[U-Boot] [PATCH 2/6 v2] misc: add gpio based status led driver

Scott McNutt
2010-05-25T19:39:47Z

Applied to:

git://git.denx.de/u-boot-nios.git next

Thanks,
--Scott

Thomas Chou wrote:
> This patch adds a status led driver followed the GPIO access
> conventions of Linux. The led mask is used to specify the gpio pin.
>
> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
> ---
> v2: moved to drivers/misc.
>
> drivers/misc/Makefile | 1 +
> drivers/misc/gpio_led.c | 30 ++++++++++++++++++++++++++++++
> 2 files changed, 31 insertions(+), 0 deletions(-)
> create mode 100644 drivers/misc/gpio_led.c
>
> diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
> index f6df60f..55ff17f 100644
> --- a/drivers/misc/Makefile
> +++ b/drivers/misc/Makefile
> @@ -28,6 +28,7 @@ LIB := $(obj)libmisc.a
> COBJS-$(CONFIG_ALI152X) += ali512x.o
> COBJS-$(CONFIG_DS4510) += ds4510.o
> COBJS-$(CONFIG_FSL_LAW) += fsl_law.o
> +COBJS-$(CONFIG_GPIO_LED) += gpio_led.o
> COBJS-$(CONFIG_NS87308) += ns87308.o
> COBJS-$(CONFIG_STATUS_LED) += status_led.o
> COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o
> diff --git a/drivers/misc/gpio_led.c b/drivers/misc/gpio_led.c
> new file mode 100644
> index 0000000..acd6a90
> --- /dev/null
> +++ b/drivers/misc/gpio_led.c
> @@ -0,0 +1,30 @@
> +/*
> + * Status LED driver based on GPIO access conventions of Linux
> + *
> + * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <common.h>
> +#include <status_led.h>
> +#include <asm/gpio.h>
> +
> +/* assume led is active low */
> +
> +void __led_init(led_id_t mask, int state)
> +{
> + gpio_direction_output(mask, (state == STATUS_LED_ON) ? 0 : 1);
> +}
> +
> +void __led_set(led_id_t mask, int state)
> +{
> + gpio_set_value(mask, (state == STATUS_LED_ON) ? 0 : 1);
> +}
> +
> +void __led_toggle(led_id_t mask)
> +{
> + gpio_set_value(mask, !gpio_get_value(mask));
> +}