Merge tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.11:

  Core:
   - Add support for eMMC 5.1 devices
   - Add MMC_CAP_AGGRESSIVE_PM capability for aggressive power
     management of eMMC/SD between requests, using runtime PM
   - Add an ioctl to perform the eMMC 4.5 Sanitize command.  Sample code
     at:

       git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

  Drivers:
   - dw_mmc: Add support for Rockchip's Cortex-A9 SoCs
   - dw_mmc: Add support for Altera SoCFPGAs
   - sdhci-esdhc-imx: Add support for 8-bit bus width, non-removable
     cards
   - sdhci-bcm-kona: New driver for Broadcom Kona (281xx) SoCs
   - sdhi/tmio: Add DT DMA support"

* tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (87 commits)
  mmc: bcm281xx SDHCI driver
  mmc: sdhci: add card_event callback to sdhci
  mmc: core: Fixup Oops for SDIO shutdown
  mmc: sdhci-pci: add another device id
  mmc: esdhc: Fix bug when writing to SDHCI_HOST_CONTROL register
  mmc: esdhc: Add support for 8-bit bus width and non-removable card
  mmc: core: production year for eMMC 4.41 and later
  mmc: omap: remove unnecessary #if 0's
  mmc: sdhci: fix ctrl_2 on super-speed selection
  mmc: dw_mmc-pltfm: add Rockchip variant
  mmc: dw_mmc-pltfm: move probe and remove below dt match table
  mmc: dw_mmc-pltfm: remove static from dw_mci_pltfm_remove
  mmc: sdhci-acpi: add support for eMMC hardware reset for HID 80860F14
  mmc: sdhci-pci: add support for eMMC hardware reset for BYT eMMC.
  mmc: dw_mmc: Add support DW SD/MMC driver on SOCFPGA
  mmc: sdhci: fix caps2 for HS200
  sdhci-pxav3: Fix runtime PM initialization
  mmc: core: Add DT-bindings for MMC_CAP2_FULL_PWR_CYCLE
  mmc: core: Invent MMC_CAP2_FULL_PWR_CYCLE
  mmc: core: Enable power_off_notify for eMMC shutdown sequence
  ...

Documentation/devicetree/bindings/mmc/mmc.txt

@@ -28,6 +28,7 @@ Optional properties:
 - cap-mmc-highspeed: MMC high-speed timing is supported
 - cap-power-off-card: powering off the card is safe
 - cap-sdio-irq: enable SDIO IRQ signalling on this interface
+- full-pwr-cycle: full power cycle of the card is supported
 
 *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/rockchip-dw-mshc.txt

@@ -0,0 +1,23 @@
+* Rockchip specific extensions to the Synopsis Designware Mobile
+  Storage Host Controller
+
+The Synopsis designware mobile storage host controller is used to interface
+a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
+differences between the core Synopsis dw mshc controller properties described
+by synopsis-dw-mshc.txt and the properties used by the Rockchip specific
+extensions to the Synopsis Designware Mobile Storage Host Controller.
+
+Required Properties:
+
+* compatible: should be
+	- "rockchip,rk2928-dw-mshc": for Rockchip RK2928 and following
+
+Example:
+
+	rkdwmmc0@12200000 {
+		compatible = "rockchip,rk2928-dw-mshc";
+		reg = <0x12200000 0x1000>;
+		interrupts = <0 75 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};

Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt

@@ -39,6 +39,19 @@ Required Properties:
 
 Optional properties:
 
+* clocks: from common clock binding: handle to biu and ciu clocks for the
+  bus interface unit clock and the card interface unit clock.
+
+* clock-names: from common clock binding: Shall be "biu" and "ciu".
+  If the biu clock is missing we'll simply skip enabling it.  If the
+  ciu clock is missing we'll just assume that the clock is running at
+  clock-frequency.  It is an error to omit both the ciu clock and the
+  clock-frequency.
+
+* clock-frequency: should be the frequency (in Hz) of the ciu clock.  If this
+  is specified and the ciu clock is specified then we'll try to set the ciu
+  clock to this at probe time.
+
 * num-slots: specifies the number of slots supported by the controller.
   The number of physical slots actually used could be equal or less than the
   value specified by num-slots. If this property is not specified, the value
@@ -55,6 +68,9 @@ Optional properties:
 
 * broken-cd: as documented in mmc core bindings.
 
+* vmmc-supply: The phandle to the regulator to use for vmmc.  If this is
+  specified we'll defer probe until we can find this regulator.
+
 Aliases:
 
 - All the MSHC controller nodes should be represented in the aliases node using
@@ -67,6 +83,8 @@ board specific portions as listed below.
 
 	dwmmc0@12200000 {
 		compatible = "snps,dw-mshc";
+		clocks = <&clock 351>, <&clock 132>;
+		clock-names = "biu", "ciu";
 		reg = <0x12200000 0x1000>;
 		interrupts = <0 75 0>;
 		#address-cells = <1>;
@@ -74,11 +92,13 @@ board specific portions as listed below.
 	};
 
 	dwmmc0@12200000 {
+		clock-frequency = <400000000>;
 		num-slots = <1>;
 		supports-highspeed;
 		broken-cd;
 		fifo-depth = <0x80>;
 		card-detect-delay = <200>;
+		vmmc-supply = <&buck8>;
 
 		slot@0 {
 			reg = <0>;

arch/arm/configs/bcm_defconfig

@@ -78,6 +78,13 @@ CONFIG_BACKLIGHT_LCD_SUPPORT=y
 CONFIG_LCD_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 # CONFIG_USB_SUPPORT is not set
+CONFIG_MMC=y
+CONFIG_MMC_UNSAFE_RESUME=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_TEST=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_SDHCI_BCM_KONA=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
 CONFIG_LEDS_TRIGGERS=y

drivers/mmc/card/block.c

@@ -34,6 +34,7 @@
 #include <linux/delay.h>
 #include <linux/capability.h>
 #include <linux/compat.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/mmc/ioctl.h>
 #include <linux/mmc/card.h>
@@ -58,6 +59,8 @@ MODULE_ALIAS("mmc:block");
 #define INAND_CMD38_ARG_SECTRIM1 0x81
 #define INAND_CMD38_ARG_SECTRIM2 0x88
 #define MMC_BLK_TIMEOUT_MS  (10 * 60 * 1000)        /* 10 minute timeout */
+#define MMC_SANITIZE_REQ_TIMEOUT 240000
+#define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16)
 
 #define mmc_req_rel_wr(req)	(((req->cmd_flags & REQ_FUA) || \
 				  (req->cmd_flags & REQ_META)) && \
@@ -222,7 +225,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
 	md = mmc_blk_get(dev_to_disk(dev));
 	card = md->queue.card;
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 
 	ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP,
 				card->ext_csd.boot_ro_lock |
@@ -233,7 +236,7 @@ static ssize_t power_ro_lock_store(struct device *dev,
 	else
 		card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN;
 
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 
 	if (!ret) {
 		pr_info("%s: Locking boot partition ro until next power on\n",
@@ -408,6 +411,35 @@ static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status,
 	return err;
 }
 
+static int ioctl_do_sanitize(struct mmc_card *card)
+{
+	int err;
+
+	if (!(mmc_can_sanitize(card) &&
+	      (card->host->caps2 & MMC_CAP2_SANITIZE))) {
+			pr_warn("%s: %s - SANITIZE is not supported\n",
+				mmc_hostname(card->host), __func__);
+			err = -EOPNOTSUPP;
+			goto out;
+	}
+
+	pr_debug("%s: %s - SANITIZE IN PROGRESS...\n",
+		mmc_hostname(card->host), __func__);
+
+	err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+					EXT_CSD_SANITIZE_START, 1,
+					MMC_SANITIZE_REQ_TIMEOUT);
+
+	if (err)
+		pr_err("%s: %s - EXT_CSD_SANITIZE_START failed. err=%d\n",
+		       mmc_hostname(card->host), __func__, err);
+
+	pr_debug("%s: %s - SANITIZE COMPLETED\n", mmc_hostname(card->host),
+					     __func__);
+out:
+	return err;
+}
+
 static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	struct mmc_ioc_cmd __user *ic_ptr)
 {
@@ -491,7 +523,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 
 	mrq.cmd = &cmd;
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 
 	err = mmc_blk_part_switch(card, md);
 	if (err)
@@ -510,6 +542,17 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 			goto cmd_rel_host;
 	}
 
+	if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_SANITIZE_START) &&
+	    (cmd.opcode == MMC_SWITCH)) {
+		err = ioctl_do_sanitize(card);
+
+		if (err)
+			pr_err("%s: ioctl_do_sanitize() failed. err = %d",
+			       __func__, err);
+
+		goto cmd_rel_host;
+	}
+
 	mmc_wait_for_req(card->host, &mrq);
 
 	if (cmd.error) {
@@ -558,7 +601,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	}
 
 cmd_rel_host:
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 
 cmd_done:
 	mmc_blk_put(md);
@@ -939,10 +982,10 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 {
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
-	unsigned int from, nr, arg, trim_arg, erase_arg;
+	unsigned int from, nr, arg;
 	int err = 0, type = MMC_BLK_SECDISCARD;
 
-	if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) {
+	if (!(mmc_can_secure_erase_trim(card))) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
@@ -950,23 +993,11 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
 	from = blk_rq_pos(req);
 	nr = blk_rq_sectors(req);
 
-	/* The sanitize operation is supported at v4.5 only */
-	if (mmc_can_sanitize(card)) {
-		erase_arg = MMC_ERASE_ARG;
-		trim_arg = MMC_TRIM_ARG;
-	} else {
-		erase_arg = MMC_SECURE_ERASE_ARG;
-		trim_arg = MMC_SECURE_TRIM1_ARG;
-	}
+	if (mmc_can_trim(card) && !mmc_erase_group_aligned(card, from, nr))
+		arg = MMC_SECURE_TRIM1_ARG;
+	else
+		arg = MMC_SECURE_ERASE_ARG;
 
-	if (mmc_erase_group_aligned(card, from, nr))
-		arg = erase_arg;
-	else if (mmc_can_trim(card))
-		arg = trim_arg;
-	else {
-		err = -EINVAL;
-		goto out;
-	}
 retry:
 	if (card->quirks & MMC_QUIRK_INAND_CMD38) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -1002,9 +1033,6 @@ retry:
 			goto out;
 	}
 
-	if (mmc_can_sanitize(card))
-		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
-				 EXT_CSD_SANITIZE_START, 1, 0);
 out_retry:
 	if (err && !mmc_blk_reset(md, card->host, type))
 		goto retry;
@@ -1895,7 +1923,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
 	if (req && !mq->mqrq_prev->req)
 		/* claim host only for the first request */
-		mmc_claim_host(card->host);
+		mmc_get_card(card);
 
 	ret = mmc_blk_part_switch(card, md);
 	if (ret) {
@@ -1939,7 +1967,7 @@ out:
 		 * In case sepecial request, there is no reentry to
 		 * the 'mmc_blk_issue_rq' with 'mqrq_prev->req'.
 		 */
-		mmc_release_host(card->host);
+		mmc_put_card(card);
 	return ret;
 }
 
@@ -2158,6 +2186,14 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
 	struct mmc_card *card;
 
 	if (md) {
+		/*
+		 * Flush remaining requests and free queues. It
+		 * is freeing the queue that stops new requests
+		 * from being accepted.
+		 */
+		mmc_cleanup_queue(&md->queue);
+		if (md->flags & MMC_BLK_PACKED_CMD)
+			mmc_packed_clean(&md->queue);
 		card = md->queue.card;
 		if (md->disk->flags & GENHD_FL_UP) {
 			device_remove_file(disk_to_dev(md->disk), &md->force_ro);
@@ -2166,14 +2202,8 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
 				device_remove_file(disk_to_dev(md->disk),
 					&md->power_ro_lock);
 
-			/* Stop new requests from getting into the queue */
 			del_gendisk(md->disk);
 		}
-
-		/* Then flush out any already in there */
-		mmc_cleanup_queue(&md->queue);
-		if (md->flags & MMC_BLK_PACKED_CMD)
-			mmc_packed_clean(&md->queue);
 		mmc_blk_put(md);
 	}
 }
@@ -2336,6 +2366,19 @@ static int mmc_blk_probe(struct mmc_card *card)
 		if (mmc_add_disk(part_md))
 			goto out;
 	}
+
+	pm_runtime_set_autosuspend_delay(&card->dev, 3000);
+	pm_runtime_use_autosuspend(&card->dev);
+
+	/*
+	 * Don't enable runtime PM for SD-combo cards here. Leave that
+	 * decision to be taken during the SDIO init sequence instead.
+	 */
+	if (card->type != MMC_TYPE_SD_COMBO) {
+		pm_runtime_set_active(&card->dev);
+		pm_runtime_enable(&card->dev);
+	}
+
 	return 0;
 
  out:
@@ -2349,20 +2392,24 @@ static void mmc_blk_remove(struct mmc_card *card)
 	struct mmc_blk_data *md = mmc_get_drvdata(card);
 
 	mmc_blk_remove_parts(card, md);
+	pm_runtime_get_sync(&card->dev);
 	mmc_claim_host(card->host);
 	mmc_blk_part_switch(card, md);
 	mmc_release_host(card->host);
+	if (card->type != MMC_TYPE_SD_COMBO)
+		pm_runtime_disable(&card->dev);
+	pm_runtime_put_noidle(&card->dev);
 	mmc_blk_remove_req(md);
 	mmc_set_drvdata(card, NULL);
 }
 
-#ifdef CONFIG_PM
-static int mmc_blk_suspend(struct mmc_card *card)
+static int _mmc_blk_suspend(struct mmc_card *card)
 {
 	struct mmc_blk_data *part_md;
 	struct mmc_blk_data *md = mmc_get_drvdata(card);
 
 	if (md) {
+		pm_runtime_get_sync(&card->dev);
 		mmc_queue_suspend(&md->queue);
 		list_for_each_entry(part_md, &md->part, part) {
 			mmc_queue_suspend(&part_md->queue);
@@ -2371,6 +2418,17 @@ static int mmc_blk_suspend(struct mmc_card *card)
 	return 0;
 }
 
+static void mmc_blk_shutdown(struct mmc_card *card)
+{
+	_mmc_blk_suspend(card);
+}
+
+#ifdef CONFIG_PM
+static int mmc_blk_suspend(struct mmc_card *card)
+{
+	return _mmc_blk_suspend(card);
+}
+
 static int mmc_blk_resume(struct mmc_card *card)
 {
 	struct mmc_blk_data *part_md;
@@ -2386,6 +2444,7 @@ static int mmc_blk_resume(struct mmc_card *card)
 		list_for_each_entry(part_md, &md->part, part) {
 			mmc_queue_resume(&part_md->queue);
 		}
+		pm_runtime_put(&card->dev);
 	}
 	return 0;
 }
@@ -2402,6 +2461,7 @@ static struct mmc_driver mmc_driver = {
 	.remove		= mmc_blk_remove,
 	.suspend	= mmc_blk_suspend,
 	.resume		= mmc_blk_resume,
+	.shutdown	= mmc_blk_shutdown,
 };
 
 static int __init mmc_blk_init(void)

drivers/mmc/card/mmc_test.c

@@ -3025,12 +3025,17 @@ static void mmc_test_remove(struct mmc_card *card)
 	mmc_test_free_dbgfs_file(card);
 }
 
+static void mmc_test_shutdown(struct mmc_card *card)
+{
+}
+
 static struct mmc_driver mmc_driver = {
 	.drv		= {
 		.name	= "mmc_test",
 	},
 	.probe		= mmc_test_probe,
 	.remove		= mmc_test_remove,
+	.shutdown	= mmc_test_shutdown,
 };
 
 static int __init mmc_test_init(void)

drivers/mmc/card/queue.c

@@ -173,7 +173,7 @@ static void mmc_queue_setup_discard(struct request_queue *q,
 	/* granularity must not be greater than max. discard */
 	if (card->pref_erase > max_discard)
 		q->limits.discard_granularity = 0;
-	if (mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))
+	if (mmc_can_secure_erase_trim(card))
 		queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, q);
 }
 

drivers/mmc/core/bus.c

@@ -122,15 +122,39 @@ static int mmc_bus_remove(struct device *dev)
 	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 && drv->shutdown)
+		drv->shutdown(card);
+
+	if (host->bus_ops->shutdown) {
+		ret = host->bus_ops->shutdown(host);
+		if (ret)
+			pr_warn("%s: error %d during shutdown\n",
+				mmc_hostname(host), ret);
+	}
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int mmc_bus_suspend(struct device *dev)
 {
 	struct mmc_driver *drv = to_mmc_driver(dev->driver);
 	struct mmc_card *card = mmc_dev_to_card(dev);
-	int ret = 0;
+	struct mmc_host *host = card->host;
+	int ret;
 
-	if (dev->driver && drv->suspend)
+	if (dev->driver && drv->suspend) {
 		ret = drv->suspend(card);
+		if (ret)
+			return ret;
+	}
+
+	ret = host->bus_ops->suspend(host);
 	return ret;
 }
 
@@ -138,10 +162,17 @@ static int mmc_bus_resume(struct device *dev)
 {
 	struct mmc_driver *drv = to_mmc_driver(dev->driver);
 	struct mmc_card *card = mmc_dev_to_card(dev);
-	int ret = 0;
+	struct mmc_host *host = card->host;
+	int ret;
+
+	ret = host->bus_ops->resume(host);
+	if (ret)
+		pr_warn("%s: error %d during resume (card was removed?)\n",
+			mmc_hostname(host), ret);
 
 	if (dev->driver && drv->resume)
 		ret = drv->resume(card);
+
 	return ret;
 }
 #endif
@@ -151,15 +182,25 @@ static int mmc_bus_resume(struct device *dev)
 static int mmc_runtime_suspend(struct device *dev)
 {
 	struct mmc_card *card = mmc_dev_to_card(dev);
+	struct mmc_host *host = card->host;
+	int ret = 0;
+
+	if (host->bus_ops->runtime_suspend)
+		ret = host->bus_ops->runtime_suspend(host);
 
-	return mmc_power_save_host(card->host);
+	return ret;
 }
 
 static int mmc_runtime_resume(struct device *dev)
 {
 	struct mmc_card *card = mmc_dev_to_card(dev);
+	struct mmc_host *host = card->host;
+	int ret = 0;
+
+	if (host->bus_ops->runtime_resume)
+		ret = host->bus_ops->runtime_resume(host);
 
-	return mmc_power_restore_host(card->host);
+	return ret;
 }
 
 static int mmc_runtime_idle(struct device *dev)
@@ -182,6 +223,7 @@ static struct bus_type mmc_bus_type = {
 	.uevent		= mmc_bus_uevent,
 	.probe		= mmc_bus_probe,
 	.remove		= mmc_bus_remove,
+	.shutdown	= mmc_bus_shutdown,
 	.pm		= &mmc_bus_pm_ops,
 };
 

drivers/mmc/core/core.c

@@ -402,6 +402,7 @@ static int mmc_wait_for_data_req_done(struct mmc_host *host,
 			context_info->is_done_rcv = false;
 			context_info->is_new_req = false;
 			cmd = mrq->cmd;
+
 			if (!cmd->error || !cmd->retries ||
 			    mmc_card_removed(host->card)) {
 				err = host->areq->err_check(host->card,
@@ -436,6 +437,24 @@ static void mmc_wait_for_req_done(struct mmc_host *host,
 		wait_for_completion(&mrq->completion);
 
 		cmd = mrq->cmd;
+
+		/*
+		 * If host has timed out waiting for the sanitize
+		 * to complete, card might be still in programming state
+		 * so let's try to bring the card out of programming
+		 * state.
+		 */
+		if (cmd->sanitize_busy && cmd->error == -ETIMEDOUT) {
+			if (!mmc_interrupt_hpi(host->card)) {
+				pr_warning("%s: %s: Interrupted sanitize\n",
+					   mmc_hostname(host), __func__);
+				cmd->error = 0;
+				break;
+			} else {
+				pr_err("%s: %s: Failed to interrupt sanitize\n",
+				       mmc_hostname(host), __func__);
+			}
+		}
 		if (!cmd->error || !cmd->retries ||
 		    mmc_card_removed(host->card))
 			break;
@@ -951,6 +970,29 @@ void mmc_release_host(struct mmc_host *host)
 }
 EXPORT_SYMBOL(mmc_release_host);
 
+/*
+ * This is a helper function, which fetches a runtime pm reference for the
+ * card device and also claims the host.
+ */
+void mmc_get_card(struct mmc_card *card)
+{
+	pm_runtime_get_sync(&card->dev);
+	mmc_claim_host(card->host);
+}
+EXPORT_SYMBOL(mmc_get_card);
+
+/*
+ * This is a helper function, which releases the host and drops the runtime
+ * pm reference for the card device.
+ */
+void mmc_put_card(struct mmc_card *card)
+{
+	mmc_release_host(card->host);
+	pm_runtime_mark_last_busy(&card->dev);
+	pm_runtime_put_autosuspend(&card->dev);
+}
+EXPORT_SYMBOL(mmc_put_card);
+
 /*
  * Internal function that does the actual ios call to the host driver,
  * optionally printing some debug output.
@@ -1459,7 +1501,7 @@ void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type)
  * If a host does all the power sequencing itself, ignore the
  * initial MMC_POWER_UP stage.
  */
-static void mmc_power_up(struct mmc_host *host)
+void mmc_power_up(struct mmc_host *host)
 {
 	int bit;
 
@@ -2325,14 +2367,13 @@ int mmc_detect_card_removed(struct mmc_host *host)
 	 * The card will be considered unchanged unless we have been asked to
 	 * detect a change or host requires polling to provide card detection.
 	 */
-	if (!host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL) &&
-	    !(host->caps2 & MMC_CAP2_DETECT_ON_ERR))
+	if (!host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL))
 		return ret;
 
 	host->detect_change = 0;
 	if (!ret) {
 		ret = _mmc_detect_card_removed(host);
-		if (ret && (host->caps2 & MMC_CAP2_DETECT_ON_ERR)) {
+		if (ret && (host->caps & MMC_CAP_NEEDS_POLL)) {
 			/*
 			 * Schedule a detect work as soon as possible to let a
 			 * rescan handle the card removal.
@@ -2442,9 +2483,7 @@ void mmc_stop_host(struct mmc_host *host)
 	mmc_bus_get(host);
 	if (host->bus_ops && !host->bus_dead) {
 		/* Calling bus_ops->remove() with a claimed host can deadlock */
-		if (host->bus_ops->remove)
-			host->bus_ops->remove(host);
-
+		host->bus_ops->remove(host);
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
 		mmc_power_off(host);
@@ -2509,52 +2548,6 @@ int mmc_power_restore_host(struct mmc_host *host)
 }
 EXPORT_SYMBOL(mmc_power_restore_host);
 
-int mmc_card_awake(struct mmc_host *host)
-{
-	int err = -ENOSYS;
-
-	if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD)
-		return 0;
-
-	mmc_bus_get(host);
-
-	if (host->bus_ops && !host->bus_dead && host->bus_ops->awake)
-		err = host->bus_ops->awake(host);
-
-	mmc_bus_put(host);
-
-	return err;
-}
-EXPORT_SYMBOL(mmc_card_awake);
-
-int mmc_card_sleep(struct mmc_host *host)
-{
-	int err = -ENOSYS;
-
-	if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD)
-		return 0;
-
-	mmc_bus_get(host);
-
-	if (host->bus_ops && !host->bus_dead && host->bus_ops->sleep)
-		err = host->bus_ops->sleep(host);
-
-	mmc_bus_put(host);
-
-	return err;
-}
-EXPORT_SYMBOL(mmc_card_sleep);
-
-int mmc_card_can_sleep(struct mmc_host *host)
-{
-	struct mmc_card *card = host->card;
-
-	if (card && mmc_card_mmc(card) && card->ext_csd.rev >= 3)
-		return 1;
-	return 0;
-}
-EXPORT_SYMBOL(mmc_card_can_sleep);
-
 /*
  * Flush the cache to the non-volatile storage.
  */
@@ -2626,48 +2619,9 @@ EXPORT_SYMBOL(mmc_cache_ctrl);
  */
 int mmc_suspend_host(struct mmc_host *host)
 {
-	int err = 0;
-
-	cancel_delayed_work(&host->detect);
-	mmc_flush_scheduled_work();
-
-	mmc_bus_get(host);
-	if (host->bus_ops && !host->bus_dead) {
-		if (host->bus_ops->suspend) {
-			if (mmc_card_doing_bkops(host->card)) {
-				err = mmc_stop_bkops(host->card);
-				if (err)
-					goto out;
-			}
-			err = host->bus_ops->suspend(host);
-		}
-
-		if (err == -ENOSYS || !host->bus_ops->resume) {
-			/*
-			 * We simply "remove" the card in this case.
-			 * It will be redetected on resume.  (Calling
-			 * bus_ops->remove() with a claimed host can
-			 * deadlock.)
-			 */
-			if (host->bus_ops->remove)
-				host->bus_ops->remove(host);
-			mmc_claim_host(host);
-			mmc_detach_bus(host);
-			mmc_power_off(host);
-			mmc_release_host(host);
-			host->pm_flags = 0;
-			err = 0;
-		}
-	}
-	mmc_bus_put(host);
-
-	if (!err && !mmc_card_keep_power(host))
-		mmc_power_off(host);
-
-out:
-	return err;
+	/* This function is deprecated */
+	return 0;
 }
-
 EXPORT_SYMBOL(mmc_suspend_host);
 
 /**
@@ -2676,39 +2630,8 @@ EXPORT_SYMBOL(mmc_suspend_host);
  */
 int mmc_resume_host(struct mmc_host *host)
 {
-	int err = 0;
-
-	mmc_bus_get(host);
-	if (host->bus_ops && !host->bus_dead) {
-		if (!mmc_card_keep_power(host)) {
-			mmc_power_up(host);
-			mmc_select_voltage(host, host->ocr);
-			/*
-			 * Tell runtime PM core we just powered up the card,
-			 * since it still believes the card is powered off.
-			 * Note that currently runtime PM is only enabled
-			 * for SDIO cards that are MMC_CAP_POWER_OFF_CARD
-			 */
-			if (mmc_card_sdio(host->card) &&
-			    (host->caps & MMC_CAP_POWER_OFF_CARD)) {
-				pm_runtime_disable(&host->card->dev);
-				pm_runtime_set_active(&host->card->dev);
-				pm_runtime_enable(&host->card->dev);
-			}
-		}
-		BUG_ON(!host->bus_ops->resume);
-		err = host->bus_ops->resume(host);
-		if (err) {
-			pr_warning("%s: error %d during resume "
-					    "(card was removed?)\n",
-					    mmc_hostname(host), err);
-			err = 0;
-		}
-	}
-	host->pm_flags &= ~MMC_PM_KEEP_POWER;
-	mmc_bus_put(host);
-
-	return err;
+	/* This function is deprecated */
+	return 0;
 }
 EXPORT_SYMBOL(mmc_resume_host);
 
@@ -2727,29 +2650,22 @@ int mmc_pm_notify(struct notifier_block *notify_block,
 	switch (mode) {
 	case PM_HIBERNATION_PREPARE:
 	case PM_SUSPEND_PREPARE:
-		if (host->card && mmc_card_mmc(host->card) &&
-		    mmc_card_doing_bkops(host->card)) {
-			err = mmc_stop_bkops(host->card);
-			if (err) {
-				pr_err("%s: didn't stop bkops\n",
-					mmc_hostname(host));
-				return err;
-			}
-			mmc_card_clr_doing_bkops(host->card);
-		}
-
 		spin_lock_irqsave(&host->lock, flags);
 		host->rescan_disable = 1;
 		spin_unlock_irqrestore(&host->lock, flags);
 		cancel_delayed_work_sync(&host->detect);
 
-		if (!host->bus_ops || host->bus_ops->suspend)
+		if (!host->bus_ops)
 			break;
 
-		/* Calling bus_ops->remove() with a claimed host can deadlock */
-		if (host->bus_ops->remove)
-			host->bus_ops->remove(host);
+		/* Validate prerequisites for suspend */
+		if (host->bus_ops->pre_suspend)
+			err = host->bus_ops->pre_suspend(host);
+		if (!err && host->bus_ops->suspend)
+			break;
 
+		/* Calling bus_ops->remove() with a claimed host can deadlock */
+		host->bus_ops->remove(host);
 		mmc_claim_host(host);
 		mmc_detach_bus(host);
 		mmc_power_off(host);

drivers/mmc/core/core.h

@@ -16,15 +16,17 @@
 #define MMC_CMD_RETRIES        3
 
 struct mmc_bus_ops {
-	int (*awake)(struct mmc_host *);
-	int (*sleep)(struct mmc_host *);
 	void (*remove)(struct mmc_host *);
 	void (*detect)(struct mmc_host *);
+	int (*pre_suspend)(struct mmc_host *);
 	int (*suspend)(struct mmc_host *);
 	int (*resume)(struct mmc_host *);
+	int (*runtime_suspend)(struct mmc_host *);
+	int (*runtime_resume)(struct mmc_host *);
 	int (*power_save)(struct mmc_host *);
 	int (*power_restore)(struct mmc_host *);
 	int (*alive)(struct mmc_host *);
+	int (*shutdown)(struct mmc_host *);
 };
 
 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
@@ -44,6 +46,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
 int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
+void mmc_power_up(struct mmc_host *host);
 void mmc_power_off(struct mmc_host *host);
 void mmc_power_cycle(struct mmc_host *host);
 

drivers/mmc/core/debugfs.c

@@ -258,13 +258,13 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
 	u32		status;
 	int		ret;
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 
 	ret = mmc_send_status(data, &status);
 	if (!ret)
 		*val = status;
 
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 
 	return ret;
 }
@@ -291,9 +291,9 @@ static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
 		goto out_free;
 	}
 
-	mmc_claim_host(card->host);
+	mmc_get_card(card);
 	err = mmc_send_ext_csd(card, ext_csd);
-	mmc_release_host(card->host);
+	mmc_put_card(card);
 	if (err)
 		goto out_free;
 

drivers/mmc/core/host.c

@@ -306,7 +306,7 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host)
  * parse the properties and set respective generic mmc-host flags and
  * parameters.
  */
-void mmc_of_parse(struct mmc_host *host)
+int mmc_of_parse(struct mmc_host *host)
 {
 	struct device_node *np;
 	u32 bus_width;
@@ -315,7 +315,7 @@ void mmc_of_parse(struct mmc_host *host)
 	int len, ret, gpio;
 
 	if (!host->parent || !host->parent->of_node)
-		return;
+		return 0;
 
 	np = host->parent->of_node;
 
@@ -338,6 +338,7 @@ void mmc_of_parse(struct mmc_host *host)
 	default:
 		dev_err(host->parent,
 			"Invalid \"bus-width\" value %ud!\n", bus_width);
+		return -EINVAL;
 	}
 
 	/* f_max is obtained from the optional "max-frequency" property */
@@ -367,18 +368,22 @@ void mmc_of_parse(struct mmc_host *host)
 			host->caps |= MMC_CAP_NEEDS_POLL;
 
 		gpio = of_get_named_gpio_flags(np, "cd-gpios", 0, &flags);
+		if (gpio == -EPROBE_DEFER)
+			return gpio;
 		if (gpio_is_valid(gpio)) {
 			if (!(flags & OF_GPIO_ACTIVE_LOW))
 				gpio_inv_cd = true;
 
 			ret = mmc_gpio_request_cd(host, gpio);
-			if (ret < 0)
+			if (ret < 0) {
 				dev_err(host->parent,
 					"Failed to request CD GPIO #%d: %d!\n",
 					gpio, ret);
-			else
+				return ret;
+			} else {
 				dev_info(host->parent, "Got CD GPIO #%d.\n",
 					 gpio);
+			}
 		}
 
 		if (explicit_inv_cd ^ gpio_inv_cd)
@@ -389,14 +394,23 @@ void mmc_of_parse(struct mmc_host *host)
 	explicit_inv_wp = of_property_read_bool(np, "wp-inverted");
 
 	gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
+	if (gpio == -EPROBE_DEFER) {
+		ret = -EPROBE_DEFER;
+		goto out;
+	}
 	if (gpio_is_valid(gpio)) {
 		if (!(flags & OF_GPIO_ACTIVE_LOW))
 			gpio_inv_wp = true;
 
 		ret = mmc_gpio_request_ro(host, gpio);
-		if (ret < 0)
+		if (ret < 0) {
 			dev_err(host->parent,
 				"Failed to request WP GPIO: %d!\n", ret);
+			goto out;
+		} else {
+				dev_info(host->parent, "Got WP GPIO #%d.\n",
+					 gpio);
+		}
 	}
 	if (explicit_inv_wp ^ gpio_inv_wp)
 		host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
@@ -409,10 +423,18 @@ void mmc_of_parse(struct mmc_host *host)
 		host->caps |= MMC_CAP_POWER_OFF_CARD;
 	if (of_find_property(np, "cap-sdio-irq", &len))
 		host->caps |= MMC_CAP_SDIO_IRQ;
+	if (of_find_property(np, "full-pwr-cycle", &len))
+		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
 	if (of_find_property(np, "keep-power-in-suspend", &len))
 		host->pm_caps |= MMC_PM_KEEP_POWER;
 	if (of_find_property(np, "enable-sdio-wakeup", &len))
 		host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
+
+	return 0;
+
+out:
+	mmc_gpio_free_cd(host);
+	return ret;
 }
 
 EXPORT_SYMBOL(mmc_of_parse);

drivers/mmc/core/mmc.c

@@ -293,7 +293,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 	}
 
 	card->ext_csd.rev = ext_csd[EXT_CSD_REV];
-	if (card->ext_csd.rev > 6) {
+	if (card->ext_csd.rev > 7) {
 		pr_err("%s: unrecognised EXT_CSD revision %d\n",
 			mmc_hostname(card->host), card->ext_csd.rev);
 		err = -EINVAL;
@@ -461,9 +461,31 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		 */
 		card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP];
 		card->ext_csd.boot_ro_lockable = true;
+
+		/* Save power class values */
+		card->ext_csd.raw_pwr_cl_52_195 =
+			ext_csd[EXT_CSD_PWR_CL_52_195];
+		card->ext_csd.raw_pwr_cl_26_195 =
+			ext_csd[EXT_CSD_PWR_CL_26_195];
+		card->ext_csd.raw_pwr_cl_52_360 =
+			ext_csd[EXT_CSD_PWR_CL_52_360];
+		card->ext_csd.raw_pwr_cl_26_360 =
+			ext_csd[EXT_CSD_PWR_CL_26_360];
+		card->ext_csd.raw_pwr_cl_200_195 =
+			ext_csd[EXT_CSD_PWR_CL_200_195];
+		card->ext_csd.raw_pwr_cl_200_360 =
+			ext_csd[EXT_CSD_PWR_CL_200_360];
+		card->ext_csd.raw_pwr_cl_ddr_52_195 =
+			ext_csd[EXT_CSD_PWR_CL_DDR_52_195];
+		card->ext_csd.raw_pwr_cl_ddr_52_360 =
+			ext_csd[EXT_CSD_PWR_CL_DDR_52_360];
 	}
 
 	if (card->ext_csd.rev >= 5) {
+		/* Adjust production date as per JEDEC JESD84-B451 */
+		if (card->cid.year < 2010)
+			card->cid.year += 16;
+
 		/* check whether the eMMC card supports BKOPS */
 		if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
 			card->ext_csd.bkops = 1;
@@ -607,7 +629,23 @@ static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width)
 		(card->ext_csd.raw_sectors[2] ==
 			bw_ext_csd[EXT_CSD_SEC_CNT + 2]) &&
 		(card->ext_csd.raw_sectors[3] ==
-			bw_ext_csd[EXT_CSD_SEC_CNT + 3]));
+			bw_ext_csd[EXT_CSD_SEC_CNT + 3]) &&
+		(card->ext_csd.raw_pwr_cl_52_195 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_52_195]) &&
+		(card->ext_csd.raw_pwr_cl_26_195 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_26_195]) &&
+		(card->ext_csd.raw_pwr_cl_52_360 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_52_360]) &&
+		(card->ext_csd.raw_pwr_cl_26_360 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_26_360]) &&
+		(card->ext_csd.raw_pwr_cl_200_195 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_200_195]) &&
+		(card->ext_csd.raw_pwr_cl_200_360 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_200_360]) &&
+		(card->ext_csd.raw_pwr_cl_ddr_52_195 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) &&
+		(card->ext_csd.raw_pwr_cl_ddr_52_360 ==
+			bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]));
 	if (err)
 		err = -EINVAL;
 
@@ -676,11 +714,10 @@ static struct device_type mmc_type = {
  * mmc_switch command.
  */
 static int mmc_select_powerclass(struct mmc_card *card,
-		unsigned int bus_width, u8 *ext_csd)
+		unsigned int bus_width)
 {
 	int err = 0;
-	unsigned int pwrclass_val;
-	unsigned int index = 0;
+	unsigned int pwrclass_val = 0;
 	struct mmc_host *host;
 
 	BUG_ON(!card);
@@ -688,9 +725,6 @@ static int mmc_select_powerclass(struct mmc_card *card,
 	host = card->host;
 	BUG_ON(!host);
 
-	if (ext_csd == NULL)
-		return 0;
-
 	/* Power class selection is supported for versions >= 4.0 */
 	if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
 		return 0;
@@ -702,13 +736,13 @@ static int mmc_select_powerclass(struct mmc_card *card,
 	switch (1 << host->ios.vdd) {
 	case MMC_VDD_165_195:
 		if (host->ios.clock <= 26000000)
-			index = EXT_CSD_PWR_CL_26_195;
+			pwrclass_val = card->ext_csd.raw_pwr_cl_26_195;
 		else if	(host->ios.clock <= 52000000)
-			index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
-				EXT_CSD_PWR_CL_52_195 :
-				EXT_CSD_PWR_CL_DDR_52_195;
+			pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+				card->ext_csd.raw_pwr_cl_52_195 :
+				card->ext_csd.raw_pwr_cl_ddr_52_195;
 		else if (host->ios.clock <= 200000000)
-			index = EXT_CSD_PWR_CL_200_195;
+			pwrclass_val = card->ext_csd.raw_pwr_cl_200_195;
 		break;
 	case MMC_VDD_27_28:
 	case MMC_VDD_28_29:
@@ -720,13 +754,13 @@ static int mmc_select_powerclass(struct mmc_card *card,
 	case MMC_VDD_34_35:
 	case MMC_VDD_35_36:
 		if (host->ios.clock <= 26000000)
-			index = EXT_CSD_PWR_CL_26_360;
+			pwrclass_val = card->ext_csd.raw_pwr_cl_26_360;
 		else if	(host->ios.clock <= 52000000)
-			index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
-				EXT_CSD_PWR_CL_52_360 :
-				EXT_CSD_PWR_CL_DDR_52_360;
+			pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+				card->ext_csd.raw_pwr_cl_52_360 :
+				card->ext_csd.raw_pwr_cl_ddr_52_360;
 		else if (host->ios.clock <= 200000000)
-			index = EXT_CSD_PWR_CL_200_360;
+			pwrclass_val = card->ext_csd.raw_pwr_cl_200_360;
 		break;
 	default:
 		pr_warning("%s: Voltage range not supported "
@@ -734,8 +768,6 @@ static int mmc_select_powerclass(struct mmc_card *card,
 		return -EINVAL;
 	}
 
-	pwrclass_val = ext_csd[index];
-
 	if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8))
 		pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >>
 				EXT_CSD_PWR_CL_8BIT_SHIFT;
@@ -1013,11 +1045,9 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 	}
 
 	/*
-	 * If the host supports the power_off_notify capability then
-	 * set the notification byte in the ext_csd register of device
+	 * Enable power_off_notification byte in the ext_csd register
 	 */
-	if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) &&
-	    (card->ext_csd.rev >= 6)) {
+	if (card->ext_csd.rev >= 6) {
 		err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
 				 EXT_CSD_POWER_OFF_NOTIFICATION,
 				 EXT_CSD_POWER_ON,
@@ -1131,7 +1161,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 
 		ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
 				EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4;
-		err = mmc_select_powerclass(card, ext_csd_bits, ext_csd);
+		err = mmc_select_powerclass(card, ext_csd_bits);
 		if (err)
 			pr_warning("%s: power class selection to bus width %d"
 				   " failed\n", mmc_hostname(card->host),
@@ -1164,8 +1194,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			bus_width = bus_widths[idx];
 			if (bus_width == MMC_BUS_WIDTH_1)
 				ddr = 0; /* no DDR for 1-bit width */
-			err = mmc_select_powerclass(card, ext_csd_bits[idx][0],
-						    ext_csd);
+			err = mmc_select_powerclass(card, ext_csd_bits[idx][0]);
 			if (err)
 				pr_warning("%s: power class selection to "
 					   "bus width %d failed\n",
@@ -1195,8 +1224,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		}
 
 		if (!err && ddr) {
-			err = mmc_select_powerclass(card, ext_csd_bits[idx][1],
-						    ext_csd);
+			err = mmc_select_powerclass(card, ext_csd_bits[idx][1]);
 			if (err)
 				pr_warning("%s: power class selection to "
 					   "bus width %d ddr %d failed\n",
@@ -1321,6 +1349,45 @@ err:
 	return err;
 }
 
+static int mmc_can_sleep(struct mmc_card *card)
+{
+	return (card && card->ext_csd.rev >= 3);
+}
+
+static int mmc_sleep(struct mmc_host *host)
+{
+	struct mmc_command cmd = {0};
+	struct mmc_card *card = host->card;
+	int err;
+
+	if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD)
+		return 0;
+
+	err = mmc_deselect_cards(host);
+	if (err)
+		return err;
+
+	cmd.opcode = MMC_SLEEP_AWAKE;
+	cmd.arg = card->rca << 16;
+	cmd.arg |= 1 << 15;
+
+	cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
+	err = mmc_wait_for_cmd(host, &cmd, 0);
+	if (err)
+		return err;
+
+	/*
+	 * If the host does not wait while the card signals busy, then we will
+	 * will have to wait the sleep/awake timeout.  Note, we cannot use the
+	 * SEND_STATUS command to poll the status because that command (and most
+	 * others) is invalid while the card sleeps.
+	 */
+	if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
+		mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000));
+
+	return err;
+}
+
 static int mmc_can_poweroff_notify(const struct mmc_card *card)
 {
 	return card &&
@@ -1380,14 +1447,14 @@ static void mmc_detect(struct mmc_host *host)
 	BUG_ON(!host);
 	BUG_ON(!host->card);
 
-	mmc_claim_host(host);
+	mmc_get_card(host->card);
 
 	/*
 	 * Just check if our card has been removed.
 	 */
 	err = _mmc_detect_card_removed(host);
 
-	mmc_release_host(host);
+	mmc_put_card(host->card);
 
 	if (err) {
 		mmc_remove(host);
@@ -1399,35 +1466,59 @@ static void mmc_detect(struct mmc_host *host)
 	}
 }
 
-/*
- * Suspend callback from host.
- */
-static int mmc_suspend(struct mmc_host *host)
+static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
 {
 	int err = 0;
+	unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT :
+					EXT_CSD_POWER_OFF_LONG;
 
 	BUG_ON(!host);
 	BUG_ON(!host->card);
 
 	mmc_claim_host(host);
 
+	if (mmc_card_doing_bkops(host->card)) {
+		err = mmc_stop_bkops(host->card);
+		if (err)
+			goto out;
+	}
+
 	err = mmc_cache_ctrl(host, 0);
 	if (err)
 		goto out;
 
-	if (mmc_can_poweroff_notify(host->card))
-		err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT);
-	else if (mmc_card_can_sleep(host))
-		err = mmc_card_sleep(host);
+	if (mmc_can_poweroff_notify(host->card) &&
+		((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend))
+		err = mmc_poweroff_notify(host->card, notify_type);
+	else if (mmc_can_sleep(host->card))
+		err = mmc_sleep(host);
 	else if (!mmc_host_is_spi(host))
 		err = mmc_deselect_cards(host);
 	host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
 
+	if (!err)
+		mmc_power_off(host);
 out:
 	mmc_release_host(host);
 	return err;
 }
 
+/*
+ * Suspend callback from host.
+ */
+static int mmc_suspend(struct mmc_host *host)
+{
+	return _mmc_suspend(host, true);
+}
+
+/*
+ * Shutdown callback
+ */
+static int mmc_shutdown(struct mmc_host *host)
+{
+	return _mmc_suspend(host, false);
+}
+
 /*
  * Resume callback from host.
  *
@@ -1442,74 +1533,94 @@ static int mmc_resume(struct mmc_host *host)
 	BUG_ON(!host->card);
 
 	mmc_claim_host(host);
+	mmc_power_up(host);
+	mmc_select_voltage(host, host->ocr);
 	err = mmc_init_card(host, host->ocr, host->card);
 	mmc_release_host(host);
 
 	return err;
 }
 
-static int mmc_power_restore(struct mmc_host *host)
+
+/*
+ * Callback for runtime_suspend.
+ */
+static int mmc_runtime_suspend(struct mmc_host *host)
 {
-	int ret;
+	int err;
+
+	if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
+		return 0;
 
-	host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
 	mmc_claim_host(host);
-	ret = mmc_init_card(host, host->ocr, host->card);
-	mmc_release_host(host);
 
-	return ret;
+	err = mmc_suspend(host);
+	if (err) {
+		pr_err("%s: error %d doing aggessive suspend\n",
+			mmc_hostname(host), err);
+		goto out;
+	}
+	mmc_power_off(host);
+
+out:
+	mmc_release_host(host);
+	return err;
 }
 
-static int mmc_sleep(struct mmc_host *host)
+/*
+ * Callback for runtime_resume.
+ */
+static int mmc_runtime_resume(struct mmc_host *host)
 {
-	struct mmc_card *card = host->card;
-	int err = -ENOSYS;
+	int err;
 
-	if (card && card->ext_csd.rev >= 3) {
-		err = mmc_card_sleepawake(host, 1);
-		if (err < 0)
-			pr_debug("%s: Error %d while putting card into sleep",
-				 mmc_hostname(host), err);
-	}
+	if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
+		return 0;
 
-	return err;
+	mmc_claim_host(host);
+
+	mmc_power_up(host);
+	err = mmc_resume(host);
+	if (err)
+		pr_err("%s: error %d doing aggessive resume\n",
+			mmc_hostname(host), err);
+
+	mmc_release_host(host);
+	return 0;
 }
 
-static int mmc_awake(struct mmc_host *host)
+static int mmc_power_restore(struct mmc_host *host)
 {
-	struct mmc_card *card = host->card;
-	int err = -ENOSYS;
+	int ret;
 
-	if (card && card->ext_csd.rev >= 3) {
-		err = mmc_card_sleepawake(host, 0);
-		if (err < 0)
-			pr_debug("%s: Error %d while awaking sleeping card",
-				 mmc_hostname(host), err);
-	}
+	host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
+	mmc_claim_host(host);
+	ret = mmc_init_card(host, host->ocr, host->card);
+	mmc_release_host(host);
 
-	return err;
+	return ret;
 }
 
 static const struct mmc_bus_ops mmc_ops = {
-	.awake = mmc_awake,
-	.sleep = mmc_sleep,
 	.remove = mmc_remove,
 	.detect = mmc_detect,
 	.suspend = NULL,
 	.resume = NULL,
 	.power_restore = mmc_power_restore,
 	.alive = mmc_alive,
+	.shutdown = mmc_shutdown,
 };
 
 static const struct mmc_bus_ops mmc_ops_unsafe = {
-	.awake = mmc_awake,
-	.sleep = mmc_sleep,
 	.remove = mmc_remove,
 	.detect = mmc_detect,
 	.suspend = mmc_suspend,
 	.resume = mmc_resume,
+	.runtime_suspend = mmc_runtime_suspend,
+	.runtime_resume = mmc_runtime_resume,
 	.power_restore = mmc_power_restore,
 	.alive = mmc_alive,
+	.shutdown = mmc_shutdown,
 };
 
 static void mmc_attach_bus_ops(struct mmc_host *host)

drivers/mmc/core/mmc_ops.c

@@ -59,40 +59,6 @@ int mmc_deselect_cards(struct mmc_host *host)
 	return _mmc_select_card(host, NULL);
 }
 
-int mmc_card_sleepawake(struct mmc_host *host, int sleep)
-{
-	struct mmc_command cmd = {0};
-	struct mmc_card *card = host->card;
-	int err;
-
-	if (sleep)
-		mmc_deselect_cards(host);
-
-	cmd.opcode = MMC_SLEEP_AWAKE;
-	cmd.arg = card->rca << 16;
-	if (sleep)
-		cmd.arg |= 1 << 15;
-
-	cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
-	err = mmc_wait_for_cmd(host, &cmd, 0);
-	if (err)
-		return err;
-
-	/*
-	 * If the host does not wait while the card signals busy, then we will
-	 * will have to wait the sleep/awake timeout.  Note, we cannot use the
-	 * SEND_STATUS command to poll the status because that command (and most
-	 * others) is invalid while the card sleeps.
-	 */
-	if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
-		mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000));
-
-	if (!sleep)
-		err = mmc_select_card(card);
-
-	return err;
-}
-
 int mmc_go_idle(struct mmc_host *host)
 {
 	int err;
@@ -431,6 +397,8 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
 
 
 	cmd.cmd_timeout_ms = timeout_ms;
+	if (index == EXT_CSD_SANITIZE_START)
+		cmd.sanitize_busy = true;
 
 	err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
 	if (err)

drivers/mmc/core/mmc_ops.h

@@ -24,7 +24,6 @@ int mmc_send_status(struct mmc_card *card, u32 *status);
 int mmc_send_cid(struct mmc_host *host, u32 *cid);
 int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
 int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
-int mmc_card_sleepawake(struct mmc_host *host, int sleep);
 int mmc_bus_test(struct mmc_card *card, u8 bus_width);
 int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status);
 

drivers/mmc/core/sd.c

@@ -646,8 +646,13 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
 	if (err)
 		goto out;
 
-	/* SPI mode doesn't define CMD19 */
-	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) {
+	/*
+	 * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
+	 * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
+	 */
+	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
+			(card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
+			 card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) {
 		mmc_host_clk_hold(card->host);
 		err = card->host->ops->execute_tuning(card->host,
 						      MMC_SEND_TUNING_BLOCK);
@@ -1037,14 +1042,14 @@ static void mmc_sd_detect(struct mmc_host *host)
 	BUG_ON(!host);
 	BUG_ON(!host->card);
 
-	mmc_claim_host(host);
+	mmc_get_card(host->card);
 
 	/*
 	 * Just check if our card has been removed.
 	 */
 	err = _mmc_detect_card_removed(host);
 
-	mmc_release_host(host);
+	mmc_put_card(host->card);
 
 	if (err) {
 		mmc_sd_remove(host);
@@ -1070,6 +1075,8 @@ static int mmc_sd_suspend(struct mmc_host *host)
 	if (!mmc_host_is_spi(host))
 		err = mmc_deselect_cards(host);
 	host->card->state &= ~MMC_STATE_HIGHSPEED;
+	if (!err)
+		mmc_power_off(host);
 	mmc_release_host(host);
 
 	return err;
@@ -1089,12 +1096,61 @@ static int mmc_sd_resume(struct mmc_host *host)
 	BUG_ON(!host->card);
 
 	mmc_claim_host(host);
+	mmc_power_up(host);
+	mmc_select_voltage(host, host->ocr);
 	err = mmc_sd_init_card(host, host->ocr, host->card);
 	mmc_release_host(host);
 
 	return err;
 }
 
+/*
+ * Callback for runtime_suspend.
+ */
+static int mmc_sd_runtime_suspend(struct mmc_host *host)
+{
+	int err;
+
+	if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
+		return 0;
+
+	mmc_claim_host(host);
+
+	err = mmc_sd_suspend(host);
+	if (err) {
+		pr_err("%s: error %d doing aggessive suspend\n",
+			mmc_hostname(host), err);
+		goto out;
+	}
+	mmc_power_off(host);
+
+out:
+	mmc_release_host(host);
+	return err;
+}
+
+/*
+ * Callback for runtime_resume.
+ */
+static int mmc_sd_runtime_resume(struct mmc_host *host)
+{
+	int err;
+
+	if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
+		return 0;
+
+	mmc_claim_host(host);
+
+	mmc_power_up(host);
+	err = mmc_sd_resume(host);
+	if (err)
+		pr_err("%s: error %d doing aggessive resume\n",
+			mmc_hostname(host), err);
+
+	mmc_release_host(host);
+	return 0;
+}
+
 static int mmc_sd_power_restore(struct mmc_host *host)
 {
 	int ret;
@@ -1114,15 +1170,19 @@ static const struct mmc_bus_ops mmc_sd_ops = {
 	.resume = NULL,
 	.power_restore = mmc_sd_power_restore,
 	.alive = mmc_sd_alive,
+	.shutdown = mmc_sd_suspend,
 };
 
 static const struct mmc_bus_ops mmc_sd_ops_unsafe = {
 	.remove = mmc_sd_remove,
 	.detect = mmc_sd_detect,
+	.runtime_suspend = mmc_sd_runtime_suspend,
+	.runtime_resume = mmc_sd_runtime_resume,
 	.suspend = mmc_sd_suspend,
 	.resume = mmc_sd_resume,
 	.power_restore = mmc_sd_power_restore,
 	.alive = mmc_sd_alive,
+	.shutdown = mmc_sd_suspend,
 };
 
 static void mmc_sd_attach_bus_ops(struct mmc_host *host)

drivers/mmc/core/sdio.c

@@ -563,10 +563,18 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card)
 	if (err)
 		goto out;
 
-	/* Initialize and start re-tuning timer */
-	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning)
+	/*
+	 * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
+	 * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
+	 */
+	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
+			((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
+			 (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104))) {
+		mmc_host_clk_hold(card->host);
 		err = card->host->ops->execute_tuning(card->host,
 						      MMC_SEND_TUNING_BLOCK);
+		mmc_host_clk_release(card->host);
+	}
 
 out:
 
@@ -902,11 +910,11 @@ out:
 }
 
 /*
- * SDIO suspend.  We need to suspend all functions separately.
+ * SDIO pre_suspend.  We need to suspend all functions separately.
  * Therefore all registered functions must have drivers with suspend
  * and resume methods.  Failing that we simply remove the whole card.
  */
-static int mmc_sdio_suspend(struct mmc_host *host)
+static int mmc_sdio_pre_suspend(struct mmc_host *host)
 {
 	int i, err = 0;
 
@@ -917,8 +925,26 @@ static int mmc_sdio_suspend(struct mmc_host *host)
 			if (!pmops || !pmops->suspend || !pmops->resume) {
 				/* force removal of entire card in that case */
 				err = -ENOSYS;
-			} else
-				err = pmops->suspend(&func->dev);
+				break;
+			}
+		}
+	}
+
+	return err;
+}
+
+/*
+ * SDIO suspend.  Suspend all functions separately.
+ */
+static int mmc_sdio_suspend(struct mmc_host *host)
+{
+	int i, err = 0;
+
+	for (i = 0; i < host->card->sdio_funcs; i++) {
+		struct sdio_func *func = host->card->sdio_func[i];
+		if (func && sdio_func_present(func) && func->dev.driver) {
+			const struct dev_pm_ops *pmops = func->dev.driver->pm;
+			err = pmops->suspend(&func->dev);
 			if (err)
 				break;
 		}
@@ -937,6 +963,9 @@ static int mmc_sdio_suspend(struct mmc_host *host)
 		mmc_release_host(host);
 	}
 
+	if (!err && !mmc_card_keep_power(host))
+		mmc_power_off(host);
+
 	return err;
 }
 
@@ -950,6 +979,23 @@ static int mmc_sdio_resume(struct mmc_host *host)
 	/* Basic card reinitialization. */
 	mmc_claim_host(host);
 
+	/* Restore power if needed */
+	if (!mmc_card_keep_power(host)) {
+		mmc_power_up(host);
+		mmc_select_voltage(host, host->ocr);
+		/*
+		 * Tell runtime PM core we just powered up the card,
+		 * since it still believes the card is powered off.
+		 * Note that currently runtime PM is only enabled
+		 * for SDIO cards that are MMC_CAP_POWER_OFF_CARD
+		 */
+		if (host->caps & MMC_CAP_POWER_OFF_CARD) {
+			pm_runtime_disable(&host->card->dev);
+			pm_runtime_set_active(&host->card->dev);
+			pm_runtime_enable(&host->card->dev);
+		}
+	}
+
 	/* No need to reinitialize powered-resumed nonremovable cards */
 	if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) {
 		sdio_reset(host);
@@ -987,6 +1033,7 @@ static int mmc_sdio_resume(struct mmc_host *host)
 		}
 	}
 
+	host->pm_flags &= ~MMC_PM_KEEP_POWER;
 	return err;
 }
 
@@ -1051,11 +1098,28 @@ out:
 	return ret;
 }
 
+static int mmc_sdio_runtime_suspend(struct mmc_host *host)
+{
+	/* No references to the card, cut the power to it. */
+	mmc_power_off(host);
+	return 0;
+}
+
+static int mmc_sdio_runtime_resume(struct mmc_host *host)
+{
+	/* Restore power and re-initialize. */
+	mmc_power_up(host);
+	return mmc_sdio_power_restore(host);
+}
+
 static const struct mmc_bus_ops mmc_sdio_ops = {
 	.remove = mmc_sdio_remove,
 	.detect = mmc_sdio_detect,
+	.pre_suspend = mmc_sdio_pre_suspend,
 	.suspend = mmc_sdio_suspend,
 	.resume = mmc_sdio_resume,
+	.runtime_suspend = mmc_sdio_runtime_suspend,
+	.runtime_resume = mmc_sdio_runtime_resume,
 	.power_restore = mmc_sdio_power_restore,
 	.alive = mmc_sdio_alive,
 };

drivers/mmc/host/Kconfig

@@ -249,6 +249,17 @@ config MMC_SDHCI_S3C_DMA
 
 	  YMMV.
 
+config MMC_SDHCI_BCM_KONA
+	tristate "SDHCI support on Broadcom KONA platform"
+	depends on ARCH_BCM
+	select MMC_SDHCI_PLTFM
+	help
+	  This selects the Broadcom Kona Secure Digital Host Controller
+	  Interface(SDHCI) support.
+	  This is used in Broadcom mobile SoCs.
+
+	  If you have a controller with this interface, say Y or M here.
+
 config MMC_SDHCI_BCM2835
 	tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
 	depends on ARCH_BCM2835
@@ -556,6 +567,14 @@ config MMC_DW_EXYNOS
 	  Synopsys DesignWare Memory Card Interface driver. Select this option
 	  for platforms based on Exynos4 and Exynos5 SoC's.
 
+config MMC_DW_SOCFPGA
+	tristate "SOCFPGA specific extensions for Synopsys DW Memory Card Interface"
+	depends on MMC_DW
+	select MMC_DW_PLTFM
+	help
+	  This selects support for Altera SoCFPGA specific extensions to the
+	  Synopsys DesignWare Memory Card Interface driver.
+
 config MMC_DW_PCI
 	tristate "Synopsys Designware MCI support on PCI bus"
 	depends on MMC_DW && PCI

drivers/mmc/host/Makefile

@@ -42,6 +42,7 @@ obj-$(CONFIG_SDH_BFIN)		+= bfin_sdh.o
 obj-$(CONFIG_MMC_DW)		+= dw_mmc.o
 obj-$(CONFIG_MMC_DW_PLTFM)	+= dw_mmc-pltfm.o
 obj-$(CONFIG_MMC_DW_EXYNOS)	+= dw_mmc-exynos.o
+obj-$(CONFIG_MMC_DW_SOCFPGA)	+= dw_mmc-socfpga.o
 obj-$(CONFIG_MMC_DW_PCI)	+= dw_mmc-pci.o
 obj-$(CONFIG_MMC_SH_MMCIF)	+= sh_mmcif.o
 obj-$(CONFIG_MMC_JZ4740)	+= jz4740_mmc.o
@@ -60,6 +61,7 @@ obj-$(CONFIG_MMC_SDHCI_DOVE)		+= sdhci-dove.o
 obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= sdhci-tegra.o
 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
 
 ifeq ($(CONFIG_CB710_DEBUG),y)

drivers/mmc/host/android-goldfish.c

@@ -546,8 +546,6 @@ static int goldfish_mmc_remove(struct platform_device *pdev)
 {
 	struct goldfish_mmc_host *host = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	BUG_ON(host == NULL);
 
 	mmc_remove_host(host->mmc);

drivers/mmc/host/atmel-mci.c

@@ -40,8 +40,6 @@
 #include <asm/io.h>
 #include <asm/unaligned.h>
 
-#include <mach/cpu.h>
-
 #include "atmel-mci-regs.h"
 
 #define ATMCI_DATA_ERROR_FLAGS	(ATMCI_DCRCE | ATMCI_DTOE | ATMCI_OVRE | ATMCI_UNRE)
@@ -2475,8 +2473,6 @@ static int __exit atmci_remove(struct platform_device *pdev)
 	struct atmel_mci	*host = platform_get_drvdata(pdev);
 	unsigned int		i;
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (host->buffer)
 		dma_free_coherent(&pdev->dev, host->buf_size,
 		                  host->buffer, host->buf_phys_addr);
@@ -2504,7 +2500,7 @@ static int __exit atmci_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int atmci_suspend(struct device *dev)
 {
 	struct atmel_mci *host = dev_get_drvdata(dev);
@@ -2559,17 +2555,15 @@ static int atmci_resume(struct device *dev)
 
 	return ret;
 }
-static SIMPLE_DEV_PM_OPS(atmci_pm, atmci_suspend, atmci_resume);
-#define ATMCI_PM_OPS	(&atmci_pm)
-#else
-#define ATMCI_PM_OPS	NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(atmci_pm, atmci_suspend, atmci_resume);
+
 static struct platform_driver atmci_driver = {
 	.remove		= __exit_p(atmci_remove),
 	.driver		= {
 		.name		= "atmel_mci",
-		.pm		= ATMCI_PM_OPS,
+		.pm		= &atmci_pm,
 		.of_match_table	= of_match_ptr(atmci_dt_ids),
 	},
 };

drivers/mmc/host/au1xmmc.c

@@ -1149,7 +1149,6 @@ static int au1xmmc_remove(struct platform_device *pdev)
 		kfree(host->ioarea);
 
 		mmc_free_host(host->mmc);
-		platform_set_drvdata(pdev, NULL);
 	}
 	return 0;
 }

drivers/mmc/host/bfin_sdh.c

@@ -621,8 +621,6 @@ static int sdh_remove(struct platform_device *pdev)
 {
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct sdh_host *host = mmc_priv(mmc);
 

drivers/mmc/host/cb710-mmc.c

@@ -703,7 +703,7 @@ static int cb710_mmc_init(struct platform_device *pdev)
 	if (!mmc)
 		return -ENOMEM;
 
-	dev_set_drvdata(&pdev->dev, mmc);
+	platform_set_drvdata(pdev, mmc);
 
 	/* harmless (maybe) magic */
 	pci_read_config_dword(chip->pdev, 0x48, &val);

drivers/mmc/host/cb710-mmc.h

@@ -24,7 +24,7 @@ struct cb710_mmc_reader {
 
 static inline struct mmc_host *cb710_slot_to_mmc(struct cb710_slot *slot)
 {
-	return dev_get_drvdata(&slot->pdev.dev);
+	return platform_get_drvdata(&slot->pdev);
 }
 
 static inline struct cb710_slot *cb710_mmc_to_slot(struct mmc_host *mmc)

drivers/mmc/host/davinci_mmc.c

@@ -1407,7 +1407,6 @@ static int __exit davinci_mmcsd_remove(struct platform_device *pdev)
 {
 	struct mmc_davinci_host *host = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
 	if (host) {
 		mmc_davinci_cpufreq_deregister(host);
 

drivers/mmc/host/dw_mmc-exynos.c

@@ -31,8 +31,6 @@
 					SDMMC_CLKSEL_CCLK_DRIVE(y) |	\
 					SDMMC_CLKSEL_CCLK_DIVIDER(z))
 
-#define SDMMC_CMD_USE_HOLD_REG		BIT(29)
-
 #define EXYNOS4210_FIXED_CIU_CLK_DIV	2
 #define EXYNOS4412_FIXED_CIU_CLK_DIV	4
 

drivers/mmc/host/dw_mmc-pci.c

@@ -21,7 +21,6 @@
 #include "dw_mmc.h"
 
 #define PCI_BAR_NO 2
-#define COMPLETE_BAR 0
 #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
 #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
 /* Defining the Capabilities */
@@ -38,51 +37,37 @@ static struct dw_mci_board pci_board_data = {
 };
 
 static int dw_mci_pci_probe(struct pci_dev *pdev,
-				  const struct pci_device_id *entries)
+			    const struct pci_device_id *entries)
 {
 	struct dw_mci *host;
 	int ret;
 
-	ret = pci_enable_device(pdev);
+	ret = pcim_enable_device(pdev);
 	if (ret)
 		return ret;
-	if (pci_request_regions(pdev, "dw_mmc_pci")) {
-		ret = -ENODEV;
-		goto err_disable_dev;
-	}
 
-	host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
-	if (!host) {
-		ret = -ENOMEM;
-		goto err_release;
-	}
+	host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
+	if (!host)
+		return -ENOMEM;
 
 	host->irq = pdev->irq;
 	host->irq_flags = IRQF_SHARED;
 	host->dev = &pdev->dev;
 	host->pdata = &pci_board_data;
 
-	host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
-	if (!host->regs) {
-		ret = -EIO;
-		goto err_unmap;
-	}
+	ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
+	if (ret)
+		return ret;
+
+	host->regs = pcim_iomap_table(pdev)[0];
 
-	pci_set_drvdata(pdev, host);
 	ret = dw_mci_probe(host);
 	if (ret)
-		goto err_probe_failed;
-	return ret;
-
-err_probe_failed:
-	pci_iounmap(pdev, host->regs);
-err_unmap:
-	kfree(host);
-err_release:
-	pci_release_regions(pdev);
-err_disable_dev:
-	pci_disable_device(pdev);
-	return ret;
+		return ret;
+
+	pci_set_drvdata(pdev, host);
+
+	return 0;
 }
 
 static void dw_mci_pci_remove(struct pci_dev *pdev)
@@ -90,32 +75,23 @@ static void dw_mci_pci_remove(struct pci_dev *pdev)
 	struct dw_mci *host = pci_get_drvdata(pdev);
 
 	dw_mci_remove(host);
-	pci_set_drvdata(pdev, NULL);
-	pci_release_regions(pdev);
-	pci_iounmap(pdev, host->regs);
-	kfree(host);
-	pci_disable_device(pdev);
 }
 
 #ifdef CONFIG_PM_SLEEP
 static int dw_mci_pci_suspend(struct device *dev)
 {
-	int ret;
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct dw_mci *host = pci_get_drvdata(pdev);
 
-	ret = dw_mci_suspend(host);
-	return ret;
+	return dw_mci_suspend(host);
 }
 
 static int dw_mci_pci_resume(struct device *dev)
 {
-	int ret;
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct dw_mci *host = pci_get_drvdata(pdev);
 
-	ret = dw_mci_resume(host);
-	return ret;
+	return dw_mci_resume(host);
 }
 #else
 #define dw_mci_pci_suspend	NULL

drivers/mmc/host/dw_mmc-pltfm.c

@@ -24,8 +24,17 @@
 
 #include "dw_mmc.h"
 
+static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr)
+{
+	*cmdr |= SDMMC_CMD_USE_HOLD_REG;
+}
+
+static const struct dw_mci_drv_data rockchip_drv_data = {
+	.prepare_command	= dw_mci_rockchip_prepare_command,
+};
+
 int dw_mci_pltfm_register(struct platform_device *pdev,
-				const struct dw_mci_drv_data *drv_data)
+			  const struct dw_mci_drv_data *drv_data)
 {
 	struct dw_mci *host;
 	struct resource	*regs;
@@ -35,10 +44,6 @@ int dw_mci_pltfm_register(struct platform_device *pdev,
 	if (!host)
 		return -ENOMEM;
 
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!regs)
-		return -ENXIO;
-
 	host->irq = platform_get_irq(pdev, 0);
 	if (host->irq < 0)
 		return host->irq;
@@ -47,6 +52,8 @@ int dw_mci_pltfm_register(struct platform_device *pdev,
 	host->dev = &pdev->dev;
 	host->irq_flags = 0;
 	host->pdata = pdev->dev.platform_data;
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	host->regs = devm_ioremap_resource(&pdev->dev, regs);
 	if (IS_ERR(host->regs))
 		return PTR_ERR(host->regs);
@@ -58,52 +65,26 @@ int dw_mci_pltfm_register(struct platform_device *pdev,
 	}
 
 	platform_set_drvdata(pdev, host);
-	ret = dw_mci_probe(host);
-	return ret;
+	return dw_mci_probe(host);
 }
 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
 
-static int dw_mci_pltfm_probe(struct platform_device *pdev)
-{
-	return dw_mci_pltfm_register(pdev, NULL);
-}
-
-static int dw_mci_pltfm_remove(struct platform_device *pdev)
-{
-	struct dw_mci *host = platform_get_drvdata(pdev);
-
-	platform_set_drvdata(pdev, NULL);
-	dw_mci_remove(host);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
-
 #ifdef CONFIG_PM_SLEEP
 /*
  * TODO: we should probably disable the clock to the card in the suspend path.
  */
 static int dw_mci_pltfm_suspend(struct device *dev)
 {
-	int ret;
 	struct dw_mci *host = dev_get_drvdata(dev);
 
-	ret = dw_mci_suspend(host);
-	if (ret)
-		return ret;
-
-	return 0;
+	return dw_mci_suspend(host);
 }
 
 static int dw_mci_pltfm_resume(struct device *dev)
 {
-	int ret;
 	struct dw_mci *host = dev_get_drvdata(dev);
 
-	ret = dw_mci_resume(host);
-	if (ret)
-		return ret;
-
-	return 0;
+	return dw_mci_resume(host);
 }
 #else
 #define dw_mci_pltfm_suspend	NULL
@@ -115,10 +96,34 @@ EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
 
 static const struct of_device_id dw_mci_pltfm_match[] = {
 	{ .compatible = "snps,dw-mshc", },
+	{ .compatible = "rockchip,rk2928-dw-mshc",
+		.data = &rockchip_drv_data },
 	{},
 };
 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
 
+static int dw_mci_pltfm_probe(struct platform_device *pdev)
+{
+	const struct dw_mci_drv_data *drv_data = NULL;
+	const struct of_device_id *match;
+
+	if (pdev->dev.of_node) {
+		match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
+		drv_data = match->data;
+	}
+
+	return dw_mci_pltfm_register(pdev, drv_data);
+}
+
+int dw_mci_pltfm_remove(struct platform_device *pdev)
+{
+	struct dw_mci *host = platform_get_drvdata(pdev);
+
+	dw_mci_remove(host);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
+
 static struct platform_driver dw_mci_pltfm_driver = {
 	.probe		= dw_mci_pltfm_probe,
 	.remove		= dw_mci_pltfm_remove,

drivers/mmc/host/dw_mmc-socfpga.c

@@ -0,0 +1,140 @@
+/*
+ * Altera SoCFPGA Specific Extensions for Synopsys DW Multimedia Card Interface
+ * driver
+ *
+ *  Copyright (C) 2012, Samsung Electronics Co., Ltd.
+ *  Copyright (C) 2013 Altera 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Taken from dw_mmc-exynos.c
+ */
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/dw_mmc.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include "dw_mmc.h"
+#include "dw_mmc-pltfm.h"
+
+#define SYSMGR_SDMMCGRP_CTRL_OFFSET		0x108
+#define DRV_CLK_PHASE_SHIFT_SEL_MASK	0x7
+#define SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel)          \
+	((((smplsel) & 0x7) << 3) | (((drvsel) & 0x7) << 0))
+
+/* SOCFPGA implementation specific driver private data */
+struct dw_mci_socfpga_priv_data {
+	u8	ciu_div; /* card interface unit divisor */
+	u32	hs_timing; /* bitmask for CIU clock phase shift */
+	struct regmap   *sysreg; /* regmap for system manager register */
+};
+
+static int dw_mci_socfpga_priv_init(struct dw_mci *host)
+{
+	struct dw_mci_socfpga_priv_data *priv;
+
+	priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		dev_err(host->dev, "mem alloc failed for private data\n");
+		return -ENOMEM;
+	}
+
+	priv->sysreg = syscon_regmap_lookup_by_compatible("altr,sys-mgr");
+	if (IS_ERR(priv->sysreg)) {
+		dev_err(host->dev, "regmap for altr,sys-mgr lookup failed.\n");
+		return PTR_ERR(priv->sysreg);
+	}
+	host->priv = priv;
+
+	return 0;
+}
+
+static int dw_mci_socfpga_setup_clock(struct dw_mci *host)
+{
+	struct dw_mci_socfpga_priv_data *priv = host->priv;
+
+	clk_disable_unprepare(host->ciu_clk);
+	regmap_write(priv->sysreg, SYSMGR_SDMMCGRP_CTRL_OFFSET,
+		priv->hs_timing);
+	clk_prepare_enable(host->ciu_clk);
+
+	host->bus_hz /= (priv->ciu_div + 1);
+	return 0;
+}
+
+static void dw_mci_socfpga_prepare_command(struct dw_mci *host, u32 *cmdr)
+{
+	struct dw_mci_socfpga_priv_data *priv = host->priv;
+
+	if (priv->hs_timing & DRV_CLK_PHASE_SHIFT_SEL_MASK)
+		*cmdr |= SDMMC_CMD_USE_HOLD_REG;
+}
+
+static int dw_mci_socfpga_parse_dt(struct dw_mci *host)
+{
+	struct dw_mci_socfpga_priv_data *priv = host->priv;
+	struct device_node *np = host->dev->of_node;
+	u32 timing[2];
+	u32 div = 0;
+	int ret;
+
+	ret = of_property_read_u32(np, "altr,dw-mshc-ciu-div", &div);
+	if (ret)
+		dev_info(host->dev, "No dw-mshc-ciu-div specified, assuming 1");
+	priv->ciu_div = div;
+
+	ret = of_property_read_u32_array(np,
+			"altr,dw-mshc-sdr-timing", timing, 2);
+	if (ret)
+		return ret;
+
+	priv->hs_timing = SYSMGR_SDMMC_CTRL_SET(timing[0], timing[1]);
+	return 0;
+}
+
+static const struct dw_mci_drv_data socfpga_drv_data = {
+	.init			= dw_mci_socfpga_priv_init,
+	.setup_clock		= dw_mci_socfpga_setup_clock,
+	.prepare_command	= dw_mci_socfpga_prepare_command,
+	.parse_dt		= dw_mci_socfpga_parse_dt,
+};
+
+static const struct of_device_id dw_mci_socfpga_match[] = {
+	{ .compatible = "altr,socfpga-dw-mshc",
+			.data = &socfpga_drv_data, },
+	{},
+};
+MODULE_DEVICE_TABLE(of, dw_mci_socfpga_match);
+
+int dw_mci_socfpga_probe(struct platform_device *pdev)
+{
+	const struct dw_mci_drv_data *drv_data;
+	const struct of_device_id *match;
+
+	match = of_match_node(dw_mci_socfpga_match, pdev->dev.of_node);
+	drv_data = match->data;
+	return dw_mci_pltfm_register(pdev, drv_data);
+}
+
+static struct platform_driver dw_mci_socfpga_pltfm_driver = {
+	.probe		= dw_mci_socfpga_probe,
+	.remove		= __exit_p(dw_mci_pltfm_remove),
+	.driver		= {
+		.name		= "dwmmc_socfpga",
+		.of_match_table	= of_match_ptr(dw_mci_socfpga_match),
+		.pm		= &dw_mci_pltfm_pmops,
+	},
+};
+
+module_platform_driver(dw_mci_socfpga_pltfm_driver);
+
+MODULE_DESCRIPTION("Altera SOCFPGA Specific DW-MSHC Driver Extension");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:dwmmc-socfpga");

drivers/mmc/host/dw_mmc.c

@@ -39,7 +39,7 @@
 #include "dw_mmc.h"
 
 /* Common flag combinations */
-#define DW_MCI_DATA_ERROR_FLAGS	(SDMMC_INT_DTO | SDMMC_INT_DCRC | \
+#define DW_MCI_DATA_ERROR_FLAGS	(SDMMC_INT_DRTO | SDMMC_INT_DCRC | \
 				 SDMMC_INT_HTO | SDMMC_INT_SBE  | \
 				 SDMMC_INT_EBE)
 #define DW_MCI_CMD_ERROR_FLAGS	(SDMMC_INT_RTO | SDMMC_INT_RCRC | \
@@ -51,6 +51,11 @@
 #define DW_MCI_DMA_THRESHOLD	16
 
 #ifdef CONFIG_MMC_DW_IDMAC
+#define IDMAC_INT_CLR		(SDMMC_IDMAC_INT_AI | SDMMC_IDMAC_INT_NI | \
+				 SDMMC_IDMAC_INT_CES | SDMMC_IDMAC_INT_DU | \
+				 SDMMC_IDMAC_INT_FBE | SDMMC_IDMAC_INT_RI | \
+				 SDMMC_IDMAC_INT_TI)
+
 struct idmac_desc {
 	u32		des0;	/* Control Descriptor */
 #define IDMAC_DES0_DIC	BIT(1)
@@ -433,6 +438,7 @@ static int dw_mci_idmac_init(struct dw_mci *host)
 	mci_writel(host, BMOD, SDMMC_IDMAC_SWRESET);
 
 	/* Mask out interrupts - get Tx & Rx complete only */
+	mci_writel(host, IDSTS, IDMAC_INT_CLR);
 	mci_writel(host, IDINTEN, SDMMC_IDMAC_INT_NI | SDMMC_IDMAC_INT_RI |
 		   SDMMC_IDMAC_INT_TI);
 
@@ -1087,7 +1093,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
 			status = host->data_status;
 
 			if (status & DW_MCI_DATA_ERROR_FLAGS) {
-				if (status & SDMMC_INT_DTO) {
+				if (status & SDMMC_INT_DRTO) {
 					data->error = -ETIMEDOUT;
 				} else if (status & SDMMC_INT_DCRC) {
 					data->error = -EILSEQ;
@@ -1985,19 +1991,6 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 #endif /* CONFIG_MMC_DW_IDMAC */
 	}
 
-	host->vmmc = devm_regulator_get(mmc_dev(mmc), "vmmc");
-	if (IS_ERR(host->vmmc)) {
-		pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
-		host->vmmc = NULL;
-	} else {
-		ret = regulator_enable(host->vmmc);
-		if (ret) {
-			dev_err(host->dev,
-				"failed to enable regulator: %d\n", ret);
-			goto err_setup_bus;
-		}
-	}
-
 	if (dw_mci_get_cd(mmc))
 		set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
 	else
@@ -2124,6 +2117,7 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
 	struct device_node *np = dev->of_node;
 	const struct dw_mci_drv_data *drv_data = host->drv_data;
 	int idx, ret;
+	u32 clock_frequency;
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata) {
@@ -2150,6 +2144,9 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
 
 	of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms);
 
+	if (!of_property_read_u32(np, "clock-frequency", &clock_frequency))
+		pdata->bus_hz = clock_frequency;
+
 	if (drv_data && drv_data->parse_dt) {
 		ret = drv_data->parse_dt(host);
 		if (ret)
@@ -2207,18 +2204,23 @@ int dw_mci_probe(struct dw_mci *host)
 	host->ciu_clk = devm_clk_get(host->dev, "ciu");
 	if (IS_ERR(host->ciu_clk)) {
 		dev_dbg(host->dev, "ciu clock not available\n");
+		host->bus_hz = host->pdata->bus_hz;
 	} else {
 		ret = clk_prepare_enable(host->ciu_clk);
 		if (ret) {
 			dev_err(host->dev, "failed to enable ciu clock\n");
 			goto err_clk_biu;
 		}
-	}
 
-	if (IS_ERR(host->ciu_clk))
-		host->bus_hz = host->pdata->bus_hz;
-	else
+		if (host->pdata->bus_hz) {
+			ret = clk_set_rate(host->ciu_clk, host->pdata->bus_hz);
+			if (ret)
+				dev_warn(host->dev,
+					 "Unable to set bus rate to %ul\n",
+					 host->pdata->bus_hz);
+		}
 		host->bus_hz = clk_get_rate(host->ciu_clk);
+	}
 
 	if (drv_data && drv_data->setup_clock) {
 		ret = drv_data->setup_clock(host);
@@ -2229,11 +2231,29 @@ int dw_mci_probe(struct dw_mci *host)
 		}
 	}
 
+	host->vmmc = devm_regulator_get(host->dev, "vmmc");
+	if (IS_ERR(host->vmmc)) {
+		ret = PTR_ERR(host->vmmc);
+		if (ret == -EPROBE_DEFER)
+			goto err_clk_ciu;
+
+		dev_info(host->dev, "no vmmc regulator found: %d\n", ret);
+		host->vmmc = NULL;
+	} else {
+		ret = regulator_enable(host->vmmc);
+		if (ret) {
+			if (ret != -EPROBE_DEFER)
+				dev_err(host->dev,
+					"regulator_enable fail: %d\n", ret);
+			goto err_clk_ciu;
+		}
+	}
+
 	if (!host->bus_hz) {
 		dev_err(host->dev,
 			"Platform data must supply bus speed\n");
 		ret = -ENODEV;
-		goto err_clk_ciu;
+		goto err_regulator;
 	}
 
 	host->quirks = host->pdata->quirks;
@@ -2321,8 +2341,10 @@ int dw_mci_probe(struct dw_mci *host)
 	tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
 	host->card_workqueue = alloc_workqueue("dw-mci-card",
 			WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
-	if (!host->card_workqueue)
+	if (!host->card_workqueue) {
+		ret = -ENOMEM;
 		goto err_dmaunmap;
+	}
 	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
 	ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt,
 			       host->irq_flags, "dw-mci", host);
@@ -2378,6 +2400,7 @@ err_dmaunmap:
 	if (host->use_dma && host->dma_ops->exit)
 		host->dma_ops->exit(host);
 
+err_regulator:
 	if (host->vmmc)
 		regulator_disable(host->vmmc);
 

drivers/mmc/host/dw_mmc.h

@@ -98,7 +98,7 @@
 #define SDMMC_INT_HLE			BIT(12)
 #define SDMMC_INT_FRUN			BIT(11)
 #define SDMMC_INT_HTO			BIT(10)
-#define SDMMC_INT_DTO			BIT(9)
+#define SDMMC_INT_DRTO			BIT(9)
 #define SDMMC_INT_RTO			BIT(8)
 #define SDMMC_INT_DCRC			BIT(7)
 #define SDMMC_INT_RCRC			BIT(6)
@@ -111,6 +111,7 @@
 #define SDMMC_INT_ERROR			0xbfc2
 /* Command register defines */
 #define SDMMC_CMD_START			BIT(31)
+#define SDMMC_CMD_USE_HOLD_REG	BIT(29)
 #define SDMMC_CMD_CCS_EXP		BIT(23)
 #define SDMMC_CMD_CEATA_RD		BIT(22)
 #define SDMMC_CMD_UPD_CLK		BIT(21)

drivers/mmc/host/jz4740_mmc.c

@@ -14,6 +14,7 @@
  */
 
 #include <linux/mmc/host.h>
+#include <linux/mmc/slot-gpio.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/irq.h>
@@ -120,7 +121,6 @@ struct jz4740_mmc_host {
 	int irq;
 	int card_detect_irq;
 
-	struct resource *mem;
 	void __iomem *base;
 	struct mmc_request *req;
 	struct mmc_command *cmd;
@@ -231,6 +231,14 @@ static void jz4740_mmc_transfer_check_state(struct jz4740_mmc_host *host,
 			host->req->cmd->error = -EIO;
 			data->error = -EIO;
 		}
+	} else if (status & JZ_MMC_STATUS_READ_ERROR_MASK) {
+		if (status & (JZ_MMC_STATUS_TIMEOUT_READ)) {
+			host->req->cmd->error = -ETIMEDOUT;
+			data->error = -ETIMEDOUT;
+		} else {
+			host->req->cmd->error = -EIO;
+			data->error = -EIO;
+		}
 	}
 }
 
@@ -560,11 +568,6 @@ static irqreturn_t jz_mmc_irq(int irq, void *devid)
 					if (cmd->data)
 							cmd->data->error = -EIO;
 					cmd->error = -EIO;
-			} else if (status & (JZ_MMC_STATUS_CRC_READ_ERROR |
-					JZ_MMC_STATUS_CRC_WRITE_ERROR)) {
-					if (cmd->data)
-							cmd->data->error = -EIO;
-					cmd->error = -EIO;
 			}
 
 			jz4740_mmc_set_irq_enabled(host, irq_reg, false);
@@ -626,7 +629,7 @@ static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 			gpio_set_value(host->pdata->gpio_power,
 					!host->pdata->power_active_low);
 		host->cmdat |= JZ_MMC_CMDAT_INIT;
-		clk_enable(host->clk);
+		clk_prepare_enable(host->clk);
 		break;
 	case MMC_POWER_ON:
 		break;
@@ -634,7 +637,7 @@ static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		if (gpio_is_valid(host->pdata->gpio_power))
 			gpio_set_value(host->pdata->gpio_power,
 					host->pdata->power_active_low);
-		clk_disable(host->clk);
+		clk_disable_unprepare(host->clk);
 		break;
 	}
 
@@ -650,35 +653,6 @@ static void jz4740_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	}
 }
 
-static int jz4740_mmc_get_ro(struct mmc_host *mmc)
-{
-	struct jz4740_mmc_host *host = mmc_priv(mmc);
-	if (!gpio_is_valid(host->pdata->gpio_read_only))
-		return -ENOSYS;
-
-	return gpio_get_value(host->pdata->gpio_read_only) ^
-		host->pdata->read_only_active_low;
-}
-
-static int jz4740_mmc_get_cd(struct mmc_host *mmc)
-{
-	struct jz4740_mmc_host *host = mmc_priv(mmc);
-	if (!gpio_is_valid(host->pdata->gpio_card_detect))
-		return -ENOSYS;
-
-	return gpio_get_value(host->pdata->gpio_card_detect) ^
-			host->pdata->card_detect_active_low;
-}
-
-static irqreturn_t jz4740_mmc_card_detect_irq(int irq, void *devid)
-{
-	struct jz4740_mmc_host *host = devid;
-
-	mmc_detect_change(host->mmc, HZ / 2);
-
-	return IRQ_HANDLED;
-}
-
 static void jz4740_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 {
 	struct jz4740_mmc_host *host = mmc_priv(mmc);
@@ -688,8 +662,8 @@ static void jz4740_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
 static const struct mmc_host_ops jz4740_mmc_ops = {
 	.request	= jz4740_mmc_request,
 	.set_ios	= jz4740_mmc_set_ios,
-	.get_ro		= jz4740_mmc_get_ro,
-	.get_cd		= jz4740_mmc_get_cd,
+	.get_ro		= mmc_gpio_get_ro,
+	.get_cd		= mmc_gpio_get_cd,
 	.enable_sdio_irq = jz4740_mmc_enable_sdio_irq,
 };
 
@@ -724,58 +698,34 @@ static int jz4740_mmc_request_gpio(struct device *dev, int gpio,
 	return 0;
 }
 
-static int jz4740_mmc_request_gpios(struct platform_device *pdev)
+static int jz4740_mmc_request_gpios(struct mmc_host *mmc,
+	struct platform_device *pdev)
 {
-	int ret;
 	struct jz4740_mmc_platform_data *pdata = pdev->dev.platform_data;
+	int ret = 0;
 
 	if (!pdata)
 		return 0;
 
-	ret = jz4740_mmc_request_gpio(&pdev->dev, pdata->gpio_card_detect,
-			"MMC detect change", false, 0);
-	if (ret)
-		goto err;
-
-	ret = jz4740_mmc_request_gpio(&pdev->dev, pdata->gpio_read_only,
-			"MMC read only", false, 0);
-	if (ret)
-		goto err_free_gpio_card_detect;
-
-	ret = jz4740_mmc_request_gpio(&pdev->dev, pdata->gpio_power,
-			"MMC read only", true, pdata->power_active_low);
-	if (ret)
-		goto err_free_gpio_read_only;
-
-	return 0;
-
-err_free_gpio_read_only:
-	if (gpio_is_valid(pdata->gpio_read_only))
-		gpio_free(pdata->gpio_read_only);
-err_free_gpio_card_detect:
-	if (gpio_is_valid(pdata->gpio_card_detect))
-		gpio_free(pdata->gpio_card_detect);
-err:
-	return ret;
-}
-
-static int jz4740_mmc_request_cd_irq(struct platform_device *pdev,
-	struct jz4740_mmc_host *host)
-{
-	struct jz4740_mmc_platform_data *pdata = pdev->dev.platform_data;
+	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;
 
-	if (!gpio_is_valid(pdata->gpio_card_detect))
-		return 0;
+	if (gpio_is_valid(pdata->gpio_card_detect)) {
+		ret = mmc_gpio_request_cd(mmc, pdata->gpio_card_detect);
+		if (ret)
+			return ret;
+	}
 
-	host->card_detect_irq = gpio_to_irq(pdata->gpio_card_detect);
-	if (host->card_detect_irq < 0) {
-		dev_warn(&pdev->dev, "Failed to get card detect irq\n");
-		return 0;
+	if (gpio_is_valid(pdata->gpio_read_only)) {
+		ret = mmc_gpio_request_ro(mmc, pdata->gpio_read_only);
+		if (ret)
+			return ret;
 	}
 
-	return request_irq(host->card_detect_irq, jz4740_mmc_card_detect_irq,
-			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-			"MMC card detect", host);
+	return jz4740_mmc_request_gpio(&pdev->dev, pdata->gpio_power,
+			"MMC read only", true, pdata->power_active_low);
 }
 
 static void jz4740_mmc_free_gpios(struct platform_device *pdev)
@@ -787,10 +737,6 @@ static void jz4740_mmc_free_gpios(struct platform_device *pdev)
 
 	if (gpio_is_valid(pdata->gpio_power))
 		gpio_free(pdata->gpio_power);
-	if (gpio_is_valid(pdata->gpio_read_only))
-		gpio_free(pdata->gpio_read_only);
-	if (gpio_is_valid(pdata->gpio_card_detect))
-		gpio_free(pdata->gpio_card_detect);
 }
 
 static inline size_t jz4740_mmc_num_pins(struct jz4740_mmc_host *host)
@@ -808,6 +754,7 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 	struct mmc_host *mmc;
 	struct jz4740_mmc_host *host;
 	struct jz4740_mmc_platform_data *pdata;
+	struct resource *res;
 
 	pdata = pdev->dev.platform_data;
 
@@ -827,42 +774,28 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 		goto err_free_host;
 	}
 
-	host->clk = clk_get(&pdev->dev, "mmc");
+	host->clk = devm_clk_get(&pdev->dev, "mmc");
 	if (IS_ERR(host->clk)) {
 		ret = PTR_ERR(host->clk);
 		dev_err(&pdev->dev, "Failed to get mmc clock\n");
 		goto err_free_host;
 	}
 
-	host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!host->mem) {
-		ret = -ENOENT;
-		dev_err(&pdev->dev, "Failed to get base platform memory\n");
-		goto err_clk_put;
-	}
-
-	host->mem = request_mem_region(host->mem->start,
-					resource_size(host->mem), pdev->name);
-	if (!host->mem) {
-		ret = -EBUSY;
-		dev_err(&pdev->dev, "Failed to request base memory region\n");
-		goto err_clk_put;
-	}
-
-	host->base = ioremap_nocache(host->mem->start, resource_size(host->mem));
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	host->base = devm_ioremap_resource(&pdev->dev, res);
 	if (!host->base) {
 		ret = -EBUSY;
 		dev_err(&pdev->dev, "Failed to ioremap base memory\n");
-		goto err_release_mem_region;
+		goto err_free_host;
 	}
 
 	ret = jz_gpio_bulk_request(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request mmc pins: %d\n", ret);
-		goto err_iounmap;
+		goto err_free_host;
 	}
 
-	ret = jz4740_mmc_request_gpios(pdev);
+	ret = jz4740_mmc_request_gpios(mmc, pdev);
 	if (ret)
 		goto err_gpio_bulk_free;
 
@@ -885,17 +818,11 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 	spin_lock_init(&host->lock);
 	host->irq_mask = 0xffff;
 
-	ret = jz4740_mmc_request_cd_irq(pdev, host);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to request card detect irq\n");
-		goto err_free_gpios;
-	}
-
 	ret = request_threaded_irq(host->irq, jz_mmc_irq, jz_mmc_irq_worker, 0,
 			dev_name(&pdev->dev), host);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-		goto err_free_card_detect_irq;
+		goto err_free_gpios;
 	}
 
 	jz4740_mmc_reset(host);
@@ -918,21 +845,11 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
 
 err_free_irq:
 	free_irq(host->irq, host);
-err_free_card_detect_irq:
-	if (host->card_detect_irq >= 0)
-		free_irq(host->card_detect_irq, host);
 err_free_gpios:
 	jz4740_mmc_free_gpios(pdev);
 err_gpio_bulk_free:
 	jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
-err_iounmap:
-	iounmap(host->base);
-err_release_mem_region:
-	release_mem_region(host->mem->start, resource_size(host->mem));
-err_clk_put:
-	clk_put(host->clk);
 err_free_host:
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(mmc);
 
 	return ret;
@@ -949,24 +866,16 @@ static int jz4740_mmc_remove(struct platform_device *pdev)
 	mmc_remove_host(host->mmc);
 
 	free_irq(host->irq, host);
-	if (host->card_detect_irq >= 0)
-		free_irq(host->card_detect_irq, host);
 
 	jz4740_mmc_free_gpios(pdev);
 	jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
 
-	iounmap(host->base);
-	release_mem_region(host->mem->start, resource_size(host->mem));
-
-	clk_put(host->clk);
-
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(host->mmc);
 
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 
 static int jz4740_mmc_suspend(struct device *dev)
 {
@@ -990,13 +899,8 @@ static int jz4740_mmc_resume(struct device *dev)
 	return 0;
 }
 
-const struct dev_pm_ops jz4740_mmc_pm_ops = {
-	.suspend	= jz4740_mmc_suspend,
-	.resume		= jz4740_mmc_resume,
-	.poweroff	= jz4740_mmc_suspend,
-	.restore	= jz4740_mmc_resume,
-};
-
+static SIMPLE_DEV_PM_OPS(jz4740_mmc_pm_ops, jz4740_mmc_suspend,
+	jz4740_mmc_resume);
 #define JZ4740_MMC_PM_OPS (&jz4740_mmc_pm_ops)
 #else
 #define JZ4740_MMC_PM_OPS NULL

drivers/mmc/host/mvsdio.c

@@ -35,7 +35,7 @@
 
 #define DRIVER_NAME	"mvsdio"
 
-static int maxfreq = MVSD_CLOCKRATE_MAX;
+static int maxfreq;
 static int nodma;
 
 struct mvsd_host {
@@ -685,7 +685,6 @@ static int __init mvsd_probe(struct platform_device *pdev)
 	const struct mbus_dram_target_info *dram;
 	struct resource *r;
 	int ret, irq;
-	int gpio_card_detect, gpio_write_protect;
 	struct pinctrl *pinctrl;
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -718,6 +717,20 @@ static int __init mvsd_probe(struct platform_device *pdev)
 	if (!IS_ERR(host->clk))
 		clk_prepare_enable(host->clk);
 
+	mmc->ops = &mvsd_ops;
+
+	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+	mmc->f_min = DIV_ROUND_UP(host->base_clock, MVSD_BASE_DIV_MAX);
+	mmc->f_max = MVSD_CLOCKRATE_MAX;
+
+	mmc->max_blk_size = 2048;
+	mmc->max_blk_count = 65535;
+
+	mmc->max_segs = 1;
+	mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
+	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+
 	if (np) {
 		if (IS_ERR(host->clk)) {
 			dev_err(&pdev->dev, "DT platforms must have a clock associated\n");
@@ -726,35 +739,38 @@ static int __init mvsd_probe(struct platform_device *pdev)
 		}
 
 		host->base_clock = clk_get_rate(host->clk) / 2;
-		gpio_card_detect = of_get_named_gpio(np, "cd-gpios", 0);
-		gpio_write_protect = of_get_named_gpio(np, "wp-gpios", 0);
+		ret = mmc_of_parse(mmc);
+		if (ret < 0)
+			goto out;
 	} else {
 		const struct mvsdio_platform_data *mvsd_data;
+
 		mvsd_data = pdev->dev.platform_data;
 		if (!mvsd_data) {
 			ret = -ENXIO;
 			goto out;
 		}
+		mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ |
+			    MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 		host->base_clock = mvsd_data->clock / 2;
-		gpio_card_detect = mvsd_data->gpio_card_detect ? : -EINVAL;
-		gpio_write_protect = mvsd_data->gpio_write_protect ? : -EINVAL;
-	}
-
-	mmc->ops = &mvsd_ops;
-
-	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ |
-		    MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
-
-	mmc->f_min = DIV_ROUND_UP(host->base_clock, MVSD_BASE_DIV_MAX);
-	mmc->f_max = maxfreq;
+		/* GPIO 0 regarded as invalid for backward compatibility */
+		if (mvsd_data->gpio_card_detect &&
+		    gpio_is_valid(mvsd_data->gpio_card_detect)) {
+			ret = mmc_gpio_request_cd(mmc,
+						  mvsd_data->gpio_card_detect);
+			if (ret)
+				goto out;
+		} else {
+			mmc->caps |= MMC_CAP_NEEDS_POLL;
+		}
 
-	mmc->max_blk_size = 2048;
-	mmc->max_blk_count = 65535;
+		if (mvsd_data->gpio_write_protect &&
+		    gpio_is_valid(mvsd_data->gpio_write_protect))
+			mmc_gpio_request_ro(mmc, mvsd_data->gpio_write_protect);
+	}
 
-	mmc->max_segs = 1;
-	mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
-	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+	if (maxfreq)
+		mmc->f_max = maxfreq;
 
 	spin_lock_init(&host->lock);
 
@@ -777,15 +793,6 @@ static int __init mvsd_probe(struct platform_device *pdev)
 		goto out;
 	}
 
-	if (gpio_is_valid(gpio_card_detect)) {
-		ret = mmc_gpio_request_cd(mmc, gpio_card_detect);
-		if (ret)
-			goto out;
-	} else
-		mmc->caps |= MMC_CAP_NEEDS_POLL;
-
-	mmc_gpio_request_ro(mmc, gpio_write_protect);
-
 	setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host);
 	platform_set_drvdata(pdev, mmc);
 	ret = mmc_add_host(mmc);
@@ -793,10 +800,10 @@ static int __init mvsd_probe(struct platform_device *pdev)
 		goto out;
 
 	if (!(mmc->caps & MMC_CAP_NEEDS_POLL))
-		dev_notice(&pdev->dev, "using GPIO %d for card detection\n",
-			   gpio_card_detect);
+		dev_notice(&pdev->dev, "using GPIO for card detection\n");
 	else
-		dev_notice(&pdev->dev, "lacking card detect (fall back to polling)\n");
+		dev_notice(&pdev->dev,
+			   "lacking card detect (fall back to polling)\n");
 	return 0;
 
 out:
@@ -827,7 +834,6 @@ static int __exit mvsd_remove(struct platform_device *pdev)
 		clk_disable_unprepare(host->clk);
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/mmc/host/mxcmmc.c

@@ -1067,7 +1067,9 @@ static int mxcmci_probe(struct platform_device *pdev)
 		goto out_release_mem;
 	}
 
-	mmc_of_parse(mmc);
+	ret = mmc_of_parse(mmc);
+	if (ret)
+		goto out_free;
 	mmc->ops = &mxcmci_ops;
 
 	/* For devicetree parsing, the bus width is read from devicetree */
@@ -1219,8 +1221,6 @@ static int mxcmci_remove(struct platform_device *pdev)
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	struct mxcmci_host *host = mmc_priv(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	mmc_remove_host(mmc);
 
 	if (host->vcc)

drivers/mmc/host/mxs-mmc.c

@@ -41,7 +41,6 @@
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
 #include <linux/module.h>
-#include <linux/pinctrl/consumer.h>
 #include <linux/stmp_device.h>
 #include <linux/spi/mxs-spi.h>
 
@@ -580,7 +579,6 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	struct mxs_mmc_host *host;
 	struct mmc_host *mmc;
 	struct resource *iores;
-	struct pinctrl *pinctrl;
 	int ret = 0, irq_err;
 	struct regulator *reg_vmmc;
 	enum of_gpio_flags flags;
@@ -620,12 +618,6 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 		}
 	}
 
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl)) {
-		ret = PTR_ERR(pinctrl);
-		goto out_mmc_free;
-	}
-
 	ssp->clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(ssp->clk)) {
 		ret = PTR_ERR(ssp->clk);
@@ -639,6 +631,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	if (!ssp->dmach) {
 		dev_err(mmc_dev(host->mmc),
 			"%s: failed to request dma\n", __func__);
+		ret = -ENODEV;
 		goto out_clk_put;
 	}
 
@@ -708,8 +701,6 @@ static int mxs_mmc_remove(struct platform_device *pdev)
 
 	mmc_remove_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (ssp->dmach)
 		dma_release_channel(ssp->dmach);
 

drivers/mmc/host/omap.c

@@ -1413,33 +1413,17 @@ static int mmc_omap_probe(struct platform_device *pdev)
 	else
 		sig = host->id == 0 ? OMAP_DMA_MMC_TX : OMAP_DMA_MMC2_TX;
 	host->dma_tx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
-#if 0
-	if (!host->dma_tx) {
-		dev_err(host->dev, "unable to obtain TX DMA engine channel %u\n",
-			sig);
-		goto err_dma;
-	}
-#else
 	if (!host->dma_tx)
 		dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
 			sig);
-#endif
 	if (mmc_omap2())
 		sig = host->id == 0 ? OMAP24XX_DMA_MMC1_RX : OMAP24XX_DMA_MMC2_RX;
 	else
 		sig = host->id == 0 ? OMAP_DMA_MMC_RX : OMAP_DMA_MMC2_RX;
 	host->dma_rx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
-#if 0
-	if (!host->dma_rx) {
-		dev_err(host->dev, "unable to obtain RX DMA engine channel %u\n",
-			sig);
-		goto err_dma;
-	}
-#else
 	if (!host->dma_rx)
 		dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
 			sig);
-#endif
 
 	ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
 	if (ret)
@@ -1500,8 +1484,6 @@ static int mmc_omap_remove(struct platform_device *pdev)
 	struct mmc_omap_host *host = platform_get_drvdata(pdev);
 	int i;
 
-	platform_set_drvdata(pdev, NULL);
-
 	BUG_ON(host == NULL);
 
 	for (i = 0; i < host->nr_slots; i++)

drivers/mmc/host/omap_hsmmc.c

@@ -2047,7 +2047,6 @@ err_irq:
 	}
 err1:
 	iounmap(host->base);
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(mmc);
 err_alloc:
 	omap_hsmmc_gpio_free(pdata);
@@ -2093,7 +2092,6 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res)
 		release_mem_region(res->start, resource_size(res));
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/mmc/host/pxamci.c

@@ -834,8 +834,6 @@ static int pxamci_remove(struct platform_device *pdev)
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	int gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct pxamci_host *host = mmc_priv(mmc);
 

drivers/mmc/host/rtsx_pci_sdmmc.c

@@ -1316,8 +1316,6 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
 	mmc_remove_host(mmc);
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	dev_dbg(&(pdev->dev),
 		": Realtek PCI-E SDMMC controller has been removed\n");
 

drivers/mmc/host/sdhci-acpi.c

@@ -31,10 +31,13 @@
 #include <linux/bitops.h>
 #include <linux/types.h>
 #include <linux/err.h>
+#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/acpi.h>
+#include <linux/acpi_gpio.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/delay.h>
 
 #include <linux/mmc/host.h>
 #include <linux/mmc/pm.h>
@@ -83,12 +86,37 @@ static int sdhci_acpi_enable_dma(struct sdhci_host *host)
 	return 0;
 }
 
+static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
+{
+	u8 reg;
+
+	reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
+	reg |= 0x10;
+	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+	/* For eMMC, minimum is 1us but give it 9us for good measure */
+	udelay(9);
+	reg &= ~0x10;
+	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+	/* For eMMC, minimum is 200us but give it 300us for good measure */
+	usleep_range(300, 1000);
+}
+
 static const struct sdhci_ops sdhci_acpi_ops_dflt = {
 	.enable_dma = sdhci_acpi_enable_dma,
 };
 
+static const struct sdhci_ops sdhci_acpi_ops_int = {
+	.enable_dma = sdhci_acpi_enable_dma,
+	.hw_reset   = sdhci_acpi_int_hw_reset,
+};
+
+static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
+	.ops = &sdhci_acpi_ops_int,
+};
+
 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
-	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
+	.chip    = &sdhci_acpi_chip_int,
+	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | MMC_CAP_HW_RESET,
 	.caps2   = MMC_CAP2_HC_ERASE_SZ,
 	.flags   = SDHCI_ACPI_RUNTIME_PM,
 };
@@ -101,6 +129,8 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
 };
 
 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
+	.flags   = SDHCI_ACPI_SD_CD | SDHCI_ACPI_RUNTIME_PM,
+	.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON,
 };
 
 struct sdhci_acpi_uid_slot {
@@ -161,6 +191,59 @@ static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(acpi_handle handle,
 	return slot;
 }
 
+#ifdef CONFIG_PM_RUNTIME
+
+static irqreturn_t sdhci_acpi_sd_cd(int irq, void *dev_id)
+{
+	mmc_detect_change(dev_id, msecs_to_jiffies(200));
+	return IRQ_HANDLED;
+}
+
+static int sdhci_acpi_add_own_cd(struct device *dev, int gpio,
+				 struct mmc_host *mmc)
+{
+	unsigned long flags;
+	int err, irq;
+
+	if (gpio < 0) {
+		err = gpio;
+		goto out;
+	}
+
+	err = devm_gpio_request_one(dev, gpio, GPIOF_DIR_IN, "sd_cd");
+	if (err)
+		goto out;
+
+	irq = gpio_to_irq(gpio);
+	if (irq < 0) {
+		err = irq;
+		goto out_free;
+	}
+
+	flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
+	err = devm_request_irq(dev, irq, sdhci_acpi_sd_cd, flags, "sd_cd", mmc);
+	if (err)
+		goto out_free;
+
+	return 0;
+
+out_free:
+	devm_gpio_free(dev, gpio);
+out:
+	dev_warn(dev, "failed to setup card detect wake up\n");
+	return err;
+}
+
+#else
+
+static int sdhci_acpi_add_own_cd(struct device *dev, int gpio,
+				 struct mmc_host *mmc)
+{
+	return 0;
+}
+
+#endif
+
 static int sdhci_acpi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -171,7 +254,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	struct resource *iomem;
 	resource_size_t len;
 	const char *hid;
-	int err;
+	int err, gpio;
 
 	if (acpi_bus_get_device(handle, &device))
 		return -ENODEV;
@@ -196,6 +279,8 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 
+	gpio = acpi_get_gpio_by_index(dev, 0, NULL);
+
 	c = sdhci_priv(host);
 	c->host = host;
 	c->slot = sdhci_acpi_get_slot(handle, hid);
@@ -251,6 +336,11 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	if (err)
 		goto err_free;
 
+	if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
+		if (sdhci_acpi_add_own_cd(dev, gpio, host->mmc))
+			c->use_runtime_pm = false;
+	}
+
 	if (c->use_runtime_pm) {
 		pm_runtime_set_active(dev);
 		pm_suspend_ignore_children(dev, 1);
@@ -262,7 +352,6 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	return 0;
 
 err_free:
-	platform_set_drvdata(pdev, NULL);
 	sdhci_free_host(c->host);
 	return err;
 }
@@ -281,7 +370,6 @@ static int sdhci_acpi_remove(struct platform_device *pdev)
 
 	dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
 	sdhci_remove_host(c->host, dead);
-	platform_set_drvdata(pdev, NULL);
 	sdhci_free_host(c->host);
 
 	return 0;

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

@@ -0,0 +1,348 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/highmem.h>
+#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/version.h>
+#include <linux/mmc/slot-gpio.h>
+
+#include "sdhci-pltfm.h"
+#include "sdhci.h"
+
+#define SDHCI_SOFT_RESET			0x01000000
+#define KONA_SDHOST_CORECTRL			0x8000
+#define KONA_SDHOST_CD_PINCTRL			0x00000008
+#define KONA_SDHOST_STOP_HCLK			0x00000004
+#define KONA_SDHOST_RESET			0x00000002
+#define KONA_SDHOST_EN				0x00000001
+
+#define KONA_SDHOST_CORESTAT			0x8004
+#define KONA_SDHOST_WP				0x00000002
+#define KONA_SDHOST_CD_SW			0x00000001
+
+#define KONA_SDHOST_COREIMR			0x8008
+#define KONA_SDHOST_IP				0x00000001
+
+#define KONA_SDHOST_COREISR			0x800C
+#define KONA_SDHOST_COREIMSR			0x8010
+#define KONA_SDHOST_COREDBG1			0x8014
+#define KONA_SDHOST_COREGPO_MASK		0x8018
+
+#define SD_DETECT_GPIO_DEBOUNCE_128MS		128
+
+#define KONA_MMC_AUTOSUSPEND_DELAY		(50)
+
+struct sdhci_bcm_kona_dev {
+	struct mutex	write_lock; /* protect back to back writes */
+};
+
+
+static int sdhci_bcm_kona_sd_reset(struct sdhci_host *host)
+{
+	unsigned int val;
+	unsigned long timeout;
+
+	/* This timeout should be sufficent for core to reset */
+	timeout = jiffies + msecs_to_jiffies(100);
+
+	/* reset the host using the top level reset */
+	val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
+	val |= KONA_SDHOST_RESET;
+	sdhci_writel(host, val, KONA_SDHOST_CORECTRL);
+
+	while (!(sdhci_readl(host, KONA_SDHOST_CORECTRL) & KONA_SDHOST_RESET)) {
+		if (time_is_before_jiffies(timeout)) {
+			pr_err("Error: sd host is stuck in reset!!!\n");
+			return -EFAULT;
+		}
+	}
+
+	/* bring the host out of reset */
+	val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
+	val &= ~KONA_SDHOST_RESET;
+
+	/*
+	 * Back-to-Back register write needs a delay of 1ms at bootup (min 10uS)
+	 * Back-to-Back writes to same register needs delay when SD bus clock
+	 * is very low w.r.t AHB clock, mainly during boot-time and during card
+	 * insert-removal.
+	 */
+	usleep_range(1000, 5000);
+	sdhci_writel(host, val, KONA_SDHOST_CORECTRL);
+
+	return 0;
+}
+
+static void sdhci_bcm_kona_sd_init(struct sdhci_host *host)
+{
+	unsigned int val;
+
+	/* enable the interrupt from the IP core */
+	val = sdhci_readl(host, KONA_SDHOST_COREIMR);
+	val |= KONA_SDHOST_IP;
+	sdhci_writel(host, val, KONA_SDHOST_COREIMR);
+
+	/* Enable the AHB clock gating module to the host */
+	val = sdhci_readl(host, KONA_SDHOST_CORECTRL);
+	val |= KONA_SDHOST_EN;
+
+	/*
+	 * Back-to-Back register write needs a delay of 1ms at bootup (min 10uS)
+	 * Back-to-Back writes to same register needs delay when SD bus clock
+	 * is very low w.r.t AHB clock, mainly during boot-time and during card
+	 * insert-removal.
+	 */
+	usleep_range(1000, 5000);
+	sdhci_writel(host, val, KONA_SDHOST_CORECTRL);
+}
+
+/*
+ * Software emulation of the SD card insertion/removal. Set insert=1 for insert
+ * and insert=0 for removal. The card detection is done by GPIO. For Broadcom
+ * IP to function properly the bit 0 of CORESTAT register needs to be set/reset
+ * to generate the CD IRQ handled in sdhci.c which schedules card_tasklet.
+ */
+static int sdhci_bcm_kona_sd_card_emulate(struct sdhci_host *host, int insert)
+{
+	struct sdhci_pltfm_host *pltfm_priv = sdhci_priv(host);
+	struct sdhci_bcm_kona_dev *kona_dev = sdhci_pltfm_priv(pltfm_priv);
+	u32 val;
+
+	/*
+	 * Back-to-Back register write needs a delay of min 10uS.
+	 * Back-to-Back writes to same register needs delay when SD bus clock
+	 * is very low w.r.t AHB clock, mainly during boot-time and during card
+	 * insert-removal.
+	 * We keep 20uS
+	 */
+	mutex_lock(&kona_dev->write_lock);
+	udelay(20);
+	val = sdhci_readl(host, KONA_SDHOST_CORESTAT);
+
+	if (insert) {
+		int ret;
+
+		ret = mmc_gpio_get_ro(host->mmc);
+		if (ret >= 0)
+			val = (val & ~KONA_SDHOST_WP) |
+				((ret) ? KONA_SDHOST_WP : 0);
+
+		val |= KONA_SDHOST_CD_SW;
+		sdhci_writel(host, val, KONA_SDHOST_CORESTAT);
+	} else {
+		val &= ~KONA_SDHOST_CD_SW;
+		sdhci_writel(host, val, KONA_SDHOST_CORESTAT);
+	}
+	mutex_unlock(&kona_dev->write_lock);
+
+	return 0;
+}
+
+/*
+ * SD card interrupt event callback
+ */
+void sdhci_bcm_kona_card_event(struct sdhci_host *host)
+{
+	if (mmc_gpio_get_cd(host->mmc) > 0) {
+		dev_dbg(mmc_dev(host->mmc),
+			"card inserted\n");
+		sdhci_bcm_kona_sd_card_emulate(host, 1);
+	} else {
+		dev_dbg(mmc_dev(host->mmc),
+			"card removed\n");
+		sdhci_bcm_kona_sd_card_emulate(host, 0);
+	}
+}
+
+/*
+ * 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)
+{
+	/*
+	 *  JEDEC and SD spec specify supplying 74 continuous clocks to
+	 * device after power up. With minimum bus (100KHz) that
+	 * that translates to 740us
+	 */
+	if (power_mode != MMC_POWER_OFF)
+		udelay(740);
+}
+
+static struct sdhci_ops sdhci_bcm_kona_ops = {
+	.get_max_clock = sdhci_bcm_kona_get_max_clk,
+	.get_timeout_clock = sdhci_bcm_kona_get_timeout_clock,
+	.platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
+	.card_event = sdhci_bcm_kona_card_event,
+};
+
+static struct sdhci_pltfm_data sdhci_pltfm_data_kona = {
+	.ops    = &sdhci_bcm_kona_ops,
+	.quirks = SDHCI_QUIRK_NO_CARD_NO_RESET |
+		SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | SDHCI_QUIRK_32BIT_DMA_ADDR |
+		SDHCI_QUIRK_32BIT_DMA_SIZE | SDHCI_QUIRK_32BIT_ADMA_SIZE |
+		SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
+		SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
+};
+
+static const struct of_device_id sdhci_bcm_kona_of_match[] __initdata = {
+	{ .compatible = "bcm,kona-sdhci"},
+	{}
+};
+MODULE_DEVICE_TABLE(of, sdhci_bcm_kona_of_match);
+
+static int __init sdhci_bcm_kona_probe(struct platform_device *pdev)
+{
+	struct sdhci_bcm_kona_dev *kona_dev = NULL;
+	struct sdhci_pltfm_host *pltfm_priv;
+	struct device *dev = &pdev->dev;
+	struct sdhci_host *host;
+	int ret;
+
+	ret = 0;
+
+	host = sdhci_pltfm_init(pdev, &sdhci_pltfm_data_kona,
+			sizeof(*kona_dev));
+	if (IS_ERR(host))
+		return PTR_ERR(host);
+
+	dev_dbg(dev, "%s: inited. IOADDR=%p\n", __func__, host->ioaddr);
+
+	pltfm_priv = sdhci_priv(host);
+
+	kona_dev = sdhci_pltfm_priv(pltfm_priv);
+	mutex_init(&kona_dev->write_lock);
+
+	mmc_of_parse(host->mmc);
+
+	if (!host->mmc->f_max) {
+		dev_err(&pdev->dev, "Missing max-freq for SDHCI cfg\n");
+		ret = -ENXIO;
+		goto err_pltfm_free;
+	}
+
+	dev_dbg(dev, "non-removable=%c\n",
+		(host->mmc->caps & MMC_CAP_NONREMOVABLE) ? 'Y' : 'N');
+	dev_dbg(dev, "cd_gpio %c, wp_gpio %c\n",
+		(mmc_gpio_get_cd(host->mmc) != -ENOSYS) ? 'Y' : 'N',
+		(mmc_gpio_get_ro(host->mmc) != -ENOSYS) ? 'Y' : 'N');
+
+	if (host->mmc->caps | MMC_CAP_NONREMOVABLE)
+		host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+
+	dev_dbg(dev, "is_8bit=%c\n",
+		(host->mmc->caps | MMC_CAP_8_BIT_DATA) ? 'Y' : 'N');
+
+	ret = sdhci_bcm_kona_sd_reset(host);
+	if (ret)
+		goto err_pltfm_free;
+
+	sdhci_bcm_kona_sd_init(host);
+
+	ret = sdhci_add_host(host);
+	if (ret) {
+		dev_err(dev, "Failed sdhci_add_host\n");
+		goto err_reset;
+	}
+
+	/* if device is eMMC, emulate card insert right here */
+	if (host->mmc->caps | MMC_CAP_NONREMOVABLE) {
+		ret = sdhci_bcm_kona_sd_card_emulate(host, 1);
+		if (ret) {
+			dev_err(dev,
+				"unable to emulate card insertion\n");
+			goto err_remove_host;
+		}
+	}
+	/*
+	 * Since the card detection GPIO interrupt is configured to be
+	 * edge sensitive, check the initial GPIO value here, emulate
+	 * only if the card is present
+	 */
+	if (mmc_gpio_get_cd(host->mmc) > 0)
+		sdhci_bcm_kona_sd_card_emulate(host, 1);
+
+	dev_dbg(dev, "initialized properly\n");
+	return 0;
+
+err_remove_host:
+	sdhci_remove_host(host, 0);
+
+err_reset:
+	sdhci_bcm_kona_sd_reset(host);
+
+err_pltfm_free:
+	sdhci_pltfm_free(pdev);
+
+	dev_err(dev, "Probing of sdhci-pltfm failed: %d\n", ret);
+	return ret;
+}
+
+static int __exit sdhci_bcm_kona_remove(struct platform_device *pdev)
+{
+	struct sdhci_host *host = platform_get_drvdata(pdev);
+	int dead;
+	u32 scratch;
+
+	dead = 0;
+	scratch = readl(host->ioaddr + SDHCI_INT_STATUS);
+	if (scratch == (u32)-1)
+		dead = 1;
+	sdhci_remove_host(host, dead);
+
+	sdhci_free_host(host);
+
+	return 0;
+}
+
+static struct platform_driver sdhci_bcm_kona_driver = {
+	.driver		= {
+		.name	= "sdhci-kona",
+		.owner	= THIS_MODULE,
+		.pm	= SDHCI_PLTFM_PMOPS,
+		.of_match_table = of_match_ptr(sdhci_bcm_kona_of_match),
+	},
+	.probe		= sdhci_bcm_kona_probe,
+	.remove		= __exit_p(sdhci_bcm_kona_remove),
+};
+module_platform_driver(sdhci_bcm_kona_driver);
+
+MODULE_DESCRIPTION("SDHCI driver for Broadcom Kona platform");
+MODULE_AUTHOR("Broadcom");
+MODULE_LICENSE("GPL v2");

drivers/mmc/host/sdhci-bcm2835.c

@@ -148,7 +148,7 @@ static int bcm2835_sdhci_probe(struct platform_device *pdev)
 	struct sdhci_pltfm_host *pltfm_host;
 	int ret;
 
-	host = sdhci_pltfm_init(pdev, &bcm2835_sdhci_pdata);
+	host = sdhci_pltfm_init(pdev, &bcm2835_sdhci_pdata, 0);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 

drivers/mmc/host/sdhci-cns3xxx.c

@@ -96,7 +96,7 @@ static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
 
 static int sdhci_cns3xxx_probe(struct platform_device *pdev)
 {
-	return sdhci_pltfm_register(pdev, &sdhci_cns3xxx_pdata);
+	return sdhci_pltfm_register(pdev, &sdhci_cns3xxx_pdata, 0);
 }
 
 static int sdhci_cns3xxx_remove(struct platform_device *pdev)

drivers/mmc/host/sdhci-dove.c

@@ -130,7 +130,7 @@ static int sdhci_dove_probe(struct platform_device *pdev)
 		gpio_direction_input(priv->gpio_cd);
 	}
 
-	host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata);
+	host = sdhci_pltfm_init(pdev, &sdhci_dove_pdata, 0);
 	if (IS_ERR(host)) {
 		ret = PTR_ERR(host);
 		goto err_sdhci_pltfm_init;

drivers/mmc/host/sdhci-esdhc-imx.c

@@ -384,6 +384,20 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg)
 	}
 }
 
+static unsigned int esdhc_pltfm_get_max_clock(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct pltfm_imx_data *imx_data = pltfm_host->priv;
+	struct esdhc_platform_data *boarddata = &imx_data->boarddata;
+
+	u32 f_host = clk_get_rate(pltfm_host->clk);
+
+	if (boarddata->f_max && (boarddata->f_max < f_host))
+		return boarddata->f_max;
+	else
+		return f_host;
+}
+
 static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -391,6 +405,14 @@ static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host)
 	return clk_get_rate(pltfm_host->clk) / 256 / 16;
 }
 
+static inline void esdhc_pltfm_set_clock(struct sdhci_host *host,
+					 unsigned int clock)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	esdhc_set_clock(host, clock, clk_get_rate(pltfm_host->clk));
+}
+
 static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -438,8 +460,8 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
 	.write_l = esdhc_writel_le,
 	.write_w = esdhc_writew_le,
 	.write_b = esdhc_writeb_le,
-	.set_clock = esdhc_set_clock,
-	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
+	.set_clock = esdhc_pltfm_set_clock,
+	.get_max_clock = esdhc_pltfm_get_max_clock,
 	.get_min_clock = esdhc_pltfm_get_min_clock,
 	.get_ro = esdhc_pltfm_get_ro,
 	.platform_bus_width = esdhc_pltfm_bus_width,
@@ -482,6 +504,8 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
 
 	of_property_read_u32(np, "bus-width", &boarddata->max_bus_width);
 
+	of_property_read_u32(np, "max-frequency", &boarddata->f_max);
+
 	return 0;
 }
 #else
@@ -503,7 +527,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 	int err;
 	struct pltfm_imx_data *imx_data;
 
-	host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata);
+	host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata, 0);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 

drivers/mmc/host/sdhci-esdhc.h

@@ -36,13 +36,21 @@
 /* pltfm-specific */
 #define ESDHC_HOST_CONTROL_LE	0x20
 
+/*
+ * P2020 interpretation of the SDHCI_HOST_CONTROL register
+ */
+#define ESDHC_CTRL_4BITBUS          (0x1 << 1)
+#define ESDHC_CTRL_8BITBUS          (0x2 << 1)
+#define ESDHC_CTRL_BUSWIDTH_MASK    (0x3 << 1)
+
 /* OF-specific */
 #define ESDHC_DMA_SYSCTL	0x40c
 #define ESDHC_DMA_SNOOP		0x00000040
 
 #define ESDHC_HOST_CONTROL_RES	0x05
 
-static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
+static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock,
+				   unsigned int host_clock)
 {
 	int pre_div = 2;
 	int div = 1;
@@ -56,14 +64,14 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 		| ESDHC_CLOCK_MASK);
 	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
 
-	while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
+	while (host_clock / pre_div / 16 > clock && pre_div < 256)
 		pre_div *= 2;
 
-	while (host->max_clk / pre_div / div > clock && div < 16)
+	while (host_clock / pre_div / div > clock && div < 16)
 		div++;
 
 	dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
-		clock, host->max_clk / pre_div / div);
+		clock, host_clock / pre_div / div);
 
 	pre_div >>= 1;
 	div--;

drivers/mmc/host/sdhci-of-esdhc.c

@@ -13,6 +13,7 @@
  * your option) any later version.
  */
 
+#include <linux/err.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/delay.h>
@@ -120,6 +121,13 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
 	if (reg == SDHCI_HOST_CONTROL) {
 		u32 dma_bits;
 
+		/*
+		 * If host control register is not standard, exit
+		 * this function
+		 */
+		if (host->quirks2 & SDHCI_QUIRK2_BROKEN_HOST_CONTROL)
+			return;
+
 		/* DMA select is 22,23 bits in Protocol Control Register */
 		dma_bits = (val & SDHCI_CTRL_DMA_MASK) << 5;
 		clrsetbits_be32(host->ioaddr + reg , SDHCI_CTRL_DMA_MASK << 5,
@@ -200,7 +208,7 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
 	}
 
 	/* Set the clock */
-	esdhc_set_clock(host, clock);
+	esdhc_set_clock(host, clock, host->max_clk);
 }
 
 #ifdef CONFIG_PM
@@ -230,6 +238,30 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
 		host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
 }
 
+static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
+{
+	u32 ctrl;
+
+	switch (width) {
+	case MMC_BUS_WIDTH_8:
+		ctrl = ESDHC_CTRL_8BITBUS;
+		break;
+
+	case MMC_BUS_WIDTH_4:
+		ctrl = ESDHC_CTRL_4BITBUS;
+		break;
+
+	default:
+		ctrl = 0;
+		break;
+	}
+
+	clrsetbits_be32(host->ioaddr + SDHCI_HOST_CONTROL,
+			ESDHC_CTRL_BUSWIDTH_MASK, ctrl);
+
+	return 0;
+}
+
 static const struct sdhci_ops sdhci_esdhc_ops = {
 	.read_l = esdhc_readl,
 	.read_w = esdhc_readw,
@@ -247,6 +279,7 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
 	.platform_resume = esdhc_of_resume,
 #endif
 	.adma_workaround = esdhci_of_adma_workaround,
+	.platform_bus_width = esdhc_pltfm_bus_width,
 };
 
 static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
@@ -262,7 +295,33 @@ static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
 
 static int sdhci_esdhc_probe(struct platform_device *pdev)
 {
-	return sdhci_pltfm_register(pdev, &sdhci_esdhc_pdata);
+	struct sdhci_host *host;
+	struct device_node *np;
+	int ret;
+
+	host = sdhci_pltfm_init(pdev, &sdhci_esdhc_pdata, 0);
+	if (IS_ERR(host))
+		return PTR_ERR(host);
+
+	sdhci_get_of_property(pdev);
+
+	np = pdev->dev.of_node;
+	if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
+		/*
+		 * Freescale messed up with P2020 as it has a non-standard
+		 * host control register
+		 */
+		host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
+	}
+
+	/* call to generic mmc_of_parse to support additional capabilities */
+	mmc_of_parse(host->mmc);
+
+	ret = sdhci_add_host(host);
+	if (ret)
+		sdhci_pltfm_free(pdev);
+
+	return ret;
 }
 
 static int sdhci_esdhc_remove(struct platform_device *pdev)

drivers/mmc/host/sdhci-of-hlwd.c

@@ -68,7 +68,7 @@ static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
 
 static int sdhci_hlwd_probe(struct platform_device *pdev)
 {
-	return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata);
+	return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata, 0);
 }
 
 static int sdhci_hlwd_remove(struct platform_device *pdev)

drivers/mmc/host/sdhci-pci.c

@@ -36,6 +36,7 @@
 #define PCI_DEVICE_ID_INTEL_BYT_EMMC	0x0f14
 #define PCI_DEVICE_ID_INTEL_BYT_SDIO	0x0f15
 #define PCI_DEVICE_ID_INTEL_BYT_SD	0x0f16
+#define PCI_DEVICE_ID_INTEL_BYT_EMMC2	0x0f50
 
 /*
  * PCI registers
@@ -77,6 +78,8 @@ struct sdhci_pci_slot {
 	int			rst_n_gpio;
 	int			cd_gpio;
 	int			cd_irq;
+
+	void (*hw_reset)(struct sdhci_host *host);
 };
 
 struct sdhci_pci_chip {
@@ -307,10 +310,27 @@ static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
 	.probe_slot	= pch_hc_probe_slot,
 };
 
+static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
+{
+	u8 reg;
+
+	reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
+	reg |= 0x10;
+	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+	/* For eMMC, minimum is 1us but give it 9us for good measure */
+	udelay(9);
+	reg &= ~0x10;
+	sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+	/* For eMMC, minimum is 200us but give it 300us for good measure */
+	usleep_range(300, 1000);
+}
+
 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
 {
-	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
+	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
+				 MMC_CAP_HW_RESET;
 	slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
+	slot->hw_reset = sdhci_pci_int_hw_reset;
 	return 0;
 }
 
@@ -332,6 +352,8 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
+	.quirks2	= SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON,
+	.allow_runtime_pm = true,
 };
 
 /* O2Micro extra registers */
@@ -909,6 +931,14 @@ static const struct pci_device_id pci_ids[] = {
 		.driver_data	= (kernel_ulong_t)&sdhci_intel_byt_sd,
 	},
 
+	{
+		.vendor		= PCI_VENDOR_ID_INTEL,
+		.device		= PCI_DEVICE_ID_INTEL_BYT_EMMC2,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (kernel_ulong_t)&sdhci_intel_byt_emmc,
+	},
+
 	{
 		.vendor		= PCI_VENDOR_ID_O2,
 		.device		= PCI_DEVICE_ID_O2_8120,
@@ -1014,7 +1044,7 @@ static int sdhci_pci_bus_width(struct sdhci_host *host, int width)
 	return 0;
 }
 
-static void sdhci_pci_hw_reset(struct sdhci_host *host)
+static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
 {
 	struct sdhci_pci_slot *slot = sdhci_priv(host);
 	int rst_n_gpio = slot->rst_n_gpio;
@@ -1029,6 +1059,14 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
 	usleep_range(300, 1000);
 }
 
+static void sdhci_pci_hw_reset(struct sdhci_host *host)
+{
+	struct sdhci_pci_slot *slot = sdhci_priv(host);
+
+	if (slot->hw_reset)
+		slot->hw_reset(host);
+}
+
 static const struct sdhci_ops sdhci_pci_ops = {
 	.enable_dma	= sdhci_pci_enable_dma,
 	.platform_bus_width	= sdhci_pci_bus_width,
@@ -1326,6 +1364,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
 		if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
 			gpio_direction_output(slot->rst_n_gpio, 1);
 			slot->host->mmc->caps |= MMC_CAP_HW_RESET;
+			slot->hw_reset = sdhci_pci_gpio_hw_reset;
 		} else {
 			dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
 			slot->rst_n_gpio = -EINVAL;

drivers/mmc/host/sdhci-pltfm.c

@@ -115,10 +115,10 @@ void sdhci_get_of_property(struct platform_device *pdev) {}
 EXPORT_SYMBOL_GPL(sdhci_get_of_property);
 
 struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
-				    const struct sdhci_pltfm_data *pdata)
+				    const struct sdhci_pltfm_data *pdata,
+				    size_t priv_size)
 {
 	struct sdhci_host *host;
-	struct sdhci_pltfm_host *pltfm_host;
 	struct device_node *np = pdev->dev.of_node;
 	struct resource *iomem;
 	int ret;
@@ -134,24 +134,27 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
 
 	/* Some PCI-based MFD need the parent here */
 	if (pdev->dev.parent != &platform_bus && !np)
-		host = sdhci_alloc_host(pdev->dev.parent, sizeof(*pltfm_host));
+		host = sdhci_alloc_host(pdev->dev.parent,
+			sizeof(struct sdhci_pltfm_host) + priv_size);
 	else
-		host = sdhci_alloc_host(&pdev->dev, sizeof(*pltfm_host));
+		host = sdhci_alloc_host(&pdev->dev,
+			sizeof(struct sdhci_pltfm_host) + priv_size);
 
 	if (IS_ERR(host)) {
 		ret = PTR_ERR(host);
 		goto err;
 	}
 
-	pltfm_host = sdhci_priv(host);
-
 	host->hw_name = dev_name(&pdev->dev);
 	if (pdata && pdata->ops)
 		host->ops = pdata->ops;
 	else
 		host->ops = &sdhci_pltfm_ops;
-	if (pdata)
+	if (pdata) {
 		host->quirks = pdata->quirks;
+		host->quirks2 = pdata->quirks2;
+	}
+
 	host->irq = platform_get_irq(pdev, 0);
 
 	if (!request_mem_region(iomem->start, resource_size(iomem),
@@ -197,17 +200,17 @@ void sdhci_pltfm_free(struct platform_device *pdev)
 	iounmap(host->ioaddr);
 	release_mem_region(iomem->start, resource_size(iomem));
 	sdhci_free_host(host);
-	platform_set_drvdata(pdev, NULL);
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_free);
 
 int sdhci_pltfm_register(struct platform_device *pdev,
-			 const struct sdhci_pltfm_data *pdata)
+			const struct sdhci_pltfm_data *pdata,
+			size_t priv_size)
 {
 	struct sdhci_host *host;
 	int ret = 0;
 
-	host = sdhci_pltfm_init(pdev, pdata);
+	host = sdhci_pltfm_init(pdev, pdata, priv_size);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 

drivers/mmc/host/sdhci-pltfm.h

@@ -18,6 +18,7 @@
 struct sdhci_pltfm_data {
 	const struct sdhci_ops *ops;
 	unsigned int quirks;
+	unsigned int quirks2;
 };
 
 struct sdhci_pltfm_host {
@@ -27,6 +28,8 @@ struct sdhci_pltfm_host {
 	/* migrate from sdhci_of_host */
 	unsigned int clock;
 	u16 xfer_mode_shadow;
+
+	unsigned long private[0] ____cacheline_aligned;
 };
 
 #ifdef CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
@@ -91,15 +94,22 @@ static inline void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg)
 extern void sdhci_get_of_property(struct platform_device *pdev);
 
 extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
-					  const struct sdhci_pltfm_data *pdata);
+					  const struct sdhci_pltfm_data *pdata,
+					  size_t priv_size);
 extern void sdhci_pltfm_free(struct platform_device *pdev);
 
 extern int sdhci_pltfm_register(struct platform_device *pdev,
-				const struct sdhci_pltfm_data *pdata);
+				const struct sdhci_pltfm_data *pdata,
+				size_t priv_size);
 extern int sdhci_pltfm_unregister(struct platform_device *pdev);
 
 extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);
 
+static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
+{
+	return (void *)host->private;
+}
+
 #ifdef CONFIG_PM
 extern const struct dev_pm_ops sdhci_pltfm_pmops;
 #define SDHCI_PLTFM_PMOPS (&sdhci_pltfm_pmops)

drivers/mmc/host/sdhci-pxav2.c

@@ -175,7 +175,7 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
 	if (!pxa)
 		return -ENOMEM;
 
-	host = sdhci_pltfm_init(pdev, NULL);
+	host = sdhci_pltfm_init(pdev, NULL, 0);
 	if (IS_ERR(host)) {
 		kfree(pxa);
 		return PTR_ERR(host);
@@ -253,8 +253,6 @@ static int sdhci_pxav2_remove(struct platform_device *pdev)
 	sdhci_pltfm_free(pdev);
 	kfree(pxa);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/mmc/host/sdhci-pxav3.c

@@ -230,7 +230,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 	if (!pxa)
 		return -ENOMEM;
 
-	host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata);
+	host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata, 0);
 	if (IS_ERR(host)) {
 		kfree(pxa);
 		return PTR_ERR(host);
@@ -252,7 +252,9 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 
 	match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
 	if (match) {
-		mmc_of_parse(host->mmc);
+		ret = mmc_of_parse(host->mmc);
+		if (ret)
+			goto err_of_parse;
 		sdhci_get_of_property(pdev);
 		pdata = pxav3_get_mmc_pdata(dev);
 	} else if (pdata) {
@@ -285,18 +287,15 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 		}
 	}
 
-	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_suspend_ignore_children(&pdev->dev, 1);
-	pm_runtime_get_noresume(&pdev->dev);
 
 	ret = sdhci_add_host(host);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add host\n");
-		pm_runtime_forbid(&pdev->dev);
-		pm_runtime_disable(&pdev->dev);
 		goto err_add_host;
 	}
 
@@ -313,10 +312,13 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 
 	return 0;
 
+err_of_parse:
+err_cd_req:
 err_add_host:
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	clk_disable_unprepare(clk);
 	clk_put(clk);
-err_cd_req:
 err_clk_get:
 	sdhci_pltfm_free(pdev);
 	kfree(pxa);
@@ -339,8 +341,6 @@ static int sdhci_pxav3_remove(struct platform_device *pdev)
 	sdhci_pltfm_free(pdev);
 	kfree(pxa);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/mmc/host/sdhci-s3c.c

@@ -745,7 +745,6 @@ static int sdhci_s3c_remove(struct platform_device *pdev)
 	clk_disable_unprepare(sc->clk_io);
 
 	sdhci_free_host(host);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/mmc/host/sdhci-sirf.c

@@ -13,7 +13,6 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/mmc/slot-gpio.h>
-#include <linux/pinctrl/consumer.h>
 #include "sdhci-pltfm.h"
 
 struct sdhci_sirf_priv {
@@ -24,7 +23,7 @@ struct sdhci_sirf_priv {
 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 = pltfm_host->priv;
+	struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host);
 	return clk_get_rate(priv->clk);
 }
 
@@ -46,47 +45,35 @@ static int sdhci_sirf_probe(struct platform_device *pdev)
 	struct sdhci_host *host;
 	struct sdhci_pltfm_host *pltfm_host;
 	struct sdhci_sirf_priv *priv;
-	struct pinctrl *pinctrl;
+	struct clk *clk;
+	int gpio_cd;
 	int ret;
 
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl)) {
-		dev_err(&pdev->dev, "unable to get pinmux");
-		return PTR_ERR(pinctrl);
-	}
-
-	priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_sirf_priv),
-		GFP_KERNEL);
-	if (!priv) {
-		dev_err(&pdev->dev, "unable to allocate private data");
-		return -ENOMEM;
-	}
-
-	priv->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(priv->clk)) {
+	clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
 		dev_err(&pdev->dev, "unable to get clock");
-		return PTR_ERR(priv->clk);
+		return PTR_ERR(clk);
 	}
 
-	if (pdev->dev.of_node) {
-		priv->gpio_cd = of_get_named_gpio(pdev->dev.of_node,
-			"cd-gpios", 0);
-	} else {
-		priv->gpio_cd = -EINVAL;
-	}
+	if (pdev->dev.of_node)
+		gpio_cd = of_get_named_gpio(pdev->dev.of_node, "cd-gpios", 0);
+	else
+		gpio_cd = -EINVAL;
 
-	host = sdhci_pltfm_init(pdev, &sdhci_sirf_pdata);
-	if (IS_ERR(host)) {
-		ret = PTR_ERR(host);
-		goto err_sdhci_pltfm_init;
-	}
+	host = sdhci_pltfm_init(pdev, &sdhci_sirf_pdata, sizeof(struct sdhci_sirf_priv));
+	if (IS_ERR(host))
+		return PTR_ERR(host);
 
 	pltfm_host = sdhci_priv(host);
-	pltfm_host->priv = priv;
+	priv = sdhci_pltfm_priv(pltfm_host);
+	priv->clk = clk;
+	priv->gpio_cd = gpio_cd;
 
 	sdhci_get_of_property(pdev);
 
-	clk_prepare_enable(priv->clk);
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		goto err_clk_prepare;
 
 	ret = sdhci_add_host(host);
 	if (ret)
@@ -111,8 +98,8 @@ err_request_cd:
 	sdhci_remove_host(host, 0);
 err_sdhci_add:
 	clk_disable_unprepare(priv->clk);
+err_clk_prepare:
 	sdhci_pltfm_free(pdev);
-err_sdhci_pltfm_init:
 	return ret;
 }
 
@@ -120,7 +107,7 @@ 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 = pltfm_host->priv;
+	struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host);
 
 	sdhci_pltfm_unregister(pdev);
 
@@ -136,7 +123,7 @@ 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 = pltfm_host->priv;
+	struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host);
 	int ret;
 
 	ret = sdhci_suspend_host(host);
@@ -152,7 +139,7 @@ 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 = pltfm_host->priv;
+	struct sdhci_sirf_priv *priv = sdhci_pltfm_priv(pltfm_host);
 	int ret;
 
 	ret = clk_enable(priv->clk);

drivers/mmc/host/sdhci-spear.c

@@ -258,7 +258,6 @@ static int sdhci_probe(struct platform_device *pdev)
 	return 0;
 
 set_drvdata:
-	platform_set_drvdata(pdev, NULL);
 	sdhci_remove_host(host, 1);
 free_host:
 	sdhci_free_host(host);
@@ -278,7 +277,6 @@ static int sdhci_remove(struct platform_device *pdev)
 	int dead = 0;
 	u32 scratch;
 
-	platform_set_drvdata(pdev, NULL);
 	scratch = readl(host->ioaddr + SDHCI_INT_STATUS);
 	if (scratch == (u32)-1)
 		dead = 1;

drivers/mmc/host/sdhci-tegra.c

@@ -205,7 +205,7 @@ static const struct of_device_id sdhci_tegra_dt_match[] = {
 };
 MODULE_DEVICE_TABLE(of, sdhci_tegra_dt_match);
 
-static void sdhci_tegra_parse_dt(struct device *dev)
+static int sdhci_tegra_parse_dt(struct device *dev)
 {
 	struct device_node *np = dev->of_node;
 	struct sdhci_host *host = dev_get_drvdata(dev);
@@ -213,7 +213,7 @@ static void sdhci_tegra_parse_dt(struct device *dev)
 	struct sdhci_tegra *tegra_host = pltfm_host->priv;
 
 	tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
-	mmc_of_parse(host->mmc);
+	return mmc_of_parse(host->mmc);
 }
 
 static int sdhci_tegra_probe(struct platform_device *pdev)
@@ -231,7 +231,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 		return -EINVAL;
 	soc_data = match->data;
 
-	host = sdhci_pltfm_init(pdev, soc_data->pdata);
+	host = sdhci_pltfm_init(pdev, soc_data->pdata, 0);
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 	pltfm_host = sdhci_priv(host);
@@ -245,7 +245,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
 	tegra_host->soc_data = soc_data;
 	pltfm_host->priv = tegra_host;
 
-	sdhci_tegra_parse_dt(&pdev->dev);
+	rc = sdhci_tegra_parse_dt(&pdev->dev);
+	if (rc)
+		goto err_parse_dt;
 
 	if (gpio_is_valid(tegra_host->power_gpio)) {
 		rc = gpio_request(tegra_host->power_gpio, "sdhci_power");
@@ -279,6 +281,7 @@ 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:
 	sdhci_pltfm_free(pdev);
 	return rc;

drivers/mmc/host/sdhci.c

@@ -58,6 +58,8 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
 #ifdef CONFIG_PM_RUNTIME
 static int sdhci_runtime_pm_get(struct sdhci_host *host);
 static int sdhci_runtime_pm_put(struct sdhci_host *host);
+static void sdhci_runtime_pm_bus_on(struct sdhci_host *host);
+static void sdhci_runtime_pm_bus_off(struct sdhci_host *host);
 #else
 static inline int sdhci_runtime_pm_get(struct sdhci_host *host)
 {
@@ -67,6 +69,12 @@ static inline int sdhci_runtime_pm_put(struct sdhci_host *host)
 {
 	return 0;
 }
+static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+{
+}
+static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+{
+}
 #endif
 
 static void sdhci_dumpregs(struct sdhci_host *host)
@@ -192,8 +200,12 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 
 	sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
 
-	if (mask & SDHCI_RESET_ALL)
+	if (mask & SDHCI_RESET_ALL) {
 		host->clock = 0;
+		/* Reset-all turns off SD Bus Power */
+		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)
+			sdhci_runtime_pm_bus_off(host);
+	}
 
 	/* Wait max 100 ms */
 	timeout = 100;
@@ -1268,6 +1280,8 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
 
 	if (pwr == 0) {
 		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
+		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)
+			sdhci_runtime_pm_bus_off(host);
 		return 0;
 	}
 
@@ -1289,6 +1303,9 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
 
 	sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
 
+	if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)
+		sdhci_runtime_pm_bus_on(host);
+
 	/*
 	 * Some controllers need an extra 10ms delay of 10ms before they
 	 * can apply clock after applying power
@@ -1526,16 +1543,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 			ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 			/* Select Bus Speed Mode for host */
 			ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
-			if (ios->timing == MMC_TIMING_MMC_HS200)
-				ctrl_2 |= SDHCI_CTRL_HS_SDR200;
+			if ((ios->timing == MMC_TIMING_MMC_HS200) ||
+			    (ios->timing == MMC_TIMING_UHS_SDR104))
+				ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
 			else if (ios->timing == MMC_TIMING_UHS_SDR12)
 				ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
 			else if (ios->timing == MMC_TIMING_UHS_SDR25)
 				ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
 			else if (ios->timing == MMC_TIMING_UHS_SDR50)
 				ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
-			else if (ios->timing == MMC_TIMING_UHS_SDR104)
-				ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
 			else if (ios->timing == MMC_TIMING_UHS_DDR50)
 				ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
 			sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
@@ -1846,7 +1862,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
 	 */
 	if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) &&
 	    (host->flags & SDHCI_SDR50_NEEDS_TUNING ||
-	     host->flags & SDHCI_HS200_NEEDS_TUNING))
+	     host->flags & SDHCI_SDR104_NEEDS_TUNING))
 		requires_tuning_nonuhs = true;
 
 	if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) ||
@@ -2046,11 +2062,14 @@ static void sdhci_card_event(struct mmc_host *mmc)
 	struct sdhci_host *host = mmc_priv(mmc);
 	unsigned long flags;
 
+	/* First check if client has provided their own card event */
+	if (host->ops->card_event)
+		host->ops->card_event(host);
+
 	spin_lock_irqsave(&host->lock, flags);
 
 	/* Check host->mrq first in case we are runtime suspended */
-	if (host->mrq &&
-	    !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
+	if (host->mrq && !sdhci_do_get_cd(host)) {
 		pr_err("%s: Card removed during transfer!\n",
 			mmc_hostname(host->mmc));
 		pr_err("%s: Resetting controller.\n",
@@ -2625,6 +2644,22 @@ static int sdhci_runtime_pm_put(struct sdhci_host *host)
 	return pm_runtime_put_autosuspend(host->mmc->parent);
 }
 
+static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+{
+	if (host->runtime_suspended || host->bus_on)
+		return;
+	host->bus_on = true;
+	pm_runtime_get_noresume(host->mmc->parent);
+}
+
+static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+{
+	if (host->runtime_suspended || !host->bus_on)
+		return;
+	host->bus_on = false;
+	pm_runtime_put_noidle(host->mmc->parent);
+}
+
 int sdhci_runtime_suspend_host(struct sdhci_host *host)
 {
 	unsigned long flags;
@@ -2962,9 +2997,13 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
 
 	/* SDR104 supports also implies SDR50 support */
-	if (caps[1] & SDHCI_SUPPORT_SDR104)
+	if (caps[1] & SDHCI_SUPPORT_SDR104) {
 		mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;
-	else if (caps[1] & SDHCI_SUPPORT_SDR50)
+		/* SD3.0: SDR104 is supported so (for eMMC) the caps2
+		 * field can be promoted to support HS200.
+		 */
+		mmc->caps2 |= MMC_CAP2_HS200;
+	} else if (caps[1] & SDHCI_SUPPORT_SDR50)
 		mmc->caps |= MMC_CAP_UHS_SDR50;
 
 	if (caps[1] & SDHCI_SUPPORT_DDR50)
@@ -2974,9 +3013,9 @@ int sdhci_add_host(struct sdhci_host *host)
 	if (caps[1] & SDHCI_USE_SDR50_TUNING)
 		host->flags |= SDHCI_SDR50_NEEDS_TUNING;
 
-	/* Does the host need tuning for HS200? */
+	/* Does the host need tuning for SDR104 / HS200? */
 	if (mmc->caps2 & MMC_CAP2_HS200)
-		host->flags |= SDHCI_HS200_NEEDS_TUNING;
+		host->flags |= SDHCI_SDR104_NEEDS_TUNING;
 
 	/* Driver Type(s) (A, C, D) supported by the host */
 	if (caps[1] & SDHCI_DRIVER_TYPE_A)

drivers/mmc/host/sdhci.h

@@ -294,6 +294,7 @@ struct sdhci_ops {
 	void	(*platform_resume)(struct sdhci_host *host);
 	void    (*adma_workaround)(struct sdhci_host *host, u32 intmask);
 	void	(*platform_init)(struct sdhci_host *host);
+	void    (*card_event)(struct sdhci_host *host);
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS

drivers/mmc/host/sh_mmcif.c

@@ -1244,7 +1244,8 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
 	u32 state;
 
 	state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
-	sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
+	sh_mmcif_writel(host->addr, MMCIF_CE_INT,
+			~(state & sh_mmcif_readl(host->addr, MMCIF_CE_INT_MASK)));
 	sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN);
 
 	if (state & ~MASK_CLEAN)
@@ -1369,7 +1370,11 @@ static int sh_mmcif_probe(struct platform_device *pdev)
 		ret = -ENOMEM;
 		goto ealloch;
 	}
-	mmc_of_parse(mmc);
+
+	ret = mmc_of_parse(mmc);
+	if (ret < 0)
+		goto eofparse;
+
 	host		= mmc_priv(mmc);
 	host->mmc	= mmc;
 	host->addr	= reg;
@@ -1464,6 +1469,7 @@ eclkupdate:
 	clk_put(host->hclk);
 eclkget:
 	pm_runtime_disable(&pdev->dev);
+eofparse:
 	mmc_free_host(mmc);
 ealloch:
 	iounmap(reg);
@@ -1501,8 +1507,6 @@ static int sh_mmcif_remove(struct platform_device *pdev)
 	if (irq[1] >= 0)
 		free_irq(irq[1], host);
 
-	platform_set_drvdata(pdev, NULL);
-
 	clk_disable(host->hclk);
 	mmc_free_host(host->mmc);
 	pm_runtime_put_sync(&pdev->dev);

drivers/mmc/host/sh_mobile_sdhi.c

@@ -46,14 +46,12 @@ static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
 struct sh_mobile_sdhi {
 	struct clk *clk;
 	struct tmio_mmc_data mmc_data;
-	struct sh_dmae_slave param_tx;
-	struct sh_dmae_slave param_rx;
 	struct tmio_mmc_dma dma_priv;
 };
 
 static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int *f)
 {
-	struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
+	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 	struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
 	int ret = clk_enable(priv->clk);
@@ -66,7 +64,7 @@ static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int
 
 static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
 {
-	struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
+	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 	struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
 	clk_disable(priv->clk);
@@ -121,7 +119,7 @@ static int sh_mobile_sdhi_write16_hook(struct tmio_mmc_host *host, int addr)
 
 static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev)
 {
-	mmc_detect_change(dev_get_drvdata(&pdev->dev), msecs_to_jiffies(100));
+	mmc_detect_change(platform_get_drvdata(pdev), msecs_to_jiffies(100));
 }
 
 static const struct sh_mobile_sdhi_ops sdhi_ops = {
@@ -146,6 +144,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 	struct tmio_mmc_host *host;
 	int irq, ret, i = 0;
 	bool multiplexed_isr = true;
+	struct tmio_mmc_dma *dma_priv;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
 	if (priv == NULL) {
@@ -154,6 +153,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 	}
 
 	mmc_data = &priv->mmc_data;
+	dma_priv = &priv->dma_priv;
 
 	if (p) {
 		if (p->init) {
@@ -186,15 +186,23 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 			mmc_data->get_cd = sh_mobile_sdhi_get_cd;
 
 		if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
-			priv->param_tx.shdma_slave.slave_id = p->dma_slave_tx;
-			priv->param_rx.shdma_slave.slave_id = p->dma_slave_rx;
-			priv->dma_priv.chan_priv_tx = &priv->param_tx.shdma_slave;
-			priv->dma_priv.chan_priv_rx = &priv->param_rx.shdma_slave;
-			priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
-			mmc_data->dma = &priv->dma_priv;
+			/*
+			 * Yes, we have to provide slave IDs twice to TMIO:
+			 * once as a filter parameter and once for channel
+			 * configuration as an explicit slave ID
+			 */
+			dma_priv->chan_priv_tx = (void *)p->dma_slave_tx;
+			dma_priv->chan_priv_rx = (void *)p->dma_slave_rx;
+			dma_priv->slave_id_tx = p->dma_slave_tx;
+			dma_priv->slave_id_rx = p->dma_slave_rx;
 		}
 	}
 
+	dma_priv->alignment_shift = 1; /* 2-byte alignment */
+	dma_priv->filter = shdma_chan_filter;
+
+	mmc_data->dma = dma_priv;
+
 	/*
 	 * All SDHI blocks support 2-byte and larger block sizes in 4-bit
 	 * bus width mode.
@@ -265,8 +273,10 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 		}
 
 		/* There must be at least one IRQ source */
-		if (!i)
+		if (!i) {
+			ret = irq;
 			goto eirq;
+		}
 	}
 
 	dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",

drivers/mmc/host/tmio_mmc.c

@@ -112,8 +112,6 @@ static int tmio_mmc_remove(struct platform_device *pdev)
 	const struct mfd_cell *cell = mfd_get_cell(pdev);
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct tmio_mmc_host *host = mmc_priv(mmc);
 		free_irq(platform_get_irq(pdev, 0), host);

drivers/mmc/host/tmio_mmc.h

@@ -40,6 +40,22 @@
 
 struct tmio_mmc_data;
 
+/*
+ * We differentiate between the following 3 power states:
+ * 1. card slot powered off, controller stopped. This is used, when either there
+ *    is no card in the slot, or the card really has to be powered down.
+ * 2. card slot powered on, controller stopped. This is used, when a card is in
+ *    the slot, but no activity is currently taking place. This is a power-
+ *    saving mode with card-state preserved. This state can be entered, e.g.
+ *    when MMC clock-gating is used.
+ * 3. card slot powered on, controller running. This is the actual active state.
+ */
+enum tmio_mmc_power {
+	TMIO_MMC_OFF_STOP,	/* card power off, controller stopped */
+	TMIO_MMC_ON_STOP,	/* card power on, controller stopped */
+	TMIO_MMC_ON_RUN,	/* card power on, controller running */
+};
+
 struct tmio_mmc_host {
 	void __iomem *ctl;
 	unsigned long bus_shift;
@@ -48,8 +64,8 @@ struct tmio_mmc_host {
 	struct mmc_data         *data;
 	struct mmc_host         *mmc;
 
-	/* Controller power state */
-	bool			power;
+	/* Controller and card power state */
+	enum tmio_mmc_power	power;
 
 	/* Callbacks for clock / power control */
 	void (*set_pwr)(struct platform_device *host, int state);
@@ -85,6 +101,7 @@ struct tmio_mmc_host {
 	unsigned long		last_req_ts;
 	struct mutex		ios_lock;	/* protect set_ios() context */
 	bool			native_hotplug;
+	bool			resuming;
 };
 
 int tmio_mmc_host_probe(struct tmio_mmc_host **host,

drivers/mmc/host/tmio_mmc_dma.c

@@ -261,42 +261,62 @@ out:
 	spin_unlock_irq(&host->lock);
 }
 
-/* It might be necessary to make filter MFD specific */
-static bool tmio_mmc_filter(struct dma_chan *chan, void *arg)
-{
-	dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
-	chan->private = arg;
-	return true;
-}
-
 void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata)
 {
 	/* We can only either use DMA for both Tx and Rx or not use it at all */
-	if (!pdata->dma)
+	if (!pdata->dma || (!host->pdev->dev.of_node &&
+		(!pdata->dma->chan_priv_tx || !pdata->dma->chan_priv_rx)))
 		return;
 
 	if (!host->chan_tx && !host->chan_rx) {
+		struct resource *res = platform_get_resource(host->pdev,
+							     IORESOURCE_MEM, 0);
+		struct dma_slave_config cfg = {};
 		dma_cap_mask_t mask;
+		int ret;
+
+		if (!res)
+			return;
 
 		dma_cap_zero(mask);
 		dma_cap_set(DMA_SLAVE, mask);
 
-		host->chan_tx = dma_request_channel(mask, tmio_mmc_filter,
-						    pdata->dma->chan_priv_tx);
+		host->chan_tx = dma_request_slave_channel_compat(mask,
+					pdata->dma->filter, pdata->dma->chan_priv_tx,
+					&host->pdev->dev, "tx");
 		dev_dbg(&host->pdev->dev, "%s: TX: got channel %p\n", __func__,
 			host->chan_tx);
 
 		if (!host->chan_tx)
 			return;
 
-		host->chan_rx = dma_request_channel(mask, tmio_mmc_filter,
-						    pdata->dma->chan_priv_rx);
+		if (pdata->dma->chan_priv_tx)
+			cfg.slave_id = pdata->dma->slave_id_tx;
+		cfg.direction = DMA_MEM_TO_DEV;
+		cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->bus_shift);
+		cfg.src_addr = 0;
+		ret = dmaengine_slave_config(host->chan_tx, &cfg);
+		if (ret < 0)
+			goto ecfgtx;
+
+		host->chan_rx = dma_request_slave_channel_compat(mask,
+					pdata->dma->filter, pdata->dma->chan_priv_rx,
+					&host->pdev->dev, "rx");
 		dev_dbg(&host->pdev->dev, "%s: RX: got channel %p\n", __func__,
 			host->chan_rx);
 
 		if (!host->chan_rx)
 			goto ereqrx;
 
+		if (pdata->dma->chan_priv_rx)
+			cfg.slave_id = pdata->dma->slave_id_rx;
+		cfg.direction = DMA_DEV_TO_MEM;
+		cfg.src_addr = cfg.dst_addr;
+		cfg.dst_addr = 0;
+		ret = dmaengine_slave_config(host->chan_rx, &cfg);
+		if (ret < 0)
+			goto ecfgrx;
+
 		host->bounce_buf = (u8 *)__get_free_page(GFP_KERNEL | GFP_DMA);
 		if (!host->bounce_buf)
 			goto ebouncebuf;
@@ -310,9 +330,11 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
 	return;
 
 ebouncebuf:
+ecfgrx:
 	dma_release_channel(host->chan_rx);
 	host->chan_rx = NULL;
 ereqrx:
+ecfgtx:
 	dma_release_channel(host->chan_tx);
 	host->chan_tx = NULL;
 }

drivers/mmc/host/tmio_mmc_pio.c

@@ -859,32 +859,45 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	 * is kept positive, so no suspending actually takes place.
 	 */
 	if (ios->power_mode == MMC_POWER_ON && ios->clock) {
-		if (!host->power) {
+		if (host->power != TMIO_MMC_ON_RUN) {
 			tmio_mmc_clk_update(mmc);
 			pm_runtime_get_sync(dev);
+			if (host->resuming) {
+				tmio_mmc_reset(host);
+				host->resuming = false;
+			}
 		}
+		if (host->power == TMIO_MMC_OFF_STOP)
+			tmio_mmc_reset(host);
 		tmio_mmc_set_clock(host, ios->clock);
-		if (!host->power) {
+		if (host->power == TMIO_MMC_OFF_STOP)
 			/* power up SD card and the bus */
 			tmio_mmc_power_on(host, ios->vdd);
-			host->power = true;
-		}
+		host->power = TMIO_MMC_ON_RUN;
 		/* start bus clock */
 		tmio_mmc_clk_start(host);
 	} else if (ios->power_mode != MMC_POWER_UP) {
-		if (host->power) {
-			struct tmio_mmc_data *pdata = host->pdata;
-			if (ios->power_mode == MMC_POWER_OFF)
+		struct tmio_mmc_data *pdata = host->pdata;
+		unsigned int old_power = host->power;
+
+		if (old_power != TMIO_MMC_OFF_STOP) {
+			if (ios->power_mode == MMC_POWER_OFF) {
 				tmio_mmc_power_off(host);
+				host->power = TMIO_MMC_OFF_STOP;
+			} else {
+				host->power = TMIO_MMC_ON_STOP;
+			}
+		}
+
+		if (old_power == TMIO_MMC_ON_RUN) {
 			tmio_mmc_clk_stop(host);
-			host->power = false;
 			pm_runtime_put(dev);
 			if (pdata->clk_disable)
 				pdata->clk_disable(host->pdev);
 		}
 	}
 
-	if (host->power) {
+	if (host->power != TMIO_MMC_OFF_STOP) {
 		switch (ios->bus_width) {
 		case MMC_BUS_WIDTH_1:
 			sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
@@ -988,7 +1001,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
 	if (!mmc)
 		return -ENOMEM;
 
-	mmc_of_parse(mmc);
+	ret = mmc_of_parse(mmc);
+	if (ret < 0)
+		goto host_free;
 
 	pdata->dev = &pdev->dev;
 	_host = mmc_priv(mmc);
@@ -1025,7 +1040,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
 				  mmc->caps & MMC_CAP_NONREMOVABLE ||
 				  mmc->slot.cd_irq >= 0);
 
-	_host->power = false;
+	_host->power = TMIO_MMC_OFF_STOP;
 	pm_runtime_enable(&pdev->dev);
 	ret = pm_runtime_resume(&pdev->dev);
 	if (ret < 0)
@@ -1154,10 +1169,10 @@ int tmio_mmc_host_resume(struct device *dev)
 	struct mmc_host *mmc = dev_get_drvdata(dev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 
-	tmio_mmc_reset(host);
 	tmio_mmc_enable_dma(host, true);
 
 	/* The MMC core will perform the complete set up */
+	host->resuming = true;
 	return mmc_resume_host(mmc);
 }
 EXPORT_SYMBOL(tmio_mmc_host_resume);
@@ -1175,7 +1190,6 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
 	struct mmc_host *mmc = dev_get_drvdata(dev);
 	struct tmio_mmc_host *host = mmc_priv(mmc);
 
-	tmio_mmc_reset(host);
 	tmio_mmc_enable_dma(host, true);
 
 	return 0;

drivers/mmc/host/wmt-sdmmc.c

@@ -927,8 +927,6 @@ static int wmt_mci_remove(struct platform_device *pdev)
 
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	dev_info(&pdev->dev, "WMT MCI device removed\n");
 
 	return 0;

include/linux/mfd/tmio.h

@@ -81,10 +81,15 @@ int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
 void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);
 void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
 
+struct dma_chan;
+
 struct tmio_mmc_dma {
 	void *chan_priv_tx;
 	void *chan_priv_rx;
+	int slave_id_tx;
+	int slave_id_rx;
 	int alignment_shift;
+	bool (*filter)(struct dma_chan *chan, void *arg);
 };
 
 struct tmio_mmc_host;

include/linux/mmc/card.h

@@ -94,7 +94,11 @@ struct mmc_ext_csd {
 	u8			raw_ext_csd_structure;	/* 194 */
 	u8			raw_card_type;		/* 196 */
 	u8			out_of_int_time;	/* 198 */
-	u8			raw_s_a_timeout;		/* 217 */
+	u8			raw_pwr_cl_52_195;	/* 200 */
+	u8			raw_pwr_cl_26_195;	/* 201 */
+	u8			raw_pwr_cl_52_360;	/* 202 */
+	u8			raw_pwr_cl_26_360;	/* 203 */
+	u8			raw_s_a_timeout;	/* 217 */
 	u8			raw_hc_erase_gap_size;	/* 221 */
 	u8			raw_erase_timeout_mult;	/* 223 */
 	u8			raw_hc_erase_grp_size;	/* 224 */
@@ -102,6 +106,10 @@ struct mmc_ext_csd {
 	u8			raw_sec_erase_mult;	/* 230 */
 	u8			raw_sec_feature_support;/* 231 */
 	u8			raw_trim_mult;		/* 232 */
+	u8			raw_pwr_cl_200_195;	/* 236 */
+	u8			raw_pwr_cl_200_360;	/* 237 */
+	u8			raw_pwr_cl_ddr_52_195;	/* 238 */
+	u8			raw_pwr_cl_ddr_52_360;	/* 239 */
 	u8			raw_bkops_status;	/* 246 */
 	u8			raw_sectors[4];		/* 212 - 4 bytes */
 
@@ -512,6 +520,7 @@ struct mmc_driver {
 	void (*remove)(struct mmc_card *);
 	int (*suspend)(struct mmc_card *);
 	int (*resume)(struct mmc_card *);
+	void (*shutdown)(struct mmc_card *);
 };
 
 extern int mmc_register_driver(struct mmc_driver *);

include/linux/mmc/core.h

@@ -96,6 +96,8 @@ struct mmc_command {
  */
 
 	unsigned int		cmd_timeout_ms;	/* in milliseconds */
+	/* Set this flag only for blocking sanitize request */
+	bool			sanitize_busy;
 
 	struct mmc_data		*data;		/* data segment associated with cmd */
 	struct mmc_request	*mrq;		/* associated request */
@@ -188,6 +190,9 @@ extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
 extern void mmc_release_host(struct mmc_host *host);
 extern int mmc_try_claim_host(struct mmc_host *host);
 
+extern void mmc_get_card(struct mmc_card *card);
+extern void mmc_put_card(struct mmc_card *card);
+
 extern int mmc_flush_cache(struct mmc_card *);
 
 extern int mmc_detect_card_removed(struct mmc_host *host);

include/linux/mmc/host.h

@@ -239,7 +239,7 @@ struct mmc_host {
 #define MMC_CAP_SPI		(1 << 4)	/* Talks only SPI protocols */
 #define MMC_CAP_NEEDS_POLL	(1 << 5)	/* Needs polling for card-detection */
 #define MMC_CAP_8_BIT_DATA	(1 << 6)	/* Can the host do 8 bit transfers */
-
+#define MMC_CAP_AGGRESSIVE_PM	(1 << 7)	/* Suspend (e)MMC/SD at idle  */
 #define MMC_CAP_NONREMOVABLE	(1 << 8)	/* Nonremovable e.g. eMMC */
 #define MMC_CAP_WAIT_WHILE_BUSY	(1 << 9)	/* Waits while card is busy */
 #define MMC_CAP_ERASE		(1 << 10)	/* Allow erase/trim commands */
@@ -264,7 +264,7 @@ struct mmc_host {
 
 #define MMC_CAP2_BOOTPART_NOACC	(1 << 0)	/* Boot partition no access */
 #define MMC_CAP2_CACHE_CTRL	(1 << 1)	/* Allow cache control */
-#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2)	/* Notify poweroff supported */
+#define MMC_CAP2_FULL_PWR_CYCLE	(1 << 2)	/* Can do full power cycle */
 #define MMC_CAP2_NO_MULTI_READ	(1 << 3)	/* Multiblock reads don't work */
 #define MMC_CAP2_NO_SLEEP_CMD	(1 << 4)	/* Don't allow sleep command */
 #define MMC_CAP2_HS200_1_8V_SDR	(1 << 5)        /* can support */
@@ -272,7 +272,6 @@ struct mmc_host {
 #define MMC_CAP2_HS200		(MMC_CAP2_HS200_1_8V_SDR | \
 				 MMC_CAP2_HS200_1_2V_SDR)
 #define MMC_CAP2_BROKEN_VOLTAGE	(1 << 7)	/* Use the broken voltage */
-#define MMC_CAP2_DETECT_ON_ERR	(1 << 8)	/* On I/O err check card removal */
 #define MMC_CAP2_HC_ERASE_SZ	(1 << 9)	/* High-capacity erase size */
 #define MMC_CAP2_CD_ACTIVE_HIGH	(1 << 10)	/* Card-detect signal active high */
 #define MMC_CAP2_RO_ACTIVE_HIGH	(1 << 11)	/* Write-protect signal active high */
@@ -281,6 +280,7 @@ struct mmc_host {
 #define MMC_CAP2_PACKED_CMD	(MMC_CAP2_PACKED_RD | \
 				 MMC_CAP2_PACKED_WR)
 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14)	/* Don't power up before scan */
+#define MMC_CAP2_SANITIZE	(1 << 15)		/* Support Sanitize */
 
 	mmc_pm_flag_t		pm_caps;	/* supported pm features */
 
@@ -369,7 +369,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *);
 int mmc_add_host(struct mmc_host *);
 void mmc_remove_host(struct mmc_host *);
 void mmc_free_host(struct mmc_host *);
-void mmc_of_parse(struct mmc_host *host);
+int mmc_of_parse(struct mmc_host *host);
 
 static inline void *mmc_priv(struct mmc_host *host)
 {
@@ -425,10 +425,6 @@ static inline int mmc_regulator_get_supply(struct mmc_host *mmc)
 }
 #endif
 
-int mmc_card_awake(struct mmc_host *host);
-int mmc_card_sleep(struct mmc_host *host);
-int mmc_card_can_sleep(struct mmc_host *host);
-
 int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *);
 
 /* Module parameter */

include/linux/mmc/sdhci.h

@@ -95,6 +95,9 @@ struct sdhci_host {
 /* 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)
 
 	int irq;		/* Device IRQ */
 	void __iomem *ioaddr;	/* Mapped address */
@@ -126,7 +129,7 @@ struct sdhci_host {
 #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_HS200_NEEDS_TUNING (1<<10)	/* HS200 needs tuning */
+#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 */
 
 	unsigned int version;	/* SDHCI spec. version */
@@ -139,6 +142,7 @@ struct sdhci_host {
 	u8 pwr;			/* Current voltage */
 
 	bool runtime_suspended;	/* Host is runtime suspended */
+	bool bus_on;		/* Bus power prevents runtime suspend */
 
 	struct mmc_request *mrq;	/* Current request */
 	struct mmc_command *cmd;	/* Current command */

include/linux/platform_data/mmc-esdhc-imx.h

@@ -40,5 +40,6 @@ struct esdhc_platform_data {
 	enum wp_types wp_type;
 	enum cd_types cd_type;
 	int max_bus_width;
+	unsigned int f_max;
 };
 #endif /* __ASM_ARCH_IMX_ESDHC_H */