omap mmc: Add low-level initialization for hsmmc controller

Add low-level initialization for hsmmc controller. Merged into
this patch patch are various improvments and board support by
Grazvydas Ignotas and David Brownell.

Also change wire4 to be wires, as some newer controllers support
8 data lines.

Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index e09aa59a399c..82b3dc557c96 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -26,6 +26,7 @@
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
@@ -44,6 +45,8 @@
 #include <mach/hardware.h>
 #include <mach/nand.h>
 
+#include "mmc-twl4030.h"
+
 #define NAND_BLOCK_SIZE SZ_128K
 #define GPMC_CS0_BASE  0x60
 #define GPMC_CS_SIZE   0x30
@@ -139,8 +142,31 @@ static struct omap_uart_config overo_uart_config __initdata = {
         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 };
 
+static struct twl4030_gpio_platform_data overo_gpio_data = {
+        .gpio_base      = OMAP_MAX_GPIO_LINES,
+        .irq_base       = TWL4030_GPIO_IRQ_BASE,
+        .irq_end        = TWL4030_GPIO_IRQ_END,
+};
+
+static struct twl4030_platform_data overo_twldata = {
+        .irq_base       = TWL4030_IRQ_BASE,
+        .irq_end        = TWL4030_IRQ_END,
+        .gpio           = &overo_gpio_data,
+};
+
+static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
+        {
+                I2C_BOARD_INFO("twl4030", 0x48),
+                .flags = I2C_CLIENT_WAKE,
+                .irq = INT_34XX_SYS_NIRQ,
+                .platform_data = &overo_twldata,
+        },
+};
+
 static int __init overo_i2c_init(void)
 {
+        omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
+                        ARRAY_SIZE(overo_i2c_boardinfo));
         /* i2c2 pins are used for gpio */
         omap_register_i2c_bus(3, 400, NULL, 0);
         return 0;
@@ -171,6 +197,22 @@ static struct platform_device *overo_devices[] __initdata = {
         &overo_lcd_device,
 };
 
+static struct twl4030_hsmmc_info mmc[] __initdata = {
+        {
+                .mmc            = 1,
+                .wires          = 4,
+                .gpio_cd        = -EINVAL,
+                .gpio_wp        = -EINVAL,
+        },
+        {
+                .mmc            = 2,
+                .wires          = 4,
+                .gpio_cd        = -EINVAL,
+                .gpio_wp        = -EINVAL,
+        },
+        {}      /* Terminator */
+};
+
 static void __init overo_init(void)
 {
         overo_i2c_init();
@@ -178,6 +220,7 @@ static void __init overo_init(void)
         omap_board_config = overo_config;
         omap_board_config_size = ARRAY_SIZE(overo_config);
         omap_serial_init();
+        twl4030_mmc_init(mmc);
         overo_flash_init();
 
         if ((gpio_request(OVERO_GPIO_W2W_NRESET,