diff options
| author | Andrew Victor <linux@maxim.org.za> | 2008-09-21 21:31:16 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-21 22:58:38 +0100 |
| commit | a7307bf22557e1e029df0ea6f2a2973de4d9c135 (patch) | |
| tree | c1db7709cc089b3494ed6a0e97ca0dd5dbeece88 /arch/arm/mach-at91/leds.c | |
| parent | bb1ad68b96a68e577a87ad62fe1aa26d052a52b5 (diff) | |
| download | linux-a7307bf22557e1e029df0ea6f2a2973de4d9c135.tar.bz2 | |
[ARM] 5259/2: [AT91] PWM LEDs on AT91SAM9263-EK
Use the PWM controller and leds-atmel-pwm.c driver to drive a LED on
the Atmel AT91SAM9263-EK board.
Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/leds.c')
| -rw-r--r-- | arch/arm/mach-at91/leds.c | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c index fec03c59ff94..ff76d59392cc 100644 --- a/arch/arm/mach-at91/leds.c +++ b/arch/arm/mach-at91/leds.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/platform_device.h> #include <mach/board.h> #include <mach/gpio.h> @@ -21,8 +22,6 @@ #if defined(CONFIG_NEW_LEDS) -#include <linux/platform_device.h> - /* * New cross-platform LED support. */ @@ -57,6 +56,44 @@ void __init at91_gpio_leds(struct gpio_led *leds, int nr) {} /* ------------------------------------------------------------------------- */ +#if defined (CONFIG_LEDS_ATMEL_PWM) + +/* + * PWM Leds + */ + +static struct gpio_led_platform_data pwm_led_data; + +static struct platform_device at91_pwm_leds = { + .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); +} +#else +void __init at91_pwm_leds(struct gpio_led *leds, int nr){} +#endif + + +/* ------------------------------------------------------------------------- */ + #if defined(CONFIG_LEDS) #include <asm/leds.h> |