[PATCH 2/3] ARM: tegra: paz00: export the WIFI rfkill gpio

[Marc Dietrich]

This makes the WIFI rfkill gpio available to userspace. On boot,
WIFI will be unblocked by default.

Signed-off-by: Marc Dietrich <marvin24 at gmx.de>
---
 arch/arm/mach-tegra/board-paz00-pinmux.c |    1 +
 arch/arm/mach-tegra/board-paz00.c        |   16 ++++++++++++++++
 arch/arm/mach-tegra/board-paz00.h        |    6 ++++++
 3 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-tegra/board-paz00-pinmux.c b/arch/arm/mach-tegra/board-paz00-pinmux.c
index bdd2627..c02a48f 100644
--- a/arch/arm/mach-tegra/board-paz00-pinmux.c
+++ b/arch/arm/mach-tegra/board-paz00-pinmux.c
@@ -145,6 +145,7 @@ static struct tegra_gpio_table gpio_table[] = {
 	{ .gpio = TEGRA_GPIO_SD1_WP,	.enable = true },
 	{ .gpio = TEGRA_GPIO_SD1_POWER,	.enable = true },
 	{ .gpio = TEGRA_ULPI_RST,	.enable = true },
+	{ .gpio = TEGRA_WIFI_PWRN,	.enable = true },
 };
 
 void paz00_pinmux_init(void)
diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index 931b06e..0bc652b 100644
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -25,6 +25,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/pda_power.h>
 #include <linux/io.h>
+#include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/i2c-tegra.h>
 #include <linux/platform_data/tegra_usb.h>
@@ -165,6 +166,20 @@ static struct tegra_sdhci_platform_data sdhci_pdata4 = {
 	.is_8bit	= 1,
 };
 
+static void __init paz00_wifi_init(void)
+{
+	int ret;
+
+	/* unlock hw rfkill */
+	ret = gpio_request_one(TEGRA_WIFI_PWRN, GPIOF_OUT_INIT_HIGH,
+		"wifi pwrn");
+	if (ret) {
+		pr_warning("WIFI: could not requestrfkill gpio\n");
+		return;
+	}
+	gpio_export(TEGRA_WIFI_PWRN, 0);
+};
+
 static void __init tegra_paz00_init(void)
 {
 	tegra_clk_init_from_table(paz00_clk_init_table);
@@ -178,6 +193,7 @@ static void __init tegra_paz00_init(void)
 
 	paz00_i2c_init();
 	paz00_usb_init();
+	paz00_wifi_init();
 }
 
 MACHINE_START(PAZ00, "Toshiba AC100 / Dynabook AZ")
diff --git a/arch/arm/mach-tegra/board-paz00.h b/arch/arm/mach-tegra/board-paz00.h
index d4ff39d..5d2849e 100644
--- a/arch/arm/mach-tegra/board-paz00.h
+++ b/arch/arm/mach-tegra/board-paz00.h
@@ -17,11 +17,17 @@
 #ifndef _MACH_TEGRA_BOARD_PAZ00_H
 #define _MACH_TEGRA_BOARD_PAZ00_H
 
+/* SDCARD */
 #define TEGRA_GPIO_SD1_CD		TEGRA_GPIO_PV5
 #define TEGRA_GPIO_SD1_WP		TEGRA_GPIO_PH1
 #define TEGRA_GPIO_SD1_POWER		TEGRA_GPIO_PT3
+
+/* ULPI */
 #define TEGRA_ULPI_RST			TEGRA_GPIO_PV0
 
+/* WIFI */
+#define TEGRA_WIFI_PWRN			TEGRA_GPIO_PK5
+
 void paz00_pinmux_init(void);
 
 #endif
-- 
1.7.4.1