Subject: [PATCH] MX27 3ds: Add SDHC1 support to mx27 3ds

From: [email-masked] (Rogerio Pimentel)
Date: Wed, 20 Oct 2010 14:36:02 -0200

Add SDHC1 support to MX27 3ds

Signed-off-by: Rogerio Pimentel <[email-masked]>

---
  arch/arm/mach-imx/mach-mx27_3ds.c |   38 
+++++++++++++++++++++++++++++++++++++
  1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c 
b/arch/arm/mach-imx/mach-mx27_3ds.c
index a69dba2..a02a00a 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -23,16 +23,20 @@
  #include <linux/platform_device.h>
  #include <linux/gpio.h>
  #include <linux/input/matrix_keypad.h>
+#include <linux/irq.h>
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/time.h>
  #include <mach/hardware.h>
  #include <mach/common.h>
  #include <mach/iomux-mx27.h>
+#include <mach/mmc.h>

  #include "devices-imx27.h"
  #include "devices.h"

+#define SD1_EN_GPIO (GPIO_PORTB + 25)
+
  static const int mx27pdk_pins[] __initconst = {
      /* UART1 */
      PE12_PF_UART1_TXD,
@@ -58,6 +62,14 @@ static const int mx27pdk_pins[] __initconst = {
      PD15_AOUT_FEC_COL,
      PD16_AIN_FEC_TX_ER,
      PF23_AIN_FEC_TX_EN,
+    /* SDHC1 */
+    PE18_PF_SD1_D0,
+    PE19_PF_SD1_D1,
+    PE20_PF_SD1_D2,
+    PE21_PF_SD1_D3,
+    PE22_PF_SD1_CMD,
+    PE23_PF_SD1_CLK,
+    SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
  };

  static const struct imxuart_platform_data uart_pdata __initconst = {
@@ -85,13 +97,39 @@ static struct matrix_keymap_data 
mx27_3ds_keymap_data = {
      .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
  };

+static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t 
detect_irq,
+                void *data)
+{
+    return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
+            IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
+}
+
+static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
+{
+    free_irq(IRQ_GPIOB(26), data);
+}
+
+static struct imxmmc_platform_data sdhc1_pdata = {
+    .init = mx27_3ds_sdhc1_init,
+    .exit = mx27_3ds_sdhc1_exit,
+};
+
+static void mx27_3ds_sdhc1_enable_level_translator(void)
+{
+    /* Turn on TXB0108 OE pin */
+    gpio_request(SD1_EN_GPIO, "sd1_enable");
+    gpio_direction_output(SD1_EN_GPIO, 1);
+}
+
  static void __init mx27pdk_init(void)
  {
      mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
          "mx27pdk");
+    mx27_3ds_sdhc1_enable_level_translator();
      imx27_add_imx_uart0(&uart_pdata);
      imx27_add_fec(NULL);
      mxc_register_device(&imx_kpp_device, &mx27_3ds_keymap_data);
+    mxc_register_device(&mxc_sdhc_device0, &sdhc1_pdata);
  }

  static void __init mx27pdk_timer_init(void)
-- 
1.7.0.4