[PATCH 1/1] led-gpio: add bicolor led support

[Sascha Hauer]

On Fri, Nov 16, 2012 at 09:17:23PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> those led can have 2 colors but one at a time otherwise they are black
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>

Applied, thanks

Sascha

> ---
>  drivers/led/Kconfig    |    4 ++++
>  drivers/led/led-gpio.c |   47 +++++++++++++++++++++++++++++++++++++++++++++++
>  include/led.h          |   20 ++++++++++++++++++++
>  3 files changed, 71 insertions(+)
> 
> diff --git a/drivers/led/Kconfig b/drivers/led/Kconfig
> index 106093b..8ca6ab8 100644
> --- a/drivers/led/Kconfig
> +++ b/drivers/led/Kconfig
> @@ -11,6 +11,10 @@ config LED_GPIO_RGB
>  	bool "gpio rgb LED support"
>  	depends on LED_GPIO
>  
> +config LED_GPIO_BICOLOR
> +	bool "gpio bicolor LED support"
> +	depends on LED_GPIO
> +
>  config LED_TRIGGERS
>  	select POLLER
>  	bool "LED triggers support"
> diff --git a/drivers/led/led-gpio.c b/drivers/led/led-gpio.c
> index 711146b..c78ef9e 100644
> --- a/drivers/led/led-gpio.c
> +++ b/drivers/led/led-gpio.c
> @@ -52,6 +52,53 @@ void led_gpio_unregister(struct gpio_led *led)
>  	led_unregister(&led->led);
>  }
>  
> +#ifdef CONFIG_LED_GPIO_BICOLOR
> +static void led_gpio_bicolor_set(struct led *led, unsigned int value)
> +{
> +	struct gpio_bicolor_led *bi = container_of(led, struct gpio_bicolor_led, led);
> +	int al = bi->active_low;
> +
> +	switch (value) {
> +	case 0:
> +		gpio_direction_output(bi->gpio_c0, al);
> +		gpio_direction_output(bi->gpio_c1, al);
> +		break;
> +	case 1:
> +		gpio_direction_output(bi->gpio_c0, !al);
> +		gpio_direction_output(bi->gpio_c1, al);
> +		break;
> +	case 2:
> +		gpio_direction_output(bi->gpio_c0, al);
> +		gpio_direction_output(bi->gpio_c1, !al);
> +		break;
> +	}
> +}
> +
> +/**
> + * led_gpio_bicolor_register - register three gpios as a bicolor LED
> + * @param led	The gpio bicolor LED
> + *
> + * This function registers three gpios as a bicolor LED. led->gpio[rg]
> + * should be initialized to the gpios to control.
> + */
> +int led_gpio_bicolor_register(struct gpio_bicolor_led *led)
> +{
> +	led->led.set = led_gpio_bicolor_set;
> +	led->led.max_value = 2;
> +
> +	return led_register(&led->led);
> +}
> +
> +/**
> + * led_gpio_bicolor_unregister - remove a gpio controlled bicolor LED from the framework
> + * @param led	The gpio LED
> + */
> +void led_gpio_bicolor_unregister(struct gpio_bicolor_led *led)
> +{
> +	led_unregister(&led->led);
> +}
> +#endif
> +
>  #ifdef CONFIG_LED_GPIO_RGB
>  
>  static void led_gpio_rgb_set(struct led *led, unsigned int value)
> diff --git a/include/led.h b/include/led.h
> index 9ec1f0d..dd551fe 100644
> --- a/include/led.h
> +++ b/include/led.h
> @@ -65,6 +65,12 @@ struct gpio_led {
>  	struct led led;
>  };
>  
> +struct gpio_bicolor_led {
> +	int gpio_c0, gpio_c1;
> +	bool active_low;
> +	struct led led;
> +};
> +
>  struct gpio_rgb_led {
>  	int gpio_r, gpio_g, gpio_b;
>  	bool active_low;
> @@ -85,6 +91,20 @@ static inline void led_gpio_unregister(struct gpio_led *led)
>  }
>  #endif
>  
> +#ifdef CONFIG_LED_GPIO_BICOLOR
> +int led_gpio_bicolor_register(struct gpio_bicolor_led *led);
> +void led_gpio_bicolor_unregister(struct gpio_bicolor_led *led);
> +#else
> +static inline int led_gpio_bicolor_register(struct gpio_bicolor_led *led)
> +{
> +	return -ENOSYS;
> +}
> +
> +static inline void led_gpio_bicolor_unregister(struct gpio_bicolor_led *led)
> +{
> +}
> +#endif
> +
>  #ifdef CONFIG_LED_GPIO_RGB
>  int led_gpio_rgb_register(struct gpio_rgb_led *led);
>  void led_gpio_rgb_unregister(struct gpio_led *led);
> -- 
> 1.7.10.4
> 
> 
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