18 files changed, 357 insertions, 90 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 5241528f8b90..ce08e0ea7fc1 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -335,7 +335,7 @@ int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
 {
 	int err;
 
-	if (mrq->cmd && mrq->cmd->has_ext_addr)
+	if (mrq->cmd->has_ext_addr)
 		mmc_send_ext_addr(host, mrq->cmd->ext_addr);
 
 	init_completion(&mrq->cmd_completion);
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 6a23be214543..1522fd2b517d 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -11,6 +11,7 @@
 #include <linux/of.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
+#include <linux/string.h>
 #include <linux/pm_runtime.h>
 #include <linux/random.h>
 #include <linux/sysfs.h>
@@ -66,7 +67,7 @@ static int mmc_decode_cid(struct mmc_card *card)
 
 	/*
 	 * The selection of the format here is based upon published
-	 * specs from sandisk and from what people have reported.
+	 * specs from SanDisk and from what people have reported.
 	 */
 	switch (card->csd.mmca_vsn) {
 	case 0: /* MMC v1.0 - v1.2 */
@@ -109,6 +110,9 @@ static int mmc_decode_cid(struct mmc_card *card)
 		return -EINVAL;
 	}
 
+	/* some product names include trailing whitespace */
+	strim(card->cid.prod_name);
+
 	return 0;
 }
 
diff --git a/drivers/mmc/core/pwrseq_simple.c b/drivers/mmc/core/pwrseq_simple.c
index 37cd858df0f4..4b47e6c3b04b 100644
--- a/drivers/mmc/core/pwrseq_simple.c
+++ b/drivers/mmc/core/pwrseq_simple.c
@@ -54,8 +54,7 @@ static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
 		else
 			bitmap_zero(values, nvalues);
 
-		gpiod_set_array_value_cansleep(nvalues, reset_gpios->desc,
-					       reset_gpios->info, values);
+		gpiod_multi_set_value_cansleep(reset_gpios, values);
 
 		bitmap_free(values);
 	}
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index cc757b850e79..8eba697d3d86 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -11,6 +11,7 @@
 #include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
+#include <linux/string.h>
 #include <linux/pm_runtime.h>
 #include <linux/random.h>
 #include <linux/scatterlist.h>
@@ -95,6 +96,9 @@ void mmc_decode_cid(struct mmc_card *card)
 	card->cid.month			= unstuff_bits(resp, 8, 4);
 
 	card->cid.year += 2000; /* SD cards year offset */
+
+	/* some product names may include trailing whitespace */
+	strim(card->cid.prod_name);
 }
 
 /*
diff --git a/drivers/mmc/core/sdio_uart.c b/drivers/mmc/core/sdio_uart.c
index 6b7471dba3bf..7423a601e1e5 100644
--- a/drivers/mmc/core/sdio_uart.c
+++ b/drivers/mmc/core/sdio_uart.c
@@ -471,7 +471,7 @@ static void sdio_uart_check_modem_status(struct sdio_uart_port *port)
 		port->icount.cts++;
 		tty = tty_port_tty_get(&port->port);
 		if (tty && C_CRTSCTS(tty)) {
-			int cts = (status & UART_MSR_CTS);
+			bool cts = status & UART_MSR_CTS;
 			if (tty->hw_stopped) {
 				if (cts) {
 					tty->hw_stopped = false;
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index 12247219e1c2..5fd455816393 100644
--- a/drivers/mmc/core/slot-gpio.c
+++ b/drivers/mmc/core/slot-gpio.c
@@ -159,18 +159,6 @@ int mmc_gpio_set_cd_wake(struct mmc_host *host, bool on)
 }
 EXPORT_SYMBOL(mmc_gpio_set_cd_wake);
 
-/* Register an alternate interrupt service routine for
- * the card-detect GPIO.
- */
-void mmc_gpio_set_cd_isr(struct mmc_host *host, irq_handler_t isr)
-{
-	struct mmc_gpio *ctx = host->slot.handler_priv;
-
-	WARN_ON(ctx->cd_gpio_isr);
-	ctx->cd_gpio_isr = isr;
-}
-EXPORT_SYMBOL(mmc_gpio_set_cd_isr);
-
 /**
  * mmc_gpiod_request_cd - request a gpio descriptor for card-detection
  * @host: mmc host
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 53d32d0f2709..e3548408ca39 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -27,6 +27,8 @@ enum dw_mci_exynos_type {
 	DW_MCI_TYPE_EXYNOS5420_SMU,
 	DW_MCI_TYPE_EXYNOS7,
 	DW_MCI_TYPE_EXYNOS7_SMU,
+	DW_MCI_TYPE_EXYNOS7870,
+	DW_MCI_TYPE_EXYNOS7870_SMU,
 	DW_MCI_TYPE_ARTPEC8,
 };
 
@@ -70,6 +72,12 @@ static struct dw_mci_exynos_compatible {
 		.compatible	= "samsung,exynos7-dw-mshc-smu",
 		.ctrl_type	= DW_MCI_TYPE_EXYNOS7_SMU,
 	}, {
+		.compatible	= "samsung,exynos7870-dw-mshc",
+		.ctrl_type	= DW_MCI_TYPE_EXYNOS7870,
+	}, {
+		.compatible	= "samsung,exynos7870-dw-mshc-smu",
+		.ctrl_type	= DW_MCI_TYPE_EXYNOS7870_SMU,
+	}, {
 		.compatible	= "axis,artpec8-dw-mshc",
 		.ctrl_type	= DW_MCI_TYPE_ARTPEC8,
 	},
@@ -85,6 +93,8 @@ static inline u8 dw_mci_exynos_get_ciu_div(struct dw_mci *host)
 		return EXYNOS4210_FIXED_CIU_CLK_DIV;
 	else if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 			priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		return SDMMC_CLKSEL_GET_DIV(mci_readl(host, CLKSEL64)) + 1;
 	else
@@ -100,7 +110,8 @@ static void dw_mci_exynos_config_smu(struct dw_mci *host)
 	 * set for non-ecryption mode at this time.
 	 */
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU ||
-		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) {
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU) {
 		mci_writel(host, MPSBEGIN0, 0);
 		mci_writel(host, MPSEND0, SDMMC_ENDING_SEC_NR_MAX);
 		mci_writel(host, MPSCTRL0, SDMMC_MPSCTRL_SECURE_WRITE_BIT |
@@ -126,6 +137,12 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
 				DQS_CTRL_GET_RD_DELAY(priv->saved_strobe_ctrl);
 	}
 
+	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU) {
+		/* Quirk needed for certain Exynos SoCs */
+		host->quirks |= DW_MMC_QUIRK_FIFO64_32;
+	}
+
 	if (priv->ctrl_type == DW_MCI_TYPE_ARTPEC8) {
 		/* Quirk needed for the ARTPEC-8 SoC */
 		host->quirks |= DW_MMC_QUIRK_EXTENDED_TMOUT;
@@ -143,6 +160,8 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		clksel = mci_readl(host, CLKSEL64);
 	else
@@ -152,6 +171,8 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		mci_writel(host, CLKSEL64, clksel);
 	else
@@ -222,6 +243,8 @@ static int dw_mci_exynos_resume_noirq(struct device *dev)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		clksel = mci_readl(host, CLKSEL64);
 	else
@@ -230,6 +253,8 @@ static int dw_mci_exynos_resume_noirq(struct device *dev)
 	if (clksel & SDMMC_CLKSEL_WAKEUP_INT) {
 		if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+			priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 			priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 			mci_writel(host, CLKSEL64, clksel);
 		else
@@ -409,6 +434,8 @@ static inline u8 dw_mci_exynos_get_clksmpl(struct dw_mci *host)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL64));
 	else
@@ -422,6 +449,8 @@ static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		clksel = mci_readl(host, CLKSEL64);
 	else
@@ -429,6 +458,8 @@ static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample)
 	clksel = SDMMC_CLKSEL_UP_SAMPLE(clksel, sample);
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		mci_writel(host, CLKSEL64, clksel);
 	else
@@ -443,6 +474,8 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		clksel = mci_readl(host, CLKSEL64);
 	else
@@ -453,6 +486,8 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host)
 
 	if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
 		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+		priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
 		priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
 		mci_writel(host, CLKSEL64, clksel);
 	else
@@ -632,6 +667,10 @@ static const struct of_device_id dw_mci_exynos_match[] = {
 			.data = &exynos_drv_data, },
 	{ .compatible = "samsung,exynos7-dw-mshc-smu",
 			.data = &exynos_drv_data, },
+	{ .compatible = "samsung,exynos7870-dw-mshc",
+			.data = &exynos_drv_data, },
+	{ .compatible = "samsung,exynos7870-dw-mshc-smu",
+			.data = &exynos_drv_data, },
 	{ .compatible = "axis,artpec8-dw-mshc",
 			.data = &artpec_drv_data, },
 	{},
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 3cbda98d08d2..bb596d169420 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1875,8 +1875,7 @@ static void dw_mci_init_fault(struct dw_mci *host)
 {
 	host->fail_data_crc = (struct fault_attr) FAULT_ATTR_INITIALIZER;
 
-	hrtimer_init(&host->fault_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	host->fault_timer.function = dw_mci_fault_timer;
+	hrtimer_setup(&host->fault_timer, dw_mci_fault_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 }
 #else
 static void dw_mci_init_fault(struct dw_mci *host)
@@ -2579,6 +2578,91 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
 	}
 }
 
+static void dw_mci_push_data64_32(struct dw_mci *host, void *buf, int cnt)
+{
+	struct mmc_data *data = host->data;
+	int init_cnt = cnt;
+
+	/* try and push anything in the part_buf */
+	if (unlikely(host->part_buf_count)) {
+		int len = dw_mci_push_part_bytes(host, buf, cnt);
+
+		buf += len;
+		cnt -= len;
+
+		if (host->part_buf_count == 8) {
+			mci_fifo_l_writeq(host->fifo_reg, host->part_buf);
+			host->part_buf_count = 0;
+		}
+	}
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+	if (unlikely((unsigned long)buf & 0x7)) {
+		while (cnt >= 8) {
+			u64 aligned_buf[16];
+			int len = min(cnt & -8, (int)sizeof(aligned_buf));
+			int items = len >> 3;
+			int i;
+			/* memcpy from input buffer into aligned buffer */
+			memcpy(aligned_buf, buf, len);
+			buf += len;
+			cnt -= len;
+			/* push data from aligned buffer into fifo */
+			for (i = 0; i < items; ++i)
+				mci_fifo_l_writeq(host->fifo_reg, aligned_buf[i]);
+		}
+	} else
+#endif
+	{
+		u64 *pdata = buf;
+
+		for (; cnt >= 8; cnt -= 8)
+			mci_fifo_l_writeq(host->fifo_reg, *pdata++);
+		buf = pdata;
+	}
+	/* put anything remaining in the part_buf */
+	if (cnt) {
+		dw_mci_set_part_bytes(host, buf, cnt);
+		/* Push data if we have reached the expected data length */
+		if ((data->bytes_xfered + init_cnt) ==
+		    (data->blksz * data->blocks))
+			mci_fifo_l_writeq(host->fifo_reg, host->part_buf);
+	}
+}
+
+static void dw_mci_pull_data64_32(struct dw_mci *host, void *buf, int cnt)
+{
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+	if (unlikely((unsigned long)buf & 0x7)) {
+		while (cnt >= 8) {
+			/* pull data from fifo into aligned buffer */
+			u64 aligned_buf[16];
+			int len = min(cnt & -8, (int)sizeof(aligned_buf));
+			int items = len >> 3;
+			int i;
+
+			for (i = 0; i < items; ++i)
+				aligned_buf[i] = mci_fifo_l_readq(host->fifo_reg);
+
+			/* memcpy from aligned buffer into output buffer */
+			memcpy(buf, aligned_buf, len);
+			buf += len;
+			cnt -= len;
+		}
+	} else
+#endif
+	{
+		u64 *pdata = buf;
+
+		for (; cnt >= 8; cnt -= 8)
+			*pdata++ = mci_fifo_l_readq(host->fifo_reg);
+		buf = pdata;
+	}
+	if (cnt) {
+		host->part_buf = mci_fifo_l_readq(host->fifo_reg);
+		dw_mci_pull_final_bytes(host, buf, cnt);
+	}
+}
+
 static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt)
 {
 	int len;
@@ -3379,8 +3463,13 @@ int dw_mci_probe(struct dw_mci *host)
 		width = 16;
 		host->data_shift = 1;
 	} else if (i == 2) {
-		host->push_data = dw_mci_push_data64;
-		host->pull_data = dw_mci_pull_data64;
+		if ((host->quirks & DW_MMC_QUIRK_FIFO64_32)) {
+			host->push_data = dw_mci_push_data64_32;
+			host->pull_data = dw_mci_pull_data64_32;
+		} else {
+			host->push_data = dw_mci_push_data64;
+			host->pull_data = dw_mci_pull_data64;
+		}
 		width = 64;
 		host->data_shift = 3;
 	} else {
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 6447b916990d..5463392dc811 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -281,6 +281,8 @@ struct dw_mci_board {
 
 /* Support for longer data read timeout */
 #define DW_MMC_QUIRK_EXTENDED_TMOUT            BIT(0)
+/* Force 32-bit access to the FIFO */
+#define DW_MMC_QUIRK_FIFO64_32                 BIT(1)
 
 #define DW_MMC_240A		0x240a
 #define DW_MMC_280A		0x280a
@@ -472,6 +474,31 @@ struct dw_mci_board {
 #define mci_fifo_writel(__value, __reg)	__raw_writel(__reg, __value)
 #define mci_fifo_writeq(__value, __reg)	__raw_writeq(__reg, __value)
 
+/*
+ * Some dw_mmc devices have 64-bit FIFOs, but expect them to be
+ * accessed using two 32-bit accesses. If such controller is used
+ * with a 64-bit kernel, this has to be done explicitly.
+ */
+static inline u64 mci_fifo_l_readq(void __iomem *addr)
+{
+	u64 ans;
+	u32 proxy[2];
+
+	proxy[0] = mci_fifo_readl(addr);
+	proxy[1] = mci_fifo_readl(addr + 4);
+	memcpy(&ans, proxy, 8);
+	return ans;
+}
+
+static inline void mci_fifo_l_writeq(void __iomem *addr, u64 value)
+{
+	u32 proxy[2];
+
+	memcpy(proxy, &value, 8);
+	mci_fifo_writel(addr, proxy[0]);
+	mci_fifo_writel(addr + 4, proxy[1]);
+}
+
 /* Register access macros */
 #define mci_readl(dev, reg)			\
 	readl_relaxed((dev)->regs + SDMMC_##reg)
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 62252ad4e20d..3cdb2fc44965 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1272,19 +1272,25 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
 	/* Check for some optional GPIO controls */
 	slot->vsd = devm_gpiod_get_index_optional(host->dev, "vsd",
 						  id, GPIOD_OUT_LOW);
-	if (IS_ERR(slot->vsd))
-		return dev_err_probe(host->dev, PTR_ERR(slot->vsd),
+	if (IS_ERR(slot->vsd)) {
+		r = dev_err_probe(host->dev, PTR_ERR(slot->vsd),
 				     "error looking up VSD GPIO\n");
+		goto err_free_host;
+	}
 	slot->vio = devm_gpiod_get_index_optional(host->dev, "vio",
 						  id, GPIOD_OUT_LOW);
-	if (IS_ERR(slot->vio))
-		return dev_err_probe(host->dev, PTR_ERR(slot->vio),
+	if (IS_ERR(slot->vio)) {
+		r = dev_err_probe(host->dev, PTR_ERR(slot->vio),
 				     "error looking up VIO GPIO\n");
+		goto err_free_host;
+	}
 	slot->cover = devm_gpiod_get_index_optional(host->dev, "cover",
 						    id, GPIOD_IN);
-	if (IS_ERR(slot->cover))
-		return dev_err_probe(host->dev, PTR_ERR(slot->cover),
+	if (IS_ERR(slot->cover)) {
+		r = dev_err_probe(host->dev, PTR_ERR(slot->cover),
 				     "error looking up cover switch GPIO\n");
+		goto err_free_host;
+	}
 
 	host->slots[id] = slot;
 
@@ -1344,6 +1350,7 @@ err_remove_slot_name:
 		device_remove_file(&mmc->class_dev, &dev_attr_slot_name);
 err_remove_host:
 	mmc_remove_host(mmc);
+err_free_host:
 	mmc_free_host(mmc);
 	return r;
 }
diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index f12a87442338..291ddb4ad9be 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -95,6 +95,7 @@ struct renesas_sdhi {
 
 	struct reset_control *rstc;
 	struct tmio_mmc_host *host;
+	struct regulator_dev *rdev;
 };
 
 #define host_to_priv(host) \
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index f73b84bae0c4..fa6526be3638 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -32,6 +32,8 @@
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
 #include <linux/regulator/consumer.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
 #include <linux/reset.h>
 #include <linux/sh_dma.h>
 #include <linux/slab.h>
@@ -581,12 +583,24 @@ static void renesas_sdhi_reset(struct tmio_mmc_host *host, bool preserve)
 
 	if (!preserve) {
 		if (priv->rstc) {
+			u32 sd_status;
+			/*
+			 * HW reset might have toggled the regulator state in
+			 * HW which regulator core might be unaware of so save
+			 * and restore the regulator state during HW reset.
+			 */
+			if (priv->rdev)
+				sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+
 			reset_control_reset(priv->rstc);
 			/* Unknown why but without polling reset status, it will hang */
 			read_poll_timeout(reset_control_status, ret, ret == 0, 1, 100,
 					  false, priv->rstc);
 			/* At least SDHI_VER_GEN2_SDR50 needs manual release of reset */
 			sd_ctrl_write16(host, CTL_RESET_SD, 0x0001);
+			if (priv->rdev)
+				sd_ctrl_write32(host, CTL_SD_STATUS, sd_status);
+
 			priv->needs_adjust_hs400 = false;
 			renesas_sdhi_set_clock(host, host->clk_cache);
 
@@ -904,6 +918,102 @@ static void renesas_sdhi_enable_dma(struct tmio_mmc_host *host, bool enable)
 	renesas_sdhi_sdbuf_width(host, enable ? width : 16);
 }
 
+static const unsigned int renesas_sdhi_vqmmc_voltages[] = {
+	3300000, 1800000
+};
+
+static int renesas_sdhi_regulator_disable(struct regulator_dev *rdev)
+{
+	struct tmio_mmc_host *host = rdev_get_drvdata(rdev);
+	u32 sd_status;
+
+	sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+	sd_status &= ~SD_STATUS_PWEN;
+	sd_ctrl_write32(host, CTL_SD_STATUS, sd_status);
+
+	return 0;
+}
+
+static int renesas_sdhi_regulator_enable(struct regulator_dev *rdev)
+{
+	struct tmio_mmc_host *host = rdev_get_drvdata(rdev);
+	u32 sd_status;
+
+	sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+	sd_status |= SD_STATUS_PWEN;
+	sd_ctrl_write32(host, CTL_SD_STATUS, sd_status);
+
+	return 0;
+}
+
+static int renesas_sdhi_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	struct tmio_mmc_host *host = rdev_get_drvdata(rdev);
+	u32 sd_status;
+
+	sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+
+	return (sd_status & SD_STATUS_PWEN) ? 1 : 0;
+}
+
+static int renesas_sdhi_regulator_get_voltage(struct regulator_dev *rdev)
+{
+	struct tmio_mmc_host *host = rdev_get_drvdata(rdev);
+	u32 sd_status;
+
+	sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+
+	return (sd_status & SD_STATUS_IOVS) ? 1800000 : 3300000;
+}
+
+static int renesas_sdhi_regulator_set_voltage(struct regulator_dev *rdev,
+					      int min_uV, int max_uV,
+					      unsigned int *selector)
+{
+	struct tmio_mmc_host *host = rdev_get_drvdata(rdev);
+	u32 sd_status;
+
+	sd_status = sd_ctrl_read32(host, CTL_SD_STATUS);
+	if (min_uV >= 1700000 && max_uV <= 1950000) {
+		sd_status |= SD_STATUS_IOVS;
+		*selector = 1;
+	} else {
+		sd_status &= ~SD_STATUS_IOVS;
+		*selector = 0;
+	}
+	sd_ctrl_write32(host, CTL_SD_STATUS, sd_status);
+
+	return 0;
+}
+
+static int renesas_sdhi_regulator_list_voltage(struct regulator_dev *rdev,
+					       unsigned int selector)
+{
+	if (selector >= ARRAY_SIZE(renesas_sdhi_vqmmc_voltages))
+		return -EINVAL;
+
+	return renesas_sdhi_vqmmc_voltages[selector];
+}
+
+static const struct regulator_ops renesas_sdhi_regulator_voltage_ops = {
+	.enable = renesas_sdhi_regulator_enable,
+	.disable = renesas_sdhi_regulator_disable,
+	.is_enabled = renesas_sdhi_regulator_is_enabled,
+	.list_voltage = renesas_sdhi_regulator_list_voltage,
+	.get_voltage = renesas_sdhi_regulator_get_voltage,
+	.set_voltage = renesas_sdhi_regulator_set_voltage,
+};
+
+static const struct regulator_desc renesas_sdhi_vqmmc_regulator = {
+	.name = "sdhi-vqmmc-regulator",
+	.of_match = of_match_ptr("vqmmc-regulator"),
+	.type = REGULATOR_VOLTAGE,
+	.owner = THIS_MODULE,
+	.ops = &renesas_sdhi_regulator_voltage_ops,
+	.volt_table = renesas_sdhi_vqmmc_voltages,
+	.n_voltages = ARRAY_SIZE(renesas_sdhi_vqmmc_voltages),
+};
+
 int renesas_sdhi_probe(struct platform_device *pdev,
 		       const struct tmio_mmc_dma_ops *dma_ops,
 		       const struct renesas_sdhi_of_data *of_data,
@@ -911,7 +1021,10 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 {
 	struct tmio_mmc_data *mmd = pdev->dev.platform_data;
 	struct tmio_mmc_data *mmc_data;
+	struct regulator_config rcfg = { .dev = &pdev->dev, };
+	struct regulator_dev *rdev;
 	struct renesas_sdhi_dma *dma_priv;
+	struct device *dev = &pdev->dev;
 	struct tmio_mmc_host *host;
 	struct renesas_sdhi *priv;
 	int num_irqs, irq, ret, i;
@@ -1053,6 +1166,24 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 	if (ret)
 		goto efree;
 
+	rcfg.of_node = of_get_child_by_name(dev->of_node, "vqmmc-regulator");
+	if (!of_device_is_available(rcfg.of_node)) {
+		of_node_put(rcfg.of_node);
+		rcfg.of_node = NULL;
+	}
+
+	if (rcfg.of_node) {
+		rcfg.driver_data = priv->host;
+		rdev = devm_regulator_register(dev, &renesas_sdhi_vqmmc_regulator, &rcfg);
+		of_node_put(rcfg.of_node);
+		if (IS_ERR(rdev)) {
+			dev_err(dev, "regulator register failed err=%ld", PTR_ERR(rdev));
+			ret = PTR_ERR(rdev);
+			goto efree;
+		}
+		priv->rdev = rdev;
+	}
+
 	ver = sd_ctrl_read16(host, CTL_VERSION);
 	/* GEN2_SDR104 is first known SDHI to use 32bit block count */
 	if (ver < SDHI_VER_GEN2_SDR104 && mmc_data->max_blk_count > U16_MAX)
diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index 7ea3da45db32..09b9ab15e499 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -328,12 +328,17 @@ static void dwcmshc_request(struct mmc_host *mmc, struct mmc_request *mrq)
 	sdhci_request(mmc, mrq);
 }
 
-static void dwcmshc_phy_1_8v_init(struct sdhci_host *host)
+static void dwcmshc_phy_init(struct sdhci_host *host)
 {
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
+	u32 rxsel = PHY_PAD_RXSEL_3V3;
 	u32 val;
 
+	if (priv->flags & FLAG_IO_FIXED_1V8 ||
+		host->mmc->ios.timing & MMC_SIGNAL_VOLTAGE_180)
+		rxsel = PHY_PAD_RXSEL_1V8;
+
 	/* deassert phy reset & set tx drive strength */
 	val = PHY_CNFG_RSTN_DEASSERT;
 	val |= FIELD_PREP(PHY_CNFG_PAD_SP_MASK, PHY_CNFG_PAD_SP);
@@ -353,7 +358,7 @@ static void dwcmshc_phy_1_8v_init(struct sdhci_host *host)
 	sdhci_writeb(host, val, PHY_SDCLKDL_CNFG_R);
 
 	/* configure phy pads */
-	val = PHY_PAD_RXSEL_1V8;
+	val = rxsel;
 	val |= FIELD_PREP(PHY_PAD_WEAKPULL_MASK, PHY_PAD_WEAKPULL_PULLUP);
 	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_P_MASK, PHY_PAD_TXSLEW_CTRL_P);
 	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
@@ -365,65 +370,22 @@ static void dwcmshc_phy_1_8v_init(struct sdhci_host *host)
 	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
 	sdhci_writew(host, val, PHY_CLKPAD_CNFG_R);
 
-	val = PHY_PAD_RXSEL_1V8;
+	val = rxsel;
 	val |= FIELD_PREP(PHY_PAD_WEAKPULL_MASK, PHY_PAD_WEAKPULL_PULLDOWN);
 	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_P_MASK, PHY_PAD_TXSLEW_CTRL_P);
 	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
 	sdhci_writew(host, val, PHY_STBPAD_CNFG_R);
 
 	/* enable data strobe mode */
-	sdhci_writeb(host, FIELD_PREP(PHY_DLLDL_CNFG_SLV_INPSEL_MASK, PHY_DLLDL_CNFG_SLV_INPSEL),
-		     PHY_DLLDL_CNFG_R);
-
-	/* enable phy dll */
-	sdhci_writeb(host, PHY_DLL_CTRL_ENABLE, PHY_DLL_CTRL_R);
-}
-
-static void dwcmshc_phy_3_3v_init(struct sdhci_host *host)
-{
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
-	u32 val;
-
-	/* deassert phy reset & set tx drive strength */
-	val = PHY_CNFG_RSTN_DEASSERT;
-	val |= FIELD_PREP(PHY_CNFG_PAD_SP_MASK, PHY_CNFG_PAD_SP);
-	val |= FIELD_PREP(PHY_CNFG_PAD_SN_MASK, PHY_CNFG_PAD_SN);
-	sdhci_writel(host, val, PHY_CNFG_R);
-
-	/* disable delay line */
-	sdhci_writeb(host, PHY_SDCLKDL_CNFG_UPDATE, PHY_SDCLKDL_CNFG_R);
-
-	/* set delay line */
-	sdhci_writeb(host, priv->delay_line, PHY_SDCLKDL_DC_R);
-	sdhci_writeb(host, PHY_DLL_CNFG2_JUMPSTEP, PHY_DLL_CNFG2_R);
-
-	/* enable delay lane */
-	val = sdhci_readb(host, PHY_SDCLKDL_CNFG_R);
-	val &= ~(PHY_SDCLKDL_CNFG_UPDATE);
-	sdhci_writeb(host, val, PHY_SDCLKDL_CNFG_R);
+	if (rxsel == PHY_PAD_RXSEL_1V8) {
+		u8 sel = FIELD_PREP(PHY_DLLDL_CNFG_SLV_INPSEL_MASK, PHY_DLLDL_CNFG_SLV_INPSEL);
 
-	/* configure phy pads */
-	val = PHY_PAD_RXSEL_3V3;
-	val |= FIELD_PREP(PHY_PAD_WEAKPULL_MASK, PHY_PAD_WEAKPULL_PULLUP);
-	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_P_MASK, PHY_PAD_TXSLEW_CTRL_P);
-	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
-	sdhci_writew(host, val, PHY_CMDPAD_CNFG_R);
-	sdhci_writew(host, val, PHY_DATAPAD_CNFG_R);
-	sdhci_writew(host, val, PHY_RSTNPAD_CNFG_R);
-
-	val = FIELD_PREP(PHY_PAD_TXSLEW_CTRL_P_MASK, PHY_PAD_TXSLEW_CTRL_P);
-	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
-	sdhci_writew(host, val, PHY_CLKPAD_CNFG_R);
-
-	val = PHY_PAD_RXSEL_3V3;
-	val |= FIELD_PREP(PHY_PAD_WEAKPULL_MASK, PHY_PAD_WEAKPULL_PULLDOWN);
-	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_P_MASK, PHY_PAD_TXSLEW_CTRL_P);
-	val |= FIELD_PREP(PHY_PAD_TXSLEW_CTRL_N_MASK, PHY_PAD_TXSLEW_CTRL_N);
-	sdhci_writew(host, val, PHY_STBPAD_CNFG_R);
+		sdhci_writeb(host, sel, PHY_DLLDL_CNFG_R);
+	}
 
 	/* enable phy dll */
 	sdhci_writeb(host, PHY_DLL_CTRL_ENABLE, PHY_DLL_CTRL_R);
+
 }
 
 static void th1520_sdhci_set_phy(struct sdhci_host *host)
@@ -433,11 +395,7 @@ static void th1520_sdhci_set_phy(struct sdhci_host *host)
 	u32 emmc_caps = MMC_CAP2_NO_SD | MMC_CAP2_NO_SDIO;
 	u16 emmc_ctrl;
 
-	/* Before power on, set PHY configs */
-	if (priv->flags & FLAG_IO_FIXED_1V8)
-		dwcmshc_phy_1_8v_init(host);
-	else
-		dwcmshc_phy_3_3v_init(host);
+	dwcmshc_phy_init(host);
 
 	if ((host->mmc->caps2 & emmc_caps) == emmc_caps) {
 		emmc_ctrl = sdhci_readw(host, priv->vendor_specific_area1 + DWCMSHC_EMMC_CONTROL);
@@ -1163,7 +1121,7 @@ static const struct sdhci_ops sdhci_dwcmshc_th1520_ops = {
 	.get_max_clock		= dwcmshc_get_max_clock,
 	.reset			= th1520_sdhci_reset,
 	.adma_write_desc	= dwcmshc_adma_write_desc,
-	.voltage_switch		= dwcmshc_phy_1_8v_init,
+	.voltage_switch		= dwcmshc_phy_init,
 	.platform_execute_tuning = th1520_execute_tuning,
 };
 
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index 54d795205fb4..26a9a8b5682a 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -1339,8 +1339,8 @@ static int sdhci_omap_probe(struct platform_device *pdev)
 	/* R1B responses is required to properly manage HW busy detection. */
 	mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
 
-	/* Allow card power off and runtime PM for eMMC/SD card devices */
-	mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_AGGRESSIVE_PM;
+	/*  Enable SDIO card power off. */
+	mmc->caps |= MMC_CAP_POWER_OFF_CARD;
 
 	ret = sdhci_setup_host(host);
 	if (ret)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 1f0bd723f011..13a84b9309e0 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -610,8 +610,12 @@ static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
 
 	sdhci_set_power(host, mode, vdd);
 
-	if (mode == MMC_POWER_OFF)
+	if (mode == MMC_POWER_OFF) {
+		if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
+		    slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BYT_SD)
+			usleep_range(15000, 17500);
 		return;
+	}
 
 	/*
 	 * Bus power might not enable after D3 -> D0 transition due to the
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 990723a008ae..3fb56face3d8 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -399,6 +399,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 	if (!IS_ERR(pxa->clk_core))
 		clk_prepare_enable(pxa->clk_core);
 
+	host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
 	/* enable 1/8V DDR capable */
 	host->mmc->caps |= MMC_CAP_1_8V_DDR;
 
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index f4a7733a8ad2..5f91b44891f9 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2065,10 +2065,15 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 
 	host->mmc->actual_clock = 0;
 
-	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+	clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+	if (clk & SDHCI_CLOCK_CARD_EN)
+		sdhci_writew(host, clk & ~SDHCI_CLOCK_CARD_EN,
+			SDHCI_CLOCK_CONTROL);
 
-	if (clock == 0)
+	if (clock == 0) {
+		sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 		return;
+	}
 
 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
 	sdhci_enable_clk(host, clk);
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index a75755f31d31..41787ea77a13 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -44,6 +44,7 @@
 #define CTL_RESET_SD 0xe0
 #define CTL_VERSION 0xe2
 #define CTL_SDIF_MODE 0xe6 /* only known on R-Car 2+ */
+#define CTL_SD_STATUS 0xf2 /* only known on RZ/{G2L,G3E,V2H} */
 
 /* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */
 #define TMIO_STOP_STP		BIT(0)
@@ -103,6 +104,10 @@
 /* Definitions for values the CTL_SDIF_MODE register can take */
 #define SDIF_MODE_HS400		BIT(0) /* only known on R-Car 2+ */
 
+/* Definitions for values the CTL_SD_STATUS register can take */
+#define SD_STATUS_PWEN		BIT(0) /* only known on RZ/{G3E,V2H} */
+#define SD_STATUS_IOVS		BIT(16) /* only known on RZ/{G3E,V2H} */
+
 /* Define some IRQ masks */
 /* This is the mask used at reset by the chip */
 #define TMIO_MASK_ALL           0x837f031d
@@ -226,6 +231,11 @@ static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host,
 	       ioread16(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
 }
 
+static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
+{
+	return ioread32(host->ctl + (addr << host->bus_shift));
+}
+
 static inline void sd_ctrl_read32_rep(struct tmio_mmc_host *host, int addr,
 				      u32 *buf, int count)
 {