1 files changed, 98 insertions, 14 deletions

diff --git a/arch/arm/mach-footbridge/netwinder-hw.c b/arch/arm/mach-footbridge/netwinder-hw.c
index cac9f67e7da7..d2d14339c6c4 100644
--- a/arch/arm/mach-footbridge/netwinder-hw.c
+++ b/arch/arm/mach-footbridge/netwinder-hw.c
@@ -12,9 +12,10 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
 
 #include <asm/hardware/dec21285.h>
-#include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/setup.h>
 #include <asm/system_misc.h>
@@ -27,13 +28,6 @@
 #define GP1_IO_BASE             0x338
 #define GP2_IO_BASE             0x33a
 
-
-#ifdef CONFIG_LEDS
-#define DEFAULT_LEDS    0
-#else
-#define DEFAULT_LEDS    GPIO_GREEN_LED
-#endif
-
 /*
  * Winbond WB83977F accessibility stuff
  */
@@ -611,15 +605,9 @@ static void __init rwa010_init(void)
 static int __init nw_hw_init(void)
 {
         if (machine_is_netwinder()) {
-                unsigned long flags;
-
                 wb977_init();
                 cpld_init();
                 rwa010_init();
-
-                raw_spin_lock_irqsave(&nw_gpio_lock, flags);
-                nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);
-                raw_spin_unlock_irqrestore(&nw_gpio_lock, flags);
         }
         return 0;
 }
@@ -672,6 +660,102 @@ static void netwinder_restart(char mode, const char *cmd)
         }
 }
 
+/* LEDs */
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+struct netwinder_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;
+} netwinder_leds[] = {
+        { "netwinder:green", "heartbeat", },
+        { "netwinder:red", "cpu0", },
+};
+
+/*
+ * The LED control in Netwinder is reversed:
+ *  - setting bit means turn off LED
+ *  - clearing bit means turn on LED
+ */
+static void netwinder_led_set(struct led_classdev *cdev,
+                enum led_brightness b)
+{
+        struct netwinder_led *led = container_of(cdev,
+                        struct netwinder_led, cdev);
+        unsigned long flags;
+        u32 reg;
+
+        spin_lock_irqsave(&nw_gpio_lock, flags);
+        reg = nw_gpio_read();
+        if (b != LED_OFF)
+                reg &= ~led->mask;
+        else
+                reg |= led->mask;
+        nw_gpio_modify_op(led->mask, reg);
+        spin_unlock_irqrestore(&nw_gpio_lock, flags);
+}
+
+static enum led_brightness netwinder_led_get(struct led_classdev *cdev)
+{
+        struct netwinder_led *led = container_of(cdev,
+                        struct netwinder_led, cdev);
+        unsigned long flags;
+        u32 reg;
+
+        spin_lock_irqsave(&nw_gpio_lock, flags);
+        reg = nw_gpio_read();
+        spin_unlock_irqrestore(&nw_gpio_lock, flags);
+
+        return (reg & led->mask) ? LED_OFF : LED_FULL;
+}
+
+static int __init netwinder_leds_init(void)
+{
+        int i;
+
+        if (!machine_is_netwinder())
+                return -ENODEV;
+
+        for (i = 0; i < ARRAY_SIZE(netwinder_leds); i++) {
+                struct netwinder_led *led;
+
+                led = kzalloc(sizeof(*led), GFP_KERNEL);
+                if (!led)
+                        break;
+
+                led->cdev.name = netwinder_leds[i].name;
+                led->cdev.brightness_set = netwinder_led_set;
+                led->cdev.brightness_get = netwinder_led_get;
+                led->cdev.default_trigger = netwinder_leds[i].trigger;
+
+                if (i == 0)
+                        led->mask = GPIO_GREEN_LED;
+                else
+                        led->mask = GPIO_RED_LED;
+
+                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(netwinder_leds_init);
+#endif
+
 MACHINE_START(NETWINDER, "Rebel-NetWinder")
         /* Maintainer: Russell King/Rebel.com */
         .atag_offset    = 0x100,