diff options
Diffstat (limited to 'drivers/mmc')
48 files changed, 1562 insertions, 2378 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index c69afb5e264e..2c25271f8c41 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -2230,7 +2230,7 @@ static int mmc_blk_alloc_part(struct mmc_card *card, part_md->part_type = part_type; list_add(&part_md->part, &md->part); - string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2, + string_get_size((u64)get_capacity(part_md->disk), 512, STRING_UNITS_2, cap_str, sizeof(cap_str)); pr_info("%s: %s %s partition %u %s\n", part_md->disk->disk_name, mmc_card_id(card), @@ -2418,9 +2418,8 @@ static const struct mmc_fixup blk_fixups[] = END_FIXUP }; -static int mmc_blk_probe(struct device *dev) +static int mmc_blk_probe(struct mmc_card *card) { - struct mmc_card *card = mmc_dev_to_card(dev); struct mmc_blk_data *md, *part_md; char cap_str[10]; @@ -2436,7 +2435,7 @@ static int mmc_blk_probe(struct device *dev) if (IS_ERR(md)) return PTR_ERR(md); - string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2, + string_get_size((u64)get_capacity(md->disk), 512, STRING_UNITS_2, cap_str, sizeof(cap_str)); pr_info("%s: %s %s %s %s\n", md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), @@ -2445,7 +2444,7 @@ static int mmc_blk_probe(struct device *dev) if (mmc_blk_alloc_parts(card, md)) goto out; - dev_set_drvdata(dev, md); + dev_set_drvdata(&card->dev, md); if (mmc_add_disk(md)) goto out; @@ -2475,10 +2474,9 @@ static int mmc_blk_probe(struct device *dev) return 0; } -static int mmc_blk_remove(struct device *dev) +static void mmc_blk_remove(struct mmc_card *card) { - struct mmc_card *card = mmc_dev_to_card(dev); - struct mmc_blk_data *md = dev_get_drvdata(dev); + struct mmc_blk_data *md = dev_get_drvdata(&card->dev); mmc_blk_remove_parts(card, md); pm_runtime_get_sync(&card->dev); @@ -2489,15 +2487,13 @@ static int mmc_blk_remove(struct device *dev) pm_runtime_disable(&card->dev); pm_runtime_put_noidle(&card->dev); mmc_blk_remove_req(md); - dev_set_drvdata(dev, NULL); - - return 0; + dev_set_drvdata(&card->dev, NULL); } -static int _mmc_blk_suspend(struct device *dev) +static int _mmc_blk_suspend(struct mmc_card *card) { struct mmc_blk_data *part_md; - struct mmc_blk_data *md = dev_get_drvdata(dev); + struct mmc_blk_data *md = dev_get_drvdata(&card->dev); if (md) { mmc_queue_suspend(&md->queue); @@ -2508,15 +2504,17 @@ static int _mmc_blk_suspend(struct device *dev) return 0; } -static void mmc_blk_shutdown(struct device *dev) +static void mmc_blk_shutdown(struct mmc_card *card) { - _mmc_blk_suspend(dev); + _mmc_blk_suspend(card); } #ifdef CONFIG_PM_SLEEP static int mmc_blk_suspend(struct device *dev) { - return _mmc_blk_suspend(dev); + struct mmc_card *card = mmc_dev_to_card(dev); + + return _mmc_blk_suspend(card); } static int mmc_blk_resume(struct device *dev) @@ -2541,9 +2539,11 @@ static int mmc_blk_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(mmc_blk_pm_ops, mmc_blk_suspend, mmc_blk_resume); -static struct device_driver mmc_driver = { - .name = "mmcblk", - .pm = &mmc_blk_pm_ops, +static struct mmc_driver mmc_driver = { + .drv = { + .name = "mmcblk", + .pm = &mmc_blk_pm_ops, + }, .probe = mmc_blk_probe, .remove = mmc_blk_remove, .shutdown = mmc_blk_shutdown, diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index 7dac4695163b..53b741398b93 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -14,7 +14,6 @@ #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> #include <linux/slab.h> -#include <linux/device.h> #include <linux/scatterlist.h> #include <linux/swap.h> /* For nr_free_buffer_pages() */ @@ -2996,9 +2995,8 @@ err: return ret; } -static int mmc_test_probe(struct device *dev) +static int mmc_test_probe(struct mmc_card *card) { - struct mmc_card *card = mmc_dev_to_card(dev); int ret; if (!mmc_card_mmc(card) && !mmc_card_sd(card)) @@ -3013,22 +3011,20 @@ static int mmc_test_probe(struct device *dev) return 0; } -static int mmc_test_remove(struct device *dev) +static void mmc_test_remove(struct mmc_card *card) { - struct mmc_card *card = mmc_dev_to_card(dev); - mmc_test_free_result(card); mmc_test_free_dbgfs_file(card); - - return 0; } -static void mmc_test_shutdown(struct device *dev) +static void mmc_test_shutdown(struct mmc_card *card) { } -static struct device_driver mmc_driver = { - .name = "mmc_test", +static struct mmc_driver mmc_driver = { + .drv = { + .name = "mmc_test", + }, .probe = mmc_test_probe, .remove = mmc_test_remove, .shutdown = mmc_test_shutdown, diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index c5ef10065a4a..972ff844cf5a 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -26,6 +26,8 @@ #include "sdio_cis.h" #include "bus.h" +#define to_mmc_driver(d) container_of(d, struct mmc_driver, drv) + static ssize_t type_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -105,14 +107,33 @@ mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) return retval; } +static int mmc_bus_probe(struct device *dev) +{ + struct mmc_driver *drv = to_mmc_driver(dev->driver); + struct mmc_card *card = mmc_dev_to_card(dev); + + return drv->probe(card); +} + +static int mmc_bus_remove(struct device *dev) +{ + struct mmc_driver *drv = to_mmc_driver(dev->driver); + struct mmc_card *card = mmc_dev_to_card(dev); + + drv->remove(card); + + return 0; +} + static void mmc_bus_shutdown(struct device *dev) { + struct mmc_driver *drv = to_mmc_driver(dev->driver); struct mmc_card *card = mmc_dev_to_card(dev); struct mmc_host *host = card->host; int ret; - if (dev->driver && dev->driver->shutdown) - dev->driver->shutdown(dev); + if (dev->driver && drv->shutdown) + drv->shutdown(card); if (host->bus_ops->shutdown) { ret = host->bus_ops->shutdown(host); @@ -181,6 +202,8 @@ static struct bus_type mmc_bus_type = { .dev_groups = mmc_dev_groups, .match = mmc_bus_match, .uevent = mmc_bus_uevent, + .probe = mmc_bus_probe, + .remove = mmc_bus_remove, .shutdown = mmc_bus_shutdown, .pm = &mmc_bus_pm_ops, }; @@ -199,22 +222,24 @@ void mmc_unregister_bus(void) * mmc_register_driver - register a media driver * @drv: MMC media driver */ -int mmc_register_driver(struct device_driver *drv) +int mmc_register_driver(struct mmc_driver *drv) { - drv->bus = &mmc_bus_type; - return driver_register(drv); + drv->drv.bus = &mmc_bus_type; + return driver_register(&drv->drv); } + EXPORT_SYMBOL(mmc_register_driver); /** * mmc_unregister_driver - unregister a media driver * @drv: MMC media driver */ -void mmc_unregister_driver(struct device_driver *drv) +void mmc_unregister_driver(struct mmc_driver *drv) { - drv->bus = &mmc_bus_type; - driver_unregister(drv); + drv->drv.bus = &mmc_bus_type; + driver_unregister(&drv->drv); } + EXPORT_SYMBOL(mmc_unregister_driver); static void mmc_release_card(struct device *dev) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 23f10f72e5f3..c296bc098fe2 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -897,6 +897,7 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort) DECLARE_WAITQUEUE(wait, current); unsigned long flags; int stop; + bool pm = false; might_sleep(); @@ -916,15 +917,18 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort) host->claimed = 1; host->claimer = current; host->claim_cnt += 1; + if (host->claim_cnt == 1) + pm = true; } else wake_up(&host->wq); spin_unlock_irqrestore(&host->lock, flags); remove_wait_queue(&host->wq, &wait); - if (host->ops->enable && !stop && host->claim_cnt == 1) - host->ops->enable(host); + + if (pm) + pm_runtime_get_sync(mmc_dev(host)); + return stop; } - EXPORT_SYMBOL(__mmc_claim_host); /** @@ -940,9 +944,6 @@ void mmc_release_host(struct mmc_host *host) WARN_ON(!host->claimed); - if (host->ops->disable && host->claim_cnt == 1) - host->ops->disable(host); - spin_lock_irqsave(&host->lock, flags); if (--host->claim_cnt) { /* Release for nested claim */ @@ -952,6 +953,8 @@ void mmc_release_host(struct mmc_host *host) host->claimer = NULL; spin_unlock_irqrestore(&host->lock, flags); wake_up(&host->wq); + pm_runtime_mark_last_busy(mmc_dev(host)); + pm_runtime_put_autosuspend(mmc_dev(host)); } } EXPORT_SYMBOL(mmc_release_host); diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 1d41e8541f38..f36c76f8b232 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -11,6 +11,7 @@ */ #include <linux/err.h> +#include <linux/of.h> #include <linux/slab.h> #include <linux/stat.h> #include <linux/pm_runtime.h> @@ -336,6 +337,8 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) { int err = 0, idx; unsigned int part_size; + struct device_node *np; + bool broken_hpi = false; /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; @@ -349,6 +352,11 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) } } + np = mmc_of_find_child_device(card->host, 0); + if (np && of_device_is_compatible(np, "mmc-card")) + broken_hpi = of_property_read_bool(np, "broken-hpi"); + of_node_put(np); + /* * The EXT_CSD format is meant to be forward compatible. As long * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV @@ -494,7 +502,7 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) } /* check whether the eMMC card supports HPI */ - if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { + if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { card->ext_csd.hpi = 1; if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; @@ -1750,7 +1758,7 @@ static int mmc_runtime_suspend(struct mmc_host *host) err = _mmc_suspend(host, true); if (err) - pr_err("%s: error %d doing aggessive suspend\n", + pr_err("%s: error %d doing aggressive suspend\n", mmc_hostname(host), err); return err; @@ -1768,7 +1776,7 @@ static int mmc_runtime_resume(struct mmc_host *host) err = _mmc_resume(host); if (err) - pr_err("%s: error %d doing aggessive resume\n", + pr_err("%s: error %d doing aggressive resume\n", mmc_hostname(host), err); return 0; diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c index 862356123d78..4c1d1757dbf9 100644 --- a/drivers/mmc/core/pwrseq.c +++ b/drivers/mmc/core/pwrseq.c @@ -19,7 +19,7 @@ struct mmc_pwrseq_match { const char *compatible; - int (*alloc)(struct mmc_host *host, struct device *dev); + struct mmc_pwrseq *(*alloc)(struct mmc_host *host, struct device *dev); }; static struct mmc_pwrseq_match pwrseq_match[] = { @@ -52,6 +52,7 @@ int mmc_pwrseq_alloc(struct mmc_host *host) struct platform_device *pdev; struct device_node *np; struct mmc_pwrseq_match *match; + struct mmc_pwrseq *pwrseq; int ret = 0; np = of_parse_phandle(host->parent->of_node, "mmc-pwrseq", 0); @@ -70,9 +71,14 @@ int mmc_pwrseq_alloc(struct mmc_host *host) goto err; } - ret = match->alloc(host, &pdev->dev); - if (!ret) - dev_info(host->parent, "allocated mmc-pwrseq\n"); + pwrseq = match->alloc(host, &pdev->dev); + if (IS_ERR(pwrseq)) { + ret = PTR_ERR(pwrseq); + goto err; + } + + host->pwrseq = pwrseq; + dev_info(host->parent, "allocated mmc-pwrseq\n"); err: of_node_put(np); @@ -109,4 +115,6 @@ void mmc_pwrseq_free(struct mmc_host *host) if (pwrseq && pwrseq->ops && pwrseq->ops->free) pwrseq->ops->free(host); + + host->pwrseq = NULL; } diff --git a/drivers/mmc/core/pwrseq.h b/drivers/mmc/core/pwrseq.h index aba3409e8d6e..096da48c6a7e 100644 --- a/drivers/mmc/core/pwrseq.h +++ b/drivers/mmc/core/pwrseq.h @@ -27,8 +27,10 @@ void mmc_pwrseq_post_power_on(struct mmc_host *host); void mmc_pwrseq_power_off(struct mmc_host *host); void mmc_pwrseq_free(struct mmc_host *host); -int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev); -int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev); +struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host, + struct device *dev); +struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host, + struct device *dev); #else diff --git a/drivers/mmc/core/pwrseq_emmc.c b/drivers/mmc/core/pwrseq_emmc.c index a2d545904fbf..9d6d2fb21796 100644 --- a/drivers/mmc/core/pwrseq_emmc.c +++ b/drivers/mmc/core/pwrseq_emmc.c @@ -49,7 +49,6 @@ static void mmc_pwrseq_emmc_free(struct mmc_host *host) unregister_restart_handler(&pwrseq->reset_nb); gpiod_put(pwrseq->reset_gpio); kfree(pwrseq); - host->pwrseq = NULL; } static struct mmc_pwrseq_ops mmc_pwrseq_emmc_ops = { @@ -67,14 +66,15 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this, return NOTIFY_DONE; } -int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev) +struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host, + struct device *dev) { struct mmc_pwrseq_emmc *pwrseq; int ret = 0; pwrseq = kzalloc(sizeof(struct mmc_pwrseq_emmc), GFP_KERNEL); if (!pwrseq) - return -ENOMEM; + return ERR_PTR(-ENOMEM); pwrseq->reset_gpio = gpiod_get_index(dev, "reset", 0, GPIOD_OUT_LOW); if (IS_ERR(pwrseq->reset_gpio)) { @@ -92,10 +92,9 @@ int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev) register_restart_handler(&pwrseq->reset_nb); pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops; - host->pwrseq = &pwrseq->pwrseq; - return 0; + return &pwrseq->pwrseq; free: kfree(pwrseq); - return ret; + return ERR_PTR(ret); } diff --git a/drivers/mmc/core/pwrseq_simple.c b/drivers/mmc/core/pwrseq_simple.c index e9f1d8d84613..0b14b83a53d6 100644 --- a/drivers/mmc/core/pwrseq_simple.c +++ b/drivers/mmc/core/pwrseq_simple.c @@ -85,7 +85,6 @@ static void mmc_pwrseq_simple_free(struct mmc_host *host) clk_put(pwrseq->ext_clk); kfree(pwrseq); - host->pwrseq = NULL; } static struct mmc_pwrseq_ops mmc_pwrseq_simple_ops = { @@ -95,7 +94,8 @@ static struct mmc_pwrseq_ops mmc_pwrseq_simple_ops = { .free = mmc_pwrseq_simple_free, }; -int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev) +struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host, + struct device *dev) { struct mmc_pwrseq_simple *pwrseq; int i, nr_gpios, ret = 0; @@ -107,7 +107,7 @@ int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev) pwrseq = kzalloc(sizeof(struct mmc_pwrseq_simple) + nr_gpios * sizeof(struct gpio_desc *), GFP_KERNEL); if (!pwrseq) - return -ENOMEM; + return ERR_PTR(-ENOMEM); pwrseq->ext_clk = clk_get(dev, "ext_clock"); if (IS_ERR(pwrseq->ext_clk) && @@ -124,7 +124,7 @@ int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev) PTR_ERR(pwrseq->reset_gpios[i]) != -ENOSYS) { ret = PTR_ERR(pwrseq->reset_gpios[i]); - while (--i) + while (i--) gpiod_put(pwrseq->reset_gpios[i]); goto clk_put; @@ -133,13 +133,12 @@ int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev) pwrseq->nr_gpios = nr_gpios; pwrseq->pwrseq.ops = &mmc_pwrseq_simple_ops; - host->pwrseq = &pwrseq->pwrseq; - return 0; + return &pwrseq->pwrseq; clk_put: if (!IS_ERR(pwrseq->ext_clk)) clk_put(pwrseq->ext_clk); free: kfree(pwrseq); - return ret; + return ERR_PTR(ret); } diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index ad4d43eae99d..31a9ef256d06 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1157,7 +1157,7 @@ static int mmc_sd_runtime_suspend(struct mmc_host *host) err = _mmc_sd_suspend(host); if (err) - pr_err("%s: error %d doing aggessive suspend\n", + pr_err("%s: error %d doing aggressive suspend\n", mmc_hostname(host), err); return err; @@ -1175,7 +1175,7 @@ static int mmc_sd_runtime_resume(struct mmc_host *host) err = _mmc_sd_resume(host); if (err) - pr_err("%s: error %d doing aggessive resume\n", + pr_err("%s: error %d doing aggressive resume\n", mmc_hostname(host), err); return 0; diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index ce6cc47206b0..5bc6c7dbbd60 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -293,19 +293,22 @@ static int sdio_enable_4bit_bus(struct mmc_card *card) int err; if (card->type == MMC_TYPE_SDIO) - return sdio_enable_wide(card); - - if ((card->host->caps & MMC_CAP_4_BIT_DATA) && - (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { + err = sdio_enable_wide(card); + else if ((card->host->caps & MMC_CAP_4_BIT_DATA) && + (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); if (err) return err; + err = sdio_enable_wide(card); + if (err <= 0) + mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1); } else return 0; - err = sdio_enable_wide(card); - if (err <= 0) - mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1); + if (err > 0) { + mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); + err = 0; + } return err; } @@ -547,13 +550,8 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card) /* * Switch to wider bus (if supported). */ - if (card->host->caps & MMC_CAP_4_BIT_DATA) { + if (card->host->caps & MMC_CAP_4_BIT_DATA) err = sdio_enable_4bit_bus(card); - if (err > 0) { - mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); - err = 0; - } - } /* Set the driver strength for the card */ sdio_select_driver_type(card); @@ -803,9 +801,7 @@ try_again: * Switch to wider bus (if supported). */ err = sdio_enable_4bit_bus(card); - if (err > 0) - mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); - else if (err) + if (err) goto remove; } finish: @@ -983,10 +979,6 @@ static int mmc_sdio_resume(struct mmc_host *host) } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { /* We may have switched to 1-bit mode during suspend */ err = sdio_enable_4bit_bus(host->card); - if (err > 0) { - mmc_set_bus_width(host, MMC_BUS_WIDTH_4); - err = 0; - } } if (!err && host->sdio_irqs) { diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 61ac63a3776a..b1f837e749fe 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -132,7 +132,7 @@ config MMC_SDHCI_OF_ARASAN config MMC_SDHCI_OF_ESDHC tristate "SDHCI OF support for the Freescale eSDHC controller" depends on MMC_SDHCI_PLTFM - depends on PPC_OF + depends on PPC select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER help This selects the Freescale eSDHC controller support. @@ -144,7 +144,7 @@ config MMC_SDHCI_OF_ESDHC config MMC_SDHCI_OF_HLWD tristate "SDHCI OF support for the Nintendo Wii SDHCI controllers" depends on MMC_SDHCI_PLTFM - depends on PPC_OF + depends on PPC select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER help This selects the Secure Digital Host Controller Interface (SDHCI) @@ -230,7 +230,7 @@ config MMC_SDHCI_PXAV3 tristate "Marvell MMP2 SD Host Controller support (PXAV3)" depends on CLKDEV_LOOKUP depends on MMC_SDHCI_PLTFM - depends on ARCH_MMP || COMPILE_TEST + depends on ARCH_BERLIN || ARCH_MMP || ARCH_MVEBU || COMPILE_TEST default CPU_MMP2 help This selects the Marvell(R) PXAV3 SD Host Controller. @@ -255,6 +255,7 @@ config MMC_SDHCI_PXAV2 config MMC_SDHCI_SPEAR tristate "SDHCI support on ST SPEAr platform" depends on MMC_SDHCI && PLAT_SPEAR + depends on OF help This selects the Secure Digital Host Controller Interface (SDHCI) often referrered to as the HSMMC block in some of the ST SPEAR range @@ -307,6 +308,20 @@ config MMC_SDHCI_F_SDH30 If unsure, say N. +config MMC_SDHCI_IPROC + tristate "SDHCI platform support for the iProc SD/MMC Controller" + depends on ARCH_BCM_IPROC || COMPILE_TEST + depends on MMC_SDHCI_PLTFM + default ARCH_BCM_IPROC + select MMC_SDHCI_IO_ACCESSORS + help + This selects the iProc SD/MMC controller. + + If you have an IPROC platform with SD or MMC devices, + say Y or M here. + + If unsure, say N. + config MMC_MOXART tristate "MOXART SD/MMC Host Controller support" depends on ARCH_MOXART && MMC @@ -393,14 +408,6 @@ config MMC_SDHCI_MSM If unsure, say N. -config MMC_MSM - tristate "Qualcomm SDCC Controller Support" - depends on MMC && (ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50) - help - This provides support for the SD/MMC cell found in the - MSM and QSD SOCs from Qualcomm. The controller also has - support for SDIO devices. - config MMC_MXC tristate "Freescale i.MX21/27/31 or MPC512x Multimedia Card support" depends on ARCH_MXC || PPC_MPC512x diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 6a7cfe0de332..e3ab5b968651 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -24,7 +24,6 @@ obj-$(CONFIG_MMC_OMAP) += omap.o obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o -obj-$(CONFIG_MMC_MSM) += msm_sdcc.o obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o obj-$(CONFIG_MMC_DAVINCI) += davinci_mmc.o obj-$(CONFIG_MMC_GOLDFISH) += android-goldfish.o @@ -71,6 +70,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o +obj-$(CONFIG_MMC_SDHCI_IPROC) += sdhci-iproc.o obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o obj-$(CONFIG_MMC_SDHCI_ST) += sdhci-st.o diff --git a/drivers/mmc/host/atmel-mci-regs.h b/drivers/mmc/host/atmel-mci-regs.h index c97001e15227..0aa44e679df4 100644 --- a/drivers/mmc/host/atmel-mci-regs.h +++ b/drivers/mmc/host/atmel-mci-regs.h @@ -135,10 +135,17 @@ #define ATMCI_REGS_SIZE 0x100 /* Register access macros */ -#define atmci_readl(port,reg) \ +#ifdef CONFIG_AVR32 +#define atmci_readl(port, reg) \ __raw_readl((port)->regs + reg) -#define atmci_writel(port,reg,value) \ +#define atmci_writel(port, reg, value) \ __raw_writel((value), (port)->regs + reg) +#else +#define atmci_readl(port, reg) \ + readl_relaxed((port)->regs + reg) +#define atmci_writel(port, reg, value) \ + writel_relaxed((value), (port)->regs + reg) +#endif /* On AVR chips the Peripheral DMA Controller is not connected to MCI. */ #ifdef CONFIG_AVR32 diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index fe32948c6114..e761eb1b1441 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -40,7 +40,12 @@ struct dw_mci_exynos_priv_data { u8 ciu_div; u32 sdr_timing; u32 ddr_timing; + u32 hs400_timing; + u32 tuned_sample; u32 cur_speed; + u32 dqs_delay; + u32 saved_dqs_en; + u32 saved_strobe_ctrl; }; static struct dw_mci_exynos_compatible { @@ -71,6 +76,21 @@ static struct dw_mci_exynos_compatible { }, }; +static inline u8 dw_mci_exynos_get_ciu_div(struct dw_mci *host) +{ + struct dw_mci_exynos_priv_data *priv = host->priv; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS4412) + return EXYNOS4412_FIXED_CIU_CLK_DIV; + else if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS4210) + return EXYNOS4210_FIXED_CIU_CLK_DIV; + else if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + return SDMMC_CLKSEL_GET_DIV(mci_readl(host, CLKSEL64)) + 1; + else + return SDMMC_CLKSEL_GET_DIV(mci_readl(host, CLKSEL)) + 1; +} + static int dw_mci_exynos_priv_init(struct dw_mci *host) { struct dw_mci_exynos_priv_data *priv = host->priv; @@ -85,6 +105,16 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) SDMMC_MPSCTRL_NON_SECURE_WRITE_BIT); } + if (priv->ctrl_type >= DW_MCI_TYPE_EXYNOS5420) { + priv->saved_strobe_ctrl = mci_readl(host, HS400_DLINE_CTRL); + priv->saved_dqs_en = mci_readl(host, HS400_DQS_EN); + priv->saved_dqs_en |= AXI_NON_BLOCKING_WR; + mci_writel(host, HS400_DQS_EN, priv->saved_dqs_en); + if (!priv->dqs_delay) + priv->dqs_delay = + DQS_CTRL_GET_RD_DELAY(priv->saved_strobe_ctrl); + } + return 0; } @@ -97,6 +127,26 @@ static int dw_mci_exynos_setup_clock(struct dw_mci *host) return 0; } +static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing) +{ + struct dw_mci_exynos_priv_data *priv = host->priv; + u32 clksel; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + clksel = mci_readl(host, CLKSEL64); + else + clksel = mci_readl(host, CLKSEL); + + clksel = (clksel & ~SDMMC_CLKSEL_TIMING_MASK) | timing; + + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || + priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) + mci_writel(host, CLKSEL64, clksel); + else + mci_writel(host, CLKSEL, clksel); +} + #ifdef CONFIG_PM_SLEEP static int dw_mci_exynos_suspend(struct device *dev) { @@ -172,30 +222,38 @@ static void dw_mci_exynos_prepare_command(struct dw_mci *host, u32 *cmdr) } } -static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) +static void dw_mci_exynos_config_hs400(struct dw_mci *host, u32 timing) { struct dw_mci_exynos_priv_data *priv = host->priv; - unsigned int wanted = ios->clock; - unsigned long actual; - u8 div = priv->ciu_div + 1; + u32 dqs, strobe; - if (ios->timing == MMC_TIMING_MMC_DDR52) { - if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || - priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) - mci_writel(host, CLKSEL64, priv->ddr_timing); - else - mci_writel(host, CLKSEL, priv->ddr_timing); - /* Should be double rate for DDR mode */ - if (ios->bus_width == MMC_BUS_WIDTH_8) - wanted <<= 1; + /* + * Not supported to configure register + * related to HS400 + */ + if (priv->ctrl_type < DW_MCI_TYPE_EXYNOS5420) + return; + + dqs = priv->saved_dqs_en; + strobe = priv->saved_strobe_ctrl; + + if (timing == MMC_TIMING_MMC_HS400) { + dqs |= DATA_STROBE_EN; + strobe = DQS_CTRL_RD_DELAY(strobe, priv->dqs_delay); } else { - if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || - priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) - mci_writel(host, CLKSEL64, priv->sdr_timing); - else - mci_writel(host, CLKSEL, priv->sdr_timing); + dqs &= ~DATA_STROBE_EN; } + mci_writel(host, HS400_DQS_EN, dqs); + mci_writel(host, HS400_DLINE_CTRL, strobe); +} + +static void dw_mci_exynos_adjust_clock(struct dw_mci *host, unsigned int wanted) +{ + struct dw_mci_exynos_priv_data *priv = host->priv; + unsigned long actual; + u8 div; + int ret; /* * Don't care if wanted clock is zero or * ciu clock is unavailable @@ -207,17 +265,52 @@ static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) if (wanted < EXYNOS_CCLKIN_MIN) wanted = EXYNOS_CCLKIN_MIN; - if (wanted != priv->cur_speed) { - int ret = clk_set_rate(host->ciu_clk, wanted * div); - if (ret) - dev_warn(host->dev, - "failed to set clk-rate %u error: %d\n", - wanted * div, ret); - actual = clk_get_rate(host->ciu_clk); - host->bus_hz = actual / div; - priv->cur_speed = wanted; - host->current_speed = 0; + if (wanted == priv->cur_speed) + return; + + div = dw_mci_exynos_get_ciu_div(host); + ret = clk_set_rate(host->ciu_clk, wanted * div); + if (ret) + dev_warn(host->dev, + "failed to set clk-rate %u error: %d\n", + wanted * div, ret); + actual = clk_get_rate(host->ciu_clk); + host->bus_hz = actual / div; + priv->cur_speed = wanted; + host->current_speed = 0; +} + +static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios) +{ + struct dw_mci_exynos_priv_data *priv = host->priv; + unsigned int wanted = ios->clock; + u32 timing = ios->timing, clksel; + + switch (timing) { + case MMC_TIMING_MMC_HS400: + /* Update tuned sample timing */ + clksel = SDMMC_CLKSEL_UP_SAMPLE( + priv->hs400_timing, priv->tuned_sample); + wanted <<= 1; + break; + case MMC_TIMING_MMC_DDR52: + clksel = priv->ddr_timing; + /* Should be double rate for DDR mode */ + if (ios->bus_width == MMC_BUS_WIDTH_8) + wanted <<= 1; + break; + default: + clksel = priv->sdr_timing; } + + /* Set clock timing for the requested speed mode*/ + dw_mci_exynos_set_clksel_timing(host, clksel); + + /* Configure setting for HS400 */ + dw_mci_exynos_config_hs400(host, timing); + + /* Configure clock rate */ + dw_mci_exynos_adjust_clock(host, wanted); } static int dw_mci_exynos_parse_dt(struct dw_mci *host) @@ -260,6 +353,16 @@ static int dw_mci_exynos_parse_dt(struct dw_mci *host) return ret; priv->ddr_timing = SDMMC_CLKSEL_TIMING(timing[0], timing[1], div); + + ret = of_property_read_u32_array(np, + "samsung,dw-mshc-hs400-timing", timing, 2); + if (!ret && of_property_read_u32(np, + "samsung,read-strobe-delay", &priv->dqs_delay)) + dev_dbg(host->dev, + "read-strobe-delay is not found, assuming usage of default value\n"); + + priv->hs400_timing = SDMMC_CLKSEL_TIMING(timing[0], timing[1], + HS400_FIXED_CIU_CLK_DIV); host->priv = priv; return 0; } @@ -285,7 +388,7 @@ static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample) clksel = mci_readl(host, CLKSEL64); else clksel = mci_readl(host, CLKSEL); - clksel = (clksel & ~0x7) | SDMMC_CLKSEL_CCLK_SAMPLE(sample); + clksel = SDMMC_CLKSEL_UP_SAMPLE(clksel, sample); if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) mci_writel(host, CLKSEL64, clksel); @@ -304,13 +407,16 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host) clksel = mci_readl(host, CLKSEL64); else clksel = mci_readl(host, CLKSEL); + sample = (clksel + 1) & 0x7; - clksel = (clksel & ~0x7) | sample; + clksel = SDMMC_CLKSEL_UP_SAMPLE(clksel, sample); + if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 || priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) mci_writel(host, CLKSEL64, clksel); else mci_writel(host, CLKSEL, clksel); + return sample; } @@ -343,6 +449,7 @@ out: static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot) { struct dw_mci *host = slot->host; + struct dw_mci_exynos_priv_data *priv = host->priv; struct mmc_host *mmc = slot->mmc; u8 start_smpl, smpl, candiates = 0; s8 found = -1; @@ -360,14 +467,27 @@ static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot) } while (start_smpl != smpl); found = dw_mci_exynos_get_best_clksmpl(candiates); - if (found >= 0) + if (found >= 0) { dw_mci_exynos_set_clksmpl(host, found); - else + priv->tuned_sample = found; + } else { ret = -EIO; + } return ret; } +static int dw_mci_exynos_prepare_hs400_tuning(struct dw_mci *host, + struct mmc_ios *ios) +{ + struct dw_mci_exynos_priv_data *priv = host->priv; + + dw_mci_exynos_set_clksel_timing(host, priv->hs400_timing); + dw_mci_exynos_adjust_clock(host, (ios->clock) << 1); + + return 0; +} + /* Common capabilities of Exynos4/Exynos5 SoC */ static unsigned long exynos_dwmmc_caps[4] = { MMC_CAP_1_8V_DDR | MMC_CAP_8_BIT_DATA | MMC_CAP_CMD23, @@ -384,6 +504,7 @@ static const struct dw_mci_drv_data exynos_drv_data = { .set_ios = dw_mci_exynos_set_ios, .parse_dt = dw_mci_exynos_parse_dt, .execute_tuning = dw_mci_exynos_execute_tuning, + .prepare_hs400_tuning = dw_mci_exynos_prepare_hs400_tuning, }; static const struct of_device_id dw_mci_exynos_match[] = { diff --git a/drivers/mmc/host/dw_mmc-exynos.h b/drivers/mmc/host/dw_mmc-exynos.h index 7872ce586b55..595c934e6166 100644 --- a/drivers/mmc/host/dw_mmc-exynos.h +++ b/drivers/mmc/host/dw_mmc-exynos.h @@ -12,20 +12,36 @@ #ifndef _DW_MMC_EXYNOS_H_ #define _DW_MMC_EXYNOS_H_ -/* Extended Register's Offset */ #define SDMMC_CLKSEL 0x09C #define SDMMC_CLKSEL64 0x0A8 +/* Extended Register's Offset */ +#define SDMMC_HS400_DQS_EN 0x180 +#define SDMMC_HS400_ASYNC_FIFO_CTRL 0x184 +#define SDMMC_HS400_DLINE_CTRL 0x188 + /* CLKSEL register defines */ #define SDMMC_CLKSEL_CCLK_SAMPLE(x) (((x) & 7) << 0) #define SDMMC_CLKSEL_CCLK_DRIVE(x) (((x) & 7) << 16) #define SDMMC_CLKSEL_CCLK_DIVIDER(x) (((x) & 7) << 24) #define SDMMC_CLKSEL_GET_DRV_WD3(x) (((x) >> 16) & 0x7) +#define SDMMC_CLKSEL_GET_DIV(x) (((x) >> 24) & 0x7) +#define SDMMC_CLKSEL_UP_SAMPLE(x, y) (((x) & ~SDMMC_CLKSEL_CCLK_SAMPLE(7)) |\ + SDMMC_CLKSEL_CCLK_SAMPLE(y)) #define SDMMC_CLKSEL_TIMING(x, y, z) (SDMMC_CLKSEL_CCLK_SAMPLE(x) | \ SDMMC_CLKSEL_CCLK_DRIVE(y) | \ SDMMC_CLKSEL_CCLK_DIVIDER(z)) +#define SDMMC_CLKSEL_TIMING_MASK SDMMC_CLKSEL_TIMING(0x7, 0x7, 0x7) #define SDMMC_CLKSEL_WAKEUP_INT BIT(11) +/* RCLK_EN register defines */ +#define DATA_STROBE_EN BIT(0) +#define AXI_NON_BLOCKING_WR BIT(7) + +/* DLINE_CTRL register defines */ +#define DQS_CTRL_RD_DELAY(x, y) (((x) & ~0x3FF) | ((y) & 0x3FF)) +#define DQS_CTRL_GET_RD_DELAY(x) ((x) & 0x3FF) + /* Protector Register */ #define SDMMC_EMMCP_BASE 0x1000 #define SDMMC_MPSECURITY (SDMMC_EMMCP_BASE + 0x0010) @@ -49,6 +65,7 @@ /* Fixed clock divider */ #define EXYNOS4210_FIXED_CIU_CLK_DIV 2 #define EXYNOS4412_FIXED_CIU_CLK_DIV 4 +#define HS400_FIXED_CIU_CLK_DIV 1 /* Minimal required clock frequency for cclkin, unit: HZ */ #define EXYNOS_CCLKIN_MIN 50000000 diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index e2a726a503ee..dbf166f94f1b 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -76,12 +76,20 @@ static int dw_mci_rockchip_init(struct dw_mci *host) return 0; } +/* Common capabilities of RK3288 SoC */ +static unsigned long dw_mci_rk3288_dwmmc_caps[4] = { + MMC_CAP_RUNTIME_RESUME, /* emmc */ + MMC_CAP_RUNTIME_RESUME, /* sdmmc */ + MMC_CAP_RUNTIME_RESUME, /* sdio0 */ + MMC_CAP_RUNTIME_RESUME, /* sdio1 */ +}; static const struct dw_mci_drv_data rk2928_drv_data = { .prepare_command = dw_mci_rockchip_prepare_command, .init = dw_mci_rockchip_init, }; static const struct dw_mci_drv_data rk3288_drv_data = { + .caps = dw_mci_rk3288_dwmmc_caps, .prepare_command = dw_mci_rockchip_prepare_command, .set_ios = dw_mci_rk3288_set_ios, .setup_clock = dw_mci_rk3288_setup_clock, diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 4d2e3c2e1830..38b29265cc7c 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -69,7 +69,8 @@ struct idmac_desc_64addr { u32 des2; /*Buffer sizes */ #define IDMAC_64ADDR_SET_BUFFER1_SIZE(d, s) \ - ((d)->des2 = ((d)->des2 & 0x03ffe000) | ((s) & 0x1fff)) + ((d)->des2 = ((d)->des2 & cpu_to_le32(0x03ffe000)) | \ + ((cpu_to_le32(s)) & cpu_to_le32(0x1fff))) u32 des3; /* Reserved */ @@ -81,7 +82,7 @@ struct idmac_desc_64addr { }; struct idmac_desc { - u32 des0; /* Control Descriptor */ + __le32 des0; /* Control Descriptor */ #define IDMAC_DES0_DIC BIT(1) #define IDMAC_DES0_LD BIT(2) #define IDMAC_DES0_FD BIT(3) @@ -90,18 +91,19 @@ struct idmac_desc { #define IDMAC_DES0_CES BIT(30) #define IDMAC_DES0_OWN BIT(31) - u32 des1; /* Buffer sizes */ + __le32 des1; /* Buffer sizes */ #define IDMAC_SET_BUFFER1_SIZE(d, s) \ ((d)->des1 = ((d)->des1 & 0x03ffe000) | ((s) & 0x1fff)) - u32 des2; /* buffer 1 physical address */ + __le32 des2; /* buffer 1 physical address */ - u32 des3; /* buffer 2 physical address */ + __le32 des3; /* buffer 2 physical address */ }; #endif /* CONFIG_MMC_DW_IDMAC */ static bool dw_mci_reset(struct dw_mci *host); static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset); +static int dw_mci_card_busy(struct mmc_host *mmc); #if defined(CONFIG_DEBUG_FS) static int dw_mci_req_show(struct seq_file *s, void *v) @@ -335,6 +337,31 @@ static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd) return cmdr; } +static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(500); + + /* + * Databook says that before issuing a new data transfer command + * we need to check to see if the card is busy. Data transfer commands + * all have SDMMC_CMD_PRV_DAT_WAIT set, so we'll key off that. + * + * ...also allow sending for SDMMC_CMD_VOLT_SWITCH where busy is + * expected. + */ + if ((cmd_flags & SDMMC_CMD_PRV_DAT_WAIT) && + !(cmd_flags & SDMMC_CMD_VOLT_SWITCH)) { + while (mci_readl(host, STATUS) & SDMMC_STATUS_BUSY) { + if (time_after(jiffies, timeout)) { + /* Command will fail; we'll pass error then */ + dev_err(host->dev, "Busy; trying anyway\n"); + break; + } + udelay(10); + } + } +} + static void dw_mci_start_command(struct dw_mci *host, struct mmc_command *cmd, u32 cmd_flags) { @@ -345,6 +372,7 @@ static void dw_mci_start_command(struct dw_mci *host, mci_writel(host, CMDARG, cmd->arg); wmb(); + dw_mci_wait_while_busy(host, cmd_flags); mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START); } @@ -477,23 +505,23 @@ static void dw_mci_translate_sglist(struct dw_mci *host, struct mmc_data *data, * Set the OWN bit and disable interrupts for this * descriptor */ - desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC | - IDMAC_DES0_CH; + desc->des0 = cpu_to_le32(IDMAC_DES0_OWN | + IDMAC_DES0_DIC | IDMAC_DES0_CH); /* Buffer length */ IDMAC_SET_BUFFER1_SIZE(desc, length); /* Physical address to DMA to/from */ - desc->des2 = mem_addr; + desc->des2 = cpu_to_le32(mem_addr); } /* Set first descriptor */ desc = host->sg_cpu; - desc->des0 |= IDMAC_DES0_FD; + desc->des0 |= cpu_to_le32(IDMAC_DES0_FD); /* Set last descriptor */ desc = host->sg_cpu + (i - 1) * sizeof(struct idmac_desc); - desc->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC); - desc->des0 |= IDMAC_DES0_LD; + desc->des0 &= cpu_to_le32(~(IDMAC_DES0_CH | IDMAC_DES0_DIC)); + desc->des0 |= cpu_to_le32(IDMAC_DES0_LD); } wmb(); @@ -562,12 +590,12 @@ static int dw_mci_idmac_init(struct dw_mci *host) /* Forward link the descriptor list */ for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++) - p->des3 = host->sg_dma + (sizeof(struct idmac_desc) * - (i + 1)); + p->des3 = cpu_to_le32(host->sg_dma + + (sizeof(struct idmac_desc) * (i + 1))); /* Set the last descriptor as the end-of-ring descriptor */ - p->des3 = host->sg_dma; - p->des0 = IDMAC_DES0_ER; + p->des3 = cpu_to_le32(host->sg_dma); + p->des0 = cpu_to_le32(IDMAC_DES0_ER); } dw_mci_idmac_reset(host); @@ -737,6 +765,7 @@ static void dw_mci_ctrl_rd_thld(struct dw_mci *host, struct mmc_data *data) return; if (host->timing != MMC_TIMING_MMC_HS200 && + host->timing != MMC_TIMING_MMC_HS400 && host->timing != MMC_TIMING_UHS_SDR104) goto disable; @@ -876,6 +905,7 @@ static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg) mci_writel(host, CMDARG, arg); wmb(); + dw_mci_wait_while_busy(host, cmd); mci_writel(host, CMD, SDMMC_CMD_START | cmd); while (time_before(jiffies, timeout)) { @@ -992,6 +1022,26 @@ static void __dw_mci_start_request(struct dw_mci *host, dw_mci_start_command(host, cmd, cmdflags); + if (cmd->opcode == SD_SWITCH_VOLTAGE) { + unsigned long irqflags; + + /* + * Databook says to fail after 2ms w/ no response, but evidence + * shows that sometimes the cmd11 interrupt takes over 130ms. + * We'll set to 500ms, plus an extra jiffy just in case jiffies + * is just about to roll over. + * + * We do this whole thing under spinlock and only if the + * command hasn't already completed (indicating the the irq + * already ran so we don't want the timeout). + */ + spin_lock_irqsave(&host->irq_lock, irqflags); + if (!test_bit(EVENT_CMD_COMPLETE, &host->pending_events)) + mod_timer(&host->cmd11_timer, + jiffies + msecs_to_jiffies(500) + 1); + spin_unlock_irqrestore(&host->irq_lock, irqflags); + } + if (mrq->stop) host->stop_cmdr = dw_mci_prepare_command(slot->mmc, mrq->stop); else @@ -1084,7 +1134,8 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) regs = mci_readl(slot->host, UHS_REG); /* DDR mode set */ - if (ios->timing == MMC_TIMING_MMC_DDR52) + if (ios->timing == MMC_TIMING_MMC_DDR52 || + ios->timing == MMC_TIMING_MMC_HS400) regs |= ((0x1 << slot->id) << 16); else regs &= ~((0x1 << slot->id) << 16); @@ -1101,12 +1152,6 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (drv_data && drv_data->set_ios) drv_data->set_ios(slot->host, ios); - /* Slot specific timing and width adjustment */ - dw_mci_setup_bus(slot, false); - - if (slot->host->state == STATE_WAITING_CMD11_DONE && ios->clock != 0) - slot->host->state = STATE_IDLE; - switch (ios->power_mode) { case MMC_POWER_UP: if (!IS_ERR(mmc->supply.vmmc)) { @@ -1125,23 +1170,39 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) mci_writel(slot->host, PWREN, regs); break; case MMC_POWER_ON: - if (!IS_ERR(mmc->supply.vqmmc) && !slot->host->vqmmc_enabled) { - ret = regulator_enable(mmc->supply.vqmmc); - if (ret < 0) - dev_err(slot->host->dev, - "failed to enable vqmmc regulator\n"); - else + if (!slot->host->vqmmc_enabled) { + if (!IS_ERR(mmc->supply.vqmmc)) { + ret = regulator_enable(mmc->supply.vqmmc); + if (ret < 0) + dev_err(slot->host->dev, + "failed to enable vqmmc\n"); + else + slot->host->vqmmc_enabled = true; + + } else { + /* Keep track so we don't reset again */ slot->host->vqmmc_enabled = true; + } + + /* Reset our state machine after powering on */ + dw_mci_ctrl_reset(slot->host, + SDMMC_CTRL_ALL_RESET_FLAGS); } + + /* Adjust clock / bus width after power is up */ + dw_mci_setup_bus(slot, false); + break; case MMC_POWER_OFF: + /* Turn clock off before power goes down */ + dw_mci_setup_bus(slot, false); + if (!IS_ERR(mmc->supply.vmmc)) mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); - if (!IS_ERR(mmc->supply.vqmmc) && slot->host->vqmmc_enabled) { + if (!IS_ERR(mmc->supply.vqmmc) && slot->host->vqmmc_enabled) regulator_disable(mmc->supply.vqmmc); - slot->host->vqmmc_enabled = false; - } + slot->host->vqmmc_enabled = false; regs = mci_readl(slot->host, PWREN); regs &= ~(1 << slot->id); @@ -1150,6 +1211,9 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) default: break; } + + if (slot->host->state == STATE_WAITING_CMD11_DONE && ios->clock != 0) + slot->host->state = STATE_IDLE; } static int dw_mci_card_busy(struct mmc_host *mmc) @@ -1323,6 +1387,18 @@ static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode) return err; } +static int dw_mci_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct dw_mci_slot *slot = mmc_priv(mmc); + struct dw_mci *host = slot->host; + const struct dw_mci_drv_data *drv_data = host->drv_data; + + if (drv_data && drv_data->prepare_hs400_tuning) + return drv_data->prepare_hs400_tuning(host, ios); + + return 0; +} + static const struct mmc_host_ops dw_mci_ops = { .request = dw_mci_request, .pre_req = dw_mci_pre_req, @@ -1335,6 +1411,7 @@ static const struct mmc_host_ops dw_mci_ops = { .card_busy = dw_mci_card_busy, .start_signal_voltage_switch = dw_mci_switch_voltage, .init_card = dw_mci_init_card, + .prepare_hs400_tuning = dw_mci_prepare_hs400_tuning, }; static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq) @@ -1520,7 +1597,10 @@ static void dw_mci_tasklet_func(unsigned long priv) if (test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)) { dw_mci_stop_dma(host); - send_stop_abort(host, data); + if (data->stop || + !(host->data_status & (SDMMC_INT_DRTO | + SDMMC_INT_EBE))) + send_stop_abort(host, data); state = STATE_DATA_ERROR; break; } @@ -1547,7 +1627,10 @@ static void dw_mci_tasklet_func(unsigned long priv) if (test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)) { dw_mci_stop_dma(host); - send_stop_abort(host, data); + if (data->stop || + !(host->data_status & (SDMMC_INT_DRTO | + SDMMC_INT_EBE))) + send_stop_abort(host, data); state = STATE_DATA_ERROR; break; } @@ -1685,8 +1768,7 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt) buf += len; cnt -= len; if (host->part_buf_count == 2) { - mci_writew(host, DATA(host->data_offset), - host->part_buf16); + mci_fifo_writew(host->fifo_reg, host->part_buf16); host->part_buf_count = 0; } } @@ -1703,15 +1785,14 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt) cnt -= len; /* push data from aligned buffer into fifo */ for (i = 0; i < items; ++i) - mci_writew(host, DATA(host->data_offset), - aligned_buf[i]); + mci_fifo_writew(host->fifo_reg, aligned_buf[i]); } } else #endif { u16 *pdata = buf; for (; cnt >= 2; cnt -= 2) - mci_writew(host, DATA(host->data_offset), *pdata++); + mci_fifo_writew(host->fifo_reg, *pdata++); buf = pdata; } /* put anything remaining in the part_buf */ @@ -1720,8 +1801,7 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt) /* Push data if we have reached the expected data length */ if ((data->bytes_xfered + init_cnt) == (data->blksz * data->blocks)) - mci_writew(host, DATA(host->data_offset), - host->part_buf16); + mci_fifo_writew(host->fifo_reg, host->part_buf16); } } @@ -1736,8 +1816,7 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt) int items = len >> 1; int i; for (i = 0; i < items; ++i) - aligned_buf[i] = mci_readw(host, - DATA(host->data_offset)); + aligned_buf[i] = mci_fifo_readw(host->fifo_reg); /* memcpy from aligned buffer into output buffer */ memcpy(buf, aligned_buf, len); buf += len; @@ -1748,11 +1827,11 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt) { u16 *pdata = buf; for (; cnt >= 2; cnt -= 2) - *pdata++ = mci_readw(host, DATA(host->data_offset)); + *pdata++ = mci_fifo_readw(host->fifo_reg); buf = pdata; } if (cnt) { - host->part_buf16 = mci_readw(host, DATA(host->data_offset)); + host->part_buf16 = mci_fifo_readw(host->fifo_reg); dw_mci_pull_final_bytes(host, buf, cnt); } } @@ -1768,8 +1847,7 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt) buf += len; cnt -= len; if (host->part_buf_count == 4) { - mci_writel(host, DATA(host->data_offset), - host->part_buf32); + mci_fifo_writel(host->fifo_reg, host->part_buf32); host->part_buf_count = 0; } } @@ -1786,15 +1864,14 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt) cnt -= len; /* push data from aligned buffer into fifo */ for (i = 0; i < items; ++i) - mci_writel(host, DATA(host->data_offset), - aligned_buf[i]); + mci_fifo_writel(host->fifo_reg, aligned_buf[i]); } } else #endif { u32 *pdata = buf; for (; cnt >= 4; cnt -= 4) - mci_writel(host, DATA(host->data_offset), *pdata++); + mci_fifo_writel(host->fifo_reg, *pdata++); buf = pdata; } /* put anything remaining in the part_buf */ @@ -1803,8 +1880,7 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt) /* Push data if we have reached the expected data length */ if ((data->bytes_xfered + init_cnt) == (data->blksz * data->blocks)) - mci_writel(host, DATA(host->data_offset), - host->part_buf32); + mci_fifo_writel(host->fifo_reg, host->part_buf32); } } @@ -1819,8 +1895,7 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt) int items = len >> 2; int i; for (i = 0; i < items; ++i) - aligned_buf[i] = mci_readl(host, - DATA(host->data_offset)); + aligned_buf[i] = mci_fifo_readl(host->fifo_reg); /* memcpy from aligned buffer into output buffer */ memcpy(buf, aligned_buf, len); buf += len; @@ -1831,11 +1906,11 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt) { u32 *pdata = buf; for (; cnt >= 4; cnt -= 4) - *pdata++ = mci_readl(host, DATA(host->data_offset)); + *pdata++ = mci_fifo_readl(host->fifo_reg); buf = pdata; } if (cnt) { - host->part_buf32 = mci_readl(host, DATA(host->data_offset)); + host->part_buf32 = mci_fifo_readl(host->fifo_reg); dw_mci_pull_final_bytes(host, buf, cnt); } } @@ -1852,8 +1927,7 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt) cnt -= len; if (host->part_buf_count == 8) { - mci_writeq(host, DATA(host->data_offset), - host->part_buf); + mci_fifo_writeq(host->fifo_reg, host->part_buf); host->part_buf_count = 0; } } @@ -1870,15 +1944,14 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt) cnt -= len; /* push data from aligned buffer into fifo */ for (i = 0; i < items; ++i) - mci_writeq(host, DATA(host->data_offset), - aligned_buf[i]); + mci_fifo_writeq(host->fifo_reg, aligned_buf[i]); } } else #endif { u64 *pdata = buf; for (; cnt >= 8; cnt -= 8) - mci_writeq(host, DATA(host->data_offset), *pdata++); + mci_fifo_writeq(host->fifo_reg, *pdata++); buf = pdata; } /* put anything remaining in the part_buf */ @@ -1887,8 +1960,7 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt) /* Push data if we have reached the expected data length */ if ((data->bytes_xfered + init_cnt) == (data->blksz * data->blocks)) - mci_writeq(host, DATA(host->data_offset), - host->part_buf); + mci_fifo_writeq(host->fifo_reg, host->part_buf); } } @@ -1903,8 +1975,8 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt) int items = len >> 3; int i; for (i = 0; i < items; ++i) - aligned_buf[i] = mci_readq(host, - DATA(host->data_offset)); + aligned_buf[i] = mci_fifo_readq(host->fifo_reg); + /* memcpy from aligned buffer into output buffer */ memcpy(buf, aligned_buf, len); buf += len; @@ -1915,11 +1987,11 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt) { u64 *pdata = buf; for (; cnt >= 8; cnt -= 8) - *pdata++ = mci_readq(host, DATA(host->data_offset)); + *pdata++ = mci_fifo_readq(host->fifo_reg); buf = pdata; } if (cnt) { - host->part_buf = mci_readq(host, DATA(host->data_offset)); + host->part_buf = mci_fifo_readq(host->fifo_reg); dw_mci_pull_final_bytes(host, buf, cnt); } } @@ -2097,9 +2169,20 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) /* Check volt switch first, since it can look like an error */ if ((host->state == STATE_SENDING_CMD11) && (pending & SDMMC_INT_VOLT_SWITCH)) { + unsigned long irqflags; + mci_writel(host, RINTSTS, SDMMC_INT_VOLT_SWITCH); pending &= ~SDMMC_INT_VOLT_SWITCH; + + /* + * Hold the lock; we know cmd11_timer can't be kicked + * off after the lock is released, so safe to delete. + */ + spin_lock_irqsave(&host->irq_lock, irqflags); dw_mci_cmd_interrupt(host, pending); + spin_unlock_irqrestore(&host->irq_lock, irqflags); + + del_timer(&host->cmd11_timer); } if (pending & DW_MCI_CMD_ERROR_FLAGS) { @@ -2156,6 +2239,10 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) /* Handle SDIO Interrupts */ for (i = 0; i < host->num_slots; i++) { struct dw_mci_slot *slot = host->slot[i]; + + if (!slot) + continue; + if (pending & SDMMC_INT_SDIO(slot->sdio_id)) { mci_writel(host, RINTSTS, SDMMC_INT_SDIO(slot->sdio_id)); @@ -2506,6 +2593,20 @@ ciu_out: return ret; } +static void dw_mci_cmd11_timer(unsigned long arg) +{ + struct dw_mci *host = (struct dw_mci *)arg; + + if (host->state != STATE_SENDING_CMD11) { + dev_warn(host->dev, "Unexpected CMD11 timeout\n"); + return; + } + + host->cmd_status = SDMMC_INT_RTO; + set_bit(EVENT_CMD_COMPLETE, &host->pending_events); + tasklet_schedule(&host->tasklet); +} + #ifdef CONFIG_OF static struct dw_mci_of_quirks { char *quirk; @@ -2574,6 +2675,34 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host) } #endif /* CONFIG_OF */ +static void dw_mci_enable_cd(struct dw_mci *host) +{ + struct dw_mci_board *brd = host->pdata; + unsigned long irqflags; + u32 temp; + int i; + + /* No need for CD if broken card detection */ + if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION) + return; + + /* No need for CD if all slots have a non-error GPIO */ + for (i = 0; i < host->num_slots; i++) { + struct dw_mci_slot *slot = host->slot[i]; + + if (IS_ERR_VALUE(mmc_gpio_get_cd(slot->mmc))) + break; + } + if (i == host->num_slots) + return; + + spin_lock_irqsave(&host->irq_lock, irqflags); + temp = mci_readl(host, INTMASK); + temp |= SDMMC_INT_CD; + mci_writel(host, INTMASK, temp); + spin_unlock_irqrestore(&host->irq_lock, irqflags); +} + int dw_mci_probe(struct dw_mci *host) { const struct dw_mci_drv_data *drv_data = host->drv_data; @@ -2652,6 +2781,9 @@ int dw_mci_probe(struct dw_mci *host) } } + setup_timer(&host->cmd11_timer, + dw_mci_cmd11_timer, (unsigned long)host); + host->quirks = host->pdata->quirks; spin_lock_init(&host->lock); @@ -2731,9 +2863,9 @@ int dw_mci_probe(struct dw_mci *host) dev_info(host->dev, "Version ID is %04x\n", host->verid); if (host->verid < DW_MMC_240A) - host->data_offset = DATA_OFFSET; + host->fifo_reg = host->regs + DATA_OFFSET; else - host->data_offset = DATA_240A_OFFSET; + host->fifo_reg = host->regs + DATA_240A_OFFSET; tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host); ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt, @@ -2747,13 +2879,13 @@ int dw_mci_probe(struct dw_mci *host) host->num_slots = ((mci_readl(host, HCON) >> 1) & 0x1F) + 1; /* - * Enable interrupts for command done, data over, data empty, card det, + * Enable interrupts for command done, data over, data empty, * receive ready and error such as transmit, receive timeout, crc error */ mci_writel(host, RINTSTS, 0xFFFFFFFF); mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | SDMMC_INT_TXDR | SDMMC_INT_RXDR | - DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); + DW_MCI_ERROR_FLAGS); mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */ dev_info(host->dev, "DW MMC controller at irq %d, " @@ -2778,6 +2910,9 @@ int dw_mci_probe(struct dw_mci *host) goto err_dmaunmap; } + /* Now that slots are all setup, we can enable card detect */ + dw_mci_enable_cd(host); + if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO) dev_info(host->dev, "Internal DMAC interrupt fix enabled.\n"); @@ -2864,7 +2999,7 @@ int dw_mci_resume(struct dw_mci *host) mci_writel(host, RINTSTS, 0xFFFFFFFF); mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | SDMMC_INT_TXDR | SDMMC_INT_RXDR | - DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); + DW_MCI_ERROR_FLAGS); mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); for (i = 0; i < host->num_slots; i++) { @@ -2876,6 +3011,10 @@ int dw_mci_resume(struct dw_mci *host) dw_mci_setup_bus(slot, true); } } + + /* Now that slots are all setup, we can enable card detect */ + dw_mci_enable_cd(host); + return 0; } EXPORT_SYMBOL(dw_mci_resume); diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 18c4afe683b8..f45ab91de339 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -169,24 +169,34 @@ #define SDMMC_CTRL_ALL_RESET_FLAGS \ (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET) +/* FIFO register access macros. These should not change the data endian-ness + * as they are written to memory to be dealt with by the upper layers */ +#define mci_fifo_readw(__reg) __raw_readw(__reg) +#define mci_fifo_readl(__reg) __raw_readl(__reg) +#define mci_fifo_readq(__reg) __raw_readq(__reg) + +#define mci_fifo_writew(__value, __reg) __raw_writew(__reg, __value) +#define mci_fifo_writel(__value, __reg) __raw_writel(__reg, __value) +#define mci_fifo_writeq(__value, __reg) __raw_writeq(__reg, __value) + /* Register access macros */ #define mci_readl(dev, reg) \ - __raw_readl((dev)->regs + SDMMC_##reg) + readl_relaxed((dev)->regs + SDMMC_##reg) #define mci_writel(dev, reg, value) \ - __raw_writel((value), (dev)->regs + SDMMC_##reg) + writel_relaxed((value), (dev)->regs + SDMMC_##reg) /* 16-bit FIFO access macros */ #define mci_readw(dev, reg) \ - __raw_readw((dev)->regs + SDMMC_##reg) + readw_relaxed((dev)->regs + SDMMC_##reg) #define mci_writew(dev, reg, value) \ - __raw_writew((value), (dev)->regs + SDMMC_##reg) + writew_relaxed((value), (dev)->regs + SDMMC_##reg) /* 64-bit FIFO access macros */ #ifdef readq #define mci_readq(dev, reg) \ - __raw_readq((dev)->regs + SDMMC_##reg) + readq_relaxed((dev)->regs + SDMMC_##reg) #define mci_writeq(dev, reg, value) \ - __raw_writeq((value), (dev)->regs + SDMMC_##reg) + writeq_relaxed((value), (dev)->regs + SDMMC_##reg) #else /* * Dummy readq implementation for architectures that don't define it. @@ -200,6 +210,10 @@ (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg)) #define mci_writeq(dev, reg, value) \ (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value)) + +#define __raw_writeq(__value, __reg) \ + (*(volatile u64 __force *)(__reg) = (__value)) +#define __raw_readq(__reg) (*(volatile u64 __force *)(__reg)) #endif extern int dw_mci_probe(struct dw_mci *host); @@ -271,5 +285,7 @@ struct dw_mci_drv_data { void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); int (*parse_dt)(struct dw_mci *host); int (*execute_tuning)(struct dw_mci_slot *slot); + int (*prepare_hs400_tuning)(struct dw_mci *host, + struct mmc_ios *ios); }; #endif /* _DW_MMC_H_ */ diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index e4a07546f8b6..ae19d83bb9de 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1507,7 +1507,7 @@ static int mmc_spi_remove(struct spi_device *spi) return 0; } -static struct of_device_id mmc_spi_of_match_table[] = { +static const struct of_device_id mmc_spi_of_match_table[] = { { .compatible = "mmc-spi-slot", }, {}, }; diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 7fe16194ebc8..fb266745f824 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1613,7 +1613,10 @@ static int mmci_probe(struct amba_device *dev, dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max); /* Get regulators and the supported OCR mask */ - mmc_regulator_get_supply(mmc); + ret = mmc_regulator_get_supply(mmc); + if (ret == -EPROBE_DEFER) + goto clk_disable; + if (!mmc->ocr_avail) mmc->ocr_avail = plat->ocr_mask; else if (plat->ocr_mask) diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c deleted file mode 100644 index 90c60fd4ff6e..000000000000 --- a/drivers/mmc/host/msm_sdcc.c +++ /dev/null @@ -1,1474 +0,0 @@ -/* - * linux/drivers/mmc/host/msm_sdcc.c - Qualcomm MSM 7X00A SDCC Driver - * - * Copyright (C) 2007 Google Inc, - * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved. - * Copyright (C) 2009, Code Aurora Forum. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Based on mmci.c - * - * Author: San Mehat ([email protected]) - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/ioport.h> -#include <linux/device.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/highmem.h> -#include <linux/log2.h> -#include <linux/mmc/host.h> -#include <linux/mmc/card.h> -#include <linux/mmc/sdio.h> -#include <linux/clk.h> -#include <linux/scatterlist.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/debugfs.h> -#include <linux/io.h> -#include <linux/memory.h> -#include <linux/gfp.h> -#include <linux/gpio.h> - -#include <asm/cacheflush.h> -#include <asm/div64.h> -#include <asm/sizes.h> - -#include <linux/platform_data/mmc-msm_sdcc.h> -#include <mach/dma.h> -#include <mach/clk.h> - -#include "msm_sdcc.h" - -#define DRIVER_NAME "msm-sdcc" - -#define BUSCLK_PWRSAVE 1 -#define BUSCLK_TIMEOUT (HZ) -static unsigned int msmsdcc_fmin = 144000; -static unsigned int msmsdcc_fmax = 50000000; -static unsigned int msmsdcc_4bit = 1; -static unsigned int msmsdcc_pwrsave = 1; -static unsigned int msmsdcc_piopoll = 1; -static unsigned int msmsdcc_sdioirq; - -#define PIO_SPINMAX 30 -#define CMD_SPINMAX 20 - - -static inline void -msmsdcc_disable_clocks(struct msmsdcc_host *host, int deferr) -{ - WARN_ON(!host->clks_on); - - BUG_ON(host->curr.mrq); - - if (deferr) { - mod_timer(&host->busclk_timer, jiffies + BUSCLK_TIMEOUT); - } else { - del_timer_sync(&host->busclk_timer); - /* Need to check clks_on again in case the busclk - * timer fired - */ - if (host->clks_on) { - clk_disable(host->clk); - clk_disable(host->pclk); - host->clks_on = 0; - } - } -} - -static inline int -msmsdcc_enable_clocks(struct msmsdcc_host *host) -{ - int rc; - - del_timer_sync(&host->busclk_timer); - - if (!host->clks_on) { - rc = clk_enable(host->pclk); - if (rc) - return rc; - rc = clk_enable(host->clk); - if (rc) { - clk_disable(host->pclk); - return rc; - } - udelay(1 + ((3 * USEC_PER_SEC) / - (host->clk_rate ? host->clk_rate : msmsdcc_fmin))); - host->clks_on = 1; - } - return 0; -} - -static inline unsigned int -msmsdcc_readl(struct msmsdcc_host *host, unsigned int reg) -{ - return readl(host->base + reg); -} - -static inline void -msmsdcc_writel(struct msmsdcc_host *host, u32 data, unsigned int reg) -{ - writel(data, host->base + reg); - /* 3 clk delay required! */ - udelay(1 + ((3 * USEC_PER_SEC) / - (host->clk_rate ? host->clk_rate : msmsdcc_fmin))); -} - -static void -msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd, - u32 c); - -static void msmsdcc_reset_and_restore(struct msmsdcc_host *host) -{ - u32 mci_clk = 0; - u32 mci_mask0 = 0; - int ret = 0; - - /* Save the controller state */ - mci_clk = readl(host->base + MMCICLOCK); - mci_mask0 = readl(host->base + MMCIMASK0); - - /* Reset the controller */ - ret = clk_reset(host->clk, CLK_RESET_ASSERT); - if (ret) - pr_err("%s: Clock assert failed at %u Hz with err %d\n", - mmc_hostname(host->mmc), host->clk_rate, ret); - - ret = clk_reset(host->clk, CLK_RESET_DEASSERT); - if (ret) - pr_err("%s: Clock deassert failed at %u Hz with err %d\n", - mmc_hostname(host->mmc), host->clk_rate, ret); - - pr_info("%s: Controller has been re-initialiazed\n", - mmc_hostname(host->mmc)); - - /* Restore the contoller state */ - writel(host->pwr, host->base + MMCIPOWER); - writel(mci_clk, host->base + MMCICLOCK); - writel(mci_mask0, host->base + MMCIMASK0); - ret = clk_set_rate(host->clk, host->clk_rate); - if (ret) - pr_err("%s: Failed to set clk rate %u Hz (%d)\n", - mmc_hostname(host->mmc), host->clk_rate, ret); -} - -static void -msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq) -{ - BUG_ON(host->curr.data); - - host->curr.mrq = NULL; - host->curr.cmd = NULL; - - if (mrq->data) - mrq->data->bytes_xfered = host->curr.data_xfered; - if (mrq->cmd->error == -ETIMEDOUT) - mdelay(5); - -#if BUSCLK_PWRSAVE - msmsdcc_disable_clocks(host, 1); -#endif - /* - * Need to drop the host lock here; mmc_request_done may call - * back into the driver... - */ - spin_unlock(&host->lock); - mmc_request_done(host->mmc, mrq); - spin_lock(&host->lock); -} - -static void -msmsdcc_stop_data(struct msmsdcc_host *host) -{ - host->curr.data = NULL; - host->curr.got_dataend = 0; -} - -uint32_t msmsdcc_fifo_addr(struct msmsdcc_host *host) -{ - return host->memres->start + MMCIFIFO; -} - -static inline void -msmsdcc_start_command_exec(struct msmsdcc_host *host, u32 arg, u32 c) { - msmsdcc_writel(host, arg, MMCIARGUMENT); - msmsdcc_writel(host, c, MMCICOMMAND); -} - -static void -msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd) -{ - struct msmsdcc_host *host = (struct msmsdcc_host *)cmd->data; - - msmsdcc_writel(host, host->cmd_timeout, MMCIDATATIMER); - msmsdcc_writel(host, (unsigned int)host->curr.xfer_size, - MMCIDATALENGTH); - msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) & - (~MCI_IRQ_PIO)) | host->cmd_pio_irqmask, MMCIMASK0); - msmsdcc_writel(host, host->cmd_datactrl, MMCIDATACTRL); - - if (host->cmd_cmd) { - msmsdcc_start_command_exec(host, - (u32) host->cmd_cmd->arg, - (u32) host->cmd_c); - } - host->dma.active = 1; -} - -static void -msmsdcc_dma_complete_tlet(unsigned long data) -{ - struct msmsdcc_host *host = (struct msmsdcc_host *)data; - unsigned long flags; - struct mmc_request *mrq; - struct msm_dmov_errdata err; - - spin_lock_irqsave(&host->lock, flags); - host->dma.active = 0; - - err = host->dma.err; - mrq = host->curr.mrq; - BUG_ON(!mrq); - WARN_ON(!mrq->data); - - if (!(host->dma.result & DMOV_RSLT_VALID)) { - pr_err("msmsdcc: Invalid DataMover result\n"); - goto out; - } - - if (host->dma.result & DMOV_RSLT_DONE) { - host->curr.data_xfered = host->curr.xfer_size; - } else { - /* Error or flush */ - if (host->dma.result & DMOV_RSLT_ERROR) - pr_err("%s: DMA error (0x%.8x)\n", - mmc_hostname(host->mmc), host->dma.result); - if (host->dma.result & DMOV_RSLT_FLUSH) - pr_err("%s: DMA channel flushed (0x%.8x)\n", - mmc_hostname(host->mmc), host->dma.result); - - pr_err("Flush data: %.8x %.8x %.8x %.8x %.8x %.8x\n", - err.flush[0], err.flush[1], err.flush[2], - err.flush[3], err.flush[4], err.flush[5]); - - msmsdcc_reset_and_restore(host); - if (!mrq->data->error) - mrq->data->error = -EIO; - } - dma_unmap_sg(mmc_dev(host->mmc), host->dma.sg, host->dma.num_ents, - host->dma.dir); - - host->dma.sg = NULL; - host->dma.busy = 0; - - if (host->curr.got_dataend || mrq->data->error) { - - /* - * If we've already gotten our DATAEND / DATABLKEND - * for this request, then complete it through here. - */ - msmsdcc_stop_data(host); - - if (!mrq->data->error) - host->curr.data_xfered = host->curr.xfer_size; - if (!mrq->data->stop || mrq->cmd->error) { - host->curr.mrq = NULL; - host->curr.cmd = NULL; - mrq->data->bytes_xfered = host->curr.data_xfered; - - spin_unlock_irqrestore(&host->lock, flags); -#if BUSCLK_PWRSAVE - msmsdcc_disable_clocks(host, 1); -#endif - mmc_request_done(host->mmc, mrq); - return; - } else - msmsdcc_start_command(host, mrq->data->stop, 0); - } - -out: - spin_unlock_irqrestore(&host->lock, flags); - return; -} - -static void -msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd, - unsigned int result, - struct msm_dmov_errdata *err) -{ - struct msmsdcc_dma_data *dma_data = - container_of(cmd, struct msmsdcc_dma_data, hdr); - struct msmsdcc_host *host = dma_data->host; - - dma_data->result = result; - if (err) - memcpy(&dma_data->err, err, sizeof(struct msm_dmov_errdata)); - - tasklet_schedule(&host->dma_tlet); -} - -static int validate_dma(struct msmsdcc_host *host, struct mmc_data *data) -{ - if (host->dma.channel == -1) - return -ENOENT; - - if ((data->blksz * data->blocks) < MCI_FIFOSIZE) - return -EINVAL; - if ((data->blksz * data->blocks) % MCI_FIFOSIZE) - return -EINVAL; - return 0; -} - -static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data) -{ - struct msmsdcc_nc_dmadata *nc; - dmov_box *box; - uint32_t rows; - uint32_t crci; - unsigned int n; - int i, rc; - struct scatterlist *sg = data->sg; - - rc = validate_dma(host, data); - if (rc) - return rc; - - host->dma.sg = data->sg; - host->dma.num_ents = data->sg_len; - - BUG_ON(host->dma.num_ents > NR_SG); /* Prevent memory corruption */ - - nc = host->dma.nc; - - switch (host->pdev_id) { - case 1: - crci = MSMSDCC_CRCI_SDC1; - break; - case 2: - crci = MSMSDCC_CRCI_SDC2; - break; - case 3: - crci = MSMSDCC_CRCI_SDC3; - break; - case 4: - crci = MSMSDCC_CRCI_SDC4; - break; - default: - host->dma.sg = NULL; - host->dma.num_ents = 0; - return -ENOENT; - } - - if (data->flags & MMC_DATA_READ) - host->dma.dir = DMA_FROM_DEVICE; - else - host->dma.dir = DMA_TO_DEVICE; - - host->curr.user_pages = 0; - - box = &nc->cmd[0]; - - /* location of command block must be 64 bit aligned */ - BUG_ON(host->dma.cmd_busaddr & 0x07); - - nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP; - host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST | - DMOV_CMD_ADDR(host->dma.cmdptr_busaddr); - host->dma.hdr.complete_func = msmsdcc_dma_complete_func; - - n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg, - host->dma.num_ents, host->dma.dir); - if (n == 0) { - pr_err("%s: Unable to map in all sg elements\n", - mmc_hostname(host->mmc)); - host->dma.sg = NULL; - host->dma.num_ents = 0; - return -ENOMEM; - } - - for_each_sg(host->dma.sg, sg, n, i) { - - box->cmd = CMD_MODE_BOX; - - if (i == n - 1) - box->cmd |= CMD_LC; - rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ? - (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 : - (sg_dma_len(sg) / MCI_FIFOSIZE) ; - - if (data->flags & MMC_DATA_READ) { - box->src_row_addr = msmsdcc_fifo_addr(host); - box->dst_row_addr = sg_dma_address(sg); - - box->src_dst_len = (MCI_FIFOSIZE << 16) | - (MCI_FIFOSIZE); - box->row_offset = MCI_FIFOSIZE; - - box->num_rows = rows * ((1 << 16) + 1); - box->cmd |= CMD_SRC_CRCI(crci); - } else { - box->src_row_addr = sg_dma_address(sg); - box->dst_row_addr = msmsdcc_fifo_addr(host); - - box->src_dst_len = (MCI_FIFOSIZE << 16) | - (MCI_FIFOSIZE); - box->row_offset = (MCI_FIFOSIZE << 16); - - box->num_rows = rows * ((1 << 16) + 1); - box->cmd |= CMD_DST_CRCI(crci); - } - box++; - } - - return 0; -} - -static int -snoop_cccr_abort(struct mmc_command *cmd) -{ - if ((cmd->opcode == 52) && - (cmd->arg & 0x80000000) && - (((cmd->arg >> 9) & 0x1ffff) == SDIO_CCCR_ABORT)) - return 1; - return 0; -} - -static void -msmsdcc_start_command_deferred(struct msmsdcc_host *host, - struct mmc_command *cmd, u32 *c) -{ - *c |= (cmd->opcode | MCI_CPSM_ENABLE); - - if (cmd->flags & MMC_RSP_PRESENT) { - if (cmd->flags & MMC_RSP_136) - *c |= MCI_CPSM_LONGRSP; - *c |= MCI_CPSM_RESPONSE; - } - - if (/*interrupt*/0) - *c |= MCI_CPSM_INTERRUPT; - - if ((((cmd->opcode == 17) || (cmd->opcode == 18)) || - ((cmd->opcode == 24) || (cmd->opcode == 25))) || - (cmd->opcode == 53)) - *c |= MCI_CSPM_DATCMD; - - if (host->prog_scan && (cmd->opcode == 12)) { - *c |= MCI_CPSM_PROGENA; - host->prog_enable = true; - } - - if (cmd == cmd->mrq->stop) - *c |= MCI_CSPM_MCIABORT; - - if (snoop_cccr_abort(cmd)) - *c |= MCI_CSPM_MCIABORT; - - if (host->curr.cmd != NULL) { - pr_err("%s: Overlapping command requests\n", - mmc_hostname(host->mmc)); - } - host->curr.cmd = cmd; -} - -static void -msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data, - struct mmc_command *cmd, u32 c) -{ - unsigned int datactrl, timeout; - unsigned long long clks; - unsigned int pio_irqmask = 0; - - host->curr.data = data; - host->curr.xfer_size = data->blksz * data->blocks; - host->curr.xfer_remain = host->curr.xfer_size; - host->curr.data_xfered = 0; - host->curr.got_dataend = 0; - - memset(&host->pio, 0, sizeof(host->pio)); - - datactrl = MCI_DPSM_ENABLE | (data->blksz << 4); - - if (!msmsdcc_config_dma(host, data)) - datactrl |= MCI_DPSM_DMAENABLE; - else { - host->pio.sg = data->sg; - host->pio.sg_len = data->sg_len; - host->pio.sg_off = 0; - - if (data->flags & MMC_DATA_READ) { - pio_irqmask = MCI_RXFIFOHALFFULLMASK; - if (host->curr.xfer_remain < MCI_FIFOSIZE) - pio_irqmask |= MCI_RXDATAAVLBLMASK; - } else - pio_irqmask = MCI_TXFIFOHALFEMPTYMASK; - } - - if (data->flags & MMC_DATA_READ) - datactrl |= MCI_DPSM_DIRECTION; - - clks = (unsigned long long)data->timeout_ns * host->clk_rate; - do_div(clks, NSEC_PER_SEC); - timeout = data->timeout_clks + (unsigned int)clks*2 ; - - if (datactrl & MCI_DPSM_DMAENABLE) { - /* Save parameters for the exec function */ - host->cmd_timeout = timeout; - host->cmd_pio_irqmask = pio_irqmask; - host->cmd_datactrl = datactrl; - host->cmd_cmd = cmd; - - host->dma.hdr.execute_func = msmsdcc_dma_exec_func; - host->dma.hdr.data = (void *)host; - host->dma.busy = 1; - - if (cmd) { - msmsdcc_start_command_deferred(host, cmd, &c); - host->cmd_c = c; - } - msm_dmov_enqueue_cmd(host->dma.channel, &host->dma.hdr); - if (data->flags & MMC_DATA_WRITE) - host->prog_scan = true; - } else { - msmsdcc_writel(host, timeout, MMCIDATATIMER); - - msmsdcc_writel(host, host->curr.xfer_size, MMCIDATALENGTH); - - msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) & - (~MCI_IRQ_PIO)) | pio_irqmask, MMCIMASK0); - - msmsdcc_writel(host, datactrl, MMCIDATACTRL); - - if (cmd) { - /* Daisy-chain the command if requested */ - msmsdcc_start_command(host, cmd, c); - } - } -} - -static void -msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd, u32 c) -{ - if (cmd == cmd->mrq->stop) - c |= MCI_CSPM_MCIABORT; - - host->stats.cmds++; - - msmsdcc_start_command_deferred(host, cmd, &c); - msmsdcc_start_command_exec(host, cmd->arg, c); -} - -static void -msmsdcc_data_err(struct msmsdcc_host *host, struct mmc_data *data, - unsigned int status) -{ - if (status & MCI_DATACRCFAIL) { - pr_err("%s: Data CRC error\n", mmc_hostname(host->mmc)); - pr_err("%s: opcode 0x%.8x\n", __func__, - data->mrq->cmd->opcode); - pr_err("%s: blksz %d, blocks %d\n", __func__, - data->blksz, data->blocks); - data->error = -EILSEQ; - } else if (status & MCI_DATATIMEOUT) { - pr_err("%s: Data timeout\n", mmc_hostname(host->mmc)); - data->error = -ETIMEDOUT; - } else if (status & MCI_RXOVERRUN) { - pr_err("%s: RX overrun\n", mmc_hostname(host->mmc)); - data->error = -EIO; - } else if (status & MCI_TXUNDERRUN) { - pr_err("%s: TX underrun\n", mmc_hostname(host->mmc)); - data->error = -EIO; - } else { - pr_err("%s: Unknown error (0x%.8x)\n", - mmc_hostname(host->mmc), status); - data->error = -EIO; - } -} - - -static int -msmsdcc_pio_read(struct msmsdcc_host *host, char *buffer, unsigned int remain) -{ - uint32_t *ptr = (uint32_t *) buffer; - int count = 0; - - if (remain % 4) - remain = ((remain >> 2) + 1) << 2; - - while (msmsdcc_readl(host, MMCISTATUS) & MCI_RXDATAAVLBL) { - *ptr = msmsdcc_readl(host, MMCIFIFO + (count % MCI_FIFOSIZE)); - ptr++; - count += sizeof(uint32_t); - - remain -= sizeof(uint32_t); - if (remain == 0) - break; - } - return count; -} - -static int -msmsdcc_pio_write(struct msmsdcc_host *host, char *buffer, - unsigned int remain, u32 status) -{ - void __iomem *base = host->base; - char *ptr = buffer; - - do { - unsigned int count, maxcnt, sz; - - maxcnt = status & MCI_TXFIFOEMPTY ? MCI_FIFOSIZE : - MCI_FIFOHALFSIZE; - count = min(remain, maxcnt); - - sz = count % 4 ? (count >> 2) + 1 : (count >> 2); - writesl(base + MMCIFIFO, ptr, sz); - ptr += count; - remain -= count; - - if (remain == 0) - break; - - status = msmsdcc_readl(host, MMCISTATUS); - } while (status & MCI_TXFIFOHALFEMPTY); - - return ptr - buffer; -} - -static int -msmsdcc_spin_on_status(struct msmsdcc_host *host, uint32_t mask, int maxspin) -{ - while (maxspin) { - if ((msmsdcc_readl(host, MMCISTATUS) & mask)) - return 0; - udelay(1); - --maxspin; - } - return -ETIMEDOUT; -} - -static irqreturn_t -msmsdcc_pio_irq(int irq, void *dev_id) -{ - struct msmsdcc_host *host = dev_id; - uint32_t status; - u32 mci_mask0; - - status = msmsdcc_readl(host, MMCISTATUS); - mci_mask0 = msmsdcc_readl(host, MMCIMASK0); - - if (((mci_mask0 & status) & MCI_IRQ_PIO) == 0) - return IRQ_NONE; - - do { - unsigned long flags; - unsigned int remain, len; - char *buffer; - - if (!(status & (MCI_TXFIFOHALFEMPTY | MCI_RXDATAAVLBL))) { - if (host->curr.xfer_remain == 0 || !msmsdcc_piopoll) - break; - - if (msmsdcc_spin_on_status(host, - (MCI_TXFIFOHALFEMPTY | - MCI_RXDATAAVLBL), - PIO_SPINMAX)) { - break; - } - } - - /* Map the current scatter buffer */ - local_irq_save(flags); - buffer = kmap_atomic(sg_page(host->pio.sg)) - + host->pio.sg->offset; - buffer += host->pio.sg_off; - remain = host->pio.sg->length - host->pio.sg_off; - len = 0; - if (status & MCI_RXACTIVE) - len = msmsdcc_pio_read(host, buffer, remain); - if (status & MCI_TXACTIVE) - len = msmsdcc_pio_write(host, buffer, remain, status); - - /* Unmap the buffer */ - kunmap_atomic(buffer); - local_irq_restore(flags); - - host->pio.sg_off += len; - host->curr.xfer_remain -= len; - host->curr.data_xfered += len; - remain -= len; - - if (remain == 0) { - /* This sg page is full - do some housekeeping */ - if (status & MCI_RXACTIVE && host->curr.user_pages) - flush_dcache_page(sg_page(host->pio.sg)); - - if (!--host->pio.sg_len) { - memset(&host->pio, 0, sizeof(host->pio)); - break; - } - - /* Advance to next sg */ - host->pio.sg++; - host->pio.sg_off = 0; - } - - status = msmsdcc_readl(host, MMCISTATUS); - } while (1); - - if (status & MCI_RXACTIVE && host->curr.xfer_remain < MCI_FIFOSIZE) - msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | - MCI_RXDATAAVLBLMASK, MMCIMASK0); - - if (!host->curr.xfer_remain) - msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | 0, - MMCIMASK0); - - return IRQ_HANDLED; -} - -static void msmsdcc_do_cmdirq(struct msmsdcc_host *host, uint32_t status) -{ - struct mmc_command *cmd = host->curr.cmd; - - host->curr.cmd = NULL; - cmd->resp[0] = msmsdcc_readl(host, MMCIRESPONSE0); - cmd->resp[1] = msmsdcc_readl(host, MMCIRESPONSE1); - cmd->resp[2] = msmsdcc_readl(host, MMCIRESPONSE2); - cmd->resp[3] = msmsdcc_readl(host, MMCIRESPONSE3); - - if (status & MCI_CMDTIMEOUT) { - cmd->error = -ETIMEDOUT; - } else if (status & MCI_CMDCRCFAIL && - cmd->flags & MMC_RSP_CRC) { - pr_err("%s: Command CRC error\n", mmc_hostname(host->mmc)); - cmd->error = -EILSEQ; - } - - if (!cmd->data || cmd->error) { - if (host->curr.data && host->dma.sg) - msm_dmov_stop_cmd(host->dma.channel, - &host->dma.hdr, 0); - else if (host->curr.data) { /* Non DMA */ - msmsdcc_reset_and_restore(host); - msmsdcc_stop_data(host); - msmsdcc_request_end(host, cmd->mrq); - } else { /* host->data == NULL */ - if (!cmd->error && host->prog_enable) { - if (status & MCI_PROGDONE) { - host->prog_scan = false; - host->prog_enable = false; - msmsdcc_request_end(host, cmd->mrq); - } else { - host->curr.cmd = cmd; - } - } else { - if (host->prog_enable) { - host->prog_scan = false; - host->prog_enable = false; - } - msmsdcc_request_end(host, cmd->mrq); - } - } - } else if (cmd->data) - if (!(cmd->data->flags & MMC_DATA_READ)) - msmsdcc_start_data(host, cmd->data, - NULL, 0); -} - -static void -msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status, - void __iomem *base) -{ - struct mmc_data *data = host->curr.data; - - if (status & (MCI_CMDSENT | MCI_CMDRESPEND | MCI_CMDCRCFAIL | - MCI_CMDTIMEOUT | MCI_PROGDONE) && host->curr.cmd) { - msmsdcc_do_cmdirq(host, status); - } - - if (!data) - return; - - /* Check for data errors */ - if (status & (MCI_DATACRCFAIL | MCI_DATATIMEOUT | - MCI_TXUNDERRUN | MCI_RXOVERRUN)) { - msmsdcc_data_err(host, data, status); - host->curr.data_xfered = 0; - if (host->dma.sg) - msm_dmov_stop_cmd(host->dma.channel, - &host->dma.hdr, 0); - else { - msmsdcc_reset_and_restore(host); - if (host->curr.data) - msmsdcc_stop_data(host); - if (!data->stop) - msmsdcc_request_end(host, data->mrq); - else - msmsdcc_start_command(host, data->stop, 0); - } - } - - /* Check for data done */ - if (!host->curr.got_dataend && (status & MCI_DATAEND)) - host->curr.got_dataend = 1; - - /* - * If DMA is still in progress, we complete via the completion handler - */ - if (host->curr.got_dataend && !host->dma.busy) { - /* - * There appears to be an issue in the controller where - * if you request a small block transfer (< fifo size), - * you may get your DATAEND/DATABLKEND irq without the - * PIO data irq. - * - * Check to see if there is still data to be read, - * and simulate a PIO irq. - */ - if (readl(base + MMCISTATUS) & MCI_RXDATAAVLBL) - msmsdcc_pio_irq(1, host); - - msmsdcc_stop_data(host); - if (!data->error) - host->curr.data_xfered = host->curr.xfer_size; - - if (!data->stop) - msmsdcc_request_end(host, data->mrq); - else - msmsdcc_start_command(host, data->stop, 0); - } -} - -static irqreturn_t -msmsdcc_irq(int irq, void *dev_id) -{ - struct msmsdcc_host *host = dev_id; - void __iomem *base = host->base; - u32 status; - int ret = 0; - int cardint = 0; - - spin_lock(&host->lock); - - do { - status = msmsdcc_readl(host, MMCISTATUS); - status &= msmsdcc_readl(host, MMCIMASK0); - if ((status & (~MCI_IRQ_PIO)) == 0) - break; - msmsdcc_writel(host, status, MMCICLEAR); - - if (status & MCI_SDIOINTR) - status &= ~MCI_SDIOINTR; - - if (!status) - break; - - msmsdcc_handle_irq_data(host, status, base); - - if (status & MCI_SDIOINTOPER) { - cardint = 1; - status &= ~MCI_SDIOINTOPER; - } - ret = 1; - } while (status); - - spin_unlock(&host->lock); - - /* - * We have to delay handling the card interrupt as it calls - * back into the driver. - */ - if (cardint) - mmc_signal_sdio_irq(host->mmc); - - return IRQ_RETVAL(ret); -} - -static void -msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq) -{ - struct msmsdcc_host *host = mmc_priv(mmc); - unsigned long flags; - - WARN_ON(host->curr.mrq != NULL); - WARN_ON(host->pwr == 0); - - spin_lock_irqsave(&host->lock, flags); - - host->stats.reqs++; - - if (host->eject) { - if (mrq->data && !(mrq->data->flags & MMC_DATA_READ)) { - mrq->cmd->error = 0; - mrq->data->bytes_xfered = mrq->data->blksz * - mrq->data->blocks; - } else - mrq->cmd->error = -ENOMEDIUM; - - spin_unlock_irqrestore(&host->lock, flags); - mmc_request_done(mmc, mrq); - return; - } - - msmsdcc_enable_clocks(host); - - host->curr.mrq = mrq; - - if (mrq->data && mrq->data->flags & MMC_DATA_READ) - /* Queue/read data, daisy-chain command when data starts */ - msmsdcc_start_data(host, mrq->data, mrq->cmd, 0); - else - msmsdcc_start_command(host, mrq->cmd, 0); - - if (host->cmdpoll && !msmsdcc_spin_on_status(host, - MCI_CMDRESPEND|MCI_CMDCRCFAIL|MCI_CMDTIMEOUT, - CMD_SPINMAX)) { - uint32_t status = msmsdcc_readl(host, MMCISTATUS); - msmsdcc_do_cmdirq(host, status); - msmsdcc_writel(host, - MCI_CMDRESPEND | MCI_CMDCRCFAIL | MCI_CMDTIMEOUT, - MMCICLEAR); - host->stats.cmdpoll_hits++; - } else { - host->stats.cmdpoll_misses++; - } - spin_unlock_irqrestore(&host->lock, flags); -} - -static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable) -{ - struct msm_mmc_gpio_data *curr; - int i, rc = 0; - - if (!host->plat->gpio_data || host->gpio_config_status == enable) - return; - - curr = host->plat->gpio_data; - for (i = 0; i < curr->size; i++) { - if (enable) { - rc = gpio_request(curr->gpio[i].no, - curr->gpio[i].name); - if (rc) { - pr_err("%s: gpio_request(%d, %s) failed %d\n", - mmc_hostname(host->mmc), - curr->gpio[i].no, - curr->gpio[i].name, rc); - goto free_gpios; - } - } else { - gpio_free(curr->gpio[i].no); - } - } - host->gpio_config_status = enable; - return; - -free_gpios: - for (; i >= 0; i--) - gpio_free(curr->gpio[i].no); -} - -static void -msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -{ - struct msmsdcc_host *host = mmc_priv(mmc); - u32 clk = 0, pwr = 0; - int rc; - unsigned long flags; - - spin_lock_irqsave(&host->lock, flags); - - msmsdcc_enable_clocks(host); - - spin_unlock_irqrestore(&host->lock, flags); - - if (ios->clock) { - if (ios->clock != host->clk_rate) { - rc = clk_set_rate(host->clk, ios->clock); - if (rc < 0) - pr_err("%s: Error setting clock rate (%d)\n", - mmc_hostname(host->mmc), rc); - else - host->clk_rate = ios->clock; - } - clk |= MCI_CLK_ENABLE; - } - - if (ios->bus_width == MMC_BUS_WIDTH_4) - clk |= (2 << 10); /* Set WIDEBUS */ - - if (ios->clock > 400000 && msmsdcc_pwrsave) - clk |= (1 << 9); /* PWRSAVE */ - - clk |= (1 << 12); /* FLOW_ENA */ - clk |= (1 << 15); /* feedback clock */ - - if (host->plat->translate_vdd) - pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd); - - switch (ios->power_mode) { - case MMC_POWER_OFF: - msmsdcc_setup_gpio(host, false); - break; - case MMC_POWER_UP: - pwr |= MCI_PWR_UP; - msmsdcc_setup_gpio(host, true); - break; - case MMC_POWER_ON: - pwr |= MCI_PWR_ON; - break; - } - - if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) - pwr |= MCI_OD; - - msmsdcc_writel(host, clk, MMCICLOCK); - - if (host->pwr != pwr) { - host->pwr = pwr; - msmsdcc_writel(host, pwr, MMCIPOWER); - } -#if BUSCLK_PWRSAVE - spin_lock_irqsave(&host->lock, flags); - msmsdcc_disable_clocks(host, 1); - spin_unlock_irqrestore(&host->lock, flags); -#endif -} - -static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable) -{ - struct msmsdcc_host *host = mmc_priv(mmc); - unsigned long flags; - u32 status; - - spin_lock_irqsave(&host->lock, flags); - if (msmsdcc_sdioirq == 1) { - status = msmsdcc_readl(host, MMCIMASK0); - if (enable) - status |= MCI_SDIOINTOPERMASK; - else - status &= ~MCI_SDIOINTOPERMASK; - host->saved_irq0mask = status; - msmsdcc_writel(host, status, MMCIMASK0); - } - spin_unlock_irqrestore(&host->lock, flags); -} - -static void msmsdcc_init_card(struct mmc_host *mmc, struct mmc_card *card) -{ - struct msmsdcc_host *host = mmc_priv(mmc); - - if (host->plat->init_card) - host->plat->init_card(card); -} - -static const struct mmc_host_ops msmsdcc_ops = { - .request = msmsdcc_request, - .set_ios = msmsdcc_set_ios, - .enable_sdio_irq = msmsdcc_enable_sdio_irq, - .init_card = msmsdcc_init_card, -}; - -static void -msmsdcc_check_status(unsigned long data) -{ - struct msmsdcc_host *host = (struct msmsdcc_host *)data; - unsigned int status; - - if (!host->plat->status) { - mmc_detect_change(host->mmc, 0); - goto out; - } - - status = host->plat->status(mmc_dev(host->mmc)); - host->eject = !status; - if (status ^ host->oldstat) { - pr_info("%s: Slot status change detected (%d -> %d)\n", - mmc_hostname(host->mmc), host->oldstat, status); - if (status) - mmc_detect_change(host->mmc, (5 * HZ) / 2); - else - mmc_detect_change(host->mmc, 0); - } - - host->oldstat = status; - -out: - if (host->timer.function) - mod_timer(&host->timer, jiffies + HZ); -} - -static irqreturn_t -msmsdcc_platform_status_irq(int irq, void *dev_id) -{ - struct msmsdcc_host *host = dev_id; - - pr_debug("%s: %d\n", __func__, irq); - msmsdcc_check_status((unsigned long) host); - return IRQ_HANDLED; -} - -static void -msmsdcc_status_notify_cb(int card_present, void *dev_id) -{ - struct msmsdcc_host *host = dev_id; - - pr_debug("%s: card_present %d\n", mmc_hostname(host->mmc), - card_present); - msmsdcc_check_status((unsigned long) host); -} - -static void -msmsdcc_busclk_expired(unsigned long _data) -{ - struct msmsdcc_host *host = (struct msmsdcc_host *) _data; - - if (host->clks_on) - msmsdcc_disable_clocks(host, 0); -} - -static int -msmsdcc_init_dma(struct msmsdcc_host *host) -{ - memset(&host->dma, 0, sizeof(struct msmsdcc_dma_data)); - host->dma.host = host; - host->dma.channel = -1; - - if (!host->dmares) - return -ENODEV; - - host->dma.nc = dma_alloc_coherent(NULL, - sizeof(struct msmsdcc_nc_dmadata), - &host->dma.nc_busaddr, - GFP_KERNEL); - if (host->dma.nc == NULL) { - pr_err("Unable to allocate DMA buffer\n"); - return -ENOMEM; - } - memset(host->dma.nc, 0x00, sizeof(struct msmsdcc_nc_dmadata)); - host->dma.cmd_busaddr = host->dma.nc_busaddr; - host->dma.cmdptr_busaddr = host->dma.nc_busaddr + - offsetof(struct msmsdcc_nc_dmadata, cmdptr); - host->dma.channel = host->dmares->start; - - return 0; -} - -static int -msmsdcc_probe(struct platform_device *pdev) -{ - struct msm_mmc_platform_data *plat = pdev->dev.platform_data; - struct msmsdcc_host *host; - struct mmc_host *mmc; - struct resource *cmd_irqres = NULL; - struct resource *stat_irqres = NULL; - struct resource *memres = NULL; - struct resource *dmares = NULL; - int ret; - - /* must have platform data */ - if (!plat) { - pr_err("%s: Platform data not available\n", __func__); - ret = -EINVAL; - goto out; - } - - if (pdev->id < 1 || pdev->id > 4) - return -EINVAL; - - if (pdev->resource == NULL || pdev->num_resources < 2) { - pr_err("%s: Invalid resource\n", __func__); - return -ENXIO; - } - - memres = platform_get_resource(pdev, IORESOURCE_MEM, 0); - dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); - cmd_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ, - "cmd_irq"); - stat_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ, - "status_irq"); - - if (!cmd_irqres || !memres) { - pr_err("%s: Invalid resource\n", __func__); - return -ENXIO; - } - - /* - * Setup our host structure - */ - - mmc = mmc_alloc_host(sizeof(struct msmsdcc_host), &pdev->dev); - if (!mmc) { - ret = -ENOMEM; - goto out; - } - - host = mmc_priv(mmc); - host->pdev_id = pdev->id; - host->plat = plat; - host->mmc = mmc; - host->curr.cmd = NULL; - init_timer(&host->busclk_timer); - host->busclk_timer.data = (unsigned long) host; - host->busclk_timer.function = msmsdcc_busclk_expired; - - - host->cmdpoll = 1; - - host->base = ioremap(memres->start, PAGE_SIZE); - if (!host->base) { - ret = -ENOMEM; - goto host_free; - } - - host->cmd_irqres = cmd_irqres; - host->memres = memres; - host->dmares = dmares; - spin_lock_init(&host->lock); - - tasklet_init(&host->dma_tlet, msmsdcc_dma_complete_tlet, - (unsigned long)host); - - /* - * Setup DMA - */ - if (host->dmares) { - ret = msmsdcc_init_dma(host); - if (ret) - goto ioremap_free; - } else { - host->dma.channel = -1; - } - - /* Get our clocks */ - host->pclk = clk_get(&pdev->dev, "sdc_pclk"); - if (IS_ERR(host->pclk)) { - ret = PTR_ERR(host->pclk); - goto dma_free; - } - - host->clk = clk_get(&pdev->dev, "sdc_clk"); - if (IS_ERR(host->clk)) { - ret = PTR_ERR(host->clk); - goto pclk_put; - } - - ret = clk_set_rate(host->clk, msmsdcc_fmin); - if (ret) { - pr_err("%s: Clock rate set failed (%d)\n", __func__, ret); - goto clk_put; - } - - ret = clk_prepare(host->pclk); - if (ret) - goto clk_put; - - ret = clk_prepare(host->clk); - if (ret) - goto clk_unprepare_p; - - /* Enable clocks */ - ret = msmsdcc_enable_clocks(host); - if (ret) - goto clk_unprepare; - - host->pclk_rate = clk_get_rate(host->pclk); - host->clk_rate = clk_get_rate(host->clk); - - /* - * Setup MMC host structure - */ - mmc->ops = &msmsdcc_ops; - mmc->f_min = msmsdcc_fmin; - mmc->f_max = msmsdcc_fmax; - mmc->ocr_avail = plat->ocr_mask; - - if (msmsdcc_4bit) - mmc->caps |= MMC_CAP_4_BIT_DATA; - if (msmsdcc_sdioirq) - mmc->caps |= MMC_CAP_SDIO_IRQ; - mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; - - mmc->max_segs = NR_SG; - mmc->max_blk_size = 4096; /* MCI_DATA_CTL BLOCKSIZE up to 4096 */ - mmc->max_blk_count = 65536; - - mmc->max_req_size = 33554432; /* MCI_DATA_LENGTH is 25 bits */ - mmc->max_seg_size = mmc->max_req_size; - - msmsdcc_writel(host, 0, MMCIMASK0); - msmsdcc_writel(host, 0x5e007ff, MMCICLEAR); - - msmsdcc_writel(host, MCI_IRQENABLE, MMCIMASK0); - host->saved_irq0mask = MCI_IRQENABLE; - - /* - * Setup card detect change - */ - - memset(&host->timer, 0, sizeof(host->timer)); - - if (stat_irqres && !(stat_irqres->flags & IORESOURCE_DISABLED)) { - unsigned long irqflags = IRQF_SHARED | - (stat_irqres->flags & IRQF_TRIGGER_MASK); - - host->stat_irq = stat_irqres->start; - ret = request_irq(host->stat_irq, - msmsdcc_platform_status_irq, - irqflags, - DRIVER_NAME " (slot)", - host); - if (ret) { - pr_err("%s: Unable to get slot IRQ %d (%d)\n", - mmc_hostname(mmc), host->stat_irq, ret); - goto clk_disable; - } - } else if (plat->register_status_notify) { - plat->register_status_notify(msmsdcc_status_notify_cb, host); - } else if (!plat->status) - pr_err("%s: No card detect facilities available\n", - mmc_hostname(mmc)); - else { - init_timer(&host->timer); - host->timer.data = (unsigned long)host; - host->timer.function = msmsdcc_check_status; - host->timer.expires = jiffies + HZ; - add_timer(&host->timer); - } - - if (plat->status) { - host->oldstat = host->plat->status(mmc_dev(host->mmc)); - host->eject = !host->oldstat; - } - - ret = request_irq(cmd_irqres->start, msmsdcc_irq, IRQF_SHARED, - DRIVER_NAME " (cmd)", host); - if (ret) - goto stat_irq_free; - - ret = request_irq(cmd_irqres->start, msmsdcc_pio_irq, IRQF_SHARED, - DRIVER_NAME " (pio)", host); - if (ret) - goto cmd_irq_free; - - platform_set_drvdata(pdev, mmc); - mmc_add_host(mmc); - - pr_info("%s: Qualcomm MSM SDCC at 0x%016llx irq %d,%d dma %d\n", - mmc_hostname(mmc), (unsigned long long)memres->start, - (unsigned int) cmd_irqres->start, - (unsigned int) host->stat_irq, host->dma.channel); - pr_info("%s: 4 bit data mode %s\n", mmc_hostname(mmc), - (mmc->caps & MMC_CAP_4_BIT_DATA ? "enabled" : "disabled")); - pr_info("%s: MMC clock %u -> %u Hz, PCLK %u Hz\n", - mmc_hostname(mmc), msmsdcc_fmin, msmsdcc_fmax, host->pclk_rate); - pr_info("%s: Slot eject status = %d\n", mmc_hostname(mmc), host->eject); - pr_info("%s: Power save feature enable = %d\n", - mmc_hostname(mmc), msmsdcc_pwrsave); - - if (host->dma.channel != -1) { - pr_info("%s: DM non-cached buffer at %p, dma_addr 0x%.8x\n", - mmc_hostname(mmc), host->dma.nc, host->dma.nc_busaddr); - pr_info("%s: DM cmd busaddr 0x%.8x, cmdptr busaddr 0x%.8x\n", - mmc_hostname(mmc), host->dma.cmd_busaddr, - host->dma.cmdptr_busaddr); - } else - pr_info("%s: PIO transfer enabled\n", mmc_hostname(mmc)); - if (host->timer.function) - pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc)); - - return 0; - cmd_irq_free: - free_irq(cmd_irqres->start, host); - stat_irq_free: - if (host->stat_irq) - free_irq(host->stat_irq, host); - clk_disable: - msmsdcc_disable_clocks(host, 0); - clk_unprepare: - clk_unprepare(host->clk); - clk_unprepare_p: - clk_unprepare(host->pclk); - clk_put: - clk_put(host->clk); - pclk_put: - clk_put(host->pclk); -dma_free: - if (host->dmares) - dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata), - host->dma.nc, host->dma.nc_busaddr); -ioremap_free: - tasklet_kill(&host->dma_tlet); - iounmap(host->base); - host_free: - mmc_free_host(mmc); - out: - return ret; -} - -#ifdef CONFIG_PM -static int -msmsdcc_suspend(struct platform_device *dev, pm_message_t state) -{ - struct mmc_host *mmc = platform_get_drvdata(dev); - - if (mmc) { - struct msmsdcc_host *host = mmc_priv(mmc); - - if (host->stat_irq) - disable_irq(host->stat_irq); - - msmsdcc_writel(host, 0, MMCIMASK0); - if (host->clks_on) - msmsdcc_disable_clocks(host, 0); - } - return 0; -} - -static int -msmsdcc_resume(struct platform_device *dev) -{ - struct mmc_host *mmc = platform_get_drvdata(dev); - - if (mmc) { - struct msmsdcc_host *host = mmc_priv(mmc); - - msmsdcc_enable_clocks(host); - - msmsdcc_writel(host, host->saved_irq0mask, MMCIMASK0); - - if (host->stat_irq) - enable_irq(host->stat_irq); -#if BUSCLK_PWRSAVE - msmsdcc_disable_clocks(host, 1); -#endif - } - return 0; -} -#else -#define msmsdcc_suspend 0 -#define msmsdcc_resume 0 -#endif - -static struct platform_driver msmsdcc_driver = { - .probe = msmsdcc_probe, - .suspend = msmsdcc_suspend, - .resume = msmsdcc_resume, - .driver = { - .name = "msm_sdcc", - }, -}; - -module_platform_driver(msmsdcc_driver); - -MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h deleted file mode 100644 index 402028d16b86..000000000000 --- a/drivers/mmc/host/msm_sdcc.h +++ /dev/null @@ -1,256 +0,0 @@ -/* - * linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller - * - * Copyright (C) 2008 Google, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * - Based on mmci.h - */ - -#ifndef _MSM_SDCC_H -#define _MSM_SDCC_H - -#define MSMSDCC_CRCI_SDC1 6 -#define MSMSDCC_CRCI_SDC2 7 -#define MSMSDCC_CRCI_SDC3 12 -#define MSMSDCC_CRCI_SDC4 13 - -#define MMCIPOWER 0x000 -#define MCI_PWR_OFF 0x00 -#define MCI_PWR_UP 0x02 -#define MCI_PWR_ON 0x03 -#define MCI_OD (1 << 6) - -#define MMCICLOCK 0x004 -#define MCI_CLK_ENABLE (1 << 8) -#define MCI_CLK_PWRSAVE (1 << 9) -#define MCI_CLK_WIDEBUS (1 << 10) -#define MCI_CLK_FLOWENA (1 << 12) -#define MCI_CLK_INVERTOUT (1 << 13) -#define MCI_CLK_SELECTIN (1 << 14) - -#define MMCIARGUMENT 0x008 -#define MMCICOMMAND 0x00c -#define MCI_CPSM_RESPONSE (1 << 6) -#define MCI_CPSM_LONGRSP (1 << 7) -#define MCI_CPSM_INTERRUPT (1 << 8) -#define MCI_CPSM_PENDING (1 << 9) -#define MCI_CPSM_ENABLE (1 << 10) -#define MCI_CPSM_PROGENA (1 << 11) -#define MCI_CSPM_DATCMD (1 << 12) -#define MCI_CSPM_MCIABORT (1 << 13) -#define MCI_CSPM_CCSENABLE (1 << 14) -#define MCI_CSPM_CCSDISABLE (1 << 15) - - -#define MMCIRESPCMD 0x010 -#define MMCIRESPONSE0 0x014 -#define MMCIRESPONSE1 0x018 -#define MMCIRESPONSE2 0x01c -#define MMCIRESPONSE3 0x020 -#define MMCIDATATIMER 0x024 -#define MMCIDATALENGTH 0x028 - -#define MMCIDATACTRL 0x02c -#define MCI_DPSM_ENABLE (1 << 0) -#define MCI_DPSM_DIRECTION (1 << 1) -#define MCI_DPSM_MODE (1 << 2) -#define MCI_DPSM_DMAENABLE (1 << 3) - -#define MMCIDATACNT 0x030 -#define MMCISTATUS 0x034 -#define MCI_CMDCRCFAIL (1 << 0) -#define MCI_DATACRCFAIL (1 << 1) -#define MCI_CMDTIMEOUT (1 << 2) -#define MCI_DATATIMEOUT (1 << 3) -#define MCI_TXUNDERRUN (1 << 4) -#define MCI_RXOVERRUN (1 << 5) -#define MCI_CMDRESPEND (1 << 6) -#define MCI_CMDSENT (1 << 7) -#define MCI_DATAEND (1 << 8) -#define MCI_DATABLOCKEND (1 << 10) -#define MCI_CMDACTIVE (1 << 11) -#define MCI_TXACTIVE (1 << 12) -#define MCI_RXACTIVE (1 << 13) -#define MCI_TXFIFOHALFEMPTY (1 << 14) -#define MCI_RXFIFOHALFFULL (1 << 15) -#define MCI_TXFIFOFULL (1 << 16) -#define MCI_RXFIFOFULL (1 << 17) -#define MCI_TXFIFOEMPTY (1 << 18) -#define MCI_RXFIFOEMPTY (1 << 19) -#define MCI_TXDATAAVLBL (1 << 20) -#define MCI_RXDATAAVLBL (1 << 21) -#define MCI_SDIOINTR (1 << 22) -#define MCI_PROGDONE (1 << 23) -#define MCI_ATACMDCOMPL (1 << 24) -#define MCI_SDIOINTOPER (1 << 25) -#define MCI_CCSTIMEOUT (1 << 26) - -#define MMCICLEAR 0x038 -#define MCI_CMDCRCFAILCLR (1 << 0) -#define MCI_DATACRCFAILCLR (1 << 1) -#define MCI_CMDTIMEOUTCLR (1 << 2) -#define MCI_DATATIMEOUTCLR (1 << 3) -#define MCI_TXUNDERRUNCLR (1 << 4) -#define MCI_RXOVERRUNCLR (1 << 5) -#define MCI_CMDRESPENDCLR (1 << 6) -#define MCI_CMDSENTCLR (1 << 7) -#define MCI_DATAENDCLR (1 << 8) -#define MCI_DATABLOCKENDCLR (1 << 10) - -#define MMCIMASK0 0x03c -#define MCI_CMDCRCFAILMASK (1 << 0) -#define MCI_DATACRCFAILMASK (1 << 1) -#define MCI_CMDTIMEOUTMASK (1 << 2) -#define MCI_DATATIMEOUTMASK (1 << 3) -#define MCI_TXUNDERRUNMASK (1 << 4) -#define MCI_RXOVERRUNMASK (1 << 5) -#define MCI_CMDRESPENDMASK (1 << 6) -#define MCI_CMDSENTMASK (1 << 7) -#define MCI_DATAENDMASK (1 << 8) -#define MCI_DATABLOCKENDMASK (1 << 10) -#define MCI_CMDACTIVEMASK (1 << 11) -#define MCI_TXACTIVEMASK (1 << 12) -#define MCI_RXACTIVEMASK (1 << 13) -#define MCI_TXFIFOHALFEMPTYMASK (1 << 14) -#define MCI_RXFIFOHALFFULLMASK (1 << 15) -#define MCI_TXFIFOFULLMASK (1 << 16) -#define MCI_RXFIFOFULLMASK (1 << 17) -#define MCI_TXFIFOEMPTYMASK (1 << 18) -#define MCI_RXFIFOEMPTYMASK (1 << 19) -#define MCI_TXDATAAVLBLMASK (1 << 20) -#define MCI_RXDATAAVLBLMASK (1 << 21) -#define MCI_SDIOINTMASK (1 << 22) -#define MCI_PROGDONEMASK (1 << 23) -#define MCI_ATACMDCOMPLMASK (1 << 24) -#define MCI_SDIOINTOPERMASK (1 << 25) -#define MCI_CCSTIMEOUTMASK (1 << 26) - -#define MMCIMASK1 0x040 -#define MMCIFIFOCNT 0x044 -#define MCICCSTIMER 0x058 - -#define MMCIFIFO 0x080 /* to 0x0bc */ - -#define MCI_IRQENABLE \ - (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ - MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ - MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK) - -#define MCI_IRQ_PIO \ - (MCI_RXDATAAVLBLMASK | MCI_TXDATAAVLBLMASK | MCI_RXFIFOEMPTYMASK | \ - MCI_TXFIFOEMPTYMASK | MCI_RXFIFOFULLMASK | MCI_TXFIFOFULLMASK | \ - MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK | \ - MCI_RXACTIVEMASK | MCI_TXACTIVEMASK) -/* - * The size of the FIFO in bytes. - */ -#define MCI_FIFOSIZE (16*4) - -#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2) - -#define NR_SG 32 - -struct clk; - -struct msmsdcc_nc_dmadata { - dmov_box cmd[NR_SG]; - uint32_t cmdptr; -}; - -struct msmsdcc_dma_data { - struct msmsdcc_nc_dmadata *nc; - dma_addr_t nc_busaddr; - dma_addr_t cmd_busaddr; - dma_addr_t cmdptr_busaddr; - - struct msm_dmov_cmd hdr; - enum dma_data_direction dir; - - struct scatterlist *sg; - int num_ents; - - int channel; - struct msmsdcc_host *host; - int busy; /* Set if DM is busy */ - int active; - unsigned int result; - struct msm_dmov_errdata err; -}; - -struct msmsdcc_pio_data { - struct scatterlist *sg; - unsigned int sg_len; - unsigned int sg_off; -}; - -struct msmsdcc_curr_req { - struct mmc_request *mrq; - struct mmc_command *cmd; - struct mmc_data *data; - unsigned int xfer_size; /* Total data size */ - unsigned int xfer_remain; /* Bytes remaining to send */ - unsigned int data_xfered; /* Bytes acked by BLKEND irq */ - int got_dataend; - int user_pages; -}; - -struct msmsdcc_stats { - unsigned int reqs; - unsigned int cmds; - unsigned int cmdpoll_hits; - unsigned int cmdpoll_misses; -}; - -struct msmsdcc_host { - struct resource *cmd_irqres; - struct resource *memres; - struct resource *dmares; - void __iomem *base; - int pdev_id; - unsigned int stat_irq; - - struct msmsdcc_curr_req curr; - - struct mmc_host *mmc; - struct clk *clk; /* main MMC bus clock */ - struct clk *pclk; /* SDCC peripheral bus clock */ - unsigned int clks_on; /* set if clocks are enabled */ - struct timer_list busclk_timer; - - unsigned int eject; /* eject state */ - - spinlock_t lock; - - unsigned int clk_rate; /* Current clock rate */ - unsigned int pclk_rate; - - u32 pwr; - u32 saved_irq0mask; /* MMCIMASK0 reg value */ - struct msm_mmc_platform_data *plat; - - struct timer_list timer; - unsigned int oldstat; - - struct msmsdcc_dma_data dma; - struct msmsdcc_pio_data pio; - int cmdpoll; - struct msmsdcc_stats stats; - - struct tasklet_struct dma_tlet; - /* Command parameters */ - unsigned int cmd_timeout; - unsigned int cmd_pio_irqmask; - unsigned int cmd_datactrl; - struct mmc_command *cmd_cmd; - u32 cmd_c; - bool gpio_config_status; - - bool prog_scan; - bool prog_enable; -}; - -#endif diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 5316d9b9e7b4..317d709f7550 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -281,7 +281,7 @@ static inline void buffer_swap32(u32 *buf, int len) int i; for (i = 0; i < ((len + 3) / 4); i++) { - st_le32(buf, *buf); + *buf = swab32(*buf); buf++; } } diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index f84cfb01716d..9df2b6801f76 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -222,10 +222,6 @@ struct omap_hsmmc_host { struct omap_hsmmc_next next_data; struct omap_hsmmc_platform_data *pdata; - /* To handle board related suspend/resume functionality for MMC */ - int (*suspend)(struct device *dev); - int (*resume)(struct device *dev); - /* return MMC cover switch state, can be NULL if not supported. * * possible return values: @@ -234,12 +230,7 @@ struct omap_hsmmc_host { */ int (*get_cover_state)(struct device *dev); - /* Card detection IRQs */ - int card_detect_irq; - int (*card_detect)(struct device *dev); - int (*get_ro)(struct device *dev); - }; struct omap_mmc_of_data { @@ -256,13 +247,6 @@ static int omap_hsmmc_card_detect(struct device *dev) return mmc_gpio_get_cd(host->mmc); } -static int omap_hsmmc_get_wp(struct device *dev) -{ - struct omap_hsmmc_host *host = dev_get_drvdata(dev); - - return mmc_gpio_get_ro(host->mmc); -} - static int omap_hsmmc_get_cover_state(struct device *dev) { struct omap_hsmmc_host *host = dev_get_drvdata(dev); @@ -434,7 +418,7 @@ static inline int omap_hsmmc_have_reg(void) #endif -static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id); +static irqreturn_t omap_hsmmc_cover_irq(int irq, void *dev_id); static int omap_hsmmc_gpio_init(struct mmc_host *mmc, struct omap_hsmmc_host *host, @@ -442,29 +426,25 @@ static int omap_hsmmc_gpio_init(struct mmc_host *mmc, { int ret; - if (gpio_is_valid(pdata->switch_pin)) { - if (pdata->cover) - host->get_cover_state = - omap_hsmmc_get_cover_state; - else - host->card_detect = omap_hsmmc_card_detect; - host->card_detect_irq = - gpio_to_irq(pdata->switch_pin); - mmc_gpio_set_cd_isr(mmc, omap_hsmmc_detect); - ret = mmc_gpio_request_cd(mmc, pdata->switch_pin, 0); + if (gpio_is_valid(pdata->gpio_cod)) { + ret = mmc_gpio_request_cd(mmc, pdata->gpio_cod, 0); if (ret) return ret; - } else { - pdata->switch_pin = -EINVAL; + + host->get_cover_state = omap_hsmmc_get_cover_state; + mmc_gpio_set_cd_isr(mmc, omap_hsmmc_cover_irq); + } else if (gpio_is_valid(pdata->gpio_cd)) { + ret = mmc_gpio_request_cd(mmc, pdata->gpio_cd, 0); + if (ret) + return ret; + + host->card_detect = omap_hsmmc_card_detect; } if (gpio_is_valid(pdata->gpio_wp)) { - host->get_ro = omap_hsmmc_get_wp; ret = mmc_gpio_request_ro(mmc, pdata->gpio_wp); if (ret) return ret; - } else { - pdata->gpio_wp = -EINVAL; } return 0; @@ -882,6 +862,8 @@ static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_req return; host->mrq = NULL; mmc_request_done(host->mmc, mrq); + pm_runtime_mark_last_busy(host->dev); + pm_runtime_put_autosuspend(host->dev); } /* @@ -1252,26 +1234,16 @@ static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host) } /* - * irq handler to notify the core about card insertion/removal + * irq handler when (cell-phone) cover is mounted/removed */ -static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id) +static irqreturn_t omap_hsmmc_cover_irq(int irq, void *dev_id) { struct omap_hsmmc_host *host = dev_id; - int carddetect; sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch"); - if (host->card_detect) - carddetect = host->card_detect(host->dev); - else { - omap_hsmmc_protect_card(host); - carddetect = -ENOSYS; - } - - if (carddetect) - mmc_detect_change(host->mmc, (HZ * 200) / 1000); - else - mmc_detect_change(host->mmc, (HZ * 50) / 1000); + omap_hsmmc_protect_card(host); + mmc_detect_change(host->mmc, (HZ * 200) / 1000); return IRQ_HANDLED; } @@ -1305,6 +1277,8 @@ static void omap_hsmmc_dma_callback(void *param) host->mrq = NULL; mmc_request_done(host->mmc, mrq); + pm_runtime_mark_last_busy(host->dev); + pm_runtime_put_autosuspend(host->dev); } } @@ -1537,6 +1511,7 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) BUG_ON(host->req_in_progress); BUG_ON(host->dma_ch != -1); + pm_runtime_get_sync(host->dev); if (host->protect_card) { if (host->reqs_blocked < 3) { /* @@ -1553,6 +1528,8 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) req->data->error = -EBADF; req->cmd->retries = 0; mmc_request_done(mmc, req); + pm_runtime_mark_last_busy(host->dev); + pm_runtime_put_autosuspend(host->dev); return; } else if (host->reqs_blocked) host->reqs_blocked = 0; @@ -1566,6 +1543,8 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) req->data->error = err; host->mrq = NULL; mmc_request_done(mmc, req); + pm_runtime_mark_last_busy(host->dev); + pm_runtime_put_autosuspend(host->dev); return; } if (req->sbc && !(host->flags & AUTO_CMD23)) { @@ -1641,15 +1620,6 @@ static int omap_hsmmc_get_cd(struct mmc_host *mmc) return host->card_detect(host->dev); } -static int omap_hsmmc_get_ro(struct mmc_host *mmc) -{ - struct omap_hsmmc_host *host = mmc_priv(mmc); - - if (!host->get_ro) - return -ENOSYS; - return host->get_ro(host->dev); -} - static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card) { struct omap_hsmmc_host *host = mmc_priv(mmc); @@ -1778,25 +1748,6 @@ static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host) set_sd_bus_power(host); } -static int omap_hsmmc_enable_fclk(struct mmc_host *mmc) -{ - struct omap_hsmmc_host *host = mmc_priv(mmc); - - pm_runtime_get_sync(host->dev); - - return 0; -} - -static int omap_hsmmc_disable_fclk(struct mmc_host *mmc) -{ - struct omap_hsmmc_host *host = mmc_priv(mmc); - - pm_runtime_mark_last_busy(host->dev); - pm_runtime_put_autosuspend(host->dev); - - return 0; -} - static int omap_hsmmc_multi_io_quirk(struct mmc_card *card, unsigned int direction, int blk_size) { @@ -1808,14 +1759,12 @@ static int omap_hsmmc_multi_io_quirk(struct mmc_card *card, } static struct mmc_host_ops omap_hsmmc_ops = { - .enable = omap_hsmmc_enable_fclk, - .disable = omap_hsmmc_disable_fclk, .post_req = omap_hsmmc_post_req, .pre_req = omap_hsmmc_pre_req, .request = omap_hsmmc_request, .set_ios = omap_hsmmc_set_ios, .get_cd = omap_hsmmc_get_cd, - .get_ro = omap_hsmmc_get_ro, + .get_ro = mmc_gpio_get_ro, .init_card = omap_hsmmc_init_card, .enable_sdio_irq = omap_hsmmc_enable_sdio_irq, }; @@ -1937,7 +1886,8 @@ static struct omap_hsmmc_platform_data *of_get_hsmmc_pdata(struct device *dev) if (of_find_property(np, "ti,dual-volt", NULL)) pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT; - pdata->switch_pin = -EINVAL; + pdata->gpio_cd = -EINVAL; + pdata->gpio_cod = -EINVAL; pdata->gpio_wp = -EINVAL; if (of_find_property(np, "ti,non-removable", NULL)) { @@ -2179,9 +2129,9 @@ static int omap_hsmmc_probe(struct platform_device *pdev) if (ret < 0) goto err_slot_name; } - if (host->card_detect_irq && host->get_cover_state) { + if (host->get_cover_state) { ret = device_create_file(&mmc->class_dev, - &dev_attr_cover_switch); + &dev_attr_cover_switch); if (ret < 0) goto err_slot_name; } @@ -2236,7 +2186,7 @@ static int omap_hsmmc_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int omap_hsmmc_suspend(struct device *dev) { struct omap_hsmmc_host *host = dev_get_drvdata(dev); @@ -2292,10 +2242,6 @@ static int omap_hsmmc_resume(struct device *dev) pm_runtime_put_autosuspend(host->dev); return 0; } - -#else -#define omap_hsmmc_suspend NULL -#define omap_hsmmc_resume NULL #endif static int omap_hsmmc_runtime_suspend(struct device *dev) @@ -2376,8 +2322,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev) } static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { - .suspend = omap_hsmmc_suspend, - .resume = omap_hsmmc_resume, + SET_SYSTEM_SLEEP_PM_OPS(omap_hsmmc_suspend, omap_hsmmc_resume) .runtime_suspend = omap_hsmmc_runtime_suspend, .runtime_resume = omap_hsmmc_runtime_resume, }; diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index a45ed39d062c..22d929fa3371 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -40,7 +40,6 @@ #include <linux/mmc/host.h> #include <linux/mmc/pm.h> #include <linux/mmc/slot-gpio.h> -#include <linux/mmc/sdhci.h> #include "sdhci.h" diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c index 34bb8f92586e..2bd90fb35c75 100644 --- a/drivers/mmc/host/sdhci-bcm-kona.c +++ b/drivers/mmc/host/sdhci-bcm-kona.c @@ -54,7 +54,6 @@ struct sdhci_bcm_kona_dev { struct mutex write_lock; /* protect back to back writes */ - struct clk *external_clk; }; @@ -175,24 +174,6 @@ static void sdhci_bcm_kona_card_event(struct sdhci_host *host) } } -/* - * Get the base clock. Use central clock source for now. Not sure if different - * clock speed to each dev is allowed - */ -static unsigned int sdhci_bcm_kona_get_max_clk(struct sdhci_host *host) -{ - struct sdhci_bcm_kona_dev *kona_dev; - struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host); - kona_dev = sdhci_pltfm_priv(pltfm_priv); - - return host->mmc->f_max; -} - -static unsigned int sdhci_bcm_kona_get_timeout_clock(struct sdhci_host *host) -{ - return sdhci_bcm_kona_get_max_clk(host); -} - static void sdhci_bcm_kona_init_74_clocks(struct sdhci_host *host, u8 power_mode) { @@ -207,8 +188,8 @@ static void sdhci_bcm_kona_init_74_clocks(struct sdhci_host *host, static struct sdhci_ops sdhci_bcm_kona_ops = { .set_clock = sdhci_set_clock, - .get_max_clock = sdhci_bcm_kona_get_max_clk, - .get_timeout_clock = sdhci_bcm_kona_get_timeout_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .get_timeout_clock = sdhci_pltfm_clk_get_max_clock, .platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, @@ -264,21 +245,21 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev) goto err_pltfm_free; } - /* Get and enable the external clock */ - kona_dev->external_clk = devm_clk_get(dev, NULL); - if (IS_ERR(kona_dev->external_clk)) { - dev_err(dev, "Failed to get external clock\n"); - ret = PTR_ERR(kona_dev->external_clk); + /* Get and enable the core clock */ + pltfm_priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(pltfm_priv->clk)) { + dev_err(dev, "Failed to get core clock\n"); + ret = PTR_ERR(pltfm_priv->clk); goto err_pltfm_free; } - if (clk_set_rate(kona_dev->external_clk, host->mmc->f_max) != 0) { - dev_err(dev, "Failed to set rate external clock\n"); + if (clk_set_rate(pltfm_priv->clk, host->mmc->f_max) != 0) { + dev_err(dev, "Failed to set rate core clock\n"); goto err_pltfm_free; } - if (clk_prepare_enable(kona_dev->external_clk) != 0) { - dev_err(dev, "Failed to enable external clock\n"); + if (clk_prepare_enable(pltfm_priv->clk) != 0) { + dev_err(dev, "Failed to enable core clock\n"); goto err_pltfm_free; } @@ -333,7 +314,7 @@ err_reset: sdhci_bcm_kona_sd_reset(host); err_clk_disable: - clk_disable_unprepare(kona_dev->external_clk); + clk_disable_unprepare(pltfm_priv->clk); err_pltfm_free: sdhci_pltfm_free(pdev); @@ -342,22 +323,6 @@ err_pltfm_free: return ret; } -static int sdhci_bcm_kona_remove(struct platform_device *pdev) -{ - struct sdhci_host *host = platform_get_drvdata(pdev); - struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host); - struct sdhci_bcm_kona_dev *kona_dev = sdhci_pltfm_priv(pltfm_priv); - int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); - - sdhci_remove_host(host, dead); - - clk_disable_unprepare(kona_dev->external_clk); - - sdhci_pltfm_free(pdev); - - return 0; -} - static struct platform_driver sdhci_bcm_kona_driver = { .driver = { .name = "sdhci-kona", @@ -365,7 +330,7 @@ static struct platform_driver sdhci_bcm_kona_driver = { .of_match_table = sdhci_bcm_kona_of_match, }, .probe = sdhci_bcm_kona_probe, - .remove = sdhci_bcm_kona_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_bcm_kona_driver); diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c index 439d259fdf1d..0ef0343c603a 100644 --- a/drivers/mmc/host/sdhci-bcm2835.c +++ b/drivers/mmc/host/sdhci-bcm2835.c @@ -180,11 +180,6 @@ err: return ret; } -static int bcm2835_sdhci_remove(struct platform_device *pdev) -{ - return sdhci_pltfm_unregister(pdev); -} - static const struct of_device_id bcm2835_sdhci_of_match[] = { { .compatible = "brcm,bcm2835-sdhci" }, { } @@ -198,7 +193,7 @@ static struct platform_driver bcm2835_sdhci_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = bcm2835_sdhci_probe, - .remove = bcm2835_sdhci_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(bcm2835_sdhci_driver); diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c index a7935a8d0922..59f2923f8054 100644 --- a/drivers/mmc/host/sdhci-cns3xxx.c +++ b/drivers/mmc/host/sdhci-cns3xxx.c @@ -98,18 +98,13 @@ static int sdhci_cns3xxx_probe(struct platform_device *pdev) return sdhci_pltfm_register(pdev, &sdhci_cns3xxx_pdata, 0); } -static int sdhci_cns3xxx_remove(struct platform_device *pdev) -{ - return sdhci_pltfm_unregister(pdev); -} - static struct platform_driver sdhci_cns3xxx_driver = { .driver = { .name = "sdhci-cns3xxx", .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_cns3xxx_probe, - .remove = sdhci_cns3xxx_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_cns3xxx_driver); diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c index ca969d271a27..407c21f152b2 100644 --- a/drivers/mmc/host/sdhci-dove.c +++ b/drivers/mmc/host/sdhci-dove.c @@ -28,10 +28,6 @@ #include "sdhci-pltfm.h" -struct sdhci_dove_priv { - struct clk *clk; -}; - static u16 sdhci_dove_readw(struct sdhci_host *host, int reg) { u16 ret; @@ -84,27 +80,17 @@ static int sdhci_dove_probe(struct platform_device *pdev) { struct sdhci_host *host; struct sdhci_pltfm_host *pltfm_host; - struct sdhci_dove_priv *priv; int ret; - priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_dove_priv), - GFP_KERNEL); - if (!priv) { - dev_err(&pdev->dev, "unable to allocate private data"); - return -ENOMEM; - } - - priv->clk = devm_clk_get(&pdev->dev, NULL); - host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata, 0); if (IS_ERR(host)) return PTR_ERR(host); pltfm_host = sdhci_priv(host); - pltfm_host->priv = priv; + pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); - if (!IS_ERR(priv->clk)) - clk_prepare_enable(priv->clk); + if (!IS_ERR(pltfm_host->clk)) + clk_prepare_enable(pltfm_host->clk); ret = mmc_of_parse(host->mmc); if (ret) @@ -117,26 +103,11 @@ static int sdhci_dove_probe(struct platform_device *pdev) return 0; err_sdhci_add: - if (!IS_ERR(priv->clk)) - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(pltfm_host->clk); sdhci_pltfm_free(pdev); return ret; } -static int sdhci_dove_remove(struct platform_device *pdev) -{ - struct sdhci_host *host = platform_get_drvdata(pdev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_dove_priv *priv = pltfm_host->priv; - - sdhci_pltfm_unregister(pdev); - - if (!IS_ERR(priv->clk)) - clk_disable_unprepare(priv->clk); - - return 0; -} - static const struct of_device_id sdhci_dove_of_match_table[] = { { .compatible = "marvell,dove-sdhci", }, {} @@ -150,7 +121,7 @@ static struct platform_driver sdhci_dove_driver = { .of_match_table = sdhci_dove_of_match_table, }, .probe = sdhci_dove_probe, - .remove = sdhci_dove_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_dove_driver); diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 10ef8244a239..82f512d87cb8 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -416,7 +416,7 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) new_val |= ESDHC_VENDOR_SPEC_FRC_SDCLK_ON; else new_val &= ~ESDHC_VENDOR_SPEC_FRC_SDCLK_ON; - writel(new_val, host->ioaddr + ESDHC_VENDOR_SPEC); + writel(new_val, host->ioaddr + ESDHC_VENDOR_SPEC); return; case SDHCI_HOST_CONTROL2: new_val = readl(host->ioaddr + ESDHC_VENDOR_SPEC); @@ -864,6 +864,7 @@ static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { #ifdef CONFIG_OF static int sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, + struct sdhci_host *host, struct esdhc_platform_data *boarddata) { struct device_node *np = pdev->dev.of_node; @@ -900,11 +901,14 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, if (of_property_read_u32(np, "fsl,delay-line", &boarddata->delay_line)) boarddata->delay_line = 0; + mmc_of_parse_voltage(np, &host->ocr_mask); + return 0; } #else static inline int sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, + struct sdhci_host *host, struct esdhc_platform_data *boarddata) { return -ENODEV; @@ -999,7 +1003,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) host->ioaddr + ESDHC_TUNING_CTRL); boarddata = &imx_data->boarddata; - if (sdhci_esdhc_imx_probe_dt(pdev, boarddata) < 0) { + if (sdhci_esdhc_imx_probe_dt(pdev, host, boarddata) < 0) { if (!host->mmc->parent->platform_data) { dev_err(mmc_dev(host->mmc), "no board data!\n"); err = -EINVAL; @@ -1009,40 +1013,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) host->mmc->parent->platform_data); } - /* write_protect */ - if (boarddata->wp_type == ESDHC_WP_GPIO) { - err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio); - if (err) { - dev_err(mmc_dev(host->mmc), - "failed to request write-protect gpio!\n"); - goto disable_clk; - } - host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; - } - /* card_detect */ - switch (boarddata->cd_type) { - case ESDHC_CD_GPIO: - err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0); - if (err) { - dev_err(mmc_dev(host->mmc), - "failed to request card-detect gpio!\n"); - goto disable_clk; - } - /* fall through */ - - case ESDHC_CD_CONTROLLER: - /* we have a working card_detect back */ + if (boarddata->cd_type == ESDHC_CD_CONTROLLER) host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; - break; - - case ESDHC_CD_PERMANENT: - host->mmc->caps |= MMC_CAP_NONREMOVABLE; - break; - - case ESDHC_CD_NONE: - break; - } switch (boarddata->max_bus_width) { case 8: @@ -1075,6 +1048,11 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; } + /* call to generic mmc_of_parse to support additional capabilities */ + err = mmc_of_parse(host->mmc); + if (err) + goto disable_clk; + err = sdhci_add_host(host); if (err) goto disable_clk; diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c new file mode 100644 index 000000000000..3b423b0ad8e7 --- /dev/null +++ b/drivers/mmc/host/sdhci-iproc.c @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2014 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * iProc SDHCI platform driver + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/mmc/host.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include "sdhci-pltfm.h" + +struct sdhci_iproc_data { + const struct sdhci_pltfm_data *pdata; + u32 caps; + u32 caps1; +}; + +struct sdhci_iproc_host { + const struct sdhci_iproc_data *data; + u32 shadow_cmd; + u32 shadow_blk; +}; + +#define REG_OFFSET_IN_BITS(reg) ((reg) << 3 & 0x18) + +static inline u32 sdhci_iproc_readl(struct sdhci_host *host, int reg) +{ + u32 val = readl(host->ioaddr + reg); + + pr_debug("%s: readl [0x%02x] 0x%08x\n", + mmc_hostname(host->mmc), reg, val); + return val; +} + +static u16 sdhci_iproc_readw(struct sdhci_host *host, int reg) +{ + u32 val = sdhci_iproc_readl(host, (reg & ~3)); + u16 word = val >> REG_OFFSET_IN_BITS(reg) & 0xffff; + return word; +} + +static u8 sdhci_iproc_readb(struct sdhci_host *host, int reg) +{ + u32 val = sdhci_iproc_readl(host, (reg & ~3)); + u8 byte = val >> REG_OFFSET_IN_BITS(reg) & 0xff; + return byte; +} + +static inline void sdhci_iproc_writel(struct sdhci_host *host, u32 val, int reg) +{ + pr_debug("%s: writel [0x%02x] 0x%08x\n", + mmc_hostname(host->mmc), reg, val); + + writel(val, host->ioaddr + reg); + + if (host->clock <= 400000) { + /* Round up to micro-second four SD clock delay */ + if (host->clock) + udelay((4 * 1000000 + host->clock - 1) / host->clock); + else + udelay(10); + } +} + +/* + * The Arasan has a bugette whereby it may lose the content of successive + * writes to the same register that are within two SD-card clock cycles of + * each other (a clock domain crossing problem). The data + * register does not have this problem, which is just as well - otherwise we'd + * have to nobble the DMA engine too. + * + * This wouldn't be a problem with the code except that we can only write the + * controller with 32-bit writes. So two different 16-bit registers are + * written back to back creates the problem. + * + * In reality, this only happens when SDHCI_BLOCK_SIZE and SDHCI_BLOCK_COUNT + * are written followed by SDHCI_TRANSFER_MODE and SDHCI_COMMAND. + * The BLOCK_SIZE and BLOCK_COUNT are meaningless until a command issued so + * the work around can be further optimized. We can keep shadow values of + * BLOCK_SIZE, BLOCK_COUNT, and TRANSFER_MODE until a COMMAND is issued. + * Then, write the BLOCK_SIZE+BLOCK_COUNT in a single 32-bit write followed + * by the TRANSFER+COMMAND in another 32-bit write. + */ +static void sdhci_iproc_writew(struct sdhci_host *host, u16 val, int reg) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_iproc_host *iproc_host = sdhci_pltfm_priv(pltfm_host); + u32 word_shift = REG_OFFSET_IN_BITS(reg); + u32 mask = 0xffff << word_shift; + u32 oldval, newval; + + if (reg == SDHCI_COMMAND) { + /* Write the block now as we are issuing a command */ + if (iproc_host->shadow_blk != 0) { + sdhci_iproc_writel(host, iproc_host->shadow_blk, + SDHCI_BLOCK_SIZE); + iproc_host->shadow_blk = 0; + } + oldval = iproc_host->shadow_cmd; + } else if (reg == SDHCI_BLOCK_SIZE || reg == SDHCI_BLOCK_COUNT) { + /* Block size and count are stored in shadow reg */ + oldval = iproc_host->shadow_blk; + } else { + /* Read reg, all other registers are not shadowed */ + oldval = sdhci_iproc_readl(host, (reg & ~3)); + } + newval = (oldval & ~mask) | (val << word_shift); + + if (reg == SDHCI_TRANSFER_MODE) { + /* Save the transfer mode until the command is issued */ + iproc_host->shadow_cmd = newval; + } else if (reg == SDHCI_BLOCK_SIZE || reg == SDHCI_BLOCK_COUNT) { + /* Save the block info until the command is issued */ + iproc_host->shadow_blk = newval; + } else { + /* Command or other regular 32-bit write */ + sdhci_iproc_writel(host, newval, reg & ~3); + } +} + +static void sdhci_iproc_writeb(struct sdhci_host *host, u8 val, int reg) +{ + u32 oldval = sdhci_iproc_readl(host, (reg & ~3)); + u32 byte_shift = REG_OFFSET_IN_BITS(reg); + u32 mask = 0xff << byte_shift; + u32 newval = (oldval & ~mask) | (val << byte_shift); + + sdhci_iproc_writel(host, newval, reg & ~3); +} + +static const struct sdhci_ops sdhci_iproc_ops = { + .read_l = sdhci_iproc_readl, + .read_w = sdhci_iproc_readw, + .read_b = sdhci_iproc_readb, + .write_l = sdhci_iproc_writel, + .write_w = sdhci_iproc_writew, + .write_b = sdhci_iproc_writeb, + .set_clock = sdhci_set_clock, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, + .set_bus_width = sdhci_set_bus_width, + .reset = sdhci_reset, + .set_uhs_signaling = sdhci_set_uhs_signaling, +}; + +static const struct sdhci_pltfm_data sdhci_iproc_pltfm_data = { + .quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK, + .quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN, + .ops = &sdhci_iproc_ops, +}; + +static const struct sdhci_iproc_data iproc_data = { + .pdata = &sdhci_iproc_pltfm_data, + .caps = 0x05E90000, + .caps1 = 0x00000064, +}; + +static const struct of_device_id sdhci_iproc_of_match[] = { + { .compatible = "brcm,sdhci-iproc-cygnus", .data = &iproc_data }, + { } +}; +MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match); + +static int sdhci_iproc_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + const struct sdhci_iproc_data *iproc_data; + struct sdhci_host *host; + struct sdhci_iproc_host *iproc_host; + struct sdhci_pltfm_host *pltfm_host; + int ret; + + match = of_match_device(sdhci_iproc_of_match, &pdev->dev); + if (!match) + return -EINVAL; + iproc_data = match->data; + + host = sdhci_pltfm_init(pdev, iproc_data->pdata, sizeof(*iproc_host)); + if (IS_ERR(host)) + return PTR_ERR(host); + + pltfm_host = sdhci_priv(host); + iproc_host = sdhci_pltfm_priv(pltfm_host); + + iproc_host->data = iproc_data; + + mmc_of_parse(host->mmc); + sdhci_get_of_property(pdev); + + /* Enable EMMC 1/8V DDR capable */ + host->mmc->caps |= MMC_CAP_1_8V_DDR; + + pltfm_host->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pltfm_host->clk)) { + ret = PTR_ERR(pltfm_host->clk); + goto err; + } + + if (iproc_host->data->pdata->quirks & SDHCI_QUIRK_MISSING_CAPS) { + host->caps = iproc_host->data->caps; + host->caps1 = iproc_host->data->caps1; + } + + return sdhci_add_host(host); + +err: + sdhci_pltfm_free(pdev); + return ret; +} + +static int sdhci_iproc_remove(struct platform_device *pdev) +{ + return sdhci_pltfm_unregister(pdev); +} + +static struct platform_driver sdhci_iproc_driver = { + .driver = { + .name = "sdhci-iproc", + .of_match_table = sdhci_iproc_of_match, + .pm = SDHCI_PLTFM_PMOPS, + }, + .probe = sdhci_iproc_probe, + .remove = sdhci_iproc_remove, +}; +module_platform_driver(sdhci_iproc_driver); + +MODULE_AUTHOR("Broadcom"); +MODULE_DESCRIPTION("IPROC SDHCI driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 3d32ce896b09..4a09f7608c66 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -22,6 +22,11 @@ #include "sdhci-pltfm.h" +#define CORE_MCI_VERSION 0x50 +#define CORE_VERSION_MAJOR_SHIFT 28 +#define CORE_VERSION_MAJOR_MASK (0xf << CORE_VERSION_MAJOR_SHIFT) +#define CORE_VERSION_MINOR_MASK 0xff + #define CORE_HC_MODE 0x78 #define HC_MODE_EN 0x1 #define CORE_POWER 0x0 @@ -41,6 +46,8 @@ #define CORE_VENDOR_SPEC 0x10c #define CORE_CLK_PWRSAVE BIT(1) +#define CORE_VENDOR_SPEC_CAPABILITIES0 0x11c + #define CDR_SELEXT_SHIFT 20 #define CDR_SELEXT_MASK (0xf << CDR_SELEXT_SHIFT) #define CMUX_SHIFT_PHASE_SHIFT 24 @@ -426,7 +433,9 @@ static int sdhci_msm_probe(struct platform_device *pdev) struct sdhci_msm_host *msm_host; struct resource *core_memres; int ret; - u16 host_version; + u16 host_version, core_minor; + u32 core_version, caps; + u8 core_major; msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL); if (!msm_host) @@ -516,6 +525,24 @@ static int sdhci_msm_probe(struct platform_device *pdev) host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT)); + core_version = readl_relaxed(msm_host->core_mem + CORE_MCI_VERSION); + core_major = (core_version & CORE_VERSION_MAJOR_MASK) >> + CORE_VERSION_MAJOR_SHIFT; + core_minor = core_version & CORE_VERSION_MINOR_MASK; + dev_dbg(&pdev->dev, "MCI Version: 0x%08x, major: 0x%04x, minor: 0x%02x\n", + core_version, core_major, core_minor); + + /* + * Support for some capabilities is not advertised by newer + * controller versions and must be explicitly enabled. + */ + if (core_major >= 1 && core_minor != 0x11 && core_minor != 0x12) { + caps = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES); + caps |= SDHCI_CAN_VDD_300 | SDHCI_CAN_DO_8BIT; + writel_relaxed(caps, host->ioaddr + + CORE_VENDOR_SPEC_CAPABILITIES0); + } + ret = sdhci_add_host(host); if (ret) goto clk_disable; diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index bcb51e9dfdcd..6287d426c96b 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -173,6 +173,12 @@ static int sdhci_arasan_probe(struct platform_device *pdev) pltfm_host->priv = sdhci_arasan; pltfm_host->clk = clk_xin; + ret = mmc_of_parse(host->mmc); + if (ret) { + dev_err(&pdev->dev, "parsing dt failed (%u)\n", ret); + goto clk_disable_all; + } + ret = sdhci_add_host(host); if (ret) goto err_pltfm_free; @@ -195,7 +201,6 @@ static int sdhci_arasan_remove(struct platform_device *pdev) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_arasan_data *sdhci_arasan = pltfm_host->priv; - clk_disable_unprepare(pltfm_host->clk); clk_disable_unprepare(sdhci_arasan->clk_ahb); return sdhci_pltfm_unregister(pdev); diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 17fe02ed6672..22e9111b11ff 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -386,11 +386,6 @@ static int sdhci_esdhc_probe(struct platform_device *pdev) return ret; } -static int sdhci_esdhc_remove(struct platform_device *pdev) -{ - return sdhci_pltfm_unregister(pdev); -} - static const struct of_device_id sdhci_esdhc_of_match[] = { { .compatible = "fsl,mpc8379-esdhc" }, { .compatible = "fsl,mpc8536-esdhc" }, @@ -406,7 +401,7 @@ static struct platform_driver sdhci_esdhc_driver = { .pm = ESDHC_PMOPS, }, .probe = sdhci_esdhc_probe, - .remove = sdhci_esdhc_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_esdhc_driver); diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c index be479279a1d5..4079a96ad37e 100644 --- a/drivers/mmc/host/sdhci-of-hlwd.c +++ b/drivers/mmc/host/sdhci-of-hlwd.c @@ -75,11 +75,6 @@ static int sdhci_hlwd_probe(struct platform_device *pdev) return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata, 0); } -static int sdhci_hlwd_remove(struct platform_device *pdev) -{ - return sdhci_pltfm_unregister(pdev); -} - static const struct of_device_id sdhci_hlwd_of_match[] = { { .compatible = "nintendo,hollywood-sdhci" }, { } @@ -93,7 +88,7 @@ static struct platform_driver sdhci_hlwd_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_hlwd_probe, - .remove = sdhci_hlwd_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_hlwd_driver); diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 29eaff78238e..7a3fc16d0a6c 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -650,6 +650,7 @@ static int rtsx_probe_slot(struct sdhci_pci_slot *slot) static const struct sdhci_pci_fixes sdhci_rtsx = { .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_BROKEN_64_BIT_DMA | SDHCI_QUIRK2_BROKEN_DDR50, .probe_slot = rtsx_probe_slot, }; diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index c5b01d6bb85d..a207f5aaf62f 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -75,43 +75,41 @@ void sdhci_get_of_property(struct platform_device *pdev) u32 bus_width; int size; - if (of_device_is_available(np)) { - if (of_get_property(np, "sdhci,auto-cmd12", NULL)) - host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; + if (of_get_property(np, "sdhci,auto-cmd12", NULL)) + host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; - if (of_get_property(np, "sdhci,1-bit-only", NULL) || - (of_property_read_u32(np, "bus-width", &bus_width) == 0 && - bus_width == 1)) - host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; + if (of_get_property(np, "sdhci,1-bit-only", NULL) || + (of_property_read_u32(np, "bus-width", &bus_width) == 0 && + bus_width == 1)) + host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA; - if (sdhci_of_wp_inverted(np)) - host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT; + if (sdhci_of_wp_inverted(np)) + host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT; - if (of_get_property(np, "broken-cd", NULL)) - host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; + if (of_get_property(np, "broken-cd", NULL)) + host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; - if (of_get_property(np, "no-1-8-v", NULL)) - host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; + if (of_get_property(np, "no-1-8-v", NULL)) + host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; - if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) - host->quirks |= SDHCI_QUIRK_BROKEN_DMA; + if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) + host->quirks |= SDHCI_QUIRK_BROKEN_DMA; - if (of_device_is_compatible(np, "fsl,p2020-esdhc") || - of_device_is_compatible(np, "fsl,p1010-esdhc") || - of_device_is_compatible(np, "fsl,t4240-esdhc") || - of_device_is_compatible(np, "fsl,mpc8536-esdhc")) - host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; + if (of_device_is_compatible(np, "fsl,p2020-esdhc") || + of_device_is_compatible(np, "fsl,p1010-esdhc") || + of_device_is_compatible(np, "fsl,t4240-esdhc") || + of_device_is_compatible(np, "fsl,mpc8536-esdhc")) + host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; - clk = of_get_property(np, "clock-frequency", &size); - if (clk && size == sizeof(*clk) && *clk) - pltfm_host->clock = be32_to_cpup(clk); + clk = of_get_property(np, "clock-frequency", &size); + if (clk && size == sizeof(*clk) && *clk) + pltfm_host->clock = be32_to_cpup(clk); - if (of_find_property(np, "keep-power-in-suspend", NULL)) - host->mmc->pm_caps |= MMC_PM_KEEP_POWER; + if (of_find_property(np, "keep-power-in-suspend", NULL)) + host->mmc->pm_caps |= MMC_PM_KEEP_POWER; - if (of_find_property(np, "enable-sdio-wakeup", NULL)) - host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; - } + if (of_find_property(np, "enable-sdio-wakeup", NULL)) + host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; } #else void sdhci_get_of_property(struct platform_device *pdev) {} @@ -225,9 +223,11 @@ EXPORT_SYMBOL_GPL(sdhci_pltfm_register); int sdhci_pltfm_unregister(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); + clk_disable_unprepare(pltfm_host->clk); sdhci_pltfm_free(pdev); return 0; diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c index f6f82ec3618d..32848eb7ad80 100644 --- a/drivers/mmc/host/sdhci-sirf.c +++ b/drivers/mmc/host/sdhci-sirf.c @@ -20,17 +20,9 @@ #define SIRF_TUNING_COUNT 128 struct sdhci_sirf_priv { - struct clk *clk; int gpio_cd; }; -static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host); - return clk_get_rate(priv->clk); -} - static void sdhci_sirf_set_bus_width(struct sdhci_host *host, int width) { u8 ctrl; @@ -56,7 +48,7 @@ static int sdhci_sirf_execute_tuning(struct sdhci_host *host, u32 opcode) int tuning_seq_cnt = 3; u8 phase, tuned_phases[SIRF_TUNING_COUNT]; u8 tuned_phase_cnt = 0; - int rc, longest_range = 0; + int rc = 0, longest_range = 0; int start = -1, end = 0, tuning_value = -1, range = 0; u16 clock_setting; struct mmc_host *mmc = host->mmc; @@ -68,7 +60,7 @@ retry: phase = 0; do { sdhci_writel(host, - clock_setting | phase | (phase << 7) | (phase << 16), + clock_setting | phase, SDHCI_CLK_DELAY_SETTING); if (!mmc_send_tuning(mmc)) { @@ -102,7 +94,7 @@ retry: */ phase = tuning_value; sdhci_writel(host, - clock_setting | phase | (phase << 7) | (phase << 16), + clock_setting | phase, SDHCI_CLK_DELAY_SETTING); dev_dbg(mmc_dev(mmc), "%s: Setting the tuning phase to %d\n", @@ -122,7 +114,7 @@ retry: static struct sdhci_ops sdhci_sirf_ops = { .platform_execute_tuning = sdhci_sirf_execute_tuning, .set_clock = sdhci_set_clock, - .get_max_clock = sdhci_sirf_get_max_clk, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, .set_bus_width = sdhci_sirf_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, @@ -162,13 +154,13 @@ static int sdhci_sirf_probe(struct platform_device *pdev) return PTR_ERR(host); pltfm_host = sdhci_priv(host); + pltfm_host->clk = clk; priv = sdhci_pltfm_priv(pltfm_host); - priv->clk = clk; priv->gpio_cd = gpio_cd; sdhci_get_of_property(pdev); - ret = clk_prepare_enable(priv->clk); + ret = clk_prepare_enable(pltfm_host->clk); if (ret) goto err_clk_prepare; @@ -195,37 +187,24 @@ static int sdhci_sirf_probe(struct platform_device *pdev) err_request_cd: sdhci_remove_host(host, 0); err_sdhci_add: - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(pltfm_host->clk); err_clk_prepare: sdhci_pltfm_free(pdev); return ret; } -static int sdhci_sirf_remove(struct platform_device *pdev) -{ - struct sdhci_host *host = platform_get_drvdata(pdev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host); - - sdhci_pltfm_unregister(pdev); - - clk_disable_unprepare(priv->clk); - return 0; -} - #ifdef CONFIG_PM_SLEEP static int sdhci_sirf_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host); int ret; ret = sdhci_suspend_host(host); if (ret) return ret; - clk_disable(priv->clk); + clk_disable(pltfm_host->clk); return 0; } @@ -234,10 +213,9 @@ static int sdhci_sirf_resume(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host); int ret; - ret = clk_enable(priv->clk); + ret = clk_enable(pltfm_host->clk); if (ret) { dev_dbg(dev, "Resume: Error enabling clock\n"); return ret; @@ -264,7 +242,7 @@ static struct platform_driver sdhci_sirf_driver = { #endif }, .probe = sdhci_sirf_probe, - .remove = sdhci_sirf_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_sirf_driver); diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c index 22e58268545f..df088343d60f 100644 --- a/drivers/mmc/host/sdhci-spear.c +++ b/drivers/mmc/host/sdhci-spear.c @@ -26,14 +26,13 @@ #include <linux/pm.h> #include <linux/slab.h> #include <linux/mmc/host.h> -#include <linux/mmc/sdhci-spear.h> #include <linux/mmc/slot-gpio.h> #include <linux/io.h> #include "sdhci.h" struct spear_sdhci { struct clk *clk; - struct sdhci_plat_data *data; + int card_int_gpio; }; /* sdhci ops */ @@ -44,38 +43,20 @@ static const struct sdhci_ops sdhci_pltfm_ops = { .set_uhs_signaling = sdhci_set_uhs_signaling, }; -#ifdef CONFIG_OF -static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev) +static void sdhci_probe_config_dt(struct device_node *np, + struct spear_sdhci *host) { - struct device_node *np = pdev->dev.of_node; - struct sdhci_plat_data *pdata = NULL; int cd_gpio; cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); if (!gpio_is_valid(cd_gpio)) cd_gpio = -1; - /* If pdata is required */ - if (cd_gpio != -1) { - pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - dev_err(&pdev->dev, "DT: kzalloc failed\n"); - else - pdata->card_int_gpio = cd_gpio; - } - - return pdata; -} -#else -static struct sdhci_plat_data *sdhci_probe_config_dt(struct platform_device *pdev) -{ - return ERR_PTR(-ENOSYS); + host->card_int_gpio = cd_gpio; } -#endif static int sdhci_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; struct sdhci_host *host; struct resource *iomem; struct spear_sdhci *sdhci; @@ -124,28 +105,18 @@ static int sdhci_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "Error setting desired clk, clk=%lu\n", clk_get_rate(sdhci->clk)); - if (np) { - sdhci->data = sdhci_probe_config_dt(pdev); - if (IS_ERR(sdhci->data)) { - dev_err(&pdev->dev, "DT: Failed to get pdata\n"); - goto disable_clk; - } - } else { - sdhci->data = dev_get_platdata(&pdev->dev); - } - + sdhci_probe_config_dt(pdev->dev.of_node, sdhci); /* * It is optional to use GPIOs for sdhci card detection. If - * sdhci->data is NULL, then use original sdhci lines otherwise + * sdhci->card_int_gpio < 0, then use original sdhci lines otherwise * GPIO lines. We use the built-in GPIO support for this. */ - if (sdhci->data && sdhci->data->card_int_gpio >= 0) { - ret = mmc_gpio_request_cd(host->mmc, - sdhci->data->card_int_gpio, 0); + if (sdhci->card_int_gpio >= 0) { + ret = mmc_gpio_request_cd(host->mmc, sdhci->card_int_gpio, 0); if (ret < 0) { dev_dbg(&pdev->dev, "failed to request card-detect gpio%d\n", - sdhci->data->card_int_gpio); + sdhci->card_int_gpio); goto disable_clk; } } diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c index 882b07e9667e..682f2bb0f4bf 100644 --- a/drivers/mmc/host/sdhci-st.c +++ b/drivers/mmc/host/sdhci-st.c @@ -23,9 +23,295 @@ #include <linux/module.h> #include <linux/err.h> #include <linux/mmc/host.h> - +#include <linux/reset.h> #include "sdhci-pltfm.h" +struct st_mmc_platform_data { + struct reset_control *rstc; + void __iomem *top_ioaddr; +}; + +/* MMCSS glue logic to setup the HC on some ST SoCs (e.g. STiH407 family) */ + +#define ST_MMC_CCONFIG_REG_1 0x400 +#define ST_MMC_CCONFIG_TIMEOUT_CLK_UNIT BIT(24) +#define ST_MMC_CCONFIG_TIMEOUT_CLK_FREQ BIT(12) +#define ST_MMC_CCONFIG_TUNING_COUNT_DEFAULT BIT(8) +#define ST_MMC_CCONFIG_ASYNC_WAKEUP BIT(0) +#define ST_MMC_CCONFIG_1_DEFAULT \ + ((ST_MMC_CCONFIG_TIMEOUT_CLK_UNIT) | \ + (ST_MMC_CCONFIG_TIMEOUT_CLK_FREQ) | \ + (ST_MMC_CCONFIG_TUNING_COUNT_DEFAULT)) + +#define ST_MMC_CCONFIG_REG_2 0x404 +#define ST_MMC_CCONFIG_HIGH_SPEED BIT(28) +#define ST_MMC_CCONFIG_ADMA2 BIT(24) +#define ST_MMC_CCONFIG_8BIT BIT(20) +#define ST_MMC_CCONFIG_MAX_BLK_LEN 16 +#define MAX_BLK_LEN_1024 1 +#define MAX_BLK_LEN_2048 2 +#define BASE_CLK_FREQ_200 0xc8 +#define BASE_CLK_FREQ_100 0x64 +#define BASE_CLK_FREQ_50 0x32 +#define ST_MMC_CCONFIG_2_DEFAULT \ + (ST_MMC_CCONFIG_HIGH_SPEED | ST_MMC_CCONFIG_ADMA2 | \ + ST_MMC_CCONFIG_8BIT | \ + (MAX_BLK_LEN_1024 << ST_MMC_CCONFIG_MAX_BLK_LEN)) + +#define ST_MMC_CCONFIG_REG_3 0x408 +#define ST_MMC_CCONFIG_EMMC_SLOT_TYPE BIT(28) +#define ST_MMC_CCONFIG_64BIT BIT(24) +#define ST_MMC_CCONFIG_ASYNCH_INTR_SUPPORT BIT(20) +#define ST_MMC_CCONFIG_1P8_VOLT BIT(16) +#define ST_MMC_CCONFIG_3P0_VOLT BIT(12) +#define ST_MMC_CCONFIG_3P3_VOLT BIT(8) +#define ST_MMC_CCONFIG_SUSP_RES_SUPPORT BIT(4) +#define ST_MMC_CCONFIG_SDMA BIT(0) +#define ST_MMC_CCONFIG_3_DEFAULT \ + (ST_MMC_CCONFIG_ASYNCH_INTR_SUPPORT | \ + ST_MMC_CCONFIG_3P3_VOLT | \ + ST_MMC_CCONFIG_SUSP_RES_SUPPORT | \ + ST_MMC_CCONFIG_SDMA) + +#define ST_MMC_CCONFIG_REG_4 0x40c +#define ST_MMC_CCONFIG_D_DRIVER BIT(20) +#define ST_MMC_CCONFIG_C_DRIVER BIT(16) +#define ST_MMC_CCONFIG_A_DRIVER BIT(12) +#define ST_MMC_CCONFIG_DDR50 BIT(8) +#define ST_MMC_CCONFIG_SDR104 BIT(4) +#define ST_MMC_CCONFIG_SDR50 BIT(0) +#define ST_MMC_CCONFIG_4_DEFAULT 0 + +#define ST_MMC_CCONFIG_REG_5 0x410 +#define ST_MMC_CCONFIG_TUNING_FOR_SDR50 BIT(8) +#define RETUNING_TIMER_CNT_MAX 0xf +#define ST_MMC_CCONFIG_5_DEFAULT 0 + +/* I/O configuration for Arasan IP */ +#define ST_MMC_GP_OUTPUT 0x450 +#define ST_MMC_GP_OUTPUT_CD BIT(12) + +#define ST_MMC_STATUS_R 0x460 + +#define ST_TOP_MMC_DLY_FIX_OFF(x) (x - 0x8) + +/* TOP config registers to manage static and dynamic delay */ +#define ST_TOP_MMC_TX_CLK_DLY ST_TOP_MMC_DLY_FIX_OFF(0x8) +#define ST_TOP_MMC_RX_CLK_DLY ST_TOP_MMC_DLY_FIX_OFF(0xc) +/* MMC delay control register */ +#define ST_TOP_MMC_DLY_CTRL ST_TOP_MMC_DLY_FIX_OFF(0x18) +#define ST_TOP_MMC_DLY_CTRL_DLL_BYPASS_CMD BIT(0) +#define ST_TOP_MMC_DLY_CTRL_DLL_BYPASS_PH_SEL BIT(1) +#define ST_TOP_MMC_DLY_CTRL_TX_DLL_ENABLE BIT(8) +#define ST_TOP_MMC_DLY_CTRL_RX_DLL_ENABLE BIT(9) +#define ST_TOP_MMC_DLY_CTRL_ATUNE_NOT_CFG_DLY BIT(10) +#define ST_TOP_MMC_START_DLL_LOCK BIT(11) + +/* register to provide the phase-shift value for DLL */ +#define ST_TOP_MMC_TX_DLL_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x1c) +#define ST_TOP_MMC_RX_DLL_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x20) +#define ST_TOP_MMC_RX_CMD_STEP_DLY ST_TOP_MMC_DLY_FIX_OFF(0x24) + +/* phase shift delay on the tx clk 2.188ns */ +#define ST_TOP_MMC_TX_DLL_STEP_DLY_VALID 0x6 + +#define ST_TOP_MMC_DLY_MAX 0xf + +#define ST_TOP_MMC_DYN_DLY_CONF \ + (ST_TOP_MMC_DLY_CTRL_TX_DLL_ENABLE | \ + ST_TOP_MMC_DLY_CTRL_ATUNE_NOT_CFG_DLY | \ + ST_TOP_MMC_START_DLL_LOCK) + +/* + * For clock speeds greater than 90MHz, we need to check that the + * DLL procedure has finished before switching to ultra-speed modes. + */ +#define CLK_TO_CHECK_DLL_LOCK 90000000 + +static inline void st_mmcss_set_static_delay(void __iomem *ioaddr) +{ + if (!ioaddr) + return; + + writel_relaxed(0x0, ioaddr + ST_TOP_MMC_DLY_CTRL); + writel_relaxed(ST_TOP_MMC_DLY_MAX, + ioaddr + ST_TOP_MMC_TX_CLK_DLY); +} + +/** + * st_mmcss_cconfig: configure the Arasan HC inside the flashSS. + * @np: dt device node. + * @host: sdhci host + * Description: this function is to configure the Arasan host controller. + * On some ST SoCs, i.e. STiH407 family, the MMC devices inside a dedicated + * flashSS sub-system which needs to be configured to be compliant to eMMC 4.5 + * or eMMC4.3. This has to be done before registering the sdhci host. + */ +static void st_mmcss_cconfig(struct device_node *np, struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct mmc_host *mhost = host->mmc; + u32 cconf2, cconf3, cconf4, cconf5; + + if (!of_device_is_compatible(np, "st,sdhci-stih407")) + return; + + cconf2 = ST_MMC_CCONFIG_2_DEFAULT; + cconf3 = ST_MMC_CCONFIG_3_DEFAULT; + cconf4 = ST_MMC_CCONFIG_4_DEFAULT; + cconf5 = ST_MMC_CCONFIG_5_DEFAULT; + + writel_relaxed(ST_MMC_CCONFIG_1_DEFAULT, + host->ioaddr + ST_MMC_CCONFIG_REG_1); + + /* Set clock frequency, default to 50MHz if max-frequency is not + * provided */ + + switch (mhost->f_max) { + case 200000000: + clk_set_rate(pltfm_host->clk, mhost->f_max); + cconf2 |= BASE_CLK_FREQ_200; + break; + case 100000000: + clk_set_rate(pltfm_host->clk, mhost->f_max); + cconf2 |= BASE_CLK_FREQ_100; + break; + default: + clk_set_rate(pltfm_host->clk, 50000000); + cconf2 |= BASE_CLK_FREQ_50; + } + + writel_relaxed(cconf2, host->ioaddr + ST_MMC_CCONFIG_REG_2); + + if (mhost->caps & MMC_CAP_NONREMOVABLE) + cconf3 |= ST_MMC_CCONFIG_EMMC_SLOT_TYPE; + else + /* CARD _D ET_CTRL */ + writel_relaxed(ST_MMC_GP_OUTPUT_CD, + host->ioaddr + ST_MMC_GP_OUTPUT); + + if (mhost->caps & MMC_CAP_UHS_SDR50) { + /* use 1.8V */ + cconf3 |= ST_MMC_CCONFIG_1P8_VOLT; + cconf4 |= ST_MMC_CCONFIG_SDR50; + /* Use tuning */ + cconf5 |= ST_MMC_CCONFIG_TUNING_FOR_SDR50; + /* Max timeout for retuning */ + cconf5 |= RETUNING_TIMER_CNT_MAX; + } + + if (mhost->caps & MMC_CAP_UHS_SDR104) { + /* + * SDR104 implies the HC can support HS200 mode, so + * it's mandatory to use 1.8V + */ + cconf3 |= ST_MMC_CCONFIG_1P8_VOLT; + cconf4 |= ST_MMC_CCONFIG_SDR104; + /* Max timeout for retuning */ + cconf5 |= RETUNING_TIMER_CNT_MAX; + } + + if (mhost->caps & MMC_CAP_UHS_DDR50) + cconf4 |= ST_MMC_CCONFIG_DDR50; + + writel_relaxed(cconf3, host->ioaddr + ST_MMC_CCONFIG_REG_3); + writel_relaxed(cconf4, host->ioaddr + ST_MMC_CCONFIG_REG_4); + writel_relaxed(cconf5, host->ioaddr + ST_MMC_CCONFIG_REG_5); +} + +static inline void st_mmcss_set_dll(void __iomem *ioaddr) +{ + if (!ioaddr) + return; + + writel_relaxed(ST_TOP_MMC_DYN_DLY_CONF, ioaddr + ST_TOP_MMC_DLY_CTRL); + writel_relaxed(ST_TOP_MMC_TX_DLL_STEP_DLY_VALID, + ioaddr + ST_TOP_MMC_TX_DLL_STEP_DLY); +} + +static int st_mmcss_lock_dll(void __iomem *ioaddr) +{ + unsigned long curr, value; + unsigned long finish = jiffies + HZ; + + /* Checks if the DLL procedure is finished */ + do { + curr = jiffies; + value = readl(ioaddr + ST_MMC_STATUS_R); + if (value & 0x1) + return 0; + + cpu_relax(); + } while (!time_after_eq(curr, finish)); + + return -EBUSY; +} + +static int sdhci_st_set_dll_for_clock(struct sdhci_host *host) +{ + int ret = 0; + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct st_mmc_platform_data *pdata = pltfm_host->priv; + + if (host->clock > CLK_TO_CHECK_DLL_LOCK) { + st_mmcss_set_dll(pdata->top_ioaddr); + ret = st_mmcss_lock_dll(host->ioaddr); + } + + return ret; +} + +static void sdhci_st_set_uhs_signaling(struct sdhci_host *host, + unsigned int uhs) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct st_mmc_platform_data *pdata = pltfm_host->priv; + u16 ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); + int ret = 0; + + /* Select Bus Speed Mode for host */ + ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; + switch (uhs) { + /* + * Set V18_EN -- UHS modes do not work without this. + * does not change signaling voltage + */ + + case MMC_TIMING_UHS_SDR12: + st_mmcss_set_static_delay(pdata->top_ioaddr); + ctrl_2 |= SDHCI_CTRL_UHS_SDR12 | SDHCI_CTRL_VDD_180; + break; + case MMC_TIMING_UHS_SDR25: + st_mmcss_set_static_delay(pdata->top_ioaddr); + ctrl_2 |= SDHCI_CTRL_UHS_SDR25 | SDHCI_CTRL_VDD_180; + break; + case MMC_TIMING_UHS_SDR50: + st_mmcss_set_static_delay(pdata->top_ioaddr); + ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180; + ret = sdhci_st_set_dll_for_clock(host); + break; + case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_MMC_HS200: + st_mmcss_set_static_delay(pdata->top_ioaddr); + ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180; + ret = sdhci_st_set_dll_for_clock(host); + break; + case MMC_TIMING_UHS_DDR50: + case MMC_TIMING_MMC_DDR52: + st_mmcss_set_static_delay(pdata->top_ioaddr); + ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180; + break; + } + + if (ret) + dev_warn(mmc_dev(host->mmc), "Error setting dll for clock " + "(uhs %d)\n", uhs); + + dev_dbg(mmc_dev(host->mmc), "uhs %d, ctrl_2 %04X\n", uhs, ctrl_2); + + sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); +} + static u32 sdhci_st_readl(struct sdhci_host *host, int reg) { u32 ret; @@ -48,22 +334,33 @@ static const struct sdhci_ops sdhci_st_ops = { .set_bus_width = sdhci_set_bus_width, .read_l = sdhci_st_readl, .reset = sdhci_reset, + .set_uhs_signaling = sdhci_st_set_uhs_signaling, }; static const struct sdhci_pltfm_data sdhci_st_pdata = { .ops = &sdhci_st_ops, .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | - SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, + SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN | + SDHCI_QUIRK_NO_HISPD_BIT, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_STOP_WITH_TC, }; static int sdhci_st_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct sdhci_host *host; + struct st_mmc_platform_data *pdata; struct sdhci_pltfm_host *pltfm_host; struct clk *clk; int ret = 0; u16 host_version; + struct resource *res; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; clk = devm_clk_get(&pdev->dev, "mmc"); if (IS_ERR(clk)) { @@ -71,10 +368,17 @@ static int sdhci_st_probe(struct platform_device *pdev) return PTR_ERR(clk); } + pdata->rstc = devm_reset_control_get(&pdev->dev, NULL); + if (IS_ERR(pdata->rstc)) + pdata->rstc = NULL; + else + reset_control_deassert(pdata->rstc); + host = sdhci_pltfm_init(pdev, &sdhci_st_pdata, 0); if (IS_ERR(host)) { dev_err(&pdev->dev, "Failed sdhci_pltfm_init\n"); - return PTR_ERR(host); + ret = PTR_ERR(host); + goto err_pltfm_init; } ret = mmc_of_parse(host->mmc); @@ -85,9 +389,22 @@ static int sdhci_st_probe(struct platform_device *pdev) clk_prepare_enable(clk); + /* Configure the FlashSS Top registers for setting eMMC TX/RX delay */ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "top-mmc-delay"); + pdata->top_ioaddr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(pdata->top_ioaddr)) { + dev_warn(&pdev->dev, "FlashSS Top Dly registers not available"); + pdata->top_ioaddr = NULL; + } + pltfm_host = sdhci_priv(host); + pltfm_host->priv = pdata; pltfm_host->clk = clk; + /* Configure the Arasan HC inside the flashSS */ + st_mmcss_cconfig(np, host); + ret = sdhci_add_host(host); if (ret) { dev_err(&pdev->dev, "Failed sdhci_add_host\n"); @@ -109,6 +426,9 @@ err_out: clk_disable_unprepare(clk); err_of: sdhci_pltfm_free(pdev); +err_pltfm_init: + if (pdata->rstc) + reset_control_assert(pdata->rstc); return ret; } @@ -117,10 +437,15 @@ static int sdhci_st_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct st_mmc_platform_data *pdata = pltfm_host->priv; + int ret; - clk_disable_unprepare(pltfm_host->clk); + ret = sdhci_pltfm_unregister(pdev); + + if (pdata->rstc) + reset_control_assert(pdata->rstc); - return sdhci_pltfm_unregister(pdev); + return ret; } #ifdef CONFIG_PM_SLEEP @@ -128,11 +453,15 @@ static int sdhci_st_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct st_mmc_platform_data *pdata = pltfm_host->priv; int ret = sdhci_suspend_host(host); if (ret) goto out; + if (pdata->rstc) + reset_control_assert(pdata->rstc); + clk_disable_unprepare(pltfm_host->clk); out: return ret; @@ -142,9 +471,16 @@ static int sdhci_st_resume(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct st_mmc_platform_data *pdata = pltfm_host->priv; + struct device_node *np = dev->of_node; clk_prepare_enable(pltfm_host->clk); + if (pdata->rstc) + reset_control_deassert(pdata->rstc); + + st_mmcss_cconfig(np, host); + return sdhci_resume_host(host); } #endif diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index f3778d58d1cd..ad28b49f0203 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -20,11 +20,10 @@ #include <linux/io.h> #include <linux/of.h> #include <linux/of_device.h> -#include <linux/of_gpio.h> -#include <linux/gpio.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> #include <linux/mmc/slot-gpio.h> +#include <linux/gpio/consumer.h> #include "sdhci-pltfm.h" @@ -41,7 +40,6 @@ #define NVQUIRK_DISABLE_SDR50 BIT(3) #define NVQUIRK_DISABLE_SDR104 BIT(4) #define NVQUIRK_DISABLE_DDR50 BIT(5) -#define NVQUIRK_SHADOW_XFER_MODE_REG BIT(6) struct sdhci_tegra_soc_data { const struct sdhci_pltfm_data *pdata; @@ -50,7 +48,7 @@ struct sdhci_tegra_soc_data { struct sdhci_tegra { const struct sdhci_tegra_soc_data *soc_data; - int power_gpio; + struct gpio_desc *power_gpio; }; static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg) @@ -71,23 +69,19 @@ static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg) static void tegra_sdhci_writew(struct sdhci_host *host, u16 val, int reg) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_tegra *tegra_host = pltfm_host->priv; - const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; - if (soc_data->nvquirks & NVQUIRK_SHADOW_XFER_MODE_REG) { - switch (reg) { - case SDHCI_TRANSFER_MODE: - /* - * Postpone this write, we must do it together with a - * command write that is down below. - */ - pltfm_host->xfer_mode_shadow = val; - return; - case SDHCI_COMMAND: - writel((val << 16) | pltfm_host->xfer_mode_shadow, - host->ioaddr + SDHCI_TRANSFER_MODE); - return; - } + switch (reg) { + case SDHCI_TRANSFER_MODE: + /* + * Postpone this write, we must do it together with a + * command write that is down below. + */ + pltfm_host->xfer_mode_shadow = val; + return; + case SDHCI_COMMAND: + writel((val << 16) | pltfm_host->xfer_mode_shadow, + host->ioaddr + SDHCI_TRANSFER_MODE); + return; } writew(val, host->ioaddr + reg); @@ -173,7 +167,6 @@ static void tegra_sdhci_set_bus_width(struct sdhci_host *host, int bus_width) static const struct sdhci_ops tegra_sdhci_ops = { .get_ro = tegra_sdhci_get_ro, .read_w = tegra_sdhci_readw, - .write_w = tegra_sdhci_writew, .write_l = tegra_sdhci_writel, .set_clock = sdhci_set_clock, .set_bus_width = tegra_sdhci_set_bus_width, @@ -214,6 +207,18 @@ static struct sdhci_tegra_soc_data soc_data_tegra30 = { NVQUIRK_DISABLE_SDR104, }; +static const struct sdhci_ops tegra114_sdhci_ops = { + .get_ro = tegra_sdhci_get_ro, + .read_w = tegra_sdhci_readw, + .write_w = tegra_sdhci_writew, + .write_l = tegra_sdhci_writel, + .set_clock = sdhci_set_clock, + .set_bus_width = tegra_sdhci_set_bus_width, + .reset = tegra_sdhci_reset, + .set_uhs_signaling = sdhci_set_uhs_signaling, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, +}; + static const struct sdhci_pltfm_data sdhci_tegra114_pdata = { .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | @@ -221,15 +226,14 @@ static const struct sdhci_pltfm_data sdhci_tegra114_pdata = { SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, - .ops = &tegra_sdhci_ops, + .ops = &tegra114_sdhci_ops, }; static struct sdhci_tegra_soc_data soc_data_tegra114 = { .pdata = &sdhci_tegra114_pdata, .nvquirks = NVQUIRK_DISABLE_SDR50 | NVQUIRK_DISABLE_DDR50 | - NVQUIRK_DISABLE_SDR104 | - NVQUIRK_SHADOW_XFER_MODE_REG, + NVQUIRK_DISABLE_SDR104, }; static const struct of_device_id sdhci_tegra_dt_match[] = { @@ -241,17 +245,6 @@ static const struct of_device_id sdhci_tegra_dt_match[] = { }; MODULE_DEVICE_TABLE(of, sdhci_tegra_dt_match); -static int sdhci_tegra_parse_dt(struct device *dev) -{ - struct device_node *np = dev->of_node; - struct sdhci_host *host = dev_get_drvdata(dev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_tegra *tegra_host = pltfm_host->priv; - - tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0); - return mmc_of_parse(host->mmc); -} - static int sdhci_tegra_probe(struct platform_device *pdev) { const struct of_device_id *match; @@ -281,21 +274,18 @@ static int sdhci_tegra_probe(struct platform_device *pdev) tegra_host->soc_data = soc_data; pltfm_host->priv = tegra_host; - rc = sdhci_tegra_parse_dt(&pdev->dev); + rc = mmc_of_parse(host->mmc); if (rc) goto err_parse_dt; - if (gpio_is_valid(tegra_host->power_gpio)) { - rc = gpio_request(tegra_host->power_gpio, "sdhci_power"); - if (rc) { - dev_err(mmc_dev(host->mmc), - "failed to allocate power gpio\n"); - goto err_power_req; - } - gpio_direction_output(tegra_host->power_gpio, 1); + tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", + GPIOD_OUT_HIGH); + if (IS_ERR(tegra_host->power_gpio)) { + rc = PTR_ERR(tegra_host->power_gpio); + goto err_power_req; } - clk = clk_get(mmc_dev(host->mmc), NULL); + clk = devm_clk_get(mmc_dev(host->mmc), NULL); if (IS_ERR(clk)) { dev_err(mmc_dev(host->mmc), "clk err\n"); rc = PTR_ERR(clk); @@ -312,10 +302,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev) err_add_host: clk_disable_unprepare(pltfm_host->clk); - clk_put(pltfm_host->clk); err_clk_get: - if (gpio_is_valid(tegra_host->power_gpio)) - gpio_free(tegra_host->power_gpio); err_power_req: err_parse_dt: err_alloc_tegra_host: @@ -323,26 +310,6 @@ err_alloc_tegra_host: return rc; } -static int sdhci_tegra_remove(struct platform_device *pdev) -{ - struct sdhci_host *host = platform_get_drvdata(pdev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_tegra *tegra_host = pltfm_host->priv; - int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); - - sdhci_remove_host(host, dead); - - if (gpio_is_valid(tegra_host->power_gpio)) - gpio_free(tegra_host->power_gpio); - - clk_disable_unprepare(pltfm_host->clk); - clk_put(pltfm_host->clk); - - sdhci_pltfm_free(pdev); - - return 0; -} - static struct platform_driver sdhci_tegra_driver = { .driver = { .name = "sdhci-tegra", @@ -350,7 +317,7 @@ static struct platform_driver sdhci_tegra_driver = { .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_tegra_probe, - .remove = sdhci_tegra_remove, + .remove = sdhci_pltfm_unregister, }; module_platform_driver(sdhci_tegra_driver); diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0ad412a4876f..c80287a02735 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -28,6 +28,7 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> +#include <linux/mmc/sdio.h> #include <linux/mmc/slot-gpio.h> #include "sdhci.h" @@ -56,6 +57,7 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); static int sdhci_pre_dma_transfer(struct sdhci_host *host, struct mmc_data *data, struct sdhci_host_next *next); +static int sdhci_do_get_cd(struct sdhci_host *host); #ifdef CONFIG_PM static int sdhci_runtime_pm_get(struct sdhci_host *host); @@ -931,7 +933,8 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host, * If we are sending CMD23, CMD12 never gets sent * on successful completion (so no Auto-CMD12). */ - if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) + if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12) && + (cmd->opcode != SD_IO_RW_EXTENDED)) mode |= SDHCI_TRNS_AUTO_CMD12; else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { mode |= SDHCI_TRNS_AUTO_CMD23; @@ -1356,7 +1359,8 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) sdhci_runtime_pm_get(host); - present = mmc_gpio_get_cd(host->mmc); + /* Firstly check card presence */ + present = sdhci_do_get_cd(host); spin_lock_irqsave(&host->lock, flags); @@ -1379,22 +1383,6 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) host->mrq = mrq; - /* - * Firstly check card presence from cd-gpio. The return could - * be one of the following possibilities: - * negative: cd-gpio is not available - * zero: cd-gpio is used, and card is removed - * one: cd-gpio is used, and card is present - */ - if (present < 0) { - /* If polling, assume that the card is always present. */ - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) - present = 1; - else - present = sdhci_readl(host, SDHCI_PRESENT_STATE) & - SDHCI_CARD_PRESENT; - } - if (!present || host->flags & SDHCI_DEVICE_DEAD) { host->mrq->cmd->error = -ENOMEDIUM; tasklet_schedule(&host->finish_tasklet); @@ -3164,7 +3152,8 @@ int sdhci_add_host(struct sdhci_host *host) /* Auto-CMD23 stuff only works in ADMA or PIO. */ if ((host->version >= SDHCI_SPEC_300) && ((host->flags & SDHCI_USE_ADMA) || - !(host->flags & SDHCI_USE_SDMA))) { + !(host->flags & SDHCI_USE_SDMA)) && + !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) { host->flags |= SDHCI_AUTO_CMD23; DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc)); } else { diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0315e1844330..e639b7f435e5 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -18,7 +18,7 @@ #include <linux/types.h> #include <linux/io.h> -#include <linux/mmc/sdhci.h> +#include <linux/mmc/host.h> /* * Controller registers @@ -309,6 +309,207 @@ struct sdhci_adma2_64_desc { */ #define SDHCI_MAX_SEGS 128 +struct sdhci_host_next { + unsigned int sg_count; + s32 cookie; +}; + +struct sdhci_host { + /* Data set by hardware interface driver */ + const char *hw_name; /* Hardware bus name */ + + unsigned int quirks; /* Deviations from spec. */ + +/* Controller doesn't honor resets unless we touch the clock register */ +#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) +/* Controller has bad caps bits, but really supports DMA */ +#define SDHCI_QUIRK_FORCE_DMA (1<<1) +/* Controller doesn't like to be reset when there is no card inserted. */ +#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) +/* Controller doesn't like clearing the power reg before a change */ +#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) +/* Controller has flaky internal state so reset it on each ios change */ +#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) +/* Controller has an unusable DMA engine */ +#define SDHCI_QUIRK_BROKEN_DMA (1<<5) +/* Controller has an unusable ADMA engine */ +#define SDHCI_QUIRK_BROKEN_ADMA (1<<6) +/* Controller can only DMA from 32-bit aligned addresses */ +#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7) +/* Controller can only DMA chunk sizes that are a multiple of 32 bits */ +#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8) +/* Controller can only ADMA chunks that are a multiple of 32 bits */ +#define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9) +/* Controller needs to be reset after each request to stay stable */ +#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10) +/* Controller needs voltage and power writes to happen separately */ +#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11) +/* Controller provides an incorrect timeout value for transfers */ +#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12) +/* Controller has an issue with buffer bits for small transfers */ +#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13) +/* Controller does not provide transfer-complete interrupt when not busy */ +#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) +/* Controller has unreliable card detection */ +#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) +/* Controller reports inverted write-protect state */ +#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) +/* Controller does not like fast PIO transfers */ +#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18) +/* Controller has to be forced to use block size of 2048 bytes */ +#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20) +/* Controller cannot do multi-block transfers */ +#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21) +/* Controller can only handle 1-bit data transfers */ +#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22) +/* Controller needs 10ms delay between applying power and clock */ +#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23) +/* Controller uses SDCLK instead of TMCLK for data timeouts */ +#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24) +/* Controller reports wrong base clock capability */ +#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) +/* Controller cannot support End Attribute in NOP ADMA descriptor */ +#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) +/* Controller is missing device caps. Use caps provided by host */ +#define SDHCI_QUIRK_MISSING_CAPS (1<<27) +/* Controller uses Auto CMD12 command to stop the transfer */ +#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) +/* Controller doesn't have HISPD bit field in HI-SPEED SD card */ +#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) +/* Controller treats ADMA descriptors with length 0000h incorrectly */ +#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) +/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ +#define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) + + unsigned int quirks2; /* More deviations from spec. */ + +#define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0) +#define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) +/* The system physically doesn't support 1.8v, even if the host does */ +#define SDHCI_QUIRK2_NO_1_8_V (1<<2) +#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) +#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) +/* Controller has a non-standard host control register */ +#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) +/* Controller does not support HS200 */ +#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6) +/* Controller does not support DDR50 */ +#define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7) +/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */ +#define SDHCI_QUIRK2_STOP_WITH_TC (1<<8) +/* Controller does not support 64-bit DMA */ +#define SDHCI_QUIRK2_BROKEN_64_BIT_DMA (1<<9) +/* need clear transfer mode register before send cmd */ +#define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD (1<<10) +/* Capability register bit-63 indicates HS400 support */ +#define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 (1<<11) +/* forced tuned clock */ +#define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12) +/* disable the block count for single block transactions */ +#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13) +/* Controller broken with using ACMD23 */ +#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14) + + int irq; /* Device IRQ */ + void __iomem *ioaddr; /* Mapped address */ + + const struct sdhci_ops *ops; /* Low level hw interface */ + + /* Internal data */ + struct mmc_host *mmc; /* MMC structure */ + u64 dma_mask; /* custom DMA mask */ + +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) + struct led_classdev led; /* LED control */ + char led_name[32]; +#endif + + spinlock_t lock; /* Mutex */ + + int flags; /* Host attributes */ +#define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */ +#define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */ +#define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */ +#define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */ +#define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */ +#define SDHCI_NEEDS_RETUNING (1<<5) /* Host needs retuning */ +#define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */ +#define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */ +#define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */ +#define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */ +#define SDHCI_SDR104_NEEDS_TUNING (1<<10) /* SDR104/HS200 needs tuning */ +#define SDHCI_USING_RETUNING_TIMER (1<<11) /* Host is using a retuning timer for the card */ +#define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */ +#define SDHCI_HS400_TUNING (1<<13) /* Tuning for HS400 */ + + unsigned int version; /* SDHCI spec. version */ + + unsigned int max_clk; /* Max possible freq (MHz) */ + unsigned int timeout_clk; /* Timeout freq (KHz) */ + unsigned int clk_mul; /* Clock Muliplier value */ + + unsigned int clock; /* Current clock (MHz) */ + u8 pwr; /* Current voltage */ + + bool runtime_suspended; /* Host is runtime suspended */ + bool bus_on; /* Bus power prevents runtime suspend */ + bool preset_enabled; /* Preset is enabled */ + + struct mmc_request *mrq; /* Current request */ + struct mmc_command *cmd; /* Current command */ + struct mmc_data *data; /* Current data request */ + unsigned int data_early:1; /* Data finished before cmd */ + unsigned int busy_handle:1; /* Handling the order of Busy-end */ + + struct sg_mapping_iter sg_miter; /* SG state for PIO */ + unsigned int blocks; /* remaining PIO blocks */ + + int sg_count; /* Mapped sg entries */ + + void *adma_table; /* ADMA descriptor table */ + void *align_buffer; /* Bounce buffer */ + + size_t adma_table_sz; /* ADMA descriptor table size */ + size_t align_buffer_sz; /* Bounce buffer size */ + + dma_addr_t adma_addr; /* Mapped ADMA descr. table */ + dma_addr_t align_addr; /* Mapped bounce buffer */ + + unsigned int desc_sz; /* ADMA descriptor size */ + unsigned int align_sz; /* ADMA alignment */ + unsigned int align_mask; /* ADMA alignment mask */ + + struct tasklet_struct finish_tasklet; /* Tasklet structures */ + + struct timer_list timer; /* Timer for timeouts */ + + u32 caps; /* Alternative CAPABILITY_0 */ + u32 caps1; /* Alternative CAPABILITY_1 */ + + unsigned int ocr_avail_sdio; /* OCR bit masks */ + unsigned int ocr_avail_sd; + unsigned int ocr_avail_mmc; + u32 ocr_mask; /* available voltages */ + + unsigned timing; /* Current timing */ + + u32 thread_isr; + + /* cached registers */ + u32 ier; + + wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */ + unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */ + + unsigned int tuning_count; /* Timer count for re-tuning */ + unsigned int tuning_mode; /* Re-tuning mode supported by host */ +#define SDHCI_TUNING_MODE_1 0 + struct timer_list tuning_timer; /* Timer for tuning */ + + struct sdhci_host_next next_data; + unsigned long private[0] ____cacheline_aligned; +}; + struct sdhci_ops { #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS u32 (*read_l)(struct sdhci_host *host, int reg); diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 7d9d6a321521..072f67066df3 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -875,6 +875,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, struct mmc_command *cmd = mrq->cmd; u32 opc = cmd->opcode; u32 mask; + unsigned long flags; switch (opc) { /* response busy check */ @@ -909,10 +910,12 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, /* set arg */ sh_mmcif_writel(host->addr, MMCIF_CE_ARG, cmd->arg); /* set cmd */ + spin_lock_irqsave(&host->lock, flags); sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc); host->wait_for = MMCIF_WAIT_FOR_CMD; schedule_delayed_work(&host->timeout_work, host->timeout); + spin_unlock_irqrestore(&host->lock, flags); } static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host, @@ -1171,6 +1174,12 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) struct sh_mmcif_host *host = dev_id; struct mmc_request *mrq; bool wait = false; + unsigned long flags; + int wait_work; + + spin_lock_irqsave(&host->lock, flags); + wait_work = host->wait_for; + spin_unlock_irqrestore(&host->lock, flags); cancel_delayed_work_sync(&host->timeout_work); @@ -1188,7 +1197,7 @@ static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) * All handlers return true, if processing continues, and false, if the * request has to be completed - successfully or not */ - switch (host->wait_for) { + switch (wait_work) { case MMCIF_WAIT_FOR_REQUEST: /* We're too late, the timeout has already kicked in */ mutex_unlock(&host->thread_lock); @@ -1312,15 +1321,15 @@ static void mmcif_timeout_work(struct work_struct *work) /* Don't run after mmc_remove_host() */ return; - dev_err(&host->pd->dev, "Timeout waiting for %u on CMD%u\n", - host->wait_for, mrq->cmd->opcode); - spin_lock_irqsave(&host->lock, flags); if (host->state == STATE_IDLE) { spin_unlock_irqrestore(&host->lock, flags); return; } + dev_err(&host->pd->dev, "Timeout waiting for %u on CMD%u\n", + host->wait_for, mrq->cmd->opcode); + host->state = STATE_TIMEOUT; spin_unlock_irqrestore(&host->lock, flags); diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index e8a4218b5726..4d3e1ffe5508 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -293,7 +293,7 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, struct mmc_data *data) { struct sunxi_idma_des *pdes = (struct sunxi_idma_des *)host->sg_cpu; - struct sunxi_idma_des *pdes_pa = (struct sunxi_idma_des *)host->sg_dma; + dma_addr_t next_desc = host->sg_dma; int i, max_len = (1 << host->idma_des_size_bits); for (i = 0; i < data->sg_len; i++) { @@ -305,8 +305,9 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, else pdes[i].buf_size = data->sg[i].length; + next_desc += sizeof(struct sunxi_idma_des); pdes[i].buf_addr_ptr1 = sg_dma_address(&data->sg[i]); - pdes[i].buf_addr_ptr2 = (u32)&pdes_pa[i + 1]; + pdes[i].buf_addr_ptr2 = (u32)next_desc; } pdes[0].config |= SDXC_IDMAC_DES0_FD; @@ -930,7 +931,9 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, return PTR_ERR(host->clk_sample); } - host->reset = devm_reset_control_get(&pdev->dev, "ahb"); + host->reset = devm_reset_control_get_optional(&pdev->dev, "ahb"); + if (PTR_ERR(host->reset) == -EPROBE_DEFER) + return PTR_ERR(host->reset); ret = clk_prepare_enable(host->clk_ahb); if (ret) { @@ -1028,7 +1031,7 @@ static int sunxi_mmc_probe(struct platform_device *pdev) mmc->f_min = 400000; mmc->f_max = 50000000; mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | - MMC_CAP_ERASE; + MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ; ret = mmc_of_parse(mmc); if (ret) diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index a31c3573d386..dba7e1c19dd7 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -1073,8 +1073,6 @@ EXPORT_SYMBOL(tmio_mmc_host_alloc); void tmio_mmc_host_free(struct tmio_mmc_host *host) { mmc_free_host(host->mmc); - - host->mmc = NULL; } EXPORT_SYMBOL(tmio_mmc_host_free); diff --git a/drivers/mmc/host/wmt-sdmmc.c b/drivers/mmc/host/wmt-sdmmc.c index dd2e1aa95ba3..5af00559e9d6 100644 --- a/drivers/mmc/host/wmt-sdmmc.c +++ b/drivers/mmc/host/wmt-sdmmc.c @@ -744,7 +744,7 @@ static struct wmt_mci_caps wm8505_caps = { .max_blk_size = 2048, }; -static struct of_device_id wmt_mci_dt_ids[] = { +static const struct of_device_id wmt_mci_dt_ids[] = { { .compatible = "wm,wm8505-sdhc", .data = &wm8505_caps }, { /* Sentinel */ }, }; |