MMC core:

- Update MAINTAINERS as the mmc tree moved to kernel.org
  - A few fixes for HS400es mode
  - A few other minor fixes
 
 MMC host:
  - sdhci: Fix an issue when dealing with stop commands
  - sdhci-pci: Fix a bus power failure issue
  - sdhci-esdhc-imx: Correct two register accesses
  - sdhci-of-arasan: Fix the 1.8V I/O signal switch behaviour
  - rtsx_usb_sdmmc: Fix runtime PM issues
 
 Other: (Because of no maintainer)
  - memstick: rtsx_usb_ms: Fix runtime PM issues
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Merge tag 'mmc-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.9 rc2.

  This time I have also included a few changes for a memstick driver
  which has a corresponding mmc driver. They use the same USB device as
  parent, hence both needs to play nice with runtime PM, which they
  didn't.

  MMC core:
   - Update MAINTAINERS as the mmc tree moved to kernel.org
   - A few fixes for HS400es mode
   - A few other minor fixes

  MMC host:
   - sdhci: Fix an issue when dealing with stop commands
   - sdhci-pci: Fix a bus power failure issue
   - sdhci-esdhc-imx: Correct two register accesses
   - sdhci-of-arasan: Fix the 1.8V I/O signal switch behaviour
   - rtsx_usb_sdmmc: Fix runtime PM issues

  Other: (Because of no maintainer)
   - memstick: rtsx_usb_ms: Fix runtime PM issues"

* tag 'mmc-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  MAINTAINERS: mmc: Move the mmc tree to kernel.org
  memstick: rtsx_usb_ms: Manage runtime PM when accessing the device
  memstick: rtsx_usb_ms: Runtime resume the device when polling for cards
  mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led
  mmc: rtsx_usb_sdmmc: Avoid keeping the device runtime resumed when unused
  mmc: sdhci: cast unsigned int to unsigned long long to avoid unexpeted error
  mmc: sdhci-esdhc-imx: Correct two register accesses
  mmc: sdhci-pci: Fix bus power failing to enable for some Intel controllers
  mmc: sdhci-pci: Let devices define their own sdhci_ops
  mmc: sdhci: Rename sdhci_set_power() to sdhci_set_power_noreg()
  mmc: sdhci: Fix SDHCI_QUIRK2_STOP_WITH_TC
  mmc: core: Annotate cmd_hdr as __le32
  mmc: sdhci-of-arasan: add sdhci_arasan_voltage_switch for arasan, 5.1
  mmc: core: changes frequency to hs_max_dtr when selecting hs400es
  mmc: core: switch to 1V8 or 1V2 for hs400es mode
  mmc: block: add missing header dependencies
  mmc: sdhci-of-arasan: Fix non static symbol warning

MAINTAINERS

@@ -8212,7 +8212,7 @@ F:	include/linux/mfd/
 MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
 M:	Ulf Hansson <ulf.hansson@linaro.org>
 L:	linux-mmc@vger.kernel.org
-T:	git git://git.linaro.org/people/ulf.hansson/mmc.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
 S:	Maintained
 F:	Documentation/devicetree/bindings/mmc/
 F:	drivers/mmc/

drivers/memstick/host/rtsx_usb_ms.c

@@ -524,6 +524,7 @@ static void rtsx_usb_ms_handle_req(struct work_struct *work)
 	int rc;
 
 	if (!host->req) {
+		pm_runtime_get_sync(ms_dev(host));
 		do {
 			rc = memstick_next_req(msh, &host->req);
 			dev_dbg(ms_dev(host), "next req %d\n", rc);
@@ -544,6 +545,7 @@ static void rtsx_usb_ms_handle_req(struct work_struct *work)
 						host->req->error);
 			}
 		} while (!rc);
+		pm_runtime_put(ms_dev(host));
 	}
 
 }
@@ -570,6 +572,7 @@ static int rtsx_usb_ms_set_param(struct memstick_host *msh,
 	dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n",
 			__func__, param, value);
 
+	pm_runtime_get_sync(ms_dev(host));
 	mutex_lock(&ucr->dev_mutex);
 
 	err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_MS_CARD);
@@ -635,6 +638,7 @@ static int rtsx_usb_ms_set_param(struct memstick_host *msh,
 	}
 out:
 	mutex_unlock(&ucr->dev_mutex);
+	pm_runtime_put(ms_dev(host));
 
 	/* power-on delay */
 	if (param == MEMSTICK_POWER && value == MEMSTICK_POWER_ON)
@@ -681,6 +685,7 @@ static int rtsx_usb_detect_ms_card(void *__host)
 	int err;
 
 	for (;;) {
+		pm_runtime_get_sync(ms_dev(host));
 		mutex_lock(&ucr->dev_mutex);
 
 		/* Check pending MS card changes */
@@ -703,6 +708,7 @@ static int rtsx_usb_detect_ms_card(void *__host)
 		}
 
 poll_again:
+		pm_runtime_put(ms_dev(host));
 		if (host->eject)
 			break;
 

drivers/mmc/card/block.c

@@ -46,6 +46,7 @@
 #include <asm/uaccess.h>
 
 #include "queue.h"
+#include "block.h"
 
 MODULE_ALIAS("mmc:block");
 #ifdef MODULE_PARAM_PREFIX
@@ -1786,7 +1787,7 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_packed *packed = mqrq->packed;
 	bool do_rel_wr, do_data_tag;
-	u32 *packed_cmd_hdr;
+	__le32 *packed_cmd_hdr;
 	u8 hdr_blocks;
 	u8 i = 1;
 

drivers/mmc/card/queue.h

@@ -31,7 +31,7 @@ enum mmc_packed_type {
 
 struct mmc_packed {
 	struct list_head	list;
-	u32			cmd_hdr[1024];
+	__le32			cmd_hdr[1024];
 	unsigned int		blocks;
 	u8			nr_entries;
 	u8			retries;

drivers/mmc/core/mmc.c

@@ -1263,6 +1263,16 @@ static int mmc_select_hs400es(struct mmc_card *card)
 		goto out_err;
 	}
 
+	if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V)
+		err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
+
+	if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V)
+		err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
+
+	/* If fails try again during next card power cycle */
+	if (err)
+		goto out_err;
+
 	err = mmc_select_bus_width(card);
 	if (err < 0)
 		goto out_err;
@@ -1272,6 +1282,8 @@ static int mmc_select_hs400es(struct mmc_card *card)
 	if (err)
 		goto out_err;
 
+	mmc_set_clock(host, card->ext_csd.hs_max_dtr);
+
 	err = mmc_switch_status(card);
 	if (err)
 		goto out_err;

drivers/mmc/host/rtsx_usb_sdmmc.c

@@ -1138,11 +1138,6 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	dev_dbg(sdmmc_dev(host), "%s\n", __func__);
 	mutex_lock(&ucr->dev_mutex);
 
-	if (rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD)) {
-		mutex_unlock(&ucr->dev_mutex);
-		return;
-	}
-
 	sd_set_power_mode(host, ios->power_mode);
 	sd_set_bus_width(host, ios->bus_width);
 	sd_set_timing(host, ios->timing, &host->ddr_mode);
@@ -1314,6 +1309,7 @@ static void rtsx_usb_update_led(struct work_struct *work)
 		container_of(work, struct rtsx_usb_sdmmc, led_work);
 	struct rtsx_ucr *ucr = host->ucr;
 
+	pm_runtime_get_sync(sdmmc_dev(host));
 	mutex_lock(&ucr->dev_mutex);
 
 	if (host->led.brightness == LED_OFF)
@@ -1322,6 +1318,7 @@ static void rtsx_usb_update_led(struct work_struct *work)
 		rtsx_usb_turn_on_led(ucr);
 
 	mutex_unlock(&ucr->dev_mutex);
+	pm_runtime_put(sdmmc_dev(host));
 }
 #endif
 

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

@@ -346,7 +346,8 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg)
 	struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
 	u32 data;
 
-	if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) {
+	if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE ||
+			reg == SDHCI_INT_STATUS)) {
 		if ((val & SDHCI_INT_CARD_INT) && !esdhc_is_usdhc(imx_data)) {
 			/*
 			 * Clear and then set D3CD bit to avoid missing the
@@ -555,6 +556,25 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
 	esdhc_clrset_le(host, 0xffff, val, reg);
 }
 
+static u8 esdhc_readb_le(struct sdhci_host *host, int reg)
+{
+	u8 ret;
+	u32 val;
+
+	switch (reg) {
+	case SDHCI_HOST_CONTROL:
+		val = readl(host->ioaddr + reg);
+
+		ret = val & SDHCI_CTRL_LED;
+		ret |= (val >> 5) & SDHCI_CTRL_DMA_MASK;
+		ret |= (val & ESDHC_CTRL_4BITBUS);
+		ret |= (val & ESDHC_CTRL_8BITBUS) << 3;
+		return ret;
+	}
+
+	return readb(host->ioaddr + reg);
+}
+
 static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -947,6 +967,7 @@ static void esdhc_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
 static struct sdhci_ops sdhci_esdhc_ops = {
 	.read_l = esdhc_readl_le,
 	.read_w = esdhc_readw_le,
+	.read_b = esdhc_readb_le,
 	.write_l = esdhc_writel_le,
 	.write_w = esdhc_writew_le,
 	.write_b = esdhc_writeb_le,

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

@@ -250,7 +250,7 @@ static void sdhci_arasan_hs400_enhanced_strobe(struct mmc_host *mmc,
 	writel(vendor, host->ioaddr + SDHCI_ARASAN_VENDOR_REGISTER);
 }
 
-void sdhci_arasan_reset(struct sdhci_host *host, u8 mask)
+static void sdhci_arasan_reset(struct sdhci_host *host, u8 mask)
 {
 	u8 ctrl;
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -265,6 +265,28 @@ void sdhci_arasan_reset(struct sdhci_host *host, u8 mask)
 	}
 }
 
+static int sdhci_arasan_voltage_switch(struct mmc_host *mmc,
+				       struct mmc_ios *ios)
+{
+	switch (ios->signal_voltage) {
+	case MMC_SIGNAL_VOLTAGE_180:
+		/*
+		 * Plese don't switch to 1V8 as arasan,5.1 doesn't
+		 * actually refer to this setting to indicate the
+		 * signal voltage and the state machine will be broken
+		 * actually if we force to enable 1V8. That's something
+		 * like broken quirk but we could work around here.
+		 */
+		return 0;
+	case MMC_SIGNAL_VOLTAGE_330:
+	case MMC_SIGNAL_VOLTAGE_120:
+		/* We don't support 3V3 and 1V2 */
+		break;
+	}
+
+	return -EINVAL;
+}
+
 static struct sdhci_ops sdhci_arasan_ops = {
 	.set_clock = sdhci_arasan_set_clock,
 	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
@@ -661,6 +683,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 
 		host->mmc_host_ops.hs400_enhanced_strobe =
 					sdhci_arasan_hs400_enhanced_strobe;
+		host->mmc_host_ops.start_signal_voltage_switch =
+					sdhci_arasan_voltage_switch;
 	}
 
 	ret = sdhci_add_host(host);

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

@@ -32,6 +32,14 @@
 #include "sdhci-pci.h"
 #include "sdhci-pci-o2micro.h"
 
+static int sdhci_pci_enable_dma(struct sdhci_host *host);
+static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width);
+static void sdhci_pci_hw_reset(struct sdhci_host *host);
+static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
+					   struct mmc_card *card,
+					   unsigned int max_dtr, int host_drv,
+					   int card_drv, int *drv_type);
+
 /*****************************************************************************\
  *                                                                           *
  * Hardware specific quirk handling                                          *
@@ -390,6 +398,45 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
 	return 0;
 }
 
+#define SDHCI_INTEL_PWR_TIMEOUT_CNT	20
+#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY	100
+
+static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
+				  unsigned short vdd)
+{
+	int cntr;
+	u8 reg;
+
+	sdhci_set_power(host, mode, vdd);
+
+	if (mode == MMC_POWER_OFF)
+		return;
+
+	/*
+	 * Bus power might not enable after D3 -> D0 transition due to the
+	 * present state not yet having propagated. Retry for up to 2ms.
+	 */
+	for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
+		reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
+		if (reg & SDHCI_POWER_ON)
+			break;
+		udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
+		reg |= SDHCI_POWER_ON;
+		sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+	}
+}
+
+static const struct sdhci_ops sdhci_intel_byt_ops = {
+	.set_clock		= sdhci_set_clock,
+	.set_power		= sdhci_intel_set_power,
+	.enable_dma		= sdhci_pci_enable_dma,
+	.set_bus_width		= sdhci_pci_set_bus_width,
+	.reset			= sdhci_reset,
+	.set_uhs_signaling	= sdhci_set_uhs_signaling,
+	.hw_reset		= sdhci_pci_hw_reset,
+	.select_drive_strength	= sdhci_pci_select_drive_strength,
+};
+
 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_emmc_probe_slot,
@@ -397,6 +444,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
 	.quirks2	= SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
 			  SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
 			  SDHCI_QUIRK2_STOP_WITH_TC,
+	.ops		= &sdhci_intel_byt_ops,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
@@ -405,6 +453,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
 			SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_sdio_probe_slot,
+	.ops		= &sdhci_intel_byt_ops,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
@@ -415,6 +464,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
 	.allow_runtime_pm = true,
 	.own_cd_for_runtime_pm = true,
 	.probe_slot	= byt_sd_probe_slot,
+	.ops		= &sdhci_intel_byt_ops,
 };
 
 /* Define Host controllers for Intel Merrifield platform */
@@ -1648,7 +1698,9 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
 	}
 
 	host->hw_name = "PCI";
-	host->ops = &sdhci_pci_ops;
+	host->ops = chip->fixes && chip->fixes->ops ?
+		    chip->fixes->ops :
+		    &sdhci_pci_ops;
 	host->quirks = chip->quirks;
 	host->quirks2 = chip->quirks2;
 

drivers/mmc/host/sdhci-pci.h

@@ -65,6 +65,8 @@ struct sdhci_pci_fixes {
 
 	int			(*suspend) (struct sdhci_pci_chip *);
 	int			(*resume) (struct sdhci_pci_chip *);
+
+	const struct sdhci_ops	*ops;
 };
 
 struct sdhci_pci_slot {

drivers/mmc/host/sdhci-pxav3.c

@@ -315,7 +315,7 @@ static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
 	struct mmc_host *mmc = host->mmc;
 	u8 pwr = host->pwr;
 
-	sdhci_set_power(host, mode, vdd);
+	sdhci_set_power_noreg(host, mode, vdd);
 
 	if (host->pwr == pwr)
 		return;

drivers/mmc/host/sdhci.c

@@ -687,7 +687,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
 			 * host->clock is in Hz.  target_timeout is in us.
 			 * Hence, us = 1000000 * cycles / Hz.  Round up.
 			 */
-			val = 1000000 * data->timeout_clks;
+			val = 1000000ULL * data->timeout_clks;
 			if (do_div(val, host->clock))
 				target_timeout++;
 			target_timeout += val;
@@ -1077,6 +1077,10 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 	/* Initially, a command has no error */
 	cmd->error = 0;
 
+	if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&
+	    cmd->opcode == MMC_STOP_TRANSMISSION)
+		cmd->flags |= MMC_RSP_BUSY;
+
 	/* Wait max 10 ms */
 	timeout = 10;
 
@@ -1390,8 +1394,8 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,
 		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
 }
 
-void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
+void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
-		     unsigned short vdd)
+			   unsigned short vdd)
 {
 	u8 pwr = 0;
 
@@ -1455,20 +1459,17 @@ void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
 			mdelay(10);
 	}
 }
-EXPORT_SYMBOL_GPL(sdhci_set_power);
+EXPORT_SYMBOL_GPL(sdhci_set_power_noreg);
 
-static void __sdhci_set_power(struct sdhci_host *host, unsigned char mode,
+void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
-			      unsigned short vdd)
+		     unsigned short vdd)
 {
-	struct mmc_host *mmc = host->mmc;
+	if (IS_ERR(host->mmc->supply.vmmc))
-
+		sdhci_set_power_noreg(host, mode, vdd);
-	if (host->ops->set_power)
-		host->ops->set_power(host, mode, vdd);
-	else if (!IS_ERR(mmc->supply.vmmc))
-		sdhci_set_power_reg(host, mode, vdd);
 	else
-		sdhci_set_power(host, mode, vdd);
+		sdhci_set_power_reg(host, mode, vdd);
 }
+EXPORT_SYMBOL_GPL(sdhci_set_power);
 
 /*****************************************************************************\
  *                                                                           *
@@ -1609,7 +1610,10 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		}
 	}
 
-	__sdhci_set_power(host, ios->power_mode, ios->vdd);
+	if (host->ops->set_power)
+		host->ops->set_power(host, ios->power_mode, ios->vdd);
+	else
+		sdhci_set_power(host, ios->power_mode, ios->vdd);
 
 	if (host->ops->platform_send_init_74_clocks)
 		host->ops->platform_send_init_74_clocks(host, ios->power_mode);
@@ -2409,7 +2413,7 @@ static void sdhci_timeout_data_timer(unsigned long data)
  *                                                                           *
 \*****************************************************************************/
 
-static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask)
+static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
 {
 	if (!host->cmd) {
 		/*
@@ -2453,11 +2457,6 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask)
 		return;
 	}
 
-	if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&
-	    !(host->cmd->flags & MMC_RSP_BUSY) && !host->data &&
-	    host->cmd->opcode == MMC_STOP_TRANSMISSION)
-		*mask &= ~SDHCI_INT_DATA_END;
-
 	if (intmask & SDHCI_INT_RESPONSE)
 		sdhci_finish_command(host);
 }
@@ -2680,8 +2679,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 		}
 
 		if (intmask & SDHCI_INT_CMD_MASK)
-			sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK,
+			sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
-				      &intmask);
 
 		if (intmask & SDHCI_INT_DATA_MASK)
 			sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);

drivers/mmc/host/sdhci.h

@@ -683,6 +683,8 @@ u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
 void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
 		     unsigned short vdd);
+void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
+			   unsigned short vdd);
 void sdhci_set_bus_width(struct sdhci_host *host, int width);
 void sdhci_reset(struct sdhci_host *host, u8 mask);
 void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);