1 files changed, 247 insertions, 201 deletions

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 6f0bfc0c8c9..51bbba486f3 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -53,6 +53,7 @@ static void sdhci_send_command(struct sdhci_host *, struct mmc_command *);
 static void sdhci_finish_command(struct sdhci_host *);
 static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
 static void sdhci_tuning_timer(unsigned long data);
+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);
@@ -1082,6 +1083,37 @@ static void sdhci_finish_command(struct sdhci_host *host)
 	}
 }
 
+static u16 sdhci_get_preset_value(struct sdhci_host *host)
+{
+	u16 ctrl, preset = 0;
+
+	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+
+	switch (ctrl & SDHCI_CTRL_UHS_MASK) {
+	case SDHCI_CTRL_UHS_SDR12:
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12);
+		break;
+	case SDHCI_CTRL_UHS_SDR25:
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25);
+		break;
+	case SDHCI_CTRL_UHS_SDR50:
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50);
+		break;
+	case SDHCI_CTRL_UHS_SDR104:
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);
+		break;
+	case SDHCI_CTRL_UHS_DDR50:
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);
+		break;
+	default:
+		pr_warn("%s: Invalid UHS-I mode selected\n",
+			mmc_hostname(host->mmc));
+		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12);
+		break;
+	}
+	return preset;
+}
+
 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	int div = 0; /* Initialized for compiler warning */
@@ -1106,35 +1138,43 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 		goto out;
 
 	if (host->version >= SDHCI_SPEC_300) {
+		if (sdhci_readw(host, SDHCI_HOST_CONTROL2) &
+			SDHCI_CTRL_PRESET_VAL_ENABLE) {
+			u16 pre_val;
+
+			clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+			pre_val = sdhci_get_preset_value(host);
+			div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK)
+				>> SDHCI_PRESET_SDCLK_FREQ_SHIFT;
+			if (host->clk_mul &&
+				(pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) {
+				clk = SDHCI_PROG_CLOCK_MODE;
+				real_div = div + 1;
+				clk_mul = host->clk_mul;
+			} else {
+				real_div = max_t(int, 1, div << 1);
+			}
+			goto clock_set;
+		}
+
 		/*
 		 * Check if the Host Controller supports Programmable Clock
 		 * Mode.
 		 */
 		if (host->clk_mul) {
-			u16 ctrl;
-
+			for (div = 1; div <= 1024; div++) {
+				if ((host->max_clk * host->clk_mul / div)
+					<= clock)
+					break;
+			}
 			/*
-			 * We need to figure out whether the Host Driver needs
-			 * to select Programmable Clock Mode, or the value can
-			 * be set automatically by the Host Controller based on
-			 * the Preset Value registers.
+			 * Set Programmable Clock Mode in the Clock
+			 * Control register.
 			 */
-			ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
-			if (!(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) {
-				for (div = 1; div <= 1024; div++) {
-					if (((host->max_clk * host->clk_mul) /
-					      div) <= clock)
-						break;
-				}
-				/*
-				 * Set Programmable Clock Mode in the Clock
-				 * Control register.
-				 */
-				clk = SDHCI_PROG_CLOCK_MODE;
-				real_div = div;
-				clk_mul = host->clk_mul;
-				div--;
-			}
+			clk = SDHCI_PROG_CLOCK_MODE;
+			real_div = div;
+			clk_mul = host->clk_mul;
+			div--;
 		} else {
 			/* Version 3.00 divisors must be a multiple of 2. */
 			if (host->max_clk <= clock)
@@ -1159,6 +1199,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 		div >>= 1;
 	}
 
+clock_set:
 	if (real_div)
 		host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
 
@@ -1189,6 +1230,15 @@ out:
 	host->clock = clock;
 }
 
+static inline void sdhci_update_clock(struct sdhci_host *host)
+{
+	unsigned int clock;
+
+	clock = host->clock;
+	host->clock = 0;
+	sdhci_set_clock(host, clock);
+}
+
 static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
 {
 	u8 pwr = 0;
@@ -1258,7 +1308,7 @@ static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
 static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 {
 	struct sdhci_host *host;
-	bool present;
+	int present;
 	unsigned long flags;
 	u32 tuning_opcode;
 
@@ -1287,18 +1337,21 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
 	host->mrq = mrq;
 
-	/* If polling, assume that the card is always present. */
-	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
-		present = true;
-	else
-		present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
-				SDHCI_CARD_PRESENT;
-
-	/* If we're using a cd-gpio, testing the presence bit might fail. */
-	if (!present) {
-		int ret = mmc_gpio_get_cd(host->mmc);
-		if (ret > 0)
-			present = true;
+	/*
+	 * Firstly check card presence from cd-gpio.  The return could
+	 * be one of the following possibilities:
+	 *     negative: cd-gpio is not available
+	 *     zero: cd-gpio is used, and card is removed
+	 *     one: cd-gpio is used, and card is present
+	 */
+	present = mmc_gpio_get_cd(host->mmc);
+	if (present < 0) {
+		/* If polling, assume that the card is always present. */
+		if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+			present = 1;
+		else
+			present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
+					SDHCI_CARD_PRESENT;
 	}
 
 	if (!present || host->flags & SDHCI_DEVICE_DEAD) {
@@ -1364,6 +1417,10 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 		sdhci_reinit(host);
 	}
 
+	if (host->version >= SDHCI_SPEC_300 &&
+		(ios->power_mode == MMC_POWER_UP))
+		sdhci_enable_preset_value(host, false);
+
 	sdhci_set_clock(host, ios->clock);
 
 	if (ios->power_mode == MMC_POWER_OFF)
@@ -1383,11 +1440,11 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 	/*
 	 * If your platform has 8-bit width support but is not a v3 controller,
 	 * or if it requires special setup code, you should implement that in
-	 * platform_8bit_width().
+	 * platform_bus_width().
 	 */
-	if (host->ops->platform_8bit_width)
-		host->ops->platform_8bit_width(host, ios->bus_width);
-	else {
+	if (host->ops->platform_bus_width) {
+		host->ops->platform_bus_width(host, ios->bus_width);
+	} else {
 		ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 		if (ios->bus_width == MMC_BUS_WIDTH_8) {
 			ctrl &= ~SDHCI_CTRL_4BITBUS;
@@ -1415,7 +1472,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 
 	if (host->version >= SDHCI_SPEC_300) {
 		u16 clk, ctrl_2;
-		unsigned int clock;
 
 		/* In case of UHS-I modes, set High Speed Enable */
 		if ((ios->timing == MMC_TIMING_MMC_HS200) ||
@@ -1455,9 +1511,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 			sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 
 			/* Re-enable SD Clock */
-			clock = host->clock;
-			host->clock = 0;
-			sdhci_set_clock(host, clock);
+			sdhci_update_clock(host);
 		}
 
 
@@ -1487,10 +1541,22 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
 			sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
 		}
 
+		if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) &&
+				((ios->timing == MMC_TIMING_UHS_SDR12) ||
+				 (ios->timing == MMC_TIMING_UHS_SDR25) ||
+				 (ios->timing == MMC_TIMING_UHS_SDR50) ||
+				 (ios->timing == MMC_TIMING_UHS_SDR104) ||
+				 (ios->timing == MMC_TIMING_UHS_DDR50))) {
+			u16 preset;
+
+			sdhci_enable_preset_value(host, true);
+			preset = sdhci_get_preset_value(host);
+			ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK)
+				>> SDHCI_PRESET_DRV_SHIFT;
+		}
+
 		/* Re-enable SD Clock */
-		clock = host->clock;
-		host->clock = 0;
-		sdhci_set_clock(host, clock);
+		sdhci_update_clock(host);
 	} else
 		sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 
@@ -1608,141 +1674,91 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 	spin_unlock_irqrestore(&host->lock, flags);
 }
 
-static int sdhci_do_3_3v_signal_voltage_switch(struct sdhci_host *host,
-						u16 ctrl)
+static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
+						struct mmc_ios *ios)
 {
+	u16 ctrl;
 	int ret;
 
-	/* Set 1.8V Signal Enable in the Host Control2 register to 0 */
-	ctrl &= ~SDHCI_CTRL_VDD_180;
-	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
-
-	if (host->vqmmc) {
-		ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
-		if (ret) {
-			pr_warning("%s: Switching to 3.3V signalling voltage "
-				   " failed\n", mmc_hostname(host->mmc));
-			return -EIO;
-		}
-	}
-	/* Wait for 5ms */
-	usleep_range(5000, 5500);
+	/*
+	 * Signal Voltage Switching is only applicable for Host Controllers
+	 * v3.00 and above.
+	 */
+	if (host->version < SDHCI_SPEC_300)
+		return 0;
 
-	/* 3.3V regulator output should be stable within 5 ms */
 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
-	if (!(ctrl & SDHCI_CTRL_VDD_180))
-		return 0;
 
-	pr_warning("%s: 3.3V regulator output did not became stable\n",
-		   mmc_hostname(host->mmc));
+	switch (ios->signal_voltage) {
+	case MMC_SIGNAL_VOLTAGE_330:
+		/* Set 1.8V Signal Enable in the Host Control2 register to 0 */
+		ctrl &= ~SDHCI_CTRL_VDD_180;
+		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
-	return -EIO;
-}
+		if (host->vqmmc) {
+			ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000);
+			if (ret) {
+				pr_warning("%s: Switching to 3.3V signalling voltage "
+						" failed\n", mmc_hostname(host->mmc));
+				return -EIO;
+			}
+		}
+		/* Wait for 5ms */
+		usleep_range(5000, 5500);
 
-static int sdhci_do_1_8v_signal_voltage_switch(struct sdhci_host *host,
-						u16 ctrl)
-{
-	u8 pwr;
-	u16 clk;
-	u32 present_state;
-	int ret;
+		/* 3.3V regulator output should be stable within 5 ms */
+		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+		if (!(ctrl & SDHCI_CTRL_VDD_180))
+			return 0;
 
-	/* Stop SDCLK */
-	clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
-	clk &= ~SDHCI_CLOCK_CARD_EN;
-	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+		pr_warning("%s: 3.3V regulator output did not became stable\n",
+				mmc_hostname(host->mmc));
+
+		return -EAGAIN;
+	case MMC_SIGNAL_VOLTAGE_180:
+		if (host->vqmmc) {
+			ret = regulator_set_voltage(host->vqmmc,
+					1700000, 1950000);
+			if (ret) {
+				pr_warning("%s: Switching to 1.8V signalling voltage "
+						" failed\n", mmc_hostname(host->mmc));
+				return -EIO;
+			}
+		}
 
-	/* Check whether DAT[3:0] is 0000 */
-	present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
-	if (!((present_state & SDHCI_DATA_LVL_MASK) >>
-	       SDHCI_DATA_LVL_SHIFT)) {
 		/*
 		 * Enable 1.8V Signal Enable in the Host Control2
 		 * register
 		 */
-		if (host->vqmmc)
-			ret = regulator_set_voltage(host->vqmmc,
-				1700000, 1950000);
-		else
-			ret = 0;
+		ctrl |= SDHCI_CTRL_VDD_180;
+		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
-		if (!ret) {
-			ctrl |= SDHCI_CTRL_VDD_180;
-			sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+		/* Wait for 5ms */
+		usleep_range(5000, 5500);
 
-			/* Wait for 5ms */
-			usleep_range(5000, 5500);
+		/* 1.8V regulator output should be stable within 5 ms */
+		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+		if (ctrl & SDHCI_CTRL_VDD_180)
+			return 0;
 
-			ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
-			if (ctrl & SDHCI_CTRL_VDD_180) {
-				/* Provide SDCLK again and wait for 1ms */
-				clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
-				clk |= SDHCI_CLOCK_CARD_EN;
-				sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
-				usleep_range(1000, 1500);
+		pr_warning("%s: 1.8V regulator output did not became stable\n",
+				mmc_hostname(host->mmc));
 
-				/*
-				 * If DAT[3:0] level is 1111b, then the card
-				 * was successfully switched to 1.8V signaling.
-				 */
-				present_state = sdhci_readl(host,
-							SDHCI_PRESENT_STATE);
-				if ((present_state & SDHCI_DATA_LVL_MASK) ==
-				     SDHCI_DATA_LVL_MASK)
-					return 0;
+		return -EAGAIN;
+	case MMC_SIGNAL_VOLTAGE_120:
+		if (host->vqmmc) {
+			ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000);
+			if (ret) {
+				pr_warning("%s: Switching to 1.2V signalling voltage "
+						" failed\n", mmc_hostname(host->mmc));
+				return -EIO;
 			}
 		}
-	}
-
-	/*
-	 * If we are here, that means the switch to 1.8V signaling
-	 * failed. We power cycle the card, and retry initialization
-	 * sequence by setting S18R to 0.
-	 */
-	pwr = sdhci_readb(host, SDHCI_POWER_CONTROL);
-	pwr &= ~SDHCI_POWER_ON;
-	sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
-	if (host->vmmc)
-		regulator_disable(host->vmmc);
-
-	/* Wait for 1ms as per the spec */
-	usleep_range(1000, 1500);
-	pwr |= SDHCI_POWER_ON;
-	sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
-	if (host->vmmc)
-		regulator_enable(host->vmmc);
-
-	pr_warning("%s: Switching to 1.8V signalling voltage failed, "
-		   "retrying with S18R set to 0\n", mmc_hostname(host->mmc));
-
-	return -EAGAIN;
-}
-
-static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
-						struct mmc_ios *ios)
-{
-	u16 ctrl;
-
-	/*
-	 * Signal Voltage Switching is only applicable for Host Controllers
-	 * v3.00 and above.
-	 */
-	if (host->version < SDHCI_SPEC_300)
 		return 0;
-
-	/*
-	 * We first check whether the request is to set signalling voltage
-	 * to 3.3V. If so, we change the voltage to 3.3V and return quickly.
-	 */
-	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
-	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330)
-		return sdhci_do_3_3v_signal_voltage_switch(host, ctrl);
-	else if (!(ctrl & SDHCI_CTRL_VDD_180) &&
-			(ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180))
-		return sdhci_do_1_8v_signal_voltage_switch(host, ctrl);
-	else
+	default:
 		/* No signal voltage switch required */
 		return 0;
+	}
 }
 
 static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
@@ -1759,6 +1775,19 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
 	return err;
 }
 
+static int sdhci_card_busy(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	u32 present_state;
+
+	sdhci_runtime_pm_get(host);
+	/* Check whether DAT[3:0] is 0000 */
+	present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
+	sdhci_runtime_pm_put(host);
+
+	return !(present_state & SDHCI_DATA_LVL_MASK);
+}
+
 static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
 {
 	struct sdhci_host *host;
@@ -1955,17 +1984,15 @@ out:
 	return err;
 }
 
-static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable)
+
+static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
 {
 	u16 ctrl;
-	unsigned long flags;
 
 	/* Host Controller v3.00 defines preset value registers */
 	if (host->version < SDHCI_SPEC_300)
 		return;
 
-	spin_lock_irqsave(&host->lock, flags);
-
 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
 
 	/*
@@ -1981,17 +2008,6 @@ static void sdhci_do_enable_preset_value(struct sdhci_host *host, bool enable)
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 		host->flags &= ~SDHCI_PV_ENABLED;
 	}
-
-	spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void sdhci_enable_preset_value(struct mmc_host *mmc, bool enable)
-{
-	struct sdhci_host *host = mmc_priv(mmc);
-
-	sdhci_runtime_pm_get(host);
-	sdhci_do_enable_preset_value(host, enable);
-	sdhci_runtime_pm_put(host);
 }
 
 static void sdhci_card_event(struct mmc_host *mmc)
@@ -2027,8 +2043,8 @@ static const struct mmc_host_ops sdhci_ops = {
 	.enable_sdio_irq = sdhci_enable_sdio_irq,
 	.start_signal_voltage_switch	= sdhci_start_signal_voltage_switch,
 	.execute_tuning			= sdhci_execute_tuning,
-	.enable_preset_value		= sdhci_enable_preset_value,
 	.card_event			= sdhci_card_event,
+	.card_busy	= sdhci_card_busy,
 };
 
 /*****************************************************************************\
@@ -2080,14 +2096,9 @@ static void sdhci_tasklet_finish(unsigned long param)
 		   (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) {
 
 		/* Some controllers need this kick or reset won't work here */
-		if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
-			unsigned int clock;
-
+		if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)
 			/* This is to force an update */
-			clock = host->clock;
-			host->clock = 0;
-			sdhci_set_clock(host, clock);
-		}
+			sdhci_update_clock(host);
 
 		/* Spec says we should do both at the same time, but Ricoh
 		   controllers do not like that. */
@@ -2455,6 +2466,32 @@ out:
 \*****************************************************************************/
 
 #ifdef CONFIG_PM
+void sdhci_enable_irq_wakeups(struct sdhci_host *host)
+{
+	u8 val;
+	u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE
+			| SDHCI_WAKE_ON_INT;
+
+	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
+	val |= mask ;
+	/* Avoid fake wake up */
+	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+		val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE);
+	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
+}
+EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
+
+void sdhci_disable_irq_wakeups(struct sdhci_host *host)
+{
+	u8 val;
+	u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE
+			| SDHCI_WAKE_ON_INT;
+
+	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
+	val &= ~mask;
+	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
+}
+EXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups);
 
 int sdhci_suspend_host(struct sdhci_host *host)
 {
@@ -2484,8 +2521,13 @@ int sdhci_suspend_host(struct sdhci_host *host)
 		return ret;
 	}
 
-	free_irq(host->irq, host);
-
+	if (!device_may_wakeup(mmc_dev(host->mmc))) {
+		sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
+		free_irq(host->irq, host);
+	} else {
+		sdhci_enable_irq_wakeups(host);
+		enable_irq_wake(host->irq);
+	}
 	return ret;
 }
 
@@ -2500,10 +2542,15 @@ int sdhci_resume_host(struct sdhci_host *host)
 			host->ops->enable_dma(host);
 	}
 
-	ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
-			  mmc_hostname(host->mmc), host);
-	if (ret)
-		return ret;
+	if (!device_may_wakeup(mmc_dev(host->mmc))) {
+		ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
+				  mmc_hostname(host->mmc), host);
+		if (ret)
+			return ret;
+	} else {
+		sdhci_disable_irq_wakeups(host);
+		disable_irq_wake(host->irq);
+	}
 
 	if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) &&
 	    (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) {
@@ -2531,17 +2578,6 @@ int sdhci_resume_host(struct sdhci_host *host)
 }
 
 EXPORT_SYMBOL_GPL(sdhci_resume_host);
-
-void sdhci_enable_irq_wakeups(struct sdhci_host *host)
-{
-	u8 val;
-	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
-	val |= SDHCI_WAKE_ON_INT;
-	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
-}
-
-EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
-
 #endif /* CONFIG_PM */
 
 #ifdef CONFIG_PM_RUNTIME
@@ -2600,8 +2636,12 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
 	sdhci_do_set_ios(host, &host->mmc->ios);
 
 	sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
-	if (host_flags & SDHCI_PV_ENABLED)
-		sdhci_do_enable_preset_value(host, true);
+	if ((host_flags & SDHCI_PV_ENABLED) &&
+		!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
+		spin_lock_irqsave(&host->lock, flags);
+		sdhci_enable_preset_value(host, true);
+		spin_unlock_irqrestore(&host->lock, flags);
+	}
 
 	/* Set the re-tuning expiration flag */
 	if (host->flags & SDHCI_USING_RETUNING_TIMER)
@@ -2936,7 +2976,11 @@ int sdhci_add_host(struct sdhci_host *host)
 	}
 
 #ifdef CONFIG_REGULATOR
-	if (host->vmmc) {
+	/*
+	 * Voltage range check makes sense only if regulator reports
+	 * any voltage value.
+	 */
+	if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) {
 		ret = regulator_is_supported_voltage(host->vmmc, 2700000,
 			3600000);
 		if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
@@ -3139,6 +3183,7 @@ int sdhci_add_host(struct sdhci_host *host)
 #ifdef SDHCI_USE_LEDS_CLASS
 reset:
 	sdhci_reset(host, SDHCI_RESET_ALL);
+	sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
 	free_irq(host->irq, host);
 #endif
 untasklet:
@@ -3181,6 +3226,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
 	if (!dead)
 		sdhci_reset(host, SDHCI_RESET_ALL);
 
+	sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
 	free_irq(host->irq, host);
 
 	del_timer_sync(&host->timer);