diff options
Diffstat (limited to 'arch/arm/mach-at91/leds.c')
| -rw-r--r-- | arch/arm/mach-at91/leds.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c new file mode 100644 index 00000000000..77c4d8fd03f --- /dev/null +++ b/arch/arm/mach-at91/leds.c @@ -0,0 +1,93 @@ +/* + * LED driver for Atmel AT91-based boards. + * + * Copyright (C) SAN People (Pty) Ltd + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. +*/ + +#include <linux/gpio.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> + +#include "board.h" +#include "gpio.h" + + +/* ------------------------------------------------------------------------- */ + +#if defined(CONFIG_NEW_LEDS) + +/* + * New cross-platform LED support. + */ + +static struct gpio_led_platform_data led_data; + +static struct platform_device at91_gpio_leds_device = { + .name = "leds-gpio", + .id = -1, + .dev.platform_data = &led_data, +}; + +void __init at91_gpio_leds(struct gpio_led *leds, int nr) +{ + int i; + + if (!nr) + return; + + for (i = 0; i < nr; i++) + at91_set_gpio_output(leds[i].gpio, leds[i].active_low); + + led_data.leds = leds; + led_data.num_leds = nr; + platform_device_register(&at91_gpio_leds_device); +} + +#else +void __init at91_gpio_leds(struct gpio_led *leds, int nr) {} +#endif + + +/* ------------------------------------------------------------------------- */ + +#if defined (CONFIG_LEDS_ATMEL_PWM) + +/* + * PWM Leds + */ + +static struct gpio_led_platform_data pwm_led_data; + +static struct platform_device at91_pwm_leds_device = { + .name = "leds-atmel-pwm", + .id = -1, + .dev.platform_data = &pwm_led_data, +}; + +void __init at91_pwm_leds(struct gpio_led *leds, int nr) +{ + int i; + u32 pwm_mask = 0; + + if (!nr) + return; + + for (i = 0; i < nr; i++) + pwm_mask |= (1 << leds[i].gpio); + + pwm_led_data.leds = leds; + pwm_led_data.num_leds = nr; + + at91_add_device_pwm(pwm_mask); + platform_device_register(&at91_pwm_leds_device); +} +#else +void __init at91_pwm_leds(struct gpio_led *leds, int nr){} +#endif |
