by: Hugo Villeneuve <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-07-03Merge tag 'rtc-6.5' of ↵Linus Torvalds1-11/+16
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "The isl1208 dirver was reworked tobe able to work as part of an MFD. All the Loongson chips are now supported through a new driver, the old one is removed. Summary: Subsystem: - Switch i2c drivers back to use .probe() - Constify pointers to hwmon_channel_info New driver: - Loongson on chip RTC, replacing the Loongson 1 only driver Drivers: - isl1208: cleanup and support for RAA215300 - st-lpc: cleanups - stm32: fix wakeup" * tag 'rtc-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (21 commits) rtc: Add rtc driver for the Loongson family chips rtc: Remove the Loongson-1 RTC driver dt-bindings: rtc: Split loongson,ls2x-rtc into SoC-based compatibles rtc: rv3028: make rv3028 probeable from userspace rtc: isl1208: Add support for the built-in RTC on the PMIC RAA215300 rtc: isl1208: Add isl1208_set_xtoscb() rtc: isl1208: Drop enum isl1208_id and split isl1208_configs[] rtc: isl1208: Make similar I2C and DT-based matching table rtc: isl1208: Drop name variable dt-bindings: rtc: isil,isl1208: Document clock and clock-names properties dt-bindings: rtc: isl1208: Convert to json-schema rtc: st-lpc: Simplify clk handling in st_rtc_probe() rtc: st-lpc: Release some resources in st_rtc_probe() in case of error rtc: stm32: remove dedicated wakeup management dt-bindings: rtc: restrict node name suffixes rtc: add HAS_IOPORT dependencies rtc: Switch i2c drivers back to use .probe() rtc: rv3032: constify pointers to hwmon_channel_info rtc: isl12022: constify pointers to hwmon_channel_info rtc: ds3232: constify pointers to hwmon_channel_info ...
2023-06-26rtc: Add rtc driver for the Loongson family chipsBinbin Zhou1-0/+13
The Loongson family chips use an on-chip counter 0 (Time Of Year counter) as the RTC. We will refer to them as rtc-loongson. Cc: Keguang Zhang <[email protected]> Cc: Yang Ling <[email protected]> Cc: Jiaxun Yang <[email protected]> Signed-off-by: Binbin Zhou <[email protected]> Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: WANG Xuerui <[email protected]> Reviewed-by: Keguang Zhang <[email protected]> Tested-by: Keguang Zhang <[email protected]> Reviewed-by: Jiaxun Yang <[email protected]> Tested-by: Jiaxun Yang <[email protected]> # LS7A Link: https://lore.kernel.org/r/0c5171156390f614d72f36ceb04a20f432ca639e.1685693501.git.zhoubinbin@loongson.cn Signed-off-by: Alexandre Belloni <[email protected]>
2023-06-26rtc: Remove the Loongson-1 RTC driverBinbin Zhou1-10/+0
Remove the ls1x-rtc driver as it is obsolete. We will continue to support the ls1x RTC in the upcoming Loongson unified RTC driver rtc-loongson. Cc: Keguang Zhang <[email protected]> Cc: zhao zhang <[email protected]> Cc: Yang Ling <[email protected]> Signed-off-by: Binbin Zhou <[email protected]> Acked-by: Keguang Zhang <[email protected]> Link: https://lore.kernel.org/r/c38c666015a162d7031b20a48209ce577bab62cd.1685693501.git.zhoubinbin@loongson.cn Signed-off-by: Alexandre Belloni <[email protected]>
2023-06-06rtc: add HAS_IOPORT dependenciesNiklas Schnelle1-1/+3
In a future patch HAS_IOPORT=n will result in inb()/outb() and friends not being declared. We thus need to add HAS_IOPORT as dependency for those drivers using them. Co-developed-by: Arnd Bergmann <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Niklas Schnelle <[email protected]> Acked-by: Maciej W. Rozycki <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-05-15mfd: rk808: Split into core and i2cSebastian Reichel1-1/+1
Split rk808 into a core and an i2c part in preparation for SPI support. Acked-by: Alexandre Belloni <[email protected]> # for RTC Tested-by: Diederik de Haas <[email protected]> # Rock64, Quartz64 Model A + B Tested-by: Vincent Legoll <[email protected]> # Pine64 QuartzPro64 Signed-off-by: Sebastian Reichel <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Lee Jones <[email protected]>
2023-03-17rtc: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIREConor Dooley1-1/+1
As part of converting RISC-V SOC_FOO symbols to ARCH_FOO to match the use of such symbols on other architectures, convert the Microchip FPGA RTC driver to use the new symbol. Signed-off-by: Conor Dooley <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-03-03Merge tag 'rtc-6.3' of ↵Linus Torvalds1-1/+13
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "A few drivers got some nice cleanups and a new driver are making the bulk of the changes. Subsystem: - allow rtc_read_alarm without read_alarm callback New driver: - NXP BBNSM module RTC Drivers: - use IRQ flags from fwnode when available - abx80x: nvmem support - brcmstb-waketimer: add non-wake alarm support - ingenic: provide CLK32K clock - isl12022: cleanups - moxart: switch to using gpiod API - pcf85363: allow setting quartz load - pm8xxx: cleanups and support for setting time - rv3028, rv3032: add ACPI support" * tag 'rtc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (64 commits) rtc: pm8xxx: add support for nvmem offset dt-bindings: rtc: qcom-pm8xxx: add nvmem-cell offset rtc: abx80x: Add nvmem support rtc: rx6110: Remove unused of_gpio,h rtc: efi: Avoid spamming the log on RTC read failure rtc: isl12022: sort header inclusion alphabetically rtc: isl12022: Join string literals back rtc: isl12022: Drop unneeded OF guards and of_match_ptr() rtc: isl12022: Explicitly use __le16 type for ISL12022_REG_TEMP_L rtc: isl12022: Get rid of unneeded private struct isl12022 rtc: pcf85363: add support for the quartz-load-femtofarads property dt-bindings: rtc: nxp,pcf8563: move pcf85263/pcf85363 to a dedicated binding rtc: allow rtc_read_alarm without read_alarm callback rtc: rv3032: add ACPI support rtc: rv3028: add ACPI support rtc: bbnsm: Add the bbnsm rtc support rtc: jz4740: Register clock provider for the CLK32K pin rtc: jz4740: Use dev_err_probe() rtc: jz4740: Use readl_poll_timeout dt-bindings: rtc: Add #clock-cells property ...
2023-02-22rtc: bbnsm: Add the bbnsm rtc supportJacky Bai1-0/+12
The BBNSM module includes a real time counter with alarm. Add a RTC driver for this function. Signed-off-by: Jacky Bai <[email protected]> Reviewed-by: Peng Fan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-02-09rtc: jz4740: Register clock provider for the CLK32K pinPaul Cercueil1-1/+1
On JZ4770 and JZ4780, the CLK32K pin is configurable. By default, it is configured as a GPIO in input mode, and its value can be read through GPIO PD14. With this change, clients can now request the 32 kHz clock on the CLK32K pin, through Device Tree. This clock is simply a pass-through of the input oscillator's clock with enable/disable operations. This will permit the WiFi/Bluetooth chip to work on the MIPS CI20 board, which does source one of its clocks from the CLK32K pin. Signed-off-by: Paul Cercueil <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2023-02-01rtc: remove v3020 driverArnd Bergmann1-9/+0
The v3020 RTC driver was exclusively used by the now removed cm-x300.c machine. Cc: Alessandro Zummo <[email protected]> Cc: Alexandre Belloni <[email protected]> Cc: [email protected] Cc: [email protected] Acked-by: Robert Jarzmik <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2023-01-16ARM: s3c: remove s3c24xx specific hacksArnd Bergmann1-6/+2
A number of device drivers reference CONFIG_ARM_S3C24XX_CPUFREQ or similar symbols that are no longer available with the platform gone, though the drivers themselves are still used on newer platforms, so remove these hacks. Acked-by: Greg Kroah-Hartman <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Jonathan Cameron <[email protected]> Acked-by: Daniel Lezcano <[email protected]> Acked-by: Miquel Raynal <[email protected]> Acked-by: Ulf Hansson <[email protected]> Acked-by: Stephen Boyd <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2022-12-21Merge tag 'mfd-next-6.2' of ↵Linus Torvalds1-6/+0
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers: - Add support for Ampere Computing SMpro - Add support for TI TPS65219 PMIC New Functionality: - Add support for multiple devices of the same type; rk808 Fix-ups: - Convert a bunch of I2C class drivers over to .probe_new() - Remove superfluous includes; mc13xxx-*, palmas, timberdale - Use correct includes for GPIO handling; madera-core - Convert to GPIOD; twl6040 - Remove unused platform data handling; twl6040 - Device Tree changes; many - Remove unused drivers; dm355evm_msp, davinci_voicecodec, htc-i2cpld - Add support for modules; palmas - Enable COMPILE_TEST support; intel_soc_pmic* - Trivial: spelling / whitespace fixes; mc13xxx-spi - Replace old PM helpers with new ones; many - Convert deprecated mask_invert usage to unmask_base; many - Use devm_*() calls; qcom_rpm - MAINTAINER fix-ups - Make use of improved / replaced APIs; palmas, fsl-imx25-tsadc, stm32-lptimer, qcom_rpm, rohm-* Bug Fixes: - Add bounds / error checking; mt6360-core - No sleeping inside critical sections; axp20x - Fix missing dependencies; ROHM_BD957XMUF - Repair error paths; qcom-pm8008" * tag 'mfd-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (161 commits) dt-bindings: mfd: da9062: Correct file name for watchdog mfd: pm8008: Fix return value check in pm8008_probe() mfd: rohm: Use dev_err_probe() mfd: Drop obsolete dependencies on COMPILE_TEST dt-bindings: mfd: da9062: Move IRQ to optional properties mfd: qcom_rpm: Use devm_of_platform_populate() to simplify code mfd: qcom_rpm: Fix an error handling path in qcom_rpm_probe() mfd: stm32-lptimer: Use devm_platform_get_and_ioremap_resource() mfd: rohm-bd9576: Convert to i2c's .probe_new() mfd: fsl-imx25-tsadc: Use devm_platform_get_and_ioremap_resource() dt-bindings: Fix maintainer email for a few ROHM ICs mfd: palmas: Use device_get_match_data() to simplify the code Input: Add tps65219 interrupt driven powerbutton mfd: tps65219: Add driver for TI TPS65219 PMIC mfd: bd957x: Fix Kconfig dependency on REGMAP_IRQ mfd: wcd934x: Convert irq chip to config regs mfd: tps65090: Replace irqchip mask_invert with unmask_base mfd: sun4i-gpadc: Replace irqchip mask_invert with unmask_base mfd: stpmic1: Fix swapped mask/unmask in irq chip mfd: sprd-sc27xx-spi: Replace irqchip mask_invert with unmask_base ...
2022-12-15rtc: isl12026: drop obsolete dependency on COMPILE_TESTJean Delvare1-1/+1
Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it is possible to test-build any driver which depends on OF on any architecture by explicitly selecting OF. Therefore depending on COMPILE_TEST as an alternative is no longer needed. It is actually better to always build such drivers with OF enabled, so that the test builds are closer to how each driver will actually be built on its intended target. Building them without OF may not test much as the compiler will optimize out potentially large parts of the code. In the worst case, this could even pop false positive warnings. Dropping COMPILE_TEST here improves the quality of our testing and avoids wasting time on non-existent issues. Signed-off-by: Jean Delvare <[email protected]> Cc: Alessandro Zummo <[email protected]> Cc: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2022-12-07mfd: Remove dm355evm_msp driverArnd Bergmann1-6/+0
The DaVinci DM355EVM platform is gone after the removal of all unused board files, so the MTD device along with its sub-devices can be removed as well. Signed-off-by: Arnd Bergmann <[email protected]> Acked-by: Bartosz Golaszewski <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-11-15rtc: remove davinci rtc driverArnd Bergmann1-10/+0
The Davinci dm365 SoC support was removed, so the rtc driver has no remaining users. Signed-off-by: Arnd Bergmann <[email protected]> Acked-by: Bartosz Golaszewski <[email protected]> Acked-by: Marc Zyngier <[email protected]> Acked-by: Kevin Hilman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2022-10-13rtc: isl12022: switch to using regmap APIRasmus Villemoes1-0/+1
The regmap abstraction allows us to avoid the private i2c transfer helpers, and also offers some nice utility functions such as the regmap_update_bits family. While at it, simplify the code even more by not keeping track of ->write_enabled: rtc_set_time is not a hot path, so one extra i2c read doesn't hurt (regmap_update_bits elides the write when the bits are already as desired). Signed-off-by: Rasmus Villemoes <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Alexandre Belloni <[email protected]>
2022-07-26rtc: Add NCT3018Y real time clock driverMia Lin1-0/+10
Add real time clock support for NCT3018Y. Signed-off-by: Mia Lin <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-07-26rtc: vr41xx: remove driverThomas Bogendoerfer1-10/+0
Commit d3164e2f3b0a ("MIPS: Remove VR41xx support") removed support for MIPS VR41xx platform, so remove exclusive drivers for this platform, too. Signed-off-by: Thomas Bogendoerfer <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-06-24rtc: Introduce ti-k3-rtcNishanth Menon1-0/+11
Introduce support for Texas Instruments Real Time Clock controller on newer K3 family of SoCs such as AM62x. The hardware module that is being supported is the "digital only" version which doesn't have capability of external wakeup sources and external power backup. However, for many practical applications, this should suffice as RTC is operational across low power sequences. The hardware block by itself is split into two distinct domains internally to further reduce the power consumption with the actual counter block and comparators clocked off a 32k clock source (which based on SoC integration can be sourced by an external crystal) and an register interface block which is driven by the bus clock. While optimal from power perspective, it does create some complicated synchronizations and sequences that one must be wary of in the driver handling. Acked-by: Andrew Davis <[email protected]> Signed-off-by: Nishanth Menon <[email protected]> Tested-by: Georgi Vlaev <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-06-24rtc: Add driver for Microchip PolarFire SoCConor Dooley1-0/+10
Add support for the built-in RTC on Microchip PolarFire SoC Co-Developed-by: Daire McNamara <[email protected]> Signed-off-by: Daire McNamara <[email protected]> Signed-off-by: Conor Dooley <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-05-17rtc: rzn1: Add new RTC driverMichel Pollet1-0/+7
Add a basic RTC driver for the RZ/N1. Signed-off-by: Michel Pollet <[email protected]> Co-developed-by: Miquel Raynal <[email protected]> Signed-off-by: Miquel Raynal <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-04-01Merge tag 'rtc-5.18' of ↵Linus Torvalds1-0/+10
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "The bulk of the patches are about replacing the uie_unsupported struct rtc_device member by a feature bit. Subsystem: - remove uie_unsupported, all users have been converted to clear RTC_FEATURE_UPDATE_INTERRUPT and provide a reason - RTCs with an alarm with a resolution of a minute are now letting the core handle rounding down the alarm time - fix use-after-free on device removal New driver: - OP-TEE RTC PTA Drivers: - sun6i: Add H616 support - cmos: Fix the AltCentury for AMD platforms - spear: set range" * tag 'rtc-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (56 commits) rtc: check if __rtc_read_time was successful rtc: gamecube: Fix refcount leak in gamecube_rtc_read_offset_from_sram rtc: mc146818-lib: Fix the AltCentury for AMD platforms rtc: optee: add RTC driver for OP-TEE RTC PTA rtc: pm8xxx: Return -ENODEV if set_time disallowed rtc: pm8xxx: Attach wake irq to device clk: sunxi-ng: sun6i-rtc: include clk/sunxi-ng.h rtc: remove uie_unsupported rtc: xgene: stop using uie_unsupported rtc: hym8563: switch to RTC_FEATURE_UPDATE_INTERRUPT rtc: hym8563: let the core handle the alarm resolution rtc: hym8563: switch to devm_rtc_allocate_device rtc: efi: switch to RTC_FEATURE_UPDATE_INTERRUPT rtc: efi: switch to devm_rtc_allocate_device rtc: add new RTC_FEATURE_ALARM_WAKEUP_ONLY feature rtc: spear: fix spear_rtc_read_time rtc: spear: drop uie_unsupported rtc: spear: set range rtc: spear: switch to devm_rtc_allocate_device rtc: pcf8563: switch to RTC_FEATURE_UPDATE_INTERRUPT ...
2022-03-25rtc: optee: add RTC driver for OP-TEE RTC PTAClément Léger1-0/+10
This drivers allows to communicate with a RTC PTA handled by OP-TEE [1]. This PTA allows to query RTC information, set/get time and set/get offset depending on the supported features. [1] https://github.com/OP-TEE/optee_os/pull/5179 Signed-off-by: Clément Léger <[email protected]> Reviewed-by: Jens Wiklander <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-03-07rtc: max77686: Add MAX77714 supportLuca Ceresoli1-1/+1
The RTC included in the MAX77714 PMIC is very similar to the one in the MAX77686. Reuse the rtc-max77686.c driver with the minimum required changes for the MAX77714 RTC. Signed-off-by: Luca Ceresoli <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Signed-off-by: Lee Jones <[email protected]>
2022-01-05rtc: Add driver for RTC in Sunplus SP7021Vincent Shih1-0/+13
Add driver for RTC in Sunplus SP7021 Signed-off-by: Vincent Shih <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-12-16rtc: gamecube: Add a RTC driver for the GameCube, Wii and Wii UEmmanuel Gil Peyrot1-0/+11
These three consoles share a device, the MX23L4005, which contains a clock and 64 bytes of SRAM storage, and is exposed on the EXI bus (similar to SPI) on channel 0, device 1. This driver allows it to be used as a Linux RTC device, where time can be read and set. The hardware also exposes two timers, one which shuts down the console and one which powers it on, but these aren’t supported currently. On the Wii U, the counter bias is stored in a XML file, /config/rtc.xml, encrypted in the SLC (eMMC storage), using a proprietary filesystem. In order to avoid having to implement all that, this driver assumes a bootloader will parse this XML file and write the bias into the SRAM, at the same location the other two consoles have it. Signed-off-by: Emmanuel Gil Peyrot <[email protected]> Acked-by: Michael Ellerman <[email protected]> (powerpc) Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-11-12Merge tag 'rtc-5.16' of ↵Linus Torvalds1-8/+11
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "This includes new ioctls to get and set parameters and in particular the backup switch mode that is needed for some RTCs to actually enable the backup voltage (and have a useful RTC). The same interface can also be used to get the actual features supported by the RTC so userspace has a better way than trying and failing. Summary: Subsystem: - Add new ioctl to get and set extra RTC parameters, this includes backup switch mode - Expose available features to userspace, in particular, when alarmas have a resolution of one minute instead of a second. - Let the core handle those alarms with a minute resolution New driver: - MSTAR MSC313 RTC Drivers: - Add SPI ID table where necessary - Add BSM support for rv3028, rv3032 and pcf8523 - s3c: set RTC range - rx8025: set range, implement .set_offset and .read_offset" * tag 'rtc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits) rtc: rx8025: use .set_offset/.read_offset rtc: rx8025: use rtc_add_group rtc: rx8025: clear RTC_FEATURE_ALARM when alarm are not supported rtc: rx8025: set range rtc: rx8025: let the core handle the alarm resolution rtc: rx8025: switch to devm_rtc_allocate_device rtc: ab8500: let the core handle the alarm resolution rtc: ab-eoz9: support UIE when available rtc: ab-eoz9: use RTC_FEATURE_UPDATE_INTERRUPT rtc: rv3032: let the core handle the alarm resolution rtc: s35390a: let the core handle the alarm resolution rtc: handle alarms with a minute resolution rtc: pcf85063: silence cppcheck warning rtc: rv8803: fix writing back ctrl in flag register rtc: s3c: Add time range rtc: s3c: Extract read/write IO into separate functions rtc: s3c: Remove usage of devm_rtc_device_register() rtc: tps80031: Remove driver rtc: sun6i: Allow probing without an early clock provider rtc: pcf8523: add BSM support ...
2021-10-23rtc: tps80031: Remove driverDmitry Osipenko1-8/+0
Driver was upstreamed in 2013 and never got a user, remove it. Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-10-18rtc: pcf8523: switch to regmapAlexandre Belloni1-0/+1
Use regmap to access the RTC registers, this is a huge reduction in code lines and generated code. Values on ARMv7: text data bss dec hex 5180 132 0 5312 14c0 before 3900 132 0 4032 fc0 after Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-10-17rtc: s3c: remove HAVE_S3C_RTC in favor of direct dependenciesWill McVicker1-8/+2
The config HAVE_S3C_RTC is not really needed since we can simply just add the dependencies directly to RTC_DRV_S3C. Also, one less config to keep track of! Signed-off-by: Will McVicker <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Krzysztof Kozlowski <[email protected]>
2021-09-26rtc: Add support for the MSTAR MSC313 RTCDaniel Palmer1-0/+10
This adds support for the RTC block on the Mstar MSC313e SoCs and newer. Signed-off-by: Daniel Palmer <[email protected]> Co-developed-by: Romain Perier <[email protected]> Signed-off-by: Romain Perier <[email protected]> Reviewed-by: Nobuhiro Iwamatsu <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-09-09rtc: rx8010: select REGMAP_I2CYu-Tung Chang1-0/+1
The rtc-rx8010 uses the I2C regmap but doesn't select it in Kconfig so depending on the configuration the build may fail. Fix it. Signed-off-by: Yu-Tung Chang <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-08-10rtc: move RTC_LIB_KUNIT_TEST to proper locationAlexandre Belloni1-10/+9
Move RTC_LIB_KUNIT_TEST under RTC_LIB so it is clear in the menu this is part of the RTC subsystem. Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-08-10rtc: Improve performance of rtc_time64_to_tm(). Add tests.Cassio Neri1-0/+10
The current implementation of rtc_time64_to_tm() contains unnecessary loops, branches and look-up tables. The new one uses an arithmetic-based algorithm appeared in [1] and is approximately 4.3 times faster (YMMV). The drawback is that the new code isn't intuitive and contains many 'magic numbers' (not unusual for this type of algorithm). However, [1] justifies all those numbers and, given this function's history, the code is unlikely to need much maintenance, if any at all. Add a KUnit test case that checks every day in a 160,000 years interval starting on 1970-01-01 against the expected result. Add a new config RTC_LIB_KUNIT_TEST symbol to give the option to run this test suite. [1] Neri, Schneider, "Euclidean Affine Functions and Applications to Calendar Algorithms". https://arxiv.org/abs/2102.06959 Signed-off-by: Cassio Neri <[email protected]> Reported-by: kernel test robot <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-06-20rtc: bd70528: Drop BD70528 supportMatti Vaittinen1-4/+3
The only known BD70528 use-cases are such that the PMIC is controlled from separate MCU which is not running Linux. I am not aware of any Linux driver users. Furthermore, it seems there is no demand for this IC. Let's ease the maintenance burden and drop the driver. We can always add it back if there is sudden need for it. Signed-off-by: Matti Vaittinen <[email protected]> Signed-off-by: Alexandre Belloni <[email protected]> Link: https://lore.kernel.org/r/[email protected]
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