diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 092baf6..e8a7b50 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -37,6 +37,13 @@
 
 	  If unsure, say N.
 
+config MMC_SDHCI_IO_ACCESSORS
+	bool
+	depends on MMC_SDHCI
+	help
+	  This is silent Kconfig symbol that is selected by the drivers that
+	  need to overwrite SDHCI IO memory accessors.
+
 config MMC_SDHCI_PCI
 	tristate "SDHCI support on PCI bus"
 	depends on MMC_SDHCI && PCI
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index accb592..fd36b82 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -48,35 +48,35 @@
 	printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
 
 	printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
-		readl(host->ioaddr + SDHCI_DMA_ADDRESS),
-		readw(host->ioaddr + SDHCI_HOST_VERSION));
+		sdhci_readl(host, SDHCI_DMA_ADDRESS),
+		sdhci_readw(host, SDHCI_HOST_VERSION));
 	printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
-		readw(host->ioaddr + SDHCI_BLOCK_SIZE),
-		readw(host->ioaddr + SDHCI_BLOCK_COUNT));
+		sdhci_readw(host, SDHCI_BLOCK_SIZE),
+		sdhci_readw(host, SDHCI_BLOCK_COUNT));
 	printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
-		readl(host->ioaddr + SDHCI_ARGUMENT),
-		readw(host->ioaddr + SDHCI_TRANSFER_MODE));
+		sdhci_readl(host, SDHCI_ARGUMENT),
+		sdhci_readw(host, SDHCI_TRANSFER_MODE));
 	printk(KERN_DEBUG DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
-		readl(host->ioaddr + SDHCI_PRESENT_STATE),
-		readb(host->ioaddr + SDHCI_HOST_CONTROL));
+		sdhci_readl(host, SDHCI_PRESENT_STATE),
+		sdhci_readb(host, SDHCI_HOST_CONTROL));
 	printk(KERN_DEBUG DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
-		readb(host->ioaddr + SDHCI_POWER_CONTROL),
-		readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL));
+		sdhci_readb(host, SDHCI_POWER_CONTROL),
+		sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
 	printk(KERN_DEBUG DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
-		readb(host->ioaddr + SDHCI_WAKE_UP_CONTROL),
-		readw(host->ioaddr + SDHCI_CLOCK_CONTROL));
+		sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
+		sdhci_readw(host, SDHCI_CLOCK_CONTROL));
 	printk(KERN_DEBUG DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
-		readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL),
-		readl(host->ioaddr + SDHCI_INT_STATUS));
+		sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
+		sdhci_readl(host, SDHCI_INT_STATUS));
 	printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
-		readl(host->ioaddr + SDHCI_INT_ENABLE),
-		readl(host->ioaddr + SDHCI_SIGNAL_ENABLE));
+		sdhci_readl(host, SDHCI_INT_ENABLE),
+		sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
 	printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
-		readw(host->ioaddr + SDHCI_ACMD12_ERR),
-		readw(host->ioaddr + SDHCI_SLOT_INT_STATUS));
+		sdhci_readw(host, SDHCI_ACMD12_ERR),
+		sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
 	printk(KERN_DEBUG DRIVER_NAME ": Caps:     0x%08x | Max curr: 0x%08x\n",
-		readl(host->ioaddr + SDHCI_CAPABILITIES),
-		readl(host->ioaddr + SDHCI_MAX_CURRENT));
+		sdhci_readl(host, SDHCI_CAPABILITIES),
+		sdhci_readl(host, SDHCI_MAX_CURRENT));
 
 	printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
 }
@@ -92,12 +92,12 @@
 	unsigned long timeout;
 
 	if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
-		if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
+		if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
 			SDHCI_CARD_PRESENT))
 			return;
 	}
 
-	writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET);
+	sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
 
 	if (mask & SDHCI_RESET_ALL)
 		host->clock = 0;
@@ -106,7 +106,7 @@
 	timeout = 100;
 
 	/* hw clears the bit when it's done */
-	while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) {
+	while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
 		if (timeout == 0) {
 			printk(KERN_ERR "%s: Reset 0x%x never completed.\n",
 				mmc_hostname(host->mmc), (int)mask);
@@ -132,26 +132,26 @@
 		SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
 		SDHCI_INT_ADMA_ERROR;
 
-	writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
-	writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
+	sdhci_writel(host, intmask, SDHCI_INT_ENABLE);
+	sdhci_writel(host, intmask, SDHCI_SIGNAL_ENABLE);
 }
 
 static void sdhci_activate_led(struct sdhci_host *host)
 {
 	u8 ctrl;
 
-	ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	ctrl |= SDHCI_CTRL_LED;
-	writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 }
 
 static void sdhci_deactivate_led(struct sdhci_host *host)
 {
 	u8 ctrl;
 
-	ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 	ctrl &= ~SDHCI_CTRL_LED;
-	writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 }
 
 #ifdef SDHCI_USE_LEDS_CLASS
@@ -205,7 +205,7 @@
 
 		while (len) {
 			if (chunk == 0) {
-				scratch = readl(host->ioaddr + SDHCI_BUFFER);
+				scratch = sdhci_readl(host, SDHCI_BUFFER);
 				chunk = 4;
 			}
 
@@ -257,7 +257,7 @@
 			len--;
 
 			if ((chunk == 4) || ((len == 0) && (blksize == 0))) {
-				writel(scratch, host->ioaddr + SDHCI_BUFFER);
+				sdhci_writel(host, scratch, SDHCI_BUFFER);
 				chunk = 0;
 				scratch = 0;
 			}
@@ -292,7 +292,7 @@
 		(host->data->blocks == 1))
 		mask = ~0;
 
-	while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
+	while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
 		if (host->data->flags & MMC_DATA_READ)
 			sdhci_read_block_pio(host);
 		else
@@ -581,7 +581,7 @@
 	host->data_early = 0;
 
 	count = sdhci_calc_timeout(host, data);
-	writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL);
+	sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
 
 	if (host->flags & SDHCI_USE_DMA)
 		host->flags |= SDHCI_REQ_USE_DMA;
@@ -661,8 +661,8 @@
 				WARN_ON(1);
 				host->flags &= ~SDHCI_REQ_USE_DMA;
 			} else {
-				writel(host->adma_addr,
-					host->ioaddr + SDHCI_ADMA_ADDRESS);
+				sdhci_writel(host, host->adma_addr,
+					SDHCI_ADMA_ADDRESS);
 			}
 		} else {
 			int sg_cnt;
@@ -681,8 +681,8 @@
 				host->flags &= ~SDHCI_REQ_USE_DMA;
 			} else {
 				WARN_ON(sg_cnt != 1);
-				writel(sg_dma_address(data->sg),
-					host->ioaddr + SDHCI_DMA_ADDRESS);
+				sdhci_writel(host, sg_dma_address(data->sg),
+					SDHCI_DMA_ADDRESS);
 			}
 		}
 	}
@@ -693,14 +693,14 @@
 	 * is ADMA.
 	 */
 	if (host->version >= SDHCI_SPEC_200) {
-		ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+		ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 		ctrl &= ~SDHCI_CTRL_DMA_MASK;
 		if ((host->flags & SDHCI_REQ_USE_DMA) &&
 			(host->flags & SDHCI_USE_ADMA))
 			ctrl |= SDHCI_CTRL_ADMA32;
 		else
 			ctrl |= SDHCI_CTRL_SDMA;
-		writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+		sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 	}
 
 	if (!(host->flags & SDHCI_REQ_USE_DMA)) {
@@ -710,9 +710,8 @@
 	}
 
 	/* We do not handle DMA boundaries, so set it to max (512 KiB) */
-	writew(SDHCI_MAKE_BLKSZ(7, data->blksz),
-		host->ioaddr + SDHCI_BLOCK_SIZE);
-	writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT);
+	sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, data->blksz), SDHCI_BLOCK_SIZE);
+	sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
 }
 
 static void sdhci_set_transfer_mode(struct sdhci_host *host,
@@ -733,7 +732,7 @@
 	if (host->flags & SDHCI_REQ_USE_DMA)
 		mode |= SDHCI_TRNS_DMA;
 
-	writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE);
+	sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
 }
 
 static void sdhci_finish_data(struct sdhci_host *host)
@@ -802,7 +801,7 @@
 	if (host->mrq->data && (cmd == host->mrq->data->stop))
 		mask &= ~SDHCI_DATA_INHIBIT;
 
-	while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
+	while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
 		if (timeout == 0) {
 			printk(KERN_ERR "%s: Controller never released "
 				"inhibit bit(s).\n", mmc_hostname(host->mmc));
@@ -821,7 +820,7 @@
 
 	sdhci_prepare_data(host, cmd->data);
 
-	writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT);
+	sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
 
 	sdhci_set_transfer_mode(host, cmd->data);
 
@@ -849,8 +848,7 @@
 	if (cmd->data)
 		flags |= SDHCI_CMD_DATA;
 
-	writew(SDHCI_MAKE_CMD(cmd->opcode, flags),
-		host->ioaddr + SDHCI_COMMAND);
+	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
 }
 
 static void sdhci_finish_command(struct sdhci_host *host)
@@ -863,15 +861,15 @@
 		if (host->cmd->flags & MMC_RSP_136) {
 			/* CRC is stripped so we need to do some shifting. */
 			for (i = 0;i < 4;i++) {
-				host->cmd->resp[i] = readl(host->ioaddr +
+				host->cmd->resp[i] = sdhci_readl(host,
 					SDHCI_RESPONSE + (3-i)*4) << 8;
 				if (i != 3)
 					host->cmd->resp[i] |=
-						readb(host->ioaddr +
+						sdhci_readb(host,
 						SDHCI_RESPONSE + (3-i)*4-1);
 			}
 		} else {
-			host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE);
+			host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE);
 		}
 	}
 
@@ -895,7 +893,7 @@
 	if (clock == host->clock)
 		return;
 
-	writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
+	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 
 	if (clock == 0)
 		goto out;
@@ -908,11 +906,11 @@
 
 	clk = div << SDHCI_DIVIDER_SHIFT;
 	clk |= SDHCI_CLOCK_INT_EN;
-	writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
+	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 
 	/* Wait max 10 ms */
 	timeout = 10;
-	while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL))
+	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
 		& SDHCI_CLOCK_INT_STABLE)) {
 		if (timeout == 0) {
 			printk(KERN_ERR "%s: Internal clock never "
@@ -925,7 +923,7 @@
 	}
 
 	clk |= SDHCI_CLOCK_CARD_EN;
-	writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
+	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 
 out:
 	host->clock = clock;
@@ -939,7 +937,7 @@
 		return;
 
 	if (power == (unsigned short)-1) {
-		writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
+		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
 		goto out;
 	}
 
@@ -948,7 +946,7 @@
 	 * a new value. Some controllers don't seem to like this though.
 	 */
 	if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
-		writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
+		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
 
 	pwr = SDHCI_POWER_ON;
 
@@ -973,10 +971,9 @@
 	 * and set turn on power at the same time, so set the voltage first.
 	 */
 	if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
-		writeb(pwr & ~SDHCI_POWER_ON,
-				host->ioaddr + SDHCI_POWER_CONTROL);
+		sdhci_writeb(host, pwr & ~SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
 
-	writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
+	sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
 
 out:
 	host->power = power;
@@ -1005,7 +1002,7 @@
 
 	host->mrq = mrq;
 
-	if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)
+	if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)
 		|| (host->flags & SDHCI_DEVICE_DEAD)) {
 		host->mrq->cmd->error = -ENOMEDIUM;
 		tasklet_schedule(&host->finish_tasklet);
@@ -1034,7 +1031,7 @@
 	 * Should clear out any weird states.
 	 */
 	if (ios->power_mode == MMC_POWER_OFF) {
-		writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE);
+		sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
 		sdhci_init(host);
 	}
 
@@ -1045,7 +1042,7 @@
 	else
 		sdhci_set_power(host, ios->vdd);
 
-	ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 
 	if (ios->bus_width == MMC_BUS_WIDTH_4)
 		ctrl |= SDHCI_CTRL_4BITBUS;
@@ -1057,7 +1054,7 @@
 	else
 		ctrl &= ~SDHCI_CTRL_HISPD;
 
-	writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 
 	/*
 	 * Some (ENE) controllers go apeshit on some ios operation,
@@ -1085,7 +1082,7 @@
 	if (host->flags & SDHCI_DEVICE_DEAD)
 		present = 0;
 	else
-		present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
+		present = sdhci_readl(host, SDHCI_PRESENT_STATE);
 
 	spin_unlock_irqrestore(&host->lock, flags);
 
@@ -1105,14 +1102,14 @@
 	if (host->flags & SDHCI_DEVICE_DEAD)
 		goto out;
 
-	ier = readl(host->ioaddr + SDHCI_INT_ENABLE);
+	ier = sdhci_readl(host, SDHCI_INT_ENABLE);
 
 	ier &= ~SDHCI_INT_CARD_INT;
 	if (enable)
 		ier |= SDHCI_INT_CARD_INT;
 
-	writel(ier, host->ioaddr + SDHCI_INT_ENABLE);
-	writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE);
+	sdhci_writel(host, ier, SDHCI_INT_ENABLE);
+	sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE);
 
 out:
 	mmiowb();
@@ -1142,7 +1139,7 @@
 
 	spin_lock_irqsave(&host->lock, flags);
 
-	if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
+	if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
 		if (host->mrq) {
 			printk(KERN_ERR "%s: Card removed during transfer!\n",
 				mmc_hostname(host->mmc));
@@ -1346,8 +1343,8 @@
 		 * we need to at least restart the transfer.
 		 */
 		if (intmask & SDHCI_INT_DMA_END)
-			writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS),
-				host->ioaddr + SDHCI_DMA_ADDRESS);
+			sdhci_writel(host, sdhci_readl(host, SDHCI_DMA_ADDRESS),
+				SDHCI_DMA_ADDRESS);
 
 		if (intmask & SDHCI_INT_DATA_END) {
 			if (host->cmd) {
@@ -1373,7 +1370,7 @@
 
 	spin_lock(&host->lock);
 
-	intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
+	intmask = sdhci_readl(host, SDHCI_INT_STATUS);
 
 	if (!intmask || intmask == 0xffffffff) {
 		result = IRQ_NONE;
@@ -1384,22 +1381,22 @@
 		mmc_hostname(host->mmc), intmask);
 
 	if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
-		writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE),
-			host->ioaddr + SDHCI_INT_STATUS);
+		sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT |
+			SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS);
 		tasklet_schedule(&host->card_tasklet);
 	}
 
 	intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
 
 	if (intmask & SDHCI_INT_CMD_MASK) {
-		writel(intmask & SDHCI_INT_CMD_MASK,
-			host->ioaddr + SDHCI_INT_STATUS);
+		sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK,
+			SDHCI_INT_STATUS);
 		sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
 	}
 
 	if (intmask & SDHCI_INT_DATA_MASK) {
-		writel(intmask & SDHCI_INT_DATA_MASK,
-			host->ioaddr + SDHCI_INT_STATUS);
+		sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK,
+			SDHCI_INT_STATUS);
 		sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
 	}
 
@@ -1410,7 +1407,7 @@
 	if (intmask & SDHCI_INT_BUS_POWER) {
 		printk(KERN_ERR "%s: Card is consuming too much power!\n",
 			mmc_hostname(host->mmc));
-		writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS);
+		sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS);
 	}
 
 	intmask &= ~SDHCI_INT_BUS_POWER;
@@ -1425,7 +1422,7 @@
 			mmc_hostname(host->mmc), intmask);
 		sdhci_dumpregs(host);
 
-		writel(intmask, host->ioaddr + SDHCI_INT_STATUS);
+		sdhci_writel(host, intmask, SDHCI_INT_STATUS);
 	}
 
 	result = IRQ_HANDLED;
@@ -1537,7 +1534,7 @@
 
 	sdhci_reset(host, SDHCI_RESET_ALL);
 
-	host->version = readw(host->ioaddr + SDHCI_HOST_VERSION);
+	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 	host->version = (host->version & SDHCI_SPEC_VER_MASK)
 				>> SDHCI_SPEC_VER_SHIFT;
 	if (host->version > SDHCI_SPEC_200) {
@@ -1546,7 +1543,7 @@
 			host->version);
 	}
 
-	caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
+	caps = sdhci_readl(host, SDHCI_CAPABILITIES);
 
 	if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
 		host->flags |= SDHCI_USE_DMA;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 43c37c6..d9733f8 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -10,6 +10,9 @@
  */
 
 #include <linux/scatterlist.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/io.h>
 
 /*
  * Controller registers
@@ -267,9 +270,101 @@
 
 
 struct sdhci_ops {
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+	u32		(*readl)(struct sdhci_host *host, int reg);
+	u16		(*readw)(struct sdhci_host *host, int reg);
+	u8		(*readb)(struct sdhci_host *host, int reg);
+	void		(*writel)(struct sdhci_host *host, u32 val, int reg);
+	void		(*writew)(struct sdhci_host *host, u16 val, int reg);
+	void		(*writeb)(struct sdhci_host *host, u8 val, int reg);
+#endif
+
 	int		(*enable_dma)(struct sdhci_host *host);
 };
 
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+	if (unlikely(host->ops->writel))
+		host->ops->writel(host, val, reg);
+	else
+		writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+	if (unlikely(host->ops->writew))
+		host->ops->writew(host, val, reg);
+	else
+		writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+	if (unlikely(host->ops->writeb))
+		host->ops->writeb(host, val, reg);
+	else
+		writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+	if (unlikely(host->ops->readl))
+		return host->ops->readl(host, reg);
+	else
+		return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+	if (unlikely(host->ops->readw))
+		return host->ops->readw(host, reg);
+	else
+		return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+	if (unlikely(host->ops->readb))
+		return host->ops->readb(host, reg);
+	else
+		return readb(host->ioaddr + reg);
+}
+
+#else
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+	writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+	writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+	writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+	return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+	return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+	return readb(host->ioaddr + reg);
+}
+
+#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
 
 extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
 	size_t priv_size);