Added gpio and led drivers for 2.6.25.10 kernel

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11745 3c298f89-4303-0410-b956-a3cf2f4a3e73

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);
+