Merge tag 'mmc-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Fixup max_discard/trim calculations
   - Announce SD specs greater than 4.0
   - Add discard support for SD cards
   - Don't do retries for CMD6 (SWITCH command)
   - Various cleanups and re-structuring

  MMC host:
   - cqhci:
      * Add maintainers for eMMC CQHCI driver
   - sdhci:
      * Consolidate WP GPIO code
      * Add ADMA3 DMA support for V4 enabled host
      * Fixup card detect support in pci-o2micro driver
      * Add support for CMDQ and SDMMC pads auto-calibration in tegra
        driver
      * Add DCMD support and CMDQ support, support for i.MX6ULL variant,
        fixup HS400 timing issue and add HS400_ES support for i.MX8QXP
        to esdhc-imx driver
      * Avoid CRC errors by adjusting settings to speed mode and fixup
        card initialization for high speed mode in renesas_sdhi
      * Fixup timeout settings for omap
      * Enable 8 bits bus-width support in atmel-mci
      * Convert some legacy code in jz4740 driver to use modern APIs
      * Send a CMD12 to clear DPSM at errors for STM32 sdmmc mmci
        driver"

* tag 'mmc-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (69 commits)
  mmc:fix a bug when max_discard is 0
  mmc: core: Add a debug print when the card may have been replaced
  mmc: core: Add sd discard timeout
  mmc: core: Add discard support to sd
  mmc: sdhci-esdhc-imx: clear the HALT bit when enable CQE
  mmc: core: do not retry CMD6 in __mmc_switch()
  mmc: core: Convert mmc_align_data_size() into an SDIO specific function
  mmc: core: Move mmc_of_parse_voltage() to host.c
  mmc: core: Convert mmc_regulator_get_ocrmask() to static
  mmc: core: Move regulator helpers to separate file
  mmc: of_mmc_spi: Convert to mmc_of_parse_voltage()
  mmc: core: Drop retries as in-parameter to mmc_wait_for_app_cmd()
  mmc: core: Convert mmc_wait_for_app_cmd() to static
  mmc: renesas_sdhi: Change HW adjustment register according to speed mode
  mmc: mmci: Send a CMD12 to clear the DPSM at errors
  mmc: sdhci-xenon: Fixup already marked switch fall-through
  mmc: sdhci-tegra: drop ->get_ro() implementation
  mmc: sdhci-omap: drop ->get_ro() implementation
  mmc: sdhci: use WP GPIO in sdhci_check_ro()
  mmc: wmt-sdmmc: Drop unused include
  ...

Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt

@@ -15,6 +15,7 @@ Required properties:
 	       "fsl,imx6q-usdhc"
 	       "fsl,imx6sl-usdhc"
 	       "fsl,imx6sx-usdhc"
+	       "fsl,imx6ull-usdhc"
 	       "fsl,imx7d-usdhc"
 	       "fsl,imx8qxp-usdhc"
 

Documentation/devicetree/bindings/mmc/mmc.txt

@@ -62,6 +62,8 @@ Optional properties:
   be referred to mmc-pwrseq-simple.txt. But now it's reused as a tunable delay
   waiting for I/O signalling and card power supply to be stable, regardless of
   whether pwrseq-simple is used. Default to 10ms if no available.
+- supports-cqe : The presence of this property indicates that the corresponding
+  MMC host controller supports HW command queue feature.
 
 *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
 polarity properties, we have to fix the meaning of the "normal" and "inverted"

Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt

@@ -39,12 +39,16 @@ sdhci@c8000200 {
 	bus-width = <8>;
 };
 
-Optional properties for Tegra210 and Tegra186:
+Optional properties for Tegra210, Tegra186 and Tegra194:
 - pinctrl-names, pinctrl-0, pinctrl-1 : Specify pad voltage
   configurations. Valid pinctrl-names are "sdmmc-3v3" and "sdmmc-1v8"
   for controllers supporting multiple voltage levels. The order of names
   should correspond to the pin configuration states in pinctrl-0 and
   pinctrl-1.
+- pinctrl-names : "sdmmc-3v3-drv" and "sdmmc-1v8-drv" are applicable for
+  Tegra210 where pad config registers are in the pinmux register domain
+  for pull-up-strength and pull-down-strength values configuration when
+  using pads at 3V3 and 1V8 levels.
 - nvidia,only-1-8-v : The presence of this property indicates that the
   controller operates at a 1.8 V fixed I/O voltage.
 - nvidia,pad-autocal-pull-up-offset-3v3,

Documentation/devicetree/bindings/mmc/ti-omap.txt

@@ -24,31 +24,3 @@ Examples:
 		dmas = <&sdma 61 &sdma 62>;
 		dma-names = "tx", "rx";
 	};
-
-* TI MMC host controller for OMAP1 and 2420
-
-The MMC Host Controller on TI OMAP1 and 2420 family provides
-an interface for MMC, SD, and SDIO types of memory cards.
-
-This file documents differences between the core properties described
-by mmc.txt and the properties used by the omap mmc driver.
-
-Note that this driver will not work with omap2430 or later omaps,
-please see the omap hsmmc driver for the current omaps.
-
-Required properties:
-- compatible: Must be "ti,omap2420-mmc", for OMAP2420 controllers
-- ti,hwmods: For 2420, must be "msdi<n>", where n is controller
-  instance starting 1
-
-Examples:
-
-	msdi1: mmc@4809c000 {
-		compatible = "ti,omap2420-mmc";
-		ti,hwmods = "msdi1";
-		reg = <0x4809c000 0x80>;
-		interrupts = <83>;
-		dmas = <&sdma 61 &sdma 62>;
-		dma-names = "tx", "rx";
-	};
-

MAINTAINERS

@@ -13616,11 +13616,18 @@ F:	drivers/mmc/host/sdhci-brcmstb*
 SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) DRIVER
 M:	Adrian Hunter <adrian.hunter@intel.com>
 L:	linux-mmc@vger.kernel.org
-T:	git git://git.infradead.org/users/ahunter/linux-sdhci.git
 S:	Maintained
 F:	drivers/mmc/host/sdhci*
 F:	include/linux/mmc/sdhci*
 
+EMMC CMDQ HOST CONTROLLER INTERFACE (CQHCI) DRIVER
+M:	Adrian Hunter <adrian.hunter@intel.com>
+M:	Ritesh Harjani <riteshh@codeaurora.org>
+M:	Asutosh Das <asutoshd@codeaurora.org>
+L:	linux-mmc@vger.kernel.org
+S:	Maintained
+F:	drivers/mmc/host/cqhci*
+
 SYNOPSYS SDHCI COMPLIANT DWC MSHC DRIVER
 M:	Prabu Thangamuthu <prabu.t@synopsys.com>
 M:	Manjunath M B <manjumb@synopsys.com>

drivers/mmc/core/Makefile

@@ -8,7 +8,7 @@ mmc_core-y			:= core.o bus.o host.o \
 				   mmc.o mmc_ops.o sd.o sd_ops.o \
 				   sdio.o sdio_ops.o sdio_bus.o \
 				   sdio_cis.o sdio_io.o sdio_irq.o \
-				   slot-gpio.o
+				   slot-gpio.o regulator.o
 mmc_core-$(CONFIG_OF)		+= pwrseq.o
 obj-$(CONFIG_PWRSEQ_SIMPLE)	+= pwrseq_simple.o
 obj-$(CONFIG_PWRSEQ_SD8787)	+= pwrseq_sd8787.o

drivers/mmc/core/block.c

@@ -1124,7 +1124,7 @@ static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 {
 	struct mmc_blk_data *md = mq->blkdata;
 	struct mmc_card *card = md->queue.card;
-	unsigned int from, nr, arg;
+	unsigned int from, nr;
 	int err = 0, type = MMC_BLK_DISCARD;
 	blk_status_t status = BLK_STS_OK;
 
@@ -1136,24 +1136,18 @@ static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
 	from = blk_rq_pos(req);
 	nr = blk_rq_sectors(req);
 
-	if (mmc_can_discard(card))
-		arg = MMC_DISCARD_ARG;
-	else if (mmc_can_trim(card))
-		arg = MMC_TRIM_ARG;
-	else
-		arg = MMC_ERASE_ARG;
 	do {
 		err = 0;
 		if (card->quirks & MMC_QUIRK_INAND_CMD38) {
 			err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 					 INAND_CMD38_ARG_EXT_CSD,
-					 arg == MMC_TRIM_ARG ?
+					 card->erase_arg == MMC_TRIM_ARG ?
 					 INAND_CMD38_ARG_TRIM :
 					 INAND_CMD38_ARG_ERASE,
 					 0);
 		}
 		if (!err)
-			err = mmc_erase(card, from, nr, arg);
+			err = mmc_erase(card, from, nr, card->erase_arg);
 	} while (err == -EIO && !mmc_blk_reset(md, card->host, type));
 	if (err)
 		status = BLK_STS_IOERR;
@@ -2768,8 +2762,8 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
 
 	return ret;
 }
-DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get,
-		NULL, "%08llx\n");
+DEFINE_DEBUGFS_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get,
+			 NULL, "%08llx\n");
 
 /* That is two digits * 512 + 1 for newline */
 #define EXT_CSD_STR_LEN 1025
@@ -2857,8 +2851,9 @@ static int mmc_blk_add_debugfs(struct mmc_card *card, struct mmc_blk_data *md)
 
 	if (mmc_card_mmc(card) || mmc_card_sd(card)) {
 		md->status_dentry =
-			debugfs_create_file("status", S_IRUSR, root, card,
-					    &mmc_dbg_card_status_fops);
+			debugfs_create_file_unsafe("status", 0400, root,
+						   card,
+						   &mmc_dbg_card_status_fops);
 		if (!md->status_dentry)
 			return -EIO;
 	}

drivers/mmc/core/core.h

@@ -59,6 +59,7 @@ void mmc_power_up(struct mmc_host *host, u32 ocr);
 void mmc_power_off(struct mmc_host *host);
 void mmc_power_cycle(struct mmc_host *host, u32 ocr);
 void mmc_set_initial_state(struct mmc_host *host);
+u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
 
 static inline void mmc_delay(unsigned int ms)
 {

drivers/mmc/core/host.c

@@ -194,7 +194,7 @@ int mmc_of_parse(struct mmc_host *host)
 	switch (bus_width) {
 	case 8:
 		host->caps |= MMC_CAP_8_BIT_DATA;
-		/* Hosts capable of 8-bit transfers can also do 4 bits */
+		/* fall through - Hosts capable of 8-bit can also do 4 bits */
 	case 4:
 		host->caps |= MMC_CAP_4_BIT_DATA;
 		break;
@@ -260,7 +260,7 @@ int mmc_of_parse(struct mmc_host *host)
 	/* Parse Write Protection */
 	ro_cap_invert = device_property_read_bool(dev, "wp-inverted");
 
-	ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
+	ret = mmc_gpiod_request_ro(host, "wp", 0, 0, &ro_gpio_invert);
 	if (!ret)
 		dev_info(host->parent, "Got WP GPIO\n");
 	else if (ret != -ENOENT && ret != -ENOSYS)
@@ -348,6 +348,50 @@ int mmc_of_parse(struct mmc_host *host)
 
 EXPORT_SYMBOL(mmc_of_parse);
 
+/**
+ * mmc_of_parse_voltage - return mask of supported voltages
+ * @np: The device node need to be parsed.
+ * @mask: mask of voltages available for MMC/SD/SDIO
+ *
+ * Parse the "voltage-ranges" DT property, returning zero if it is not
+ * found, negative errno if the voltage-range specification is invalid,
+ * or one if the voltage-range is specified and successfully parsed.
+ */
+int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
+{
+	const u32 *voltage_ranges;
+	int num_ranges, i;
+
+	voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
+	num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
+	if (!voltage_ranges) {
+		pr_debug("%pOF: voltage-ranges unspecified\n", np);
+		return 0;
+	}
+	if (!num_ranges) {
+		pr_err("%pOF: voltage-ranges empty\n", np);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_ranges; i++) {
+		const int j = i * 2;
+		u32 ocr_mask;
+
+		ocr_mask = mmc_vddrange_to_ocrmask(
+				be32_to_cpu(voltage_ranges[j]),
+				be32_to_cpu(voltage_ranges[j + 1]));
+		if (!ocr_mask) {
+			pr_err("%pOF: voltage-range #%d is invalid\n",
+				np, i);
+			return -EINVAL;
+		}
+		*mask |= ocr_mask;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL(mmc_of_parse_voltage);
+
 /**
  *	mmc_alloc_host - initialise the per-host structure.
  *	@extra: sizeof private data structure

drivers/mmc/core/mmc.c

@@ -1594,6 +1594,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 
 	if (oldcard) {
 		if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
+			pr_debug("%s: Perhaps the card was replaced\n",
+				mmc_hostname(host));
 			err = -ENOENT;
 			goto err;
 		}
@@ -1743,6 +1745,14 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			card->ext_csd.power_off_notification = EXT_CSD_POWER_ON;
 	}
 
+	/* set erase_arg */
+	if (mmc_can_discard(card))
+		card->erase_arg = MMC_DISCARD_ARG;
+	else if (mmc_can_trim(card))
+		card->erase_arg = MMC_TRIM_ARG;
+	else
+		card->erase_arg = MMC_ERASE_ARG;
+
 	/*
 	 * Select timing interface
 	 */

drivers/mmc/core/mmc_ops.c

@@ -562,7 +562,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
 	if (index == EXT_CSD_SANITIZE_START)
 		cmd.sanitize_busy = true;
 
-	err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
+	err = mmc_wait_for_cmd(host, &cmd, 0);
 	if (err)
 		goto out;
 

drivers/mmc/core/regulator.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Helper functions for MMC regulators.
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/log2.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/mmc/host.h>
+
+#include "core.h"
+#include "host.h"
+
+#ifdef CONFIG_REGULATOR
+
+/**
+ * mmc_ocrbitnum_to_vdd - Convert a OCR bit number to its voltage
+ * @vdd_bit:	OCR bit number
+ * @min_uV:	minimum voltage value (mV)
+ * @max_uV:	maximum voltage value (mV)
+ *
+ * This function returns the voltage range according to the provided OCR
+ * bit number. If conversion is not possible a negative errno value returned.
+ */
+static int mmc_ocrbitnum_to_vdd(int vdd_bit, int *min_uV, int *max_uV)
+{
+	int		tmp;
+
+	if (!vdd_bit)
+		return -EINVAL;
+
+	/*
+	 * REVISIT mmc_vddrange_to_ocrmask() may have set some
+	 * bits this regulator doesn't quite support ... don't
+	 * be too picky, most cards and regulators are OK with
+	 * a 0.1V range goof (it's a small error percentage).
+	 */
+	tmp = vdd_bit - ilog2(MMC_VDD_165_195);
+	if (tmp == 0) {
+		*min_uV = 1650 * 1000;
+		*max_uV = 1950 * 1000;
+	} else {
+		*min_uV = 1900 * 1000 + tmp * 100 * 1000;
+		*max_uV = *min_uV + 100 * 1000;
+	}
+
+	return 0;
+}
+
+/**
+ * mmc_regulator_get_ocrmask - return mask of supported voltages
+ * @supply: regulator to use
+ *
+ * This returns either a negative errno, or a mask of voltages that
+ * can be provided to MMC/SD/SDIO devices using the specified voltage
+ * regulator.  This would normally be called before registering the
+ * MMC host adapter.
+ */
+static int mmc_regulator_get_ocrmask(struct regulator *supply)
+{
+	int			result = 0;
+	int			count;
+	int			i;
+	int			vdd_uV;
+	int			vdd_mV;
+
+	count = regulator_count_voltages(supply);
+	if (count < 0)
+		return count;
+
+	for (i = 0; i < count; i++) {
+		vdd_uV = regulator_list_voltage(supply, i);
+		if (vdd_uV <= 0)
+			continue;
+
+		vdd_mV = vdd_uV / 1000;
+		result |= mmc_vddrange_to_ocrmask(vdd_mV, vdd_mV);
+	}
+
+	if (!result) {
+		vdd_uV = regulator_get_voltage(supply);
+		if (vdd_uV <= 0)
+			return vdd_uV;
+
+		vdd_mV = vdd_uV / 1000;
+		result = mmc_vddrange_to_ocrmask(vdd_mV, vdd_mV);
+	}
+
+	return result;
+}
+
+/**
+ * mmc_regulator_set_ocr - set regulator to match host->ios voltage
+ * @mmc: the host to regulate
+ * @supply: regulator to use
+ * @vdd_bit: zero for power off, else a bit number (host->ios.vdd)
+ *
+ * Returns zero on success, else negative errno.
+ *
+ * MMC host drivers may use this to enable or disable a regulator using
+ * a particular supply voltage.  This would normally be called from the
+ * set_ios() method.
+ */
+int mmc_regulator_set_ocr(struct mmc_host *mmc,
+			struct regulator *supply,
+			unsigned short vdd_bit)
+{
+	int			result = 0;
+	int			min_uV, max_uV;
+
+	if (vdd_bit) {
+		mmc_ocrbitnum_to_vdd(vdd_bit, &min_uV, &max_uV);
+
+		result = regulator_set_voltage(supply, min_uV, max_uV);
+		if (result == 0 && !mmc->regulator_enabled) {
+			result = regulator_enable(supply);
+			if (!result)
+				mmc->regulator_enabled = true;
+		}
+	} else if (mmc->regulator_enabled) {
+		result = regulator_disable(supply);
+		if (result == 0)
+			mmc->regulator_enabled = false;
+	}
+
+	if (result)
+		dev_err(mmc_dev(mmc),
+			"could not set regulator OCR (%d)\n", result);
+	return result;
+}
+EXPORT_SYMBOL_GPL(mmc_regulator_set_ocr);
+
+static int mmc_regulator_set_voltage_if_supported(struct regulator *regulator,
+						  int min_uV, int target_uV,
+						  int max_uV)
+{
+	/*
+	 * Check if supported first to avoid errors since we may try several
+	 * signal levels during power up and don't want to show errors.
+	 */
+	if (!regulator_is_supported_voltage(regulator, min_uV, max_uV))
+		return -EINVAL;
+
+	return regulator_set_voltage_triplet(regulator, min_uV, target_uV,
+					     max_uV);
+}
+
+/**
+ * mmc_regulator_set_vqmmc - Set VQMMC as per the ios
+ *
+ * For 3.3V signaling, we try to match VQMMC to VMMC as closely as possible.
+ * That will match the behavior of old boards where VQMMC and VMMC were supplied
+ * by the same supply.  The Bus Operating conditions for 3.3V signaling in the
+ * SD card spec also define VQMMC in terms of VMMC.
+ * If this is not possible we'll try the full 2.7-3.6V of the spec.
+ *
+ * For 1.2V and 1.8V signaling we'll try to get as close as possible to the
+ * requested voltage.  This is definitely a good idea for UHS where there's a
+ * separate regulator on the card that's trying to make 1.8V and it's best if
+ * we match.
+ *
+ * This function is expected to be used by a controller's
+ * start_signal_voltage_switch() function.
+ */
+int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+	struct device *dev = mmc_dev(mmc);
+	int ret, volt, min_uV, max_uV;
+
+	/* If no vqmmc supply then we can't change the voltage */
+	if (IS_ERR(mmc->supply.vqmmc))
+		return -EINVAL;
+
+	switch (ios->signal_voltage) {
+	case MMC_SIGNAL_VOLTAGE_120:
+		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,
+						1100000, 1200000, 1300000);
+	case MMC_SIGNAL_VOLTAGE_180:
+		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,
+						1700000, 1800000, 1950000);
+	case MMC_SIGNAL_VOLTAGE_330:
+		ret = mmc_ocrbitnum_to_vdd(mmc->ios.vdd, &volt, &max_uV);
+		if (ret < 0)
+			return ret;
+
+		dev_dbg(dev, "%s: found vmmc voltage range of %d-%duV\n",
+			__func__, volt, max_uV);
+
+		min_uV = max(volt - 300000, 2700000);
+		max_uV = min(max_uV + 200000, 3600000);
+
+		/*
+		 * Due to a limitation in the current implementation of
+		 * regulator_set_voltage_triplet() which is taking the lowest
+		 * voltage possible if below the target, search for a suitable
+		 * voltage in two steps and try to stay close to vmmc
+		 * with a 0.3V tolerance at first.
+		 */
+		if (!mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,
+						min_uV, volt, max_uV))
+			return 0;
+
+		return mmc_regulator_set_voltage_if_supported(mmc->supply.vqmmc,
+						2700000, volt, 3600000);
+	default:
+		return -EINVAL;
+	}
+}
+EXPORT_SYMBOL_GPL(mmc_regulator_set_vqmmc);
+
+#else
+
+static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
+{
+	return 0;
+}
+
+#endif /* CONFIG_REGULATOR */
+
+/**
+ * mmc_regulator_get_supply - try to get VMMC and VQMMC regulators for a host
+ * @mmc: the host to regulate
+ *
+ * Returns 0 or errno. errno should be handled, it is either a critical error
+ * or -EPROBE_DEFER. 0 means no critical error but it does not mean all
+ * regulators have been found because they all are optional. If you require
+ * certain regulators, you need to check separately in your driver if they got
+ * populated after calling this function.
+ */
+int mmc_regulator_get_supply(struct mmc_host *mmc)
+{
+	struct device *dev = mmc_dev(mmc);
+	int ret;
+
+	mmc->supply.vmmc = devm_regulator_get_optional(dev, "vmmc");
+	mmc->supply.vqmmc = devm_regulator_get_optional(dev, "vqmmc");
+
+	if (IS_ERR(mmc->supply.vmmc)) {
+		if (PTR_ERR(mmc->supply.vmmc) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+		dev_dbg(dev, "No vmmc regulator found\n");
+	} else {
+		ret = mmc_regulator_get_ocrmask(mmc->supply.vmmc);
+		if (ret > 0)
+			mmc->ocr_avail = ret;
+		else
+			dev_warn(dev, "Failed getting OCR mask: %d\n", ret);
+	}
+
+	if (IS_ERR(mmc->supply.vqmmc)) {
+		if (PTR_ERR(mmc->supply.vqmmc) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+		dev_dbg(dev, "No vqmmc regulator found\n");
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mmc_regulator_get_supply);

drivers/mmc/core/sd.c

@@ -209,6 +209,11 @@ static int mmc_decode_scr(struct mmc_card *card)
 		/* Check if Physical Layer Spec v3.0 is supported */
 		scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1);
 
+	if (scr->sda_spec3) {
+		scr->sda_spec4 = UNSTUFF_BITS(resp, 42, 1);
+		scr->sda_specx = UNSTUFF_BITS(resp, 38, 4);
+	}
+
 	if (UNSTUFF_BITS(resp, 55, 1))
 		card->erased_byte = 0xFF;
 	else
@@ -226,6 +231,8 @@ static int mmc_read_ssr(struct mmc_card *card)
 {
 	unsigned int au, es, et, eo;
 	__be32 *raw_ssr;
+	u32 resp[4] = {};
+	u8 discard_support;
 	int i;
 
 	if (!(card->csd.cmdclass & CCC_APP_SPEC)) {
@@ -271,6 +278,14 @@ static int mmc_read_ssr(struct mmc_card *card)
 		}
 	}
 
+	/*
+	 * starting SD5.1 discard is supported if DISCARD_SUPPORT (b313) is set
+	 */
+	resp[3] = card->raw_ssr[6];
+	discard_support = UNSTUFF_BITS(resp, 313 - 288, 1);
+	card->erase_arg = (card->scr.sda_specx && discard_support) ?
+			    SD_DISCARD_ARG : SD_ERASE_ARG;
+
 	return 0;
 }
 
@@ -936,8 +951,11 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
 		return err;
 
 	if (oldcard) {
-		if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
+		if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
+			pr_debug("%s: Perhaps the card was replaced\n",
+				mmc_hostname(host));
 			return -ENOENT;
+		}
 
 		card = oldcard;
 	} else {

drivers/mmc/core/sd_ops.c

@@ -52,36 +52,17 @@ int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
 }
 EXPORT_SYMBOL_GPL(mmc_app_cmd);
 
-/**
- *	mmc_wait_for_app_cmd - start an application command and wait for
- 			       completion
- *	@host: MMC host to start command
- *	@card: Card to send MMC_APP_CMD to
- *	@cmd: MMC command to start
- *	@retries: maximum number of retries
- *
- *	Sends a MMC_APP_CMD, checks the card response, sends the command
- *	in the parameter and waits for it to complete. Return any error
- *	that occurred while the command was executing.  Do not attempt to
- *	parse the response.
- */
-int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
-	struct mmc_command *cmd, int retries)
+static int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
+				struct mmc_command *cmd)
 {
 	struct mmc_request mrq = {};
-
-	int i, err;
-
-	if (retries < 0)
-		retries = MMC_CMD_RETRIES;
-
-	err = -EIO;
+	int i, err = -EIO;
 
 	/*
 	 * We have to resend MMC_APP_CMD for each attempt so
 	 * we cannot use the retries field in mmc_command.
 	 */
-	for (i = 0;i <= retries;i++) {
+	for (i = 0; i <= MMC_CMD_RETRIES; i++) {
 		err = mmc_app_cmd(host, card);
 		if (err) {
 			/* no point in retrying; no APP commands allowed */
@@ -116,8 +97,6 @@ int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
 	return err;
 }
 
-EXPORT_SYMBOL(mmc_wait_for_app_cmd);
-
 int mmc_app_set_bus_width(struct mmc_card *card, int width)
 {
 	struct mmc_command cmd = {};
@@ -136,7 +115,7 @@ int mmc_app_set_bus_width(struct mmc_card *card, int width)
 		return -EINVAL;
 	}
 
-	return mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
+	return mmc_wait_for_app_cmd(card->host, card, &cmd);
 }
 
 int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
@@ -152,7 +131,7 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 	cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
 
 	for (i = 100; i; i--) {
-		err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
+		err = mmc_wait_for_app_cmd(host, NULL, &cmd);
 		if (err)
 			break;
 

drivers/mmc/core/sd_ops.h

@@ -16,7 +16,6 @@
 
 struct mmc_card;
 struct mmc_host;
-struct mmc_command;
 
 int mmc_app_set_bus_width(struct mmc_card *card, int width);
 int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
@@ -27,8 +26,6 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
 	u8 value, u8 *resp);
 int mmc_app_sd_status(struct mmc_card *card, void *ssr);
 int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card);
-int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
-	struct mmc_command *cmd, int retries);
 
 #endif
 

drivers/mmc/core/sdio.c

@@ -617,6 +617,8 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 		if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO ||
 		    memcmp(card->raw_cid, oldcard->raw_cid, sizeof(card->raw_cid)) != 0)) {
 			mmc_remove_card(card);
+			pr_debug("%s: Perhaps the card was replaced\n",
+				mmc_hostname(host));
 			return -ENOENT;
 		}
 	} else {
@@ -624,6 +626,8 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 
 		if (oldcard && oldcard->type != MMC_TYPE_SDIO) {
 			mmc_remove_card(card);
+			pr_debug("%s: Perhaps the card was replaced\n",
+				mmc_hostname(host));
 			return -ENOENT;
 		}
 	}
@@ -736,8 +740,11 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 		int same = (card->cis.vendor == oldcard->cis.vendor &&
 			    card->cis.device == oldcard->cis.device);
 		mmc_remove_card(card);
-		if (!same)
+		if (!same) {
+			pr_debug("%s: Perhaps the card was replaced\n",
+				mmc_hostname(host));
 			return -ENOENT;
+		}
 
 		card = oldcard;
 	}

drivers/mmc/core/sdio_bus.c

@@ -179,7 +179,6 @@ static int sdio_bus_remove(struct device *dev)
 {
 	struct sdio_driver *drv = to_sdio_driver(dev->driver);
 	struct sdio_func *func = dev_to_sdio_func(dev);
-	int ret = 0;
 
 	/* Make sure card is powered before invoking ->remove() */
 	if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
@@ -205,7 +204,7 @@ static int sdio_bus_remove(struct device *dev)
 
 	dev_pm_domain_detach(dev, false);
 
-	return ret;
+	return 0;
 }
 
 static const struct dev_pm_ops sdio_bus_pm_ops = {

drivers/mmc/core/sdio_io.c

@@ -10,6 +10,7 @@
  */
 
 #include <linux/export.h>
+#include <linux/kernel.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/sdio.h>
@@ -203,6 +204,21 @@ static inline unsigned int sdio_max_byte_size(struct sdio_func *func)
 	return min(mval, 512u); /* maximum size for byte mode */
 }
 
+/*
+ * This is legacy code, which needs to be re-worked some day. Basically we need
+ * to take into account the properties of the host, as to enable the SDIO func
+ * driver layer to allocate optimal buffers.
+ */
+static inline unsigned int _sdio_align_size(unsigned int sz)
+{
+	/*
+	 * FIXME: We don't have a system for the controller to tell
+	 * the core about its problems yet, so for now we just 32-bit
+	 * align the size.
+	 */
+	return ALIGN(sz, 4);
+}
+
 /**
  *	sdio_align_size - pads a transfer size to a more optimal value
  *	@func: SDIO function
@@ -230,7 +246,7 @@ unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
 	 * wants to increase the size up to a point where it
 	 * might need more than one block.
 	 */
-	sz = mmc_align_data_size(func->card, sz);
+	sz = _sdio_align_size(sz);
 
 	/*
 	 * If we can still do this with just a byte transfer, then
@@ -252,7 +268,7 @@ unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
 		 */
 		blk_sz = ((sz + func->cur_blksize - 1) /
 			func->cur_blksize) * func->cur_blksize;
-		blk_sz = mmc_align_data_size(func->card, blk_sz);
+		blk_sz = _sdio_align_size(blk_sz);
 
 		/*
 		 * This value is only good if it is still just
@@ -265,8 +281,7 @@ unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
 		 * We failed to do one request, but at least try to
 		 * pad the remainder properly.
 		 */
-		byte_sz = mmc_align_data_size(func->card,
-				sz % func->cur_blksize);
+		byte_sz = _sdio_align_size(sz % func->cur_blksize);
 		if (byte_sz <= sdio_max_byte_size(func)) {
 			blk_sz = sz / func->cur_blksize;
 			return blk_sz * func->cur_blksize + byte_sz;
@@ -276,16 +291,14 @@ unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
 		 * We need multiple requests, so first check that the
 		 * controller can handle the chunk size;
 		 */
-		chunk_sz = mmc_align_data_size(func->card,
-				sdio_max_byte_size(func));
+		chunk_sz = _sdio_align_size(sdio_max_byte_size(func));
 		if (chunk_sz == sdio_max_byte_size(func)) {
 			/*
 			 * Fix up the size of the remainder (if any)
 			 */
 			byte_sz = orig_sz % chunk_sz;
 			if (byte_sz) {
-				byte_sz = mmc_align_data_size(func->card,
-						byte_sz);
+				byte_sz = _sdio_align_size(byte_sz);
 			}
 
 			return (orig_sz / chunk_sz) * chunk_sz + byte_sz;

drivers/mmc/core/sdio_ops.h

@@ -25,7 +25,6 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
 int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
 	unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz);
 int sdio_reset(struct mmc_host *host);
-unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz);
 void sdio_irq_work(struct work_struct *work);
 
 static inline bool sdio_is_io_busy(u32 opcode, u32 arg)

drivers/mmc/core/slot-gpio.c

@@ -22,7 +22,6 @@
 struct mmc_gpio {
 	struct gpio_desc *ro_gpio;
 	struct gpio_desc *cd_gpio;
-	bool override_ro_active_level;
 	bool override_cd_active_level;
 	irqreturn_t (*cd_gpio_isr)(int irq, void *dev_id);
 	char *ro_label;
@@ -71,10 +70,6 @@ int mmc_gpio_get_ro(struct mmc_host *host)
 	if (!ctx || !ctx->ro_gpio)
 		return -ENOSYS;
 
-	if (ctx->override_ro_active_level)
-		return !gpiod_get_raw_value_cansleep(ctx->ro_gpio) ^
-			!!(host->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
-
 	return gpiod_get_value_cansleep(ctx->ro_gpio);
 }
 EXPORT_SYMBOL(mmc_gpio_get_ro);
@@ -225,7 +220,6 @@ EXPORT_SYMBOL(mmc_can_gpio_cd);
  * @host: mmc host
  * @con_id: function within the GPIO consumer
  * @idx: index of the GPIO to obtain in the consumer
- * @override_active_level: ignore %GPIO_ACTIVE_LOW flag
  * @debounce: debounce time in microseconds
  * @gpio_invert: will return whether the GPIO line is inverted or not,
  * set to NULL to ignore
@@ -233,7 +227,7 @@ EXPORT_SYMBOL(mmc_can_gpio_cd);
  * Returns zero on success, else an error.
  */
 int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
-			 unsigned int idx, bool override_active_level,
+			 unsigned int idx,
 			 unsigned int debounce, bool *gpio_invert)
 {
 	struct mmc_gpio *ctx = host->slot.handler_priv;
@@ -253,7 +247,6 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
 	if (gpio_invert)
 		*gpio_invert = !gpiod_is_active_low(desc);
 
-	ctx->override_ro_active_level = override_active_level;
 	ctx->ro_gpio = desc;
 
 	return 0;

drivers/mmc/host/Kconfig

@@ -224,6 +224,7 @@ config MMC_SDHCI_ESDHC_IMX
 	depends on ARCH_MXC
 	depends on MMC_SDHCI_PLTFM
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_CQHCI
 	help
 	  This selects the Freescale eSDHC/uSDHC controller support
 	  found on i.MX25, i.MX35 i.MX5x and i.MX6x.
@@ -250,6 +251,7 @@ config MMC_SDHCI_TEGRA
 	depends on ARCH_TEGRA
 	depends on MMC_SDHCI_PLTFM
 	select MMC_SDHCI_IO_ACCESSORS
+	select MMC_CQHCI
 	help
 	  This selects the Tegra SD/MMC controller. If you have a Tegra
 	  platform with SD or MMC devices, say Y or M here.

drivers/mmc/host/atmel-mci.c

@@ -1410,6 +1410,9 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	case MMC_BUS_WIDTH_4:
 		slot->sdc_reg |= ATMCI_SDCBUS_4BIT;
 		break;
+	case MMC_BUS_WIDTH_8:
+		slot->sdc_reg |= ATMCI_SDCBUS_8BIT;
+		break;
 	}
 
 	if (ios->clock) {
@@ -2275,8 +2278,11 @@ static int atmci_init_slot(struct atmel_mci *host,
 	 * use only one bit for data to prevent fifo underruns and overruns
 	 * which will corrupt data.
 	 */
-	if ((slot_data->bus_width >= 4) && host->caps.has_rwproof)
+	if ((slot_data->bus_width >= 4) && host->caps.has_rwproof) {
 		mmc->caps |= MMC_CAP_4_BIT_DATA;
+		if (slot_data->bus_width >= 8)
+			mmc->caps |= MMC_CAP_8_BIT_DATA;
+	}
 
 	if (atmci_get_version(host) < 0x200) {
 		mmc->max_segs = 256;

drivers/mmc/host/bcm2835.c

@@ -148,7 +148,6 @@ struct bcm2835_host {
 	void __iomem		*ioaddr;
 	u32			phys_addr;
 
-	struct mmc_host		*mmc;
 	struct platform_device	*pdev;
 
 	int			clock;		/* Current clock speed */
@@ -618,7 +617,7 @@ static void bcm2835_finish_request(struct bcm2835_host *host)
 				"failed to terminate DMA (%d)\n", err);
 	}
 
-	mmc_request_done(host->mmc, mrq);
+	mmc_request_done(mmc_from_priv(host), mrq);
 }
 
 static
@@ -837,7 +836,7 @@ static void bcm2835_timeout(struct work_struct *work)
 		dev_err(dev, "timeout waiting for hardware interrupt.\n");
 		bcm2835_dumpregs(host);
 
-		bcm2835_reset(host->mmc);
+		bcm2835_reset(mmc_from_priv(host));
 
 		if (host->data) {
 			host->data->error = -ETIMEDOUT;
@@ -1100,6 +1099,7 @@ static void bcm2835_dma_complete_work(struct work_struct *work)
 
 static void bcm2835_set_clock(struct bcm2835_host *host, unsigned int clock)
 {
+	struct mmc_host *mmc = mmc_from_priv(host);
 	int div;
 
 	/* The SDCDIV register has 11 bits, and holds (div - 2).  But
@@ -1143,18 +1143,18 @@ static void bcm2835_set_clock(struct bcm2835_host *host, unsigned int clock)
 		div = SDCDIV_MAX_CDIV;
 
 	clock = host->max_clk / (div + 2);
-	host->mmc->actual_clock = clock;
+	mmc->actual_clock = clock;
 
 	/* Calibrate some delays */
 
 	host->ns_per_fifo_word = (1000000000 / clock) *
-		((host->mmc->caps & MMC_CAP_4_BIT_DATA) ? 8 : 32);
+		((mmc->caps & MMC_CAP_4_BIT_DATA) ? 8 : 32);
 
 	host->cdiv = div;
 	writel(host->cdiv, host->ioaddr + SDCDIV);
 
 	/* Set the timeout to 500ms */
-	writel(host->mmc->actual_clock / 2, host->ioaddr + SDTOUT);
+	writel(mmc->actual_clock / 2, host->ioaddr + SDTOUT);
 }
 
 static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
@@ -1264,7 +1264,7 @@ static const struct mmc_host_ops bcm2835_ops = {
 
 static int bcm2835_add_host(struct bcm2835_host *host)
 {
-	struct mmc_host *mmc = host->mmc;
+	struct mmc_host *mmc = mmc_from_priv(host);
 	struct device *dev = &host->pdev->dev;
 	char pio_limit_string[20];
 	int ret;
@@ -1286,7 +1286,7 @@ static int bcm2835_add_host(struct bcm2835_host *host)
 	spin_lock_init(&host->lock);
 	mutex_init(&host->mutex);
 
-	if (IS_ERR_OR_NULL(host->dma_chan_rxtx)) {
+	if (!host->dma_chan_rxtx) {
 		dev_warn(dev, "unable to initialise DMA channel. Falling back to PIO\n");
 		host->use_dma = false;
 	} else {
@@ -1370,7 +1370,6 @@ static int bcm2835_probe(struct platform_device *pdev)
 
 	mmc->ops = &bcm2835_ops;
 	host = mmc_priv(mmc);
-	host->mmc = mmc;
 	host->pdev = pdev;
 	spin_lock_init(&host->lock);
 
@@ -1441,8 +1440,9 @@ static int bcm2835_probe(struct platform_device *pdev)
 static int bcm2835_remove(struct platform_device *pdev)
 {
 	struct bcm2835_host *host = platform_get_drvdata(pdev);
+	struct mmc_host *mmc = mmc_from_priv(host);
 
-	mmc_remove_host(host->mmc);
+	mmc_remove_host(mmc);
 
 	writel(SDVDD_POWER_OFF, host->ioaddr + SDVDD);
 
@@ -1454,8 +1454,7 @@ static int bcm2835_remove(struct platform_device *pdev)
 	if (host->dma_chan_rxtx)
 		dma_release_channel(host->dma_chan_rxtx);
 
-	mmc_free_host(host->mmc);
-	platform_set_drvdata(pdev, NULL);
+	mmc_free_host(mmc);
 
 	return 0;
 }

drivers/mmc/host/cb710-mmc.c

@@ -566,30 +566,32 @@ static void cb710_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
 	cb710_mmc_select_clock_divider(mmc, ios->clock);
 
-	if (ios->power_mode != reader->last_power_mode)
-	switch (ios->power_mode) {
-	case MMC_POWER_ON:
-		err = cb710_mmc_powerup(slot);
-		if (err) {
-			dev_warn(cb710_slot_dev(slot),
-				"powerup failed (%d)- retrying\n", err);
-			cb710_mmc_powerdown(slot);
-			udelay(1);
+	if (ios->power_mode != reader->last_power_mode) {
+		switch (ios->power_mode) {
+		case MMC_POWER_ON:
 			err = cb710_mmc_powerup(slot);
-			if (err)
+			if (err) {
 				dev_warn(cb710_slot_dev(slot),
-					"powerup retry failed (%d) - expect errors\n",
+					"powerup failed (%d)- retrying\n", err);
+				cb710_mmc_powerdown(slot);
+				udelay(1);
+				err = cb710_mmc_powerup(slot);
+				if (err)
+					dev_warn(cb710_slot_dev(slot),
+						"powerup retry failed (%d) - expect errors\n",
 					err);
+			}
+			reader->last_power_mode = MMC_POWER_ON;
+			break;
+		case MMC_POWER_OFF:
+			cb710_mmc_powerdown(slot);
+			reader->last_power_mode = MMC_POWER_OFF;
+			break;
+		case MMC_POWER_UP:
+		default:
+			/* ignore */
+			break;
 		}
-		reader->last_power_mode = MMC_POWER_ON;
-		break;
-	case MMC_POWER_OFF:
-		cb710_mmc_powerdown(slot);
-		reader->last_power_mode = MMC_POWER_OFF;
-		break;
-	case MMC_POWER_UP:
-	default:
-		/* ignore */;
 	}
 
 	cb710_mmc_enable_4bit_data(slot, ios->bus_width != MMC_BUS_WIDTH_1);

drivers/mmc/host/davinci_mmc.c

@@ -1193,7 +1193,7 @@ static int mmc_davinci_parse_pdata(struct mmc_host *mmc)
 	else if (ret)
 		mmc->caps |= MMC_CAP_NEEDS_POLL;
 
-	ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL);
+	ret = mmc_gpiod_request_ro(mmc, "wp", 0, 0, NULL);
 	if (ret == -EPROBE_DEFER)
 		return ret;
 

drivers/mmc/host/jz4740_mmc.c

@@ -21,7 +21,6 @@
 #include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/irq.h>
@@ -36,7 +35,6 @@
 #include <asm/cacheflush.h>
 
 #include <asm/mach-jz4740/dma.h>
-#include <asm/mach-jz4740/jz4740_mmc.h>
 
 #define JZ_REG_MMC_STRPCL	0x00
 #define JZ_REG_MMC_STATUS	0x04
@@ -148,9 +146,7 @@ enum jz4780_cookie {
 struct jz4740_mmc_host {
 	struct mmc_host *mmc;
 	struct platform_device *pdev;
-	struct jz4740_mmc_platform_data *pdata;
 	struct clk *clk;
-	struct gpio_desc *power;
 
 	enum jz4740_mmc_version version;
 
@@ -743,6 +739,7 @@ static irqreturn_t jz_mmc_irq_worker(int irq, void *devid)
 			break;
 
 		jz_mmc_prepare_data_transfer(host);
+		/* fall through */
 
 	case JZ4740_MMC_STATE_TRANSFER_DATA:
 		if (host->use_dma) {
@@ -777,6 +774,7 @@ static irqreturn_t jz_mmc_irq_worker(int irq, void *devid)
 			break;
 		}
 		jz4740_mmc_write_irq_reg(host, JZ_MMC_IRQ_DATA_TRAN_DONE);
+		/* fall through */
 
 	case JZ4740_MMC_STATE_SEND_STOP:
 		if (!req->stop)
@@ -894,16 +892,16 @@ static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	switch (ios->power_mode) {
 	case MMC_POWER_UP:
 		jz4740_mmc_reset(host);
-		if (host->power)
-			gpiod_set_value(host->power, 1);
+		if (!IS_ERR(mmc->supply.vmmc))
+			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
 		host->cmdat |= JZ_MMC_CMDAT_INIT;
 		clk_prepare_enable(host->clk);
 		break;
 	case MMC_POWER_ON:
 		break;
 	default:
-		if (host->power)
-			gpiod_set_value(host->power, 0);
+		if (!IS_ERR(mmc->supply.vmmc))
+			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
 		clk_disable_unprepare(host->clk);
 		break;
 	}
@@ -936,38 +934,6 @@ static const struct mmc_host_ops jz4740_mmc_ops = {
 	.enable_sdio_irq = jz4740_mmc_enable_sdio_irq,
 };
 
-static int jz4740_mmc_request_gpios(struct jz4740_mmc_host *host,
-				    struct mmc_host *mmc,
-				    struct platform_device *pdev)
-{
-	struct jz4740_mmc_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	int ret = 0;
-
-	if (!pdata)
-		return 0;
-
-	if (!pdata->card_detect_active_low)
-		mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
-	if (!pdata->read_only_active_low)
-		mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
-
-	/*
-	 * Get optional card detect and write protect GPIOs,
-	 * only back out on probe deferral.
-	 */
-	ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0, NULL);
-	if (ret == -EPROBE_DEFER)
-		return ret;
-
-	ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL);
-	if (ret == -EPROBE_DEFER)
-		return ret;
-
-	host->power = devm_gpiod_get_optional(&pdev->dev, "power",
-					      GPIOD_OUT_HIGH);
-	return PTR_ERR_OR_ZERO(host->power);
-}
-
 static const struct of_device_id jz4740_mmc_of_match[] = {
 	{ .compatible = "ingenic,jz4740-mmc", .data = (void *) JZ_MMC_JZ4740 },
 	{ .compatible = "ingenic,jz4725b-mmc", .data = (void *)JZ_MMC_JZ4725B },
@@ -982,9 +948,6 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 	struct mmc_host *mmc;
 	struct jz4740_mmc_host *host;
 	const struct of_device_id *match;
-	struct jz4740_mmc_platform_data *pdata;
-
-	pdata = dev_get_platdata(&pdev->dev);
 
 	mmc = mmc_alloc_host(sizeof(struct jz4740_mmc_host), &pdev->dev);
 	if (!mmc) {
@@ -993,29 +956,25 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 	}
 
 	host = mmc_priv(mmc);
-	host->pdata = pdata;
 
 	match = of_match_device(jz4740_mmc_of_match, &pdev->dev);
 	if (match) {
 		host->version = (enum jz4740_mmc_version)match->data;
-		ret = mmc_of_parse(mmc);
-		if (ret) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(&pdev->dev,
-					"could not parse of data: %d\n", ret);
-			goto err_free_host;
-		}
 	} else {
 		/* JZ4740 should be the only one using legacy probe */
 		host->version = JZ_MMC_JZ4740;
-		mmc->caps |= MMC_CAP_SDIO_IRQ;
-		if (!(pdata && pdata->data_1bit))
-			mmc->caps |= MMC_CAP_4_BIT_DATA;
-		ret = jz4740_mmc_request_gpios(host, mmc, pdev);
-		if (ret)
-			goto err_free_host;
 	}
 
+	ret = mmc_of_parse(mmc);
+	if (ret) {
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev,
+				"could not parse device properties: %d\n", ret);
+		goto err_free_host;
+	}
+
+	mmc_regulator_get_supply(mmc);
+
 	host->irq = platform_get_irq(pdev, 0);
 	if (host->irq < 0) {
 		ret = host->irq;

drivers/mmc/host/mmc_spi.c

@@ -1453,7 +1453,7 @@ static int mmc_spi_probe(struct spi_device *spi)
 	mmc_detect_change(mmc, 0);
 
 	/* Index 1 is write protect/read only */
-	status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL);
+	status = mmc_gpiod_request_ro(mmc, NULL, 1, 0, NULL);
 	if (status == -EPROBE_DEFER)
 		goto fail_add_host;
 	if (!status)

drivers/mmc/host/mmci.c

@@ -1127,6 +1127,12 @@ mmci_start_command(struct mmci_host *host, struct mmc_command *cmd, u32 c)
 	writel(c, base + MMCICOMMAND);
 }
 
+static void mmci_stop_command(struct mmci_host *host)
+{
+	host->stop_abort.error = 0;
+	mmci_start_command(host, &host->stop_abort, 0);
+}
+
 static void
 mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
 	      unsigned int status)
@@ -1196,10 +1202,16 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
 			/* The error clause is handled above, success! */
 			data->bytes_xfered = data->blksz * data->blocks;
 
-		if (!data->stop || (host->mrq->sbc && !data->error))
+		if (!data->stop) {
+			if (host->variant->cmdreg_stop && data->error)
+				mmci_stop_command(host);
+			else
+				mmci_request_end(host, data->mrq);
+		} else if (host->mrq->sbc && !data->error) {
 			mmci_request_end(host, data->mrq);
-		else
+		} else {
 			mmci_start_command(host, data->stop, 0);
+		}
 	}
 }
 
@@ -1298,6 +1310,10 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
 			mmci_dma_error(host);
 
 			mmci_stop_data(host);
+			if (host->variant->cmdreg_stop && cmd->error) {
+				mmci_stop_command(host);
+				return;
+			}
 		}
 		mmci_request_end(host, host->mrq);
 	} else if (sbc) {
@@ -1956,6 +1972,11 @@ static int mmci_probe(struct amba_device *dev,
 		mmc->max_busy_timeout = 0;
 	}
 
+	/* Prepare a CMD12 - needed to clear the DPSM on some variants. */
+	host->stop_abort.opcode = MMC_STOP_TRANSMISSION;
+	host->stop_abort.arg = 0;
+	host->stop_abort.flags = MMC_RSP_R1B | MMC_CMD_AC;
+
 	mmc->ops = &mmci_ops;
 
 	/* We support these PM capabilities. */
@@ -2011,7 +2032,7 @@ static int mmci_probe(struct amba_device *dev,
 		if (ret == -EPROBE_DEFER)
 			goto clk_disable;
 
-		ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL);
+		ret = mmc_gpiod_request_ro(mmc, "wp", 0, 0, NULL);
 		if (ret == -EPROBE_DEFER)
 			goto clk_disable;
 	}

drivers/mmc/host/mmci.h

@@ -377,6 +377,7 @@ struct mmci_host {
 	void __iomem		*base;
 	struct mmc_request	*mrq;
 	struct mmc_command	*cmd;
+	struct mmc_command	stop_abort;
 	struct mmc_data		*data;
 	struct mmc_host		*mmc;
 	struct clk		*clk;

drivers/mmc/host/mxcmmc.c

@@ -31,14 +31,12 @@
 #include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/io.h>
-#include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/dmaengine.h>
 #include <linux/types.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_dma.h>
-#include <linux/of_gpio.h>
 #include <linux/mmc/slot-gpio.h>
 
 #include <asm/dma.h>

drivers/mmc/host/mxs-mmc.c

@@ -25,7 +25,6 @@
 #include <linux/ioport.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
@@ -39,7 +38,6 @@
 #include <linux/mmc/mmc.h>
 #include <linux/mmc/sdio.h>
 #include <linux/mmc/slot-gpio.h>
-#include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/module.h>
 #include <linux/stmp_device.h>

drivers/mmc/host/of_mmc_spi.c

@@ -61,9 +61,6 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
 	struct device *dev = &spi->dev;
 	struct device_node *np = dev->of_node;
 	struct of_mmc_spi *oms;
-	const __be32 *voltage_ranges;
-	int num_ranges;
-	int i;
 
 	if (dev->platform_data || !np)
 		return dev->platform_data;
@@ -72,25 +69,8 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
 	if (!oms)
 		return NULL;
 
-	voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
-	num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
-	if (!voltage_ranges || !num_ranges) {
-		dev_err(dev, "OF: voltage-ranges unspecified\n");
+	if (mmc_of_parse_voltage(np, &oms->pdata.ocr_mask) <= 0)
 		goto err_ocr;
-	}
-
-	for (i = 0; i < num_ranges; i++) {
-		const int j = i * 2;
-		u32 mask;
-
-		mask = mmc_vddrange_to_ocrmask(be32_to_cpu(voltage_ranges[j]),
-					       be32_to_cpu(voltage_ranges[j + 1]));
-		if (!mask) {
-			dev_err(dev, "OF: voltage-range #%d is invalid\n", i);
-			goto err_ocr;
-		}
-		oms->pdata.ocr_mask |= mask;
-	}
 
 	oms->detect_irq = irq_of_parse_and_map(np, 0);
 	if (oms->detect_irq != 0) {

drivers/mmc/host/omap.c

@@ -920,7 +920,7 @@ static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_reques
 	reg &= ~(1 << 5);
 	OMAP_MMC_WRITE(host, SDIO, reg);
 	/* Set maximum timeout */
-	OMAP_MMC_WRITE(host, CTO, 0xff);
+	OMAP_MMC_WRITE(host, CTO, 0xfd);
 }
 
 static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)

drivers/mmc/host/pxamci.c

@@ -743,7 +743,7 @@ static int pxamci_probe(struct platform_device *pdev)
 			goto out;
 		}
 
-		ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL);
+		ret = mmc_gpiod_request_ro(mmc, "wp", 0, 0, NULL);
 		if (ret && ret != -ENOENT) {
 			dev_err(dev, "Failed requesting gpio_ro\n");
 			goto out;

drivers/mmc/host/renesas_sdhi.h

@@ -15,6 +15,7 @@
 struct renesas_sdhi_scc {
 	unsigned long clk_rate;	/* clock rate for SDR104 */
 	u32 tap;		/* sampling clock position for SDR104 */
+	u32 tap_hs400;		/* sampling clock position for HS400 */
 };
 
 struct renesas_sdhi_of_data {
@@ -49,6 +50,7 @@ struct renesas_sdhi {
 	struct pinctrl_state *pins_default, *pins_uhs;
 	void __iomem *scc_ctl;
 	u32 scc_tappos;
+	u32 scc_tappos_hs400;
 };
 
 #define host_to_priv(host) \

drivers/mmc/host/renesas_sdhi_core.c

@@ -337,6 +337,10 @@ static void renesas_sdhi_hs400_complete(struct tmio_mmc_host *host)
 	/* Set HS400 mode */
 	sd_ctrl_write16(host, CTL_SDIF_MODE, 0x0001 |
 			sd_ctrl_read16(host, CTL_SDIF_MODE));
+
+	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_DT2FF,
+		       priv->scc_tappos_hs400);
+
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TMPPORT2,
 		       (SH_MOBILE_SDHI_SCC_TMPPORT2_HS400EN |
 			SH_MOBILE_SDHI_SCC_TMPPORT2_HS400OSEL) |
@@ -396,6 +400,9 @@ static void renesas_sdhi_reset_hs400_mode(struct tmio_mmc_host *host,
 	/* Reset HS400 mode */
 	sd_ctrl_write16(host, CTL_SDIF_MODE, ~0x0001 &
 			sd_ctrl_read16(host, CTL_SDIF_MODE));
+
+	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_DT2FF, priv->scc_tappos);
+
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_TMPPORT2,
 		       ~(SH_MOBILE_SDHI_SCC_TMPPORT2_HS400EN |
 			 SH_MOBILE_SDHI_SCC_TMPPORT2_HS400OSEL) &
@@ -723,6 +730,13 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 		host->ops.start_signal_voltage_switch =
 			renesas_sdhi_start_signal_voltage_switch;
 		host->sdcard_irq_setbit_mask = TMIO_STAT_ALWAYS_SET_27;
+
+		/* SDR and HS200/400 registers requires HW reset */
+		if (of_data && of_data->scc_offset) {
+			priv->scc_ctl = host->ctl + of_data->scc_offset;
+			host->mmc->caps |= MMC_CAP_HW_RESET;
+			host->hw_reset = renesas_sdhi_hw_reset;
+		}
 	}
 
 	/* Orginally registers were 16 bit apart, could be 32 or 64 nowadays */
@@ -775,12 +789,11 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 		const struct renesas_sdhi_scc *taps = of_data->taps;
 		bool hit = false;
 
-		host->mmc->caps |= MMC_CAP_HW_RESET;
-
 		for (i = 0; i < of_data->taps_num; i++) {
 			if (taps[i].clk_rate == 0 ||
 			    taps[i].clk_rate == host->mmc->f_max) {
 				priv->scc_tappos = taps->tap;
+				priv->scc_tappos_hs400 = taps->tap_hs400;
 				hit = true;
 				break;
 			}
@@ -789,12 +802,10 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 		if (!hit)
 			dev_warn(&host->pdev->dev, "Unknown clock rate for SDR104\n");
 
-		priv->scc_ctl = host->ctl + of_data->scc_offset;
 		host->init_tuning = renesas_sdhi_init_tuning;
 		host->prepare_tuning = renesas_sdhi_prepare_tuning;
 		host->select_tuning = renesas_sdhi_select_tuning;
 		host->check_scc_error = renesas_sdhi_check_scc_error;
-		host->hw_reset = renesas_sdhi_hw_reset;
 		host->prepare_hs400_tuning =
 			renesas_sdhi_prepare_hs400_tuning;
 		host->hs400_downgrade = renesas_sdhi_disable_scc;

drivers/mmc/host/renesas_sdhi_internal_dmac.c

@@ -81,6 +81,7 @@ static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = {
 	{
 		.clk_rate = 0,
 		.tap = 0x00000300,
+		.tap_hs400 = 0x00000704,
 	},
 };
 

drivers/mmc/host/s3cmci.c

@@ -1530,7 +1530,7 @@ static int s3cmci_probe_pdata(struct s3cmci_host *host)
 		return ret;
 	}
 
-	ret = mmc_gpiod_request_ro(host->mmc, "wp", 0, false, 0, NULL);
+	ret = mmc_gpiod_request_ro(host->mmc, "wp", 0, 0, NULL);
 	if (ret != -ENOENT) {
 		dev_err(&pdev->dev, "error requesting GPIO for WP %d\n",
 			ret);

drivers/mmc/host/sdhci-bcm-kona.c

@@ -18,12 +18,10 @@
 #include <linux/platform_device.h>
 #include <linux/mmc/host.h>
 #include <linux/io.h>
-#include <linux/gpio.h>
 #include <linux/clk.h>
 #include <linux/regulator/consumer.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/mmc/slot-gpio.h>
 
 #include "sdhci-pltfm.h"

drivers/mmc/host/sdhci-brcmstb.c

@@ -55,7 +55,9 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
 	}
 
 	sdhci_get_of_property(pdev);
-	mmc_of_parse(host->mmc);
+	res = mmc_of_parse(host->mmc);
+	if (res)
+		goto err;
 
 	/*
 	 * Supply the existing CAPS, but clear the UHS modes. This

drivers/mmc/host/sdhci-omap.c

@@ -1097,7 +1097,6 @@ static int sdhci_omap_probe(struct platform_device *pdev)
 		goto err_put_sync;
 	}
 
-	host->mmc_host_ops.get_ro = mmc_gpio_get_ro;
 	host->mmc_host_ops.start_signal_voltage_switch =
 					sdhci_omap_start_signal_voltage_switch;
 	host->mmc_host_ops.set_ios = sdhci_omap_set_ios;

drivers/mmc/host/sdhci-pci-core.c

@@ -1257,16 +1257,6 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
 }
 #endif
 
-static const struct sdhci_pci_fixes sdhci_o2 = {
-	.probe = sdhci_pci_o2_probe,
-	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
-	.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
-	.probe_slot = sdhci_pci_o2_probe_slot,
-#ifdef CONFIG_PM_SLEEP
-	.resume = sdhci_pci_o2_resume,
-#endif
-};
-
 static const struct sdhci_pci_fixes sdhci_jmicron = {
 	.probe		= jmicron_probe,
 

drivers/mmc/host/sdhci-pci-o2micro.c

@@ -60,6 +60,13 @@
 #define O2_SD_VENDOR_SETTING2	0x1C8
 #define O2_SD_HW_TUNING_DISABLE	BIT(4)
 
+#define O2_PLL_WDT_CONTROL1	0x1CC
+#define  O2_PLL_FORCE_ACTIVE	BIT(18)
+#define  O2_PLL_LOCK_STATUS	BIT(14)
+#define  O2_PLL_SOFT_RESET	BIT(12)
+
+#define O2_SD_DETECT_SETTING 0x324
+
 static void sdhci_o2_set_tuning_mode(struct sdhci_host *host)
 {
 	u16 reg;
@@ -283,6 +290,113 @@ static void sdhci_pci_o2_enable_msi(struct sdhci_pci_chip *chip,
 	host->irq = pci_irq_vector(chip->pdev, 0);
 }
 
+static void sdhci_o2_wait_card_detect_stable(struct sdhci_host *host)
+{
+	ktime_t timeout;
+	u32 scratch32;
+
+	/* Wait max 50 ms */
+	timeout = ktime_add_ms(ktime_get(), 50);
+	while (1) {
+		bool timedout = ktime_after(ktime_get(), timeout);
+
+		scratch32 = sdhci_readl(host, SDHCI_PRESENT_STATE);
+		if ((scratch32 & SDHCI_CARD_PRESENT) >> SDHCI_CARD_PRES_SHIFT
+		    == (scratch32 & SDHCI_CD_LVL) >> SDHCI_CD_LVL_SHIFT)
+			break;
+
+		if (timedout) {
+			pr_err("%s: Card Detect debounce never finished.\n",
+			       mmc_hostname(host->mmc));
+			sdhci_dumpregs(host);
+			return;
+		}
+		udelay(10);
+	}
+}
+
+static void sdhci_o2_enable_internal_clock(struct sdhci_host *host)
+{
+	ktime_t timeout;
+	u16 scratch;
+	u32 scratch32;
+
+	/* PLL software reset */
+	scratch32 = sdhci_readl(host, O2_PLL_WDT_CONTROL1);
+	scratch32 |= O2_PLL_SOFT_RESET;
+	sdhci_writel(host, scratch32, O2_PLL_WDT_CONTROL1);
+	udelay(1);
+	scratch32 &= ~(O2_PLL_SOFT_RESET);
+	sdhci_writel(host, scratch32, O2_PLL_WDT_CONTROL1);
+
+	/* PLL force active */
+	scratch32 |= O2_PLL_FORCE_ACTIVE;
+	sdhci_writel(host, scratch32, O2_PLL_WDT_CONTROL1);
+
+	/* Wait max 20 ms */
+	timeout = ktime_add_ms(ktime_get(), 20);
+	while (1) {
+		bool timedout = ktime_after(ktime_get(), timeout);
+
+		scratch = sdhci_readw(host, O2_PLL_WDT_CONTROL1);
+		if (scratch & O2_PLL_LOCK_STATUS)
+			break;
+		if (timedout) {
+			pr_err("%s: Internal clock never stabilised.\n",
+			       mmc_hostname(host->mmc));
+			sdhci_dumpregs(host);
+			goto out;
+		}
+		udelay(10);
+	}
+
+	/* Wait for card detect finish */
+	udelay(1);
+	sdhci_o2_wait_card_detect_stable(host);
+
+out:
+	/* Cancel PLL force active */
+	scratch32 = sdhci_readl(host, O2_PLL_WDT_CONTROL1);
+	scratch32 &= ~O2_PLL_FORCE_ACTIVE;
+	sdhci_writel(host, scratch32, O2_PLL_WDT_CONTROL1);
+}
+
+static int sdhci_o2_get_cd(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+
+	sdhci_o2_enable_internal_clock(host);
+
+	return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
+}
+
+static void sdhci_o2_enable_clk(struct sdhci_host *host, u16 clk)
+{
+	/* Enable internal clock */
+	clk |= SDHCI_CLOCK_INT_EN;
+	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+	if (sdhci_o2_get_cd(host->mmc)) {
+		clk |= SDHCI_CLOCK_CARD_EN;
+		sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+	}
+}
+
+void sdhci_pci_o2_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+	u16 clk;
+
+	host->mmc->actual_clock = 0;
+
+	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+	if (clock == 0)
+		return;
+
+	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+	sdhci_o2_enable_clk(host, clk);
+}
+
 int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot)
 {
 	struct sdhci_pci_chip *chip;
@@ -314,9 +428,14 @@ int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot)
 					mmc_hostname(host->mmc));
 				host->flags &= ~SDHCI_SIGNALING_330;
 				host->flags |= SDHCI_SIGNALING_180;
+				host->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
 				host->mmc->caps2 |= MMC_CAP2_NO_SD;
 				host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
+				pci_write_config_dword(chip->pdev,
+						       O2_SD_DETECT_SETTING, 3);
 			}
+
+			slot->host->mmc_host_ops.get_cd = sdhci_o2_get_cd;
 		}
 
 		host->mmc_host_ops.execute_tuning = sdhci_o2_execute_tuning;
@@ -490,9 +609,6 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
 		pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
 		break;
 	case PCI_DEVICE_ID_O2_SEABIRD0:
-		if (chip->pdev->revision == 0x01)
-			chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
-		/* fall through */
 	case PCI_DEVICE_ID_O2_SEABIRD1:
 		/* UnLock WP */
 		ret = pci_read_config_byte(chip->pdev,
@@ -550,3 +666,21 @@ int sdhci_pci_o2_resume(struct sdhci_pci_chip *chip)
 	return sdhci_pci_resume_host(chip);
 }
 #endif
+
+static const struct sdhci_ops sdhci_pci_o2_ops = {
+	.set_clock = sdhci_pci_o2_set_clock,
+	.enable_dma = sdhci_pci_enable_dma,
+	.set_bus_width = sdhci_set_bus_width,
+	.reset = sdhci_reset,
+	.set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
+const struct sdhci_pci_fixes sdhci_o2 = {
+	.probe = sdhci_pci_o2_probe,
+	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+	.probe_slot = sdhci_pci_o2_probe_slot,
+#ifdef CONFIG_PM_SLEEP
+	.resume = sdhci_pci_o2_resume,
+#endif
+	.ops = &sdhci_pci_o2_ops,
+};

drivers/mmc/host/sdhci-pci.h

@@ -179,13 +179,9 @@ static inline void *sdhci_pci_priv(struct sdhci_pci_slot *slot)
 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip);
 #endif
 int sdhci_pci_enable_dma(struct sdhci_host *host);
-int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot);
-int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip);
-#ifdef CONFIG_PM_SLEEP
-int sdhci_pci_o2_resume(struct sdhci_pci_chip *chip);
-#endif
 
 extern const struct sdhci_pci_fixes sdhci_arasan;
 extern const struct sdhci_pci_fixes sdhci_snps;
+extern const struct sdhci_pci_fixes sdhci_o2;
 
 #endif /* __SDHCI_PCI_H */

drivers/mmc/host/sdhci-pxav2.c

@@ -23,7 +23,6 @@
 #include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/io.h>
-#include <linux/gpio.h>
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
 #include <linux/platform_data/pxa_sdhci.h>

drivers/mmc/host/sdhci-xenon-phy.c

@@ -530,7 +530,7 @@ static bool xenon_emmc_phy_slow_mode(struct sdhci_host *host,
 			ret = true;
 			break;
 		}
-		/* else: fall through */
+		/* fall through */
 	default:
 		reg &= ~XENON_TIMING_ADJUST_SLOW_MODE;
 		ret = false;

drivers/mmc/host/sdhci.c

@@ -883,7 +883,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
 			     bool *too_big)
 {
 	u8 count;
-	struct mmc_data *data = cmd->data;
+	struct mmc_data *data;
 	unsigned target_timeout, current_timeout;
 
 	*too_big = true;
@@ -897,6 +897,11 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
 	if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)
 		return 0xE;
 
+	/* Unspecified command, asume max */
+	if (cmd == NULL)
+		return 0xE;
+
+	data = cmd->data;
 	/* Unspecified timeout, assume max */
 	if (!data && !cmd->busy_timeout)
 		return 0xE;
@@ -2048,6 +2053,8 @@ static int sdhci_check_ro(struct sdhci_host *host)
 		is_readonly = 0;
 	else if (host->ops->get_ro)
 		is_readonly = host->ops->get_ro(host);
+	else if (mmc_can_gpio_ro(host->mmc))
+		is_readonly = mmc_gpio_get_ro(host->mmc);
 	else
 		is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE)
 				& SDHCI_WRITE_PROTECT);
@@ -2376,6 +2383,10 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
 			return -ETIMEDOUT;
 		}
 
+		/* Spec does not require a delay between tuning cycles */
+		if (host->tuning_delay > 0)
+			mdelay(host->tuning_delay);
+
 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 		if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) {
 			if (ctrl & SDHCI_CTRL_TUNED_CLK)
@@ -2383,9 +2394,6 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
 			break;
 		}
 
-		/* Spec does not require a delay between tuning cycles */
-		if (host->tuning_delay > 0)
-			mdelay(host->tuning_delay);
 	}
 
 	pr_info("%s: Tuning failed, falling back to fixed sampling clock\n",
@@ -3353,7 +3361,14 @@ void sdhci_cqe_enable(struct mmc_host *mmc)
 
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	ctrl &= ~SDHCI_CTRL_DMA_MASK;
-	if (host->flags & SDHCI_USE_64_BIT_DMA)
+	/*
+	 * Host from V4.10 supports ADMA3 DMA type.
+	 * ADMA3 performs integrated descriptor which is more suitable
+	 * for cmd queuing to fetch both command and transfer descriptors.
+	 */
+	if (host->v4_mode && (host->caps1 & SDHCI_CAN_DO_ADMA3))
+		ctrl |= SDHCI_CTRL_ADMA3;
+	else if (host->flags & SDHCI_USE_64_BIT_DMA)
 		ctrl |= SDHCI_CTRL_ADMA64;
 	else
 		ctrl |= SDHCI_CTRL_ADMA32;
@@ -3363,7 +3378,7 @@ void sdhci_cqe_enable(struct mmc_host *mmc)
 		     SDHCI_BLOCK_SIZE);
 
 	/* Set maximum timeout */
-	sdhci_writeb(host, 0xE, SDHCI_TIMEOUT_CONTROL);
+	sdhci_set_timeout(host, NULL);
 
 	host->ier = host->cqe_ier;
 

drivers/mmc/host/sdhci.h

@@ -73,6 +73,10 @@
 #define  SDHCI_SPACE_AVAILABLE	0x00000400
 #define  SDHCI_DATA_AVAILABLE	0x00000800
 #define  SDHCI_CARD_PRESENT	0x00010000
+#define   SDHCI_CARD_PRES_SHIFT	16
+#define  SDHCI_CD_STABLE	0x00020000
+#define  SDHCI_CD_LVL		0x00040000
+#define   SDHCI_CD_LVL_SHIFT	18
 #define  SDHCI_WRITE_PROTECT	0x00080000
 #define  SDHCI_DATA_LVL_MASK	0x00F00000
 #define   SDHCI_DATA_LVL_SHIFT	20
@@ -88,6 +92,7 @@
 #define   SDHCI_CTRL_ADMA1	0x08
 #define   SDHCI_CTRL_ADMA32	0x10
 #define   SDHCI_CTRL_ADMA64	0x18
+#define   SDHCI_CTRL_ADMA3	0x18
 #define   SDHCI_CTRL_8BITBUS	0x20
 #define  SDHCI_CTRL_CDTEST_INS	0x40
 #define  SDHCI_CTRL_CDTEST_EN	0x80
@@ -230,6 +235,7 @@
 #define  SDHCI_RETUNING_MODE_SHIFT		14
 #define  SDHCI_CLOCK_MUL_MASK	0x00FF0000
 #define  SDHCI_CLOCK_MUL_SHIFT	16
+#define  SDHCI_CAN_DO_ADMA3	0x08000000
 #define  SDHCI_SUPPORT_HS400	0x80000000 /* Non-standard */
 
 #define SDHCI_CAPABILITIES_1	0x44

drivers/mmc/host/sdhci_am654.c

@@ -158,7 +158,7 @@ static void sdhci_am654_set_power(struct sdhci_host *host, unsigned char mode,
 	sdhci_set_power_noreg(host, mode, vdd);
 }
 
-struct sdhci_ops sdhci_am654_ops = {
+static struct sdhci_ops sdhci_am654_ops = {
 	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
 	.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
 	.set_uhs_signaling = sdhci_set_uhs_signaling,

drivers/mmc/host/sunxi-mmc.c

@@ -19,7 +19,6 @@
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
@@ -32,7 +31,6 @@
 #include <linux/mmc/slot-gpio.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
-#include <linux/of_gpio.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>

drivers/mmc/host/tmio_mmc_core.c

@@ -1073,7 +1073,7 @@ static int tmio_mmc_init_ocr(struct tmio_mmc_host *host)
 
 	/* use ocr_mask if no regulator */
 	if (!mmc->ocr_avail)
-		mmc->ocr_avail =  pdata->ocr_mask;
+		mmc->ocr_avail = pdata->ocr_mask;
 
 	/*
 	 * try again.
@@ -1294,6 +1294,7 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
 	cancel_delayed_work_sync(&host->delayed_reset_work);
 	tmio_mmc_release_dma(host);
 
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 }

drivers/mmc/host/wmt-sdmmc.c

@@ -19,7 +19,6 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/clk.h>
-#include <linux/gpio.h>
 #include <linux/interrupt.h>
 
 #include <linux/of.h>

include/linux/mmc/card.h

@@ -133,6 +133,8 @@ struct mmc_ext_csd {
 struct sd_scr {
 	unsigned char		sda_vsn;
 	unsigned char		sda_spec3;
+	unsigned char		sda_spec4;
+	unsigned char		sda_specx;
 	unsigned char		bus_widths;
 #define SD_SCR_BUS_WIDTH_1	(1<<0)
 #define SD_SCR_BUS_WIDTH_4	(1<<2)
@@ -277,6 +279,7 @@ struct mmc_card {
  	unsigned int		erase_shift;	/* if erase unit is power 2 */
  	unsigned int		pref_erase;	/* in sectors */
 	unsigned int		eg_boundary;	/* don't cross erase-group boundaries */
+	unsigned int		erase_arg;	/* erase / trim / discard */
  	u8			erased_byte;	/* value of erased bytes */
 
 	u32			raw_cid[4];	/* raw card CID */

include/linux/mmc/host.h

@@ -478,6 +478,11 @@ static inline void *mmc_priv(struct mmc_host *host)
 	return (void *)host->private;
 }
 
+static inline struct mmc_host *mmc_from_priv(void *priv)
+{
+	return container_of(priv, struct mmc_host, private);
+}
+
 #define mmc_host_is_spi(host)	((host)->caps & MMC_CAP_SPI)
 
 #define mmc_dev(x)	((x)->parent)
@@ -502,17 +507,11 @@ void sdio_run_irqs(struct mmc_host *host);
 void sdio_signal_irq(struct mmc_host *host);
 
 #ifdef CONFIG_REGULATOR
-int mmc_regulator_get_ocrmask(struct regulator *supply);
 int mmc_regulator_set_ocr(struct mmc_host *mmc,
 			struct regulator *supply,
 			unsigned short vdd_bit);
 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
 #else
-static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
-{
-	return 0;
-}
-
 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
 				 struct regulator *supply,
 				 unsigned short vdd_bit)
@@ -527,7 +526,6 @@ static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
 }
 #endif
 
-u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
 int mmc_regulator_get_supply(struct mmc_host *mmc);
 
 static inline int mmc_card_is_removable(struct mmc_host *host)

include/linux/mmc/sd.h

@@ -91,4 +91,10 @@
 #define SD_SWITCH_ACCESS_DEF	0
 #define SD_SWITCH_ACCESS_HS	1
 
+/*
+ * Erase/discard
+ */
+#define SD_ERASE_ARG			0x00000000
+#define SD_DISCARD_ARG			0x00000001
+
 #endif /* LINUX_MMC_SD_H */

include/linux/mmc/slot-gpio.h

@@ -22,7 +22,7 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
 			 unsigned int idx, bool override_active_level,
 			 unsigned int debounce, bool *gpio_invert);
 int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
-			 unsigned int idx, bool override_active_level,
+			 unsigned int idx,
 			 unsigned int debounce, bool *gpio_invert);
 void mmc_gpio_set_cd_isr(struct mmc_host *host,
 			 irqreturn_t (*isr)(int irq, void *dev_id));