From ccf7988b9ace671085a7ae6e7317c6a378c4a309 Mon Sep 17 00:00:00 2001
From: Tom Warren <twarren@nvidia.com>
Date: Wed, 21 Sep 2011 12:40:07 +0000
Subject: tegra2: Enable MMC for Seaboard

This adds the required GPIO and pinmux configuration to make eMMC / SD work
on Seaboard.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Warren <twarren@nvidia.com>
---
 board/nvidia/seaboard/seaboard.c | 35 ++++++++++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

(limited to 'board/nvidia/seaboard')

diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
index 4b9a8f33e8..bc67d0f94c 100644
--- a/board/nvidia/seaboard/seaboard.c
+++ b/board/nvidia/seaboard/seaboard.c
@@ -24,7 +24,10 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/tegra2.h>
-#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
+#ifdef CONFIG_TEGRA2_MMC
+#include <mmc.h>
+#endif
 
 /*
  * Routine: gpio_config_uart
@@ -50,3 +53,33 @@ void gpio_config_uart(void)
 	val |= 1 << GPIO_BIT(gp);
 	writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]);
 }
+
+#ifdef CONFIG_TEGRA2_MMC
+/*
+ * Routine: gpio_config_mmc
+ * Description: Set GPIOs for SDMMC3 SDIO slot.
+ */
+void gpio_config_mmc(void)
+{
+	/* Set EN_VDDIO_SD (GPIO I6) */
+	gpio_direction_output(GPIO_PI6, 1);
+
+	/* Config pin as GPI for Card Detect (GPIO I5) */
+	gpio_direction_input(GPIO_PI5);
+}
+
+/* this is a weak define that we are overriding */
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+	debug("board_mmc_getcd called\n");
+	*cd = 1;			/* Assume card is inserted, or eMMC */
+
+	if (IS_SD(mmc)) {
+		/* Seaboard SDMMC3 = SDIO3_CD = GPIO_PI5 */
+		if (gpio_get_value(GPIO_PI5))
+			*cd = 0;
+	}
+
+	return 0;
+}
+#endif
-- 
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