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-rw-r--r--arch/arm/mach-footbridge/ebsa285.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c
index 27716a7e5fc..b09551ef89c 100644
--- a/arch/arm/mach-footbridge/ebsa285.c
+++ b/arch/arm/mach-footbridge/ebsa285.c
@@ -5,6 +5,8 @@
*/
#include <linux/init.h>
#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
#include <asm/hardware/dec21285.h>
#include <asm/mach-types.h>
@@ -13,6 +15,85 @@
#include "common.h"
+/* LEDs */
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+struct ebsa285_led {
+ struct led_classdev cdev;
+ u8 mask;
+};
+
+/*
+ * The triggers lines up below will only be used if the
+ * LED triggers are compiled in.
+ */
+static const struct {
+ const char *name;
+ const char *trigger;
+} ebsa285_leds[] = {
+ { "ebsa285:amber", "heartbeat", },
+ { "ebsa285:green", "cpu0", },
+ { "ebsa285:red",},
+};
+
+static void ebsa285_led_set(struct led_classdev *cdev,
+ enum led_brightness b)
+{
+ struct ebsa285_led *led = container_of(cdev,
+ struct ebsa285_led, cdev);
+
+ if (b != LED_OFF)
+ *XBUS_LEDS |= led->mask;
+ else
+ *XBUS_LEDS &= ~led->mask;
+}
+
+static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
+{
+ struct ebsa285_led *led = container_of(cdev,
+ struct ebsa285_led, cdev);
+
+ return (*XBUS_LEDS & led->mask) ? LED_FULL : LED_OFF;
+}
+
+static int __init ebsa285_leds_init(void)
+{
+ int i;
+
+ if (machine_is_ebsa285())
+ return -ENODEV;
+
+ /* 3 LEDS All ON */
+ *XBUS_LEDS |= XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
+
+ for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
+ struct ebsa285_led *led;
+
+ led = kzalloc(sizeof(*led), GFP_KERNEL);
+ if (!led)
+ break;
+
+ led->cdev.name = ebsa285_leds[i].name;
+ led->cdev.brightness_set = ebsa285_led_set;
+ led->cdev.brightness_get = ebsa285_led_get;
+ led->cdev.default_trigger = ebsa285_leds[i].trigger;
+ led->mask = BIT(i);
+
+ if (led_classdev_register(NULL, &led->cdev) < 0) {
+ kfree(led);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Since we may have triggers on any subsystem, defer registration
+ * until after subsystem_init.
+ */
+fs_initcall(ebsa285_leds_init);
+#endif
+
MACHINE_START(EBSA285, "EBSA285")
/* Maintainer: Russell King */
.atag_offset = 0x100,