omap: zoom: add mmc3/wl1271 device support

Add MMC3 support on ZOOM, which has the wl1271 device hardwired to.

The wl1271 is a 4-wire, 1.8V, embedded SDIO WLAN device with an
external IRQ line, and power-controlled by a GPIO-based fixed regulator.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

arch/arm/mach-omap2/board-zoom-peripherals.c

@@ -17,6 +17,7 @@
 #include <linux/i2c/twl.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/fixed.h>
+#include <linux/wl12xx.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -29,6 +30,7 @@
 #include "hsmmc.h"
 
 #define OMAP_ZOOM_WLAN_PMENA_GPIO	(101)
+#define OMAP_ZOOM_WLAN_IRQ_GPIO		(162)
 
 /* Zoom2 has Qwerty keyboard*/
 static int board_keymap[] = {
@@ -185,6 +187,12 @@ static struct platform_device omap_vwlan_device = {
 	},
 };
 
+struct wl12xx_platform_data omap_zoom_wlan_data __initdata = {
+	.irq = OMAP_GPIO_IRQ(OMAP_ZOOM_WLAN_IRQ_GPIO),
+	/* ZOOM ref clock is 26 MHz */
+	.board_ref_clock = 1,
+};
+
 static struct omap2_hsmmc_info mmc[] __initdata = {
 	{
 		.name		= "external",
@@ -202,6 +210,14 @@ static struct omap2_hsmmc_info mmc[] __initdata = {
 		.nonremovable	= true,
 		.power_saving	= true,
 	},
+	{
+		.name		= "wl1271",
+		.mmc		= 3,
+		.wires		= 4,
+		.gpio_wp	= -EINVAL,
+		.gpio_cd	= -EINVAL,
+		.nonremovable	= true,
+	},
 	{}      /* Terminator */
 };
 
@@ -313,6 +329,9 @@ static void enable_board_wakeup_source(void)
 
 void __init zoom_peripherals_init(void)
 {
+	if (wl12xx_set_platform_data(&omap_zoom_wlan_data))
+		pr_err("error setting wl12xx data\n");
+
 	omap_i2c_init();
 	platform_device_register(&omap_vwlan_device);
 	usb_musb_init(&musb_board_data);