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Diffstat (limited to 'target/linux/at91/patches-2.6.22/002-led-driver.patch')
-rw-r--r--target/linux/at91/patches-2.6.22/002-led-driver.patch121
1 files changed, 121 insertions, 0 deletions
diff --git a/target/linux/at91/patches-2.6.22/002-led-driver.patch b/target/linux/at91/patches-2.6.22/002-led-driver.patch
new file mode 100644
index 0000000000..29956f4268
--- /dev/null
+++ b/target/linux/at91/patches-2.6.22/002-led-driver.patch
@@ -0,0 +1,121 @@
+diff -urN linux-2.6.22.1.old/arch/arm/mach-at91/Makefile linux-2.6.22.1/arch/arm/mach-at91/Makefile
+--- linux-2.6.22.1.old/arch/arm/mach-at91/Makefile 2007-07-29 06:46:13.000000000 +0200
++++ linux-2.6.22.1/arch/arm/mach-at91/Makefile 2007-07-29 06:54:19.000000000 +0200
+@@ -53,7 +53,7 @@
+ led-$(CONFIG_MACH_CSB637) += leds.o
+ led-$(CONFIG_MACH_KB9200) += leds.o
+ led-$(CONFIG_MACH_KAFA) += leds.o
+-led-$(CONFIG_MACH_VLINK) += leds.o
++led-$(CONFIG_MACH_VLINK) += vlink_leds.o
+ obj-$(CONFIG_LEDS) += $(led-y)
+
+ # VGA support
+diff -urN linux-2.6.22.1.old/arch/arm/mach-at91/vlink_leds.c linux-2.6.22.1/arch/arm/mach-at91/vlink_leds.c
+--- linux-2.6.22.1.old/arch/arm/mach-at91/vlink_leds.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.1/arch/arm/mach-at91/vlink_leds.c 2007-07-29 06:54:58.000000000 +0200
+@@ -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);