mmc: omap_hsmmc: Fix pbias for omap3_logic to enable CD pin

The MMC card detect pin is connected to gpio127 on omap3_logic.
When setting up the pbias register for MMC, let's also enable
gpio_127 for the card detect.  As part of the package deal,
gpio_126 and gpio_129 are also enabled.

Signed-off-by: Adam Ford <aford173@gmail.com>

arch/arm/include/asm/arch-omap3/mmc_host_def.h

@@ -51,6 +51,7 @@ typedef struct t2 {
 #define PBIASLITEPWRDNZ0		(1 << 1)
 #define PBIASSPEEDCTRL0			(1 << 2)
 #define PBIASLITEPWRDNZ1		(1 << 9)
+#define PBIASLITEVMODE1			(1 << 8)
 #define PBIASLITEVMODE0			(1 << 0)
 
 #define CTLPROGIO1SPEEDCTRL		(1 << 20)

drivers/mmc/omap_hsmmc.c

@@ -216,6 +216,10 @@ static unsigned char mmc_board_init(struct mmc *mmc)
 	/* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
 	pbias_lite &= ~PBIASLITEVMODE0;
 #endif
+#ifdef CONFIG_TARGET_OMAP3_LOGIC
+	/* For Logic PD board, 1.8V bias to go enable gpio127 for mmc_cd */
+	pbias_lite &= ~PBIASLITEVMODE1;
+#endif
 #ifdef CONFIG_MMC_OMAP36XX_PINS
 	if (get_cpu_family() == CPU_OMAP36XX) {
 		/* Disable extended drain IO before changing PBIAS */