1 files changed, 115 insertions, 0 deletions

diff --git a/arch/arm/mach-omap1/leds-osk.c b/arch/arm/mach-omap1/leds-osk.c
new file mode 100644
index 00000000000..499d7ad8697
--- /dev/null
+++ b/arch/arm/mach-omap1/leds-osk.c
@@ -0,0 +1,115 @@
+/*
+ * linux/arch/arm/mach-omap1/leds-osk.c
+ *
+ * LED driver for OSK with optional Mistral QVGA board
+ */
+#include <linux/init.h>
+
+#include <mach/hardware.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+
+#include <mach/gpio.h>
+
+#include "leds.h"
+
+
+#define LED_STATE_ENABLED       (1 << 0)
+#define LED_STATE_CLAIMED       (1 << 1)
+static u8 led_state;
+
+#define TIMER_LED               (1 << 3)        /* Mistral board */
+#define IDLE_LED                (1 << 4)        /* Mistral board */
+static u8 hw_led_state;
+
+
+#ifdef  CONFIG_OMAP_OSK_MISTRAL
+
+/* For now, all system indicators require the Mistral board, since that
+ * LED can be manipulated without a task context.  This LED is either red,
+ * or green, but not both; it can't give the full "disco led" effect.
+ */
+
+#define GPIO_LED_RED            3
+#define GPIO_LED_GREEN          OMAP_MPUIO(4)
+
+static void mistral_setled(void)
+{
+        int     red = 0;
+        int     green = 0;
+
+        if (hw_led_state & TIMER_LED)
+                red = 1;
+        else if (hw_led_state & IDLE_LED)
+                green = 1;
+        /* else both sides are disabled */
+
+        gpio_set_value(GPIO_LED_GREEN, green);
+        gpio_set_value(GPIO_LED_RED, red);
+}
+
+#endif
+
+void osk_leds_event(led_event_t evt)
+{
+        unsigned long   flags;
+        u16             leds;
+
+        local_irq_save(flags);
+
+        if (!(led_state & LED_STATE_ENABLED) && evt != led_start)
+                goto done;
+
+        leds = hw_led_state;
+        switch (evt) {
+        case led_start:
+                led_state |= LED_STATE_ENABLED;
+                hw_led_state = 0;
+                leds = ~0;
+                break;
+
+        case led_halted:
+        case led_stop:
+                led_state &= ~LED_STATE_ENABLED;
+                hw_led_state = 0;
+                break;
+
+        case led_claim:
+                led_state |= LED_STATE_CLAIMED;
+                hw_led_state = 0;
+                leds = ~0;
+                break;
+
+        case led_release:
+                led_state &= ~LED_STATE_CLAIMED;
+                hw_led_state = 0;
+                break;
+
+#ifdef  CONFIG_OMAP_OSK_MISTRAL
+
+        case led_timer:
+                hw_led_state ^= TIMER_LED;
+                mistral_setled();
+                break;
+
+        case led_idle_start:    /* idle == off */
+                hw_led_state &= ~IDLE_LED;
+                mistral_setled();
+                break;
+
+        case led_idle_end:
+                hw_led_state |= IDLE_LED;
+                mistral_setled();
+                break;
+
+#endif  /* CONFIG_OMAP_OSK_MISTRAL */
+
+        default:
+                break;
+        }
+
+        leds ^= hw_led_state;
+
+done:
+        local_irq_restore(flags);
+}