diff options
| -rw-r--r-- | arch/arm/Kconfig | 53 | ||||
| -rw-r--r-- | arch/arm/include/asm/leds.h | 50 | ||||
| -rw-r--r-- | arch/arm/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/leds.c | 121 | ||||
| -rw-r--r-- | arch/arm/kernel/process.c | 6 | ||||
| -rw-r--r-- | arch/arm/kernel/time.c | 17 |
6 files changed, 3 insertions, 245 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a91009c61870..dc57d3792359 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1739,59 +1739,6 @@ config FORCE_MAX_ZONEORDER This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages. -config LEDS - bool "Timer and CPU usage LEDs" - depends on ARCH_CDB89712 || ARCH_EBSA110 || \ - ARCH_EBSA285 || ARCH_INTEGRATOR || \ - ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ - ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ - ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ - ARCH_AT91 || ARCH_DAVINCI || \ - ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW - help - If you say Y here, the LEDs on your machine will be used - to provide useful information about your current system status. - - If you are compiling a kernel for a NetWinder or EBSA-285, you will - be able to select which LEDs are active using the options below. If - you are compiling a kernel for the EBSA-110 or the LART however, the - red LED will simply flash regularly to indicate that the system is - still functional. It is safe to say Y here if you have a CATS - system, but the driver will do nothing. - -config LEDS_TIMER - bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ - OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ - || MACH_OMAP_PERSEUS2 - depends on LEDS - depends on !GENERIC_CLOCKEVENTS - default y if ARCH_EBSA110 - help - If you say Y here, one of the system LEDs (the green one on the - NetWinder, the amber one on the EBSA285, or the red one on the LART) - will flash regularly to indicate that the system is still - operational. This is mainly useful to kernel hackers who are - debugging unstable kernels. - - The LART uses the same LED for both Timer LED and CPU usage LED - functions. You may choose to use both, but the Timer LED function - will overrule the CPU usage LED. - -config LEDS_CPU - bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ - !ARCH_OMAP) \ - || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ - || MACH_OMAP_PERSEUS2 - depends on LEDS - help - If you say Y here, the red LED will be used to give a good real - time indication of CPU usage, by lighting whenever the idle task - is not currently executing. - - The LART uses the same LED for both Timer LED and CPU usage LED - functions. You may choose to use both, but the Timer LED function - will overrule the CPU usage LED. - config ALIGNMENT_TRAP bool depends on CPU_CP15_MMU diff --git a/arch/arm/include/asm/leds.h b/arch/arm/include/asm/leds.h deleted file mode 100644 index c545739f39b7..000000000000 --- a/arch/arm/include/asm/leds.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * arch/arm/include/asm/leds.h - * - * Copyright (C) 1998 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Event-driven interface for LEDs on machines - * Added led_start and led_stop- Alex Holden, 28th Dec 1998. - */ -#ifndef ASM_ARM_LEDS_H -#define ASM_ARM_LEDS_H - - -typedef enum { - led_idle_start, - led_idle_end, - led_timer, - led_start, - led_stop, - led_claim, /* override idle & timer leds */ - led_release, /* restore idle & timer leds */ - led_start_timer_mode, - led_stop_timer_mode, - led_green_on, - led_green_off, - led_amber_on, - led_amber_off, - led_red_on, - led_red_off, - led_blue_on, - led_blue_off, - /* - * I want this between led_timer and led_start, but - * someone has decided to export this to user space - */ - led_halted -} led_event_t; - -/* Use this routine to handle LEDs */ - -#ifdef CONFIG_LEDS -extern void (*leds_event)(led_event_t); -#else -#define leds_event(e) -#endif - -#endif diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 7ad2d5cf7008..8951577c4ced 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -21,7 +21,6 @@ obj-y := elf.o entry-armv.o entry-common.o irq.o opcodes.o \ obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o -obj-$(CONFIG_LEDS) += leds.o obj-$(CONFIG_OC_ETM) += etm.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ISA_DMA_API) += dma.o diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c deleted file mode 100644 index 1911dae19e4f..000000000000 --- a/arch/arm/kernel/leds.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * LED support code, ripped out of arch/arm/kernel/time.c - * - * Copyright (C) 1994-2001 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/export.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/syscore_ops.h> -#include <linux/string.h> - -#include <asm/leds.h> - -static void dummy_leds_event(led_event_t evt) -{ -} - -void (*leds_event)(led_event_t) = dummy_leds_event; - -struct leds_evt_name { - const char name[8]; - int on; - int off; -}; - -static const struct leds_evt_name evt_names[] = { - { "amber", led_amber_on, led_amber_off }, - { "blue", led_blue_on, led_blue_off }, - { "green", led_green_on, led_green_off }, - { "red", led_red_on, led_red_off }, -}; - -static ssize_t leds_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t size) -{ - int ret = -EINVAL, len = strcspn(buf, " "); - - if (len > 0 && buf[len] == '\0') - len--; - - if (strncmp(buf, "claim", len) == 0) { - leds_event(led_claim); - ret = size; - } else if (strncmp(buf, "release", len) == 0) { - leds_event(led_release); - ret = size; - } else { - int i; - - for (i = 0; i < ARRAY_SIZE(evt_names); i++) { - if (strlen(evt_names[i].name) != len || - strncmp(buf, evt_names[i].name, len) != 0) - continue; - if (strncmp(buf+len, " on", 3) == 0) { - leds_event(evt_names[i].on); - ret = size; - } else if (strncmp(buf+len, " off", 4) == 0) { - leds_event(evt_names[i].off); - ret = size; - } - break; - } - } - return ret; -} - -static DEVICE_ATTR(event, 0200, NULL, leds_store); - -static struct bus_type leds_subsys = { - .name = "leds", - .dev_name = "leds", -}; - -static struct device leds_device = { - .id = 0, - .bus = &leds_subsys, -}; - -static int leds_suspend(void) -{ - leds_event(led_stop); - return 0; -} - -static void leds_resume(void) -{ - leds_event(led_start); -} - -static void leds_shutdown(void) -{ - leds_event(led_halted); -} - -static struct syscore_ops leds_syscore_ops = { - .shutdown = leds_shutdown, - .suspend = leds_suspend, - .resume = leds_resume, -}; - -static int __init leds_init(void) -{ - int ret; - ret = subsys_system_register(&leds_subsys, NULL); - if (ret == 0) - ret = device_register(&leds_device); - if (ret == 0) - ret = device_create_file(&leds_device, &dev_attr_event); - if (ret == 0) - register_syscore_ops(&leds_syscore_ops); - return ret; -} - -device_initcall(leds_init); - -EXPORT_SYMBOL(leds_event); diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 19c95ea65b2f..864580af1678 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -31,9 +31,9 @@ #include <linux/random.h> #include <linux/hw_breakpoint.h> #include <linux/cpuidle.h> +#include <linux/leds.h> #include <asm/cacheflush.h> -#include <asm/leds.h> #include <asm/processor.h> #include <asm/thread_notify.h> #include <asm/stacktrace.h> @@ -189,7 +189,7 @@ void cpu_idle(void) while (1) { tick_nohz_idle_enter(); rcu_idle_enter(); - leds_event(led_idle_start); + ledtrig_cpu(CPU_LED_IDLE_START); while (!need_resched()) { #ifdef CONFIG_HOTPLUG_CPU if (cpu_is_offline(smp_processor_id())) @@ -220,7 +220,7 @@ void cpu_idle(void) } else local_irq_enable(); } - leds_event(led_idle_end); + ledtrig_cpu(CPU_LED_IDLE_END); rcu_idle_exit(); tick_nohz_idle_exit(); schedule_preempt_disabled(); diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index af2afb019672..09be0c3c9069 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -25,7 +25,6 @@ #include <linux/timer.h> #include <linux/irq.h> -#include <asm/leds.h> #include <asm/thread_info.h> #include <asm/sched_clock.h> #include <asm/stacktrace.h> @@ -80,21 +79,6 @@ u32 arch_gettimeoffset(void) } #endif /* CONFIG_ARCH_USES_GETTIMEOFFSET */ -#ifdef CONFIG_LEDS_TIMER -static inline void do_leds(void) -{ - static unsigned int count = HZ/2; - - if (--count == 0) { - count = HZ/2; - leds_event(led_timer); - } -} -#else -#define do_leds() -#endif - - #ifndef CONFIG_GENERIC_CLOCKEVENTS /* * Kernel system timer support. @@ -102,7 +86,6 @@ static inline void do_leds(void) void timer_tick(void) { profile_tick(CPU_PROFILING); - do_leds(); xtime_update(1); #ifndef CONFIG_SMP update_process_times(user_mode(get_irq_regs())); |