diff options
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.patch | 171 |
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 000000000..8c08c89d0 --- /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); + |