omap: blaze: add mmc5/wl1283 device support

Add MMC5 support on BLAZE, which has the wl1283 device hardwired to.

The wl1283 is a 4-wire, 1.8V, embedded SDIO WLAN device with an external IRQ line,
and power-controlled by a GPIO-based fixed regulator.

Based on the patch for zoom by Ohad Ben-Cohen <ohad@wizery.com>

Signed-off-by: Vishal Mahaveer <vishalm@ti.com>
[tony@atomide.com: improved formatting a bit]
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 5e03ddb0eb17..e5e8bbb00359 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -22,6 +22,7 @@
 #include <linux/i2c/twl.h>
 #include <linux/gpio_keys.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/fixed.h>
 #include <linux/leds.h>
 #include <linux/leds_pwm.h>
 
@@ -37,6 +38,7 @@
 #include <plat/mmc.h>
 #include <plat/omap4-keypad.h>
 #include <video/omapdss.h>
+#include <linux/wl12xx.h>
 
 #include "mux.h"
 #include "hsmmc.h"
@@ -51,6 +53,9 @@
 #define HDMI_GPIO_HPD 60 /* Hot plug pin for HDMI */
 #define HDMI_GPIO_LS_OE 41 /* Level shifter for HDMI */
 
+#define GPIO_WIFI_PMENA         54
+#define GPIO_WIFI_IRQ           53
+
 static const int sdp4430_keymap[] = {
         KEY(0, 0, KEY_E),
         KEY(0, 1, KEY_R),
@@ -326,6 +331,14 @@ static struct omap2_hsmmc_info mmc[] = {
                 .gpio_cd        = -EINVAL,
                 .gpio_wp        = -EINVAL,
         },
+        {
+                .mmc            = 5,
+                .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
+                .gpio_cd        = -EINVAL,
+                .gpio_wp        = -EINVAL,
+                .ocr_mask       = MMC_VDD_165_195,
+                .nonremovable   = true,
+        },
         {}      /* Terminator */
 };
 
@@ -337,6 +350,37 @@ static struct regulator_consumer_supply sdp4430_vmmc_supply[] = {
         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 };
 
+static struct regulator_consumer_supply omap4_sdp4430_vmmc5_supply = {
+        .supply = "vmmc",
+        .dev_name = "omap_hsmmc.4",
+};
+
+static struct regulator_init_data sdp4430_vmmc5 = {
+        .constraints = {
+                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies = 1,
+        .consumer_supplies = &omap4_sdp4430_vmmc5_supply,
+};
+
+static struct fixed_voltage_config sdp4430_vwlan = {
+        .supply_name            = "vwl1271",
+        .microvolts             = 1800000, /* 1.8V */
+        .gpio                   = GPIO_WIFI_PMENA,
+        .startup_delay          = 70000, /* 70msec */
+        .enable_high            = 1,
+        .enabled_at_boot        = 0,
+        .init_data              = &sdp4430_vmmc5,
+};
+
+static struct platform_device omap_vwlan_device = {
+        .name           = "reg-fixed-voltage",
+        .id             = 1,
+        .dev = {
+                .platform_data = &sdp4430_vwlan,
+        },
+};
+
 static int omap4_twl6030_hsmmc_late_init(struct device *dev)
 {
         int ret = 0;
@@ -511,6 +555,7 @@ static struct regulator_init_data sdp4430_vusb = {
 static struct regulator_init_data sdp4430_clk32kg = {
         .constraints = {
                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
+                .always_on              = true,
         },
 };
 
@@ -715,6 +760,41 @@ static inline void board_serial_init(void)
 }
  #endif
 
+static void omap4_sdp4430_wifi_mux_init(void)
+{
+        omap_mux_init_gpio(GPIO_WIFI_IRQ, OMAP_PIN_INPUT |
+                                OMAP_PIN_OFF_WAKEUPENABLE);
+        omap_mux_init_gpio(GPIO_WIFI_PMENA, OMAP_PIN_OUTPUT);
+
+        omap_mux_init_signal("sdmmc5_cmd.sdmmc5_cmd",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_signal("sdmmc5_clk.sdmmc5_clk",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_signal("sdmmc5_dat0.sdmmc5_dat0",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_signal("sdmmc5_dat1.sdmmc5_dat1",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_signal("sdmmc5_dat2.sdmmc5_dat2",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+        omap_mux_init_signal("sdmmc5_dat3.sdmmc5_dat3",
+                                OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP);
+
+}
+
+static struct wl12xx_platform_data omap4_sdp4430_wlan_data __initdata = {
+        .irq = OMAP_GPIO_IRQ(GPIO_WIFI_IRQ),
+        .board_ref_clock = WL12XX_REFCLOCK_26,
+        .board_tcxo_clock = WL12XX_TCXOCLOCK_26,
+};
+
+static void omap4_sdp4430_wifi_init(void)
+{
+        omap4_sdp4430_wifi_mux_init();
+        if (wl12xx_set_platform_data(&omap4_sdp4430_wlan_data))
+                pr_err("Error setting wl12xx data\n");
+        platform_device_register(&omap_vwlan_device);
+}
+
 static void __init omap_4430sdp_init(void)
 {
         int status;
@@ -731,6 +811,7 @@ static void __init omap_4430sdp_init(void)
         omap_sfh7741prox_init();
         platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices));
         board_serial_init();
+        omap4_sdp4430_wifi_init();
         omap4_twl6030_hsmmc_init(mmc);
 
         usb_musb_init(&musb_board_data);