[ARM] 3446/1: i.MX: MMC/SD SDHC controller registration for i.MX/MX1 MX1ADS board

Patch from Pavel Pisa

From: Stefano Fedrigo <aleph@develer.com>

This adds to the MX1ADS platform the needed code to detect
insertion/removal of an MMC/SD card.  Tested on a v1.1 board.

Signed-off-by: Stefano Fedrigo <aleph@develer.com>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/mx1ads.c b/arch/arm/mach-imx/mx1ads.c
index 8ab1b040288c..e34d0df90aed 100644
--- a/arch/arm/mach-imx/mx1ads.c
+++ b/arch/arm/mach-imx/mx1ads.c
@@ -25,6 +25,7 @@
 #include <asm/mach-types.h>
 
 #include <asm/mach/arch.h>
+#include <asm/arch/mmc.h>
 #include <linux/interrupt.h>
 #include "generic.h"
 
@@ -51,12 +52,29 @@ static struct platform_device *devices[] __initdata = {
         &cs89x0_device,
 };
 
+#ifdef CONFIG_MMC_IMX
+static int mx1ads_mmc_card_present(void)
+{
+        /* MMC/SD Card Detect is PB 20 on MX1ADS V1.0.7 */
+        return (SSR(1) & (1 << 20) ? 0 : 1);
+}
+
+static struct imxmmc_platform_data mx1ads_mmc_info = {
+       .card_present = mx1ads_mmc_card_present,
+};
+#endif
+
 static void __init
 mx1ads_init(void)
 {
 #ifdef CONFIG_LEDS
         imx_gpio_mode(GPIO_PORTA | GPIO_OUT | 2);
 #endif
+#ifdef CONFIG_MMC_IMX
+        /* SD/MMC card detect */
+        imx_gpio_mode(GPIO_PORTB | GPIO_GIUS | GPIO_IN | 20);
+        imx_set_mmc_info(&mx1ads_mmc_info);
+#endif
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }