aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-sa1100/leds-cerf.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-sa1100/leds-cerf.c')
-rw-r--r--arch/arm/mach-sa1100/leds-cerf.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/leds-cerf.c b/arch/arm/mach-sa1100/leds-cerf.c
new file mode 100644
index 0000000..f6635a2
--- /dev/null
+++ b/arch/arm/mach-sa1100/leds-cerf.c
@@ -0,0 +1,111 @@
+/*
+ * linux/arch/arm/mach-sa1100/leds-cerf.c
+ *
+ * Author: ???
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+
+#include "leds.h"
+
+
+#define LED_STATE_ENABLED 1
+#define LED_STATE_CLAIMED 2
+
+static unsigned int led_state;
+static unsigned int hw_led_state;
+
+#define LED_D0 GPIO_GPIO(0)
+#define LED_D1 GPIO_GPIO(1)
+#define LED_D2 GPIO_GPIO(2)
+#define LED_D3 GPIO_GPIO(3)
+#define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3)
+
+void cerf_leds_event(led_event_t evt)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ switch (evt) {
+ case led_start:
+ hw_led_state = LED_MASK;
+ led_state = LED_STATE_ENABLED;
+ break;
+
+ case led_stop:
+ led_state &= ~LED_STATE_ENABLED;
+ break;
+
+ case led_claim:
+ led_state |= LED_STATE_CLAIMED;
+ hw_led_state = LED_MASK;
+ break;
+ case led_release:
+ led_state &= ~LED_STATE_CLAIMED;
+ hw_led_state = LED_MASK;
+ break;
+
+#ifdef CONFIG_LEDS_TIMER
+ case led_timer:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state ^= LED_D0;
+ break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+ case led_idle_start:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_D1;
+ break;
+
+ case led_idle_end:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_D1;
+ break;
+#endif
+ case led_green_on:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_D2;
+ break;
+
+ case led_green_off:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_D2;
+ break;
+
+ case led_amber_on:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_D3;
+ break;
+
+ case led_amber_off:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_D3;
+ break;
+
+ case led_red_on:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_D1;
+ break;
+
+ case led_red_off:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_D1;
+ break;
+
+ default:
+ break;
+ }
+
+ if (led_state & LED_STATE_ENABLED) {
+ GPSR = hw_led_state;
+ GPCR = hw_led_state ^ LED_MASK;
+ }
+
+ local_irq_restore(flags);
+}