Patched in Tegra support.

1 files changed, 107 insertions, 2 deletions

diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c
index 3e22978b554..0415a839e1a 100644
--- a/arch/arm/mach-at91/leds.c
+++ b/arch/arm/mach-at91/leds.c
@@ -9,13 +9,13 @@
  * 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 <mach/board.h>
+#include <mach/gpio.h>
 
 
 /* ------------------------------------------------------------------------- */
@@ -90,3 +90,108 @@ void __init at91_pwm_leds(struct gpio_led *leds, int nr)
 #else
 void __init at91_pwm_leds(struct gpio_led *leds, int nr){}
 #endif
+
+
+/* ------------------------------------------------------------------------- */
+
+#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);
+}
+
+
+/*
+ * Handle LED events.
+ */
+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 int __init leds_init(void)
+{
+        if (!at91_leds_timer || !at91_leds_cpu)
+                return -ENODEV;
+
+        leds_event = at91_leds_event;
+
+        leds_event(led_start);
+        return 0;
+}
+
+__initcall(leds_init);
+
+
+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);
+
+        at91_leds_cpu   = cpu_led;
+        at91_leds_timer = timer_led;
+}
+
+#else
+void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
+#endif