ARM: IMX31: configure pins iomux for SDHC setup on litekit board.

This patch adds SDHC support, and corrects current pins setup.
Added irq handling on card removal.

Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx3/mx31lite-db.c

@@ -67,6 +67,13 @@ static unsigned int litekit_db_board_pins[] __initdata = {
 	MX31_PIN_CSPI1_SS0__SS0,
 	MX31_PIN_CSPI1_SS1__SS1,
 	MX31_PIN_CSPI1_SS2__SS2,
+	/* SDHC1 */
+	MX31_PIN_SD1_DATA0__SD1_DATA0,
+	MX31_PIN_SD1_DATA1__SD1_DATA1,
+	MX31_PIN_SD1_DATA2__SD1_DATA2,
+	MX31_PIN_SD1_DATA3__SD1_DATA3,
+	MX31_PIN_SD1_CLK__SD1_CLK,
+	MX31_PIN_SD1_CMD__SD1_CMD,
 };
 
 /* UART */
@@ -79,11 +86,11 @@ static struct imxuart_platform_data uart_pdata __initdata = {
 static int gpio_det, gpio_wp;
 
 #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
-			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+		     PAD_CTL_ODE_CMOS)
 
 static int mxc_mmc1_get_ro(struct device *dev)
 {
-	return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
+	return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6));
 }
 
 static int mxc_mmc1_init(struct device *dev,
@@ -94,12 +101,17 @@ static int mxc_mmc1_init(struct device *dev,
 	gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
 	gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
 
-	mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
-	mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
-	mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
-	mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_SD1_DATA0,
+			  MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX31_PIN_SD1_DATA1,
+			  MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX31_PIN_SD1_DATA2,
+			  MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX31_PIN_SD1_DATA3,
+			  MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
+	mxc_iomux_set_pad(MX31_PIN_SD1_CMD,
+			  MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU);
 	mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
-	mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
 
 	ret = gpio_request(gpio_det, "MMC detect");
 	if (ret)
@@ -113,7 +125,7 @@ static int mxc_mmc1_init(struct device *dev,
 	gpio_direction_input(gpio_wp);
 
 	ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq,
-			  IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+			  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 			  "MMC detect", data);
 	if (ret)
 		goto exit_free_wp;
@@ -133,7 +145,7 @@ static void mxc_mmc1_exit(struct device *dev, void *data)
 {
 	gpio_free(gpio_det);
 	gpio_free(gpio_wp);
-	free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data);
+	free_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), data);
 }
 
 static struct imxmmc_platform_data mmc_pdata = {