openwrt-owl/target/linux/at91/patches-2.6.25/002-led-driver.patch

--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -717,6 +717,26 @@ static void __init at91_add_device_watch
 static void __init at91_add_device_watchdog(void) {}
 #endif
 
+/* --------------------------------------------------------------------
+ *  LEDs
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_LEDS)
+u8 at91_leds_cpu;
+u8 at91_leds_timer;
+
+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
 
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -60,7 +60,12 @@ obj-$(CONFIG_MACH_AT91CAP9ADK)	+= board-
 obj-$(CONFIG_MACH_AT91EB01)	+= board-eb01.o
 
 # Drivers
-obj-y				+= leds.o
+ifeq ($(CONFIG_MACH_VLINK),y)
+led-$(CONFIG_MACH_VLINK)	+= vlink_leds.o
+else
+led-y				+= leds.o
+endif
+obj-y				+= $(led-y)
 obj-$(CONFIG_FB_S1D13XXX)	+= ics1523.o
 
 # Power Management
--- /dev/null
+++ b/arch/arm/mach-at91/vlink_leds.c
@@ -0,0 +1,105 @@
+/*
+ * LED driver for Atmel AT91-based boards.
+ *
+ *  Copyright (C) SAN People (Pty) Ltd
+ *	Modified for FDL VersaLink Copyright (C) Guthrie Consulting
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <asm/mach-types.h>
+#include <asm/leds.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+
+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);
+		at91_led_off(at91_leds_cpu);
+		}
+	else {
+		at91_led_on(at91_leds_cpu);
+		at91_led_off(led);
+		}
+}
+
+
+/*
+ * Handle LED events.
+ */
+
+/*
+ * VersaLink has a single bi-coloured LED which changes colour when the
+ * polarity is reversed
+ */
+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_toggle(at91_leds_timer);
+		break;
+
+	case led_stop:		/* System stop / suspend */
+		at91_led_toggle(at91_leds_timer);
+		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_toggle(at91_leds_timer);
+		break;
+
+	case led_idle_end:	/* Exit idle state */
+		at91_led_toggle(at91_leds_timer);
+		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);
--- a/include/asm-arm/arch-at91/board.h
+++ b/include/asm-arm/arch-at91/board.h
@@ -162,6 +162,11 @@ extern void __init at91_add_device_ac97(
  /* ISI */
 extern void __init at91_add_device_isi(void);
 
+ /* LEDs */
+extern u8 at91_leds_cpu;
+extern u8 at91_leds_timer;
+extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
+
  /* Touchscreen Controller */
 extern void __init at91_add_device_tsadcc(void);