[PATCH 1/2] Add the GPIO Write Protection Solution on i.MX51 BBG board

[Richard Zhu]

---
 arch/arm/mach-mx5/board-mx51_babbage.c      |   16 ++++++++++++++--
 arch/arm/plat-mxc/include/mach/iomux-mx51.h |    8 +++++---
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index 476bfe4..5a69cda 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -34,6 +34,8 @@
 #include "devices-imx51.h"
 #include "devices.h"
 
+#define BABBAGE_SDHCI1_WP	(0*32 + 1)	/* GPIO_1_1 */
+#define BABBAGE_SDHCI2_WP	(0*32 + 5)	/* GPIO_1_5 */
 #define BABBAGE_USB_HUB_RESET	(0*32 + 7)	/* GPIO_1_7 */
 #define BABBAGE_USBH1_STP	(0*32 + 27)	/* GPIO_1_27 */
 #define BABBAGE_PHY_RESET (1*32 +5)	/* GPIO_2_5 */
@@ -102,6 +104,7 @@ static struct pad_desc mx51babbage_pads[] = {
 	MX51_PAD_SD1_DATA1__SD1_DATA1,
 	MX51_PAD_SD1_DATA2__SD1_DATA2,
 	MX51_PAD_SD1_DATA3__SD1_DATA3,
+	MX51_PAD_GPIO_1_1__GPIO_1_1,
 
 	/* SD 2 */
 	MX51_PAD_SD2_CMD__SD2_CMD,
@@ -110,6 +113,7 @@ static struct pad_desc mx51babbage_pads[] = {
 	MX51_PAD_SD2_DATA1__SD2_DATA1,
 	MX51_PAD_SD2_DATA2__SD2_DATA2,
 	MX51_PAD_SD2_DATA3__SD2_DATA3,
+	MX51_PAD_GPIO_1_5__GPIO_1_5,
 };
 
 /* Serial ports */
@@ -257,6 +261,14 @@ static int __init babbage_otg_mode(char *options)
 }
 __setup("otg_mode=", babbage_otg_mode);
 
+static struct esdhc_platform_data esdhc_imx_pdata1 = {
+	.wp_gpio = BABBAGE_SDHCI1_WP,
+};
+
+static struct esdhc_platform_data esdhc_imx_pdata2 = {
+	.wp_gpio = BABBAGE_SDHCI2_WP,
+};
+
 /*
  * Board specific initialization.
  */
@@ -286,8 +298,8 @@ static void __init mxc_board_init(void)
 	mxc_iomux_v3_setup_pad(&usbh1stp);
 	babbage_usbhub_reset();
 
-	imx51_add_esdhc(0, NULL);
-	imx51_add_esdhc(1, NULL);
+	imx51_add_esdhc(0, &esdhc_imx_pdata1);
+	imx51_add_esdhc(1, &esdhc_imx_pdata2);
 }
 
 static void __init mx51_babbage_timer_init(void)
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
index 935f790..a3d84ad 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
@@ -43,7 +43,7 @@ typedef enum iomux_config {
 #define MX51_USBH1_PAD_CTRL	(PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | \
 				PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
 				PAD_CTL_PKE | PAD_CTL_HYS)
-#define MX51_GPIO_PAD_CTRL		(PAD_CTL_DSE_HIGH | PAD_CTL_PKE | \
+#define MX51_GPIO_PAD_CTRL	(PAD_CTL_DSE_HIGH | PAD_CTL_PKE | \
 				PAD_CTL_SRE_FAST)
 #define MX51_SDHCI_PAD_CTRL	(PAD_CTL_DSE_HIGH | PAD_CTL_PUS_47K_UP | \
 				PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_SRE_FAST | \
@@ -310,7 +310,8 @@ typedef enum iomux_config {
 #define MX51_PAD_SD1_DATA3__SD1_DATA3		IOMUX_PAD(0x7B0, 0x3A8, IOMUX_CONFIG_SION, 0x0, 0, \
 							MX51_SDHCI_PAD_CTRL)
 #define MX51_PAD_GPIO_1_0__GPIO_1_0		IOMUX_PAD(0x7B4, 0x3AC, 1, 0x0,   0, NO_PAD_CTRL)
-#define MX51_PAD_GPIO_1_1__GPIO_1_1		IOMUX_PAD(0x7B8, 0x3B0, 1, 0x0,   0, NO_PAD_CTRL)
+#define MX51_PAD_GPIO_1_1__GPIO_1_1		IOMUX_PAD(0x7B8, 0x3B0, IOMUX_CONFIG_GPIO, 0x0, 0, \
+							MX51_SDHCI_PAD_CTRL)
 #define MX51_PAD_SD2_CMD__SD2_CMD		IOMUX_PAD(0x7BC, 0x3B4, IOMUX_CONFIG_SION, 0x0, 1, \
 							MX51_SDHCI_PAD_CTRL)
 #define MX51_PAD_SD2_CLK__SD2_CLK		IOMUX_PAD(0x7C0, 0x3B8, IOMUX_CONFIG_SION, 0x0, 0, \
@@ -331,7 +332,8 @@ typedef enum iomux_config {
 							0x9bc,   3, MX51_I2C_PAD_CTRL)
 #define MX51_PAD_PMIC_INT_REQ__PMIC_INT_REQ	IOMUX_PAD(0x7FC, 0x3D4, 0, 0x0,   0, NO_PAD_CTRL)
 #define MX51_PAD_GPIO_1_4__GPIO_1_4		IOMUX_PAD(0x804, 0x3D8, 0, 0x0,   0, NO_PAD_CTRL)
-#define MX51_PAD_GPIO_1_5__GPIO_1_5		IOMUX_PAD(0x808, 0x3DC, 0, 0x0,   0, NO_PAD_CTRL)
+#define MX51_PAD_GPIO_1_5__GPIO_1_5		IOMUX_PAD(0x808, 0x3DC, IOMUX_CONFIG_GPIO, 0x0, 1, \
+							MX51_SDHCI_PAD_CTRL)
 #define MX51_PAD_GPIO_1_6__GPIO_1_6		IOMUX_PAD(0x80C, 0x3E0, 0, 0x0,   0, MX51_GPIO_PAD_CTRL)
 #define MX51_PAD_GPIO_1_7__GPIO_1_7		IOMUX_PAD(0x810, 0x3E4, 0, 0x0,   0, MX51_GPIO_PAD_CTRL)
 #define MX51_PAD_GPIO_1_8__GPIO_1_8		IOMUX_PAD(0x814, 0x3E8, 0, 0x0,   1, MX51_GPIO_PAD_CTRL)
-- 
1.6.3.3