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

[Vasily Khoruzhick <anarsoul-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Friday 15 July 2011 13:24:22 Marc Dietrich wrote:
> This makes the WIFI rfkill gpio available to userspace. On boot,
> WIFI will be unblocked by default.

Take a look on rfkill-gpio driver.

Regards
Vasily

> Signed-off-by: Marc Dietrich <marvin24-Mmb7MZpHnFY@public.gmane.org>
> ---
>  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