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authorHamish Guthrie <hcg@openwrt.org>2008-07-08 06:10:59 +0000
committerHamish Guthrie <hcg@openwrt.org>2008-07-08 06:10:59 +0000
commit22754b63e7ac756b14d753fc61c6795004f79690 (patch)
treecf4d4a5b6eac561ab8d5de6712788df30ca2e4f5 /target/linux/at91/patches-2.6.25/002-led-driver.patch
parentefd3eac055b1504ab362f2cc2874539a63d7f7bc (diff)
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Added gpio and led drivers for 2.6.25.10 kernel
SVN-Revision: 11745
Diffstat (limited to 'target/linux/at91/patches-2.6.25/002-led-driver.patch')
-rw-r--r--target/linux/at91/patches-2.6.25/002-led-driver.patch171
1 files changed, 171 insertions, 0 deletions
diff --git a/target/linux/at91/patches-2.6.25/002-led-driver.patch b/target/linux/at91/patches-2.6.25/002-led-driver.patch
new file mode 100644
index 0000000000..8c08c89d00
--- /dev/null
+++ b/target/linux/at91/patches-2.6.25/002-led-driver.patch
@@ -0,0 +1,171 @@
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/at91rm9200_devices.c linux-2.6.25.10/arch/arm/mach-at91/at91rm9200_devices.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/at91rm9200_devices.c 2008-07-06 09:01:53.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/at91rm9200_devices.c 2008-07-06 09:47:54.000000000 +0200
+@@ -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
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/Makefile linux-2.6.25.10/arch/arm/mach-at91/Makefile
+--- linux-2.6.25.10.old/arch/arm/mach-at91/Makefile 2008-07-06 09:01:54.000000000 +0200
++++ linux-2.6.25.10/arch/arm/mach-at91/Makefile 2008-07-06 09:45:08.000000000 +0200
+@@ -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
+diff -urN linux-2.6.25.10.old/arch/arm/mach-at91/vlink_leds.c linux-2.6.25.10/arch/arm/mach-at91/vlink_leds.c
+--- linux-2.6.25.10.old/arch/arm/mach-at91/vlink_leds.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.25.10/arch/arm/mach-at91/vlink_leds.c 2008-07-06 09:40:37.000000000 +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);
+diff -urN linux-2.6.25.10.old/include/asm-arm/arch-at91/board.h linux-2.6.25.10/include/asm-arm/arch-at91/board.h
+--- linux-2.6.25.10.old/include/asm-arm/arch-at91/board.h 2008-07-06 09:01:54.000000000 +0200
++++ linux-2.6.25.10/include/asm-arm/arch-at91/board.h 2008-07-06 09:56:31.000000000 +0200
+@@ -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);
+