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--- 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_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-$(CONFIG_MACH_AT91EB01) += board-eb01.o
# Drivers
-obj-y += leds.o
+ifeq ($(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 @@
/* 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);
|
