aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-at91/leds.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-at91/leds.c')
-rw-r--r--arch/arm/mach-at91/leds.c120
1 files changed, 26 insertions, 94 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c
index 9cdcda500fe..77c4d8fd03f 100644
--- a/arch/arm/mach-at91/leds.c
+++ b/arch/arm/mach-at91/leds.c
@@ -9,28 +9,27 @@
* 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 <asm/mach-types.h>
-#include <asm/arch/board.h>
-#include <asm/arch/gpio.h>
+#include "board.h"
+#include "gpio.h"
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_NEW_LEDS)
-#include <linux/platform_device.h>
-
/*
* New cross-platform LED support.
*/
static struct gpio_led_platform_data led_data;
-static struct platform_device at91_leds = {
+static struct platform_device at91_gpio_leds_device = {
.name = "leds-gpio",
.id = -1,
.dev.platform_data = &led_data,
@@ -48,7 +47,7 @@ void __init at91_gpio_leds(struct gpio_led *leds, int nr)
led_data.leds = leds;
led_data.num_leds = nr;
- platform_device_register(&at91_leds);
+ platform_device_register(&at91_gpio_leds_device);
}
#else
@@ -58,104 +57,37 @@ void __init at91_gpio_leds(struct gpio_led *leds, int nr) {}
/* ------------------------------------------------------------------------- */
-#if defined(CONFIG_LEDS)
-
-#include <asm/leds.h>
-
-/*
- * Old ARM-specific LED framework; not fully functional when generic time is
- * in use.
- */
-
-static u8 at91_leds_cpu;
-static u8 at91_leds_timer;
-
-static inline void at91_led_on(unsigned int led)
-{
- at91_set_gpio_value(led, 0);
-}
-
-static inline void at91_led_off(unsigned int led)
-{
- at91_set_gpio_value(led, 1);
-}
-
-static inline void at91_led_toggle(unsigned int led)
-{
- unsigned long is_off = at91_get_gpio_value(led);
- if (is_off)
- at91_led_on(led);
- else
- at91_led_off(led);
-}
-
+#if defined (CONFIG_LEDS_ATMEL_PWM)
/*
- * Handle LED events.
+ * PWM Leds
*/
-static void at91_leds_event(led_event_t evt)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- switch(evt) {
- case led_start: /* System startup */
- at91_led_on(at91_leds_cpu);
- break;
-
- case led_stop: /* System stop / suspend */
- at91_led_off(at91_leds_cpu);
- break;
-
-#ifdef CONFIG_LEDS_TIMER
- case led_timer: /* Every 50 timer ticks */
- at91_led_toggle(at91_leds_timer);
- break;
-#endif
-
-#ifdef CONFIG_LEDS_CPU
- case led_idle_start: /* Entering idle state */
- at91_led_off(at91_leds_cpu);
- break;
-
- case led_idle_end: /* Exit idle state */
- at91_led_on(at91_leds_cpu);
- break;
-#endif
-
- default:
- break;
- }
-
- local_irq_restore(flags);
-}
+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,
+};
-static int __init leds_init(void)
+void __init at91_pwm_leds(struct gpio_led *leds, int nr)
{
- if (!at91_leds_timer || !at91_leds_cpu)
- return -ENODEV;
-
- leds_event = at91_leds_event;
-
- leds_event(led_start);
- return 0;
-}
+ int i;
+ u32 pwm_mask = 0;
-__initcall(leds_init);
+ if (!nr)
+ return;
+ for (i = 0; i < nr; i++)
+ pwm_mask |= (1 << leds[i].gpio);
-void __init at91_init_leds(u8 cpu_led, u8 timer_led)
-{
- /* Enable GPIO to access the LEDs */
- at91_set_gpio_output(cpu_led, 1);
- at91_set_gpio_output(timer_led, 1);
+ pwm_led_data.leds = leds;
+ pwm_led_data.num_leds = nr;
- at91_leds_cpu = cpu_led;
- at91_leds_timer = timer_led;
+ at91_add_device_pwm(pwm_mask);
+ platform_device_register(&at91_pwm_leds_device);
}
-
#else
-void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
+void __init at91_pwm_leds(struct gpio_led *leds, int nr){}
#endif