diff options
Diffstat (limited to 'arch/arm')
74 files changed, 483 insertions, 997 deletions
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c index 113085a7712..7aa4262ada7 100644 --- a/arch/arm/common/vic.c +++ b/arch/arm/common/vic.c @@ -22,17 +22,16 @@ #include <linux/init.h> #include <linux/list.h> #include <linux/io.h> -#include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <linux/device.h> #include <linux/amba/bus.h> #include <asm/mach/irq.h> #include <asm/hardware/vic.h> -#if defined(CONFIG_PM) +#ifdef CONFIG_PM /** * struct vic_device - VIC PM device - * @sysdev: The system device which is registered. * @irq: The IRQ number for the base of the VIC. * @base: The register base for the VIC. * @resume_sources: A bitmask of interrupts for resume. @@ -43,8 +42,6 @@ * @protect: Save for VIC_PROTECT. */ struct vic_device { - struct sys_device sysdev; - void __iomem *base; int irq; u32 resume_sources; @@ -59,11 +56,6 @@ struct vic_device { static struct vic_device vic_devices[CONFIG_ARM_VIC_NR]; static int vic_id; - -static inline struct vic_device *to_vic(struct sys_device *sys) -{ - return container_of(sys, struct vic_device, sysdev); -} #endif /* CONFIG_PM */ /** @@ -85,10 +77,9 @@ static void vic_init2(void __iomem *base) writel(32, base + VIC_PL190_DEF_VECT_ADDR); } -#if defined(CONFIG_PM) -static int vic_class_resume(struct sys_device *dev) +#ifdef CONFIG_PM +static void resume_one_vic(struct vic_device *vic) { - struct vic_device *vic = to_vic(dev); void __iomem *base = vic->base; printk(KERN_DEBUG "%s: resuming vic at %p\n", __func__, base); @@ -107,13 +98,18 @@ static int vic_class_resume(struct sys_device *dev) writel(vic->soft_int, base + VIC_INT_SOFT); writel(~vic->soft_int, base + VIC_INT_SOFT_CLEAR); +} - return 0; +static void vic_resume(void) +{ + int id; + + for (id = vic_id - 1; id >= 0; id--) + resume_one_vic(vic_devices + id); } -static int vic_class_suspend(struct sys_device *dev, pm_message_t state) +static void suspend_one_vic(struct vic_device *vic) { - struct vic_device *vic = to_vic(dev); void __iomem *base = vic->base; printk(KERN_DEBUG "%s: suspending vic at %p\n", __func__, base); @@ -128,14 +124,21 @@ static int vic_class_suspend(struct sys_device *dev, pm_message_t state) writel(vic->resume_irqs, base + VIC_INT_ENABLE); writel(~vic->resume_irqs, base + VIC_INT_ENABLE_CLEAR); +} + +static int vic_suspend(void) +{ + int id; + + for (id = 0; id < vic_id; id++) + suspend_one_vic(vic_devices + id); return 0; } -struct sysdev_class vic_class = { - .name = "vic", - .suspend = vic_class_suspend, - .resume = vic_class_resume, +struct syscore_ops vic_syscore_ops = { + .suspend = vic_suspend, + .resume = vic_resume, }; /** @@ -147,30 +150,8 @@ struct sysdev_class vic_class = { */ static int __init vic_pm_init(void) { - struct vic_device *dev = vic_devices; - int err; - int id; - - if (vic_id == 0) - return 0; - - err = sysdev_class_register(&vic_class); - if (err) { - printk(KERN_ERR "%s: cannot register class\n", __func__); - return err; - } - - for (id = 0; id < vic_id; id++, dev++) { - dev->sysdev.id = id; - dev->sysdev.cls = &vic_class; - - err = sysdev_register(&dev->sysdev); - if (err) { - printk(KERN_ERR "%s: failed to register device\n", - __func__); - return err; - } - } + if (vic_id > 0) + register_syscore_ops(&vic_syscore_ops); return 0; } diff --git a/arch/arm/include/asm/i8253.h b/arch/arm/include/asm/i8253.h new file mode 100644 index 00000000000..70656b69d5c --- /dev/null +++ b/arch/arm/include/asm/i8253.h @@ -0,0 +1,15 @@ +#ifndef __ASMARM_I8253_H +#define __ASMARM_I8253_H + +/* i8253A PIT registers */ +#define PIT_MODE 0x43 +#define PIT_CH0 0x40 + +#define PIT_LATCH ((PIT_TICK_RATE + HZ / 2) / HZ) + +extern raw_spinlock_t i8253_lock; + +#define outb_pit outb_p +#define inb_pit inb_p + +#endif diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h index 883f6be5117..d5adaae5ee2 100644 --- a/arch/arm/include/asm/mach/time.h +++ b/arch/arm/include/asm/mach/time.h @@ -34,7 +34,6 @@ * timer interrupt which may be pending. */ struct sys_timer { - struct sys_device dev; void (*init)(void); void (*suspend)(void); void (*resume)(void); diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c index 31a316c1777..0f107dcb034 100644 --- a/arch/arm/kernel/leds.c +++ b/arch/arm/kernel/leds.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <asm/leds.h> @@ -69,36 +70,37 @@ static ssize_t leds_store(struct sys_device *dev, static SYSDEV_ATTR(event, 0200, NULL, leds_store); -static int leds_suspend(struct sys_device *dev, pm_message_t state) +static struct sysdev_class leds_sysclass = { + .name = "leds", +}; + +static struct sys_device leds_device = { + .id = 0, + .cls = &leds_sysclass, +}; + +static int leds_suspend(void) { leds_event(led_stop); return 0; } -static int leds_resume(struct sys_device *dev) +static void leds_resume(void) { leds_event(led_start); - return 0; } -static int leds_shutdown(struct sys_device *dev) +static void leds_shutdown(void) { leds_event(led_halted); - return 0; } -static struct sysdev_class leds_sysclass = { - .name = "leds", +static struct syscore_ops leds_syscore_ops = { .shutdown = leds_shutdown, .suspend = leds_suspend, .resume = leds_resume, }; -static struct sys_device leds_device = { - .id = 0, - .cls = &leds_sysclass, -}; - static int __init leds_init(void) { int ret; @@ -107,6 +109,8 @@ static int __init leds_init(void) ret = sysdev_register(&leds_device); if (ret == 0) ret = sysdev_create_file(&leds_device, &attr_event); + if (ret == 0) + register_syscore_ops(&leds_syscore_ops); return ret; } diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index f29b8a29b17..007a0a950e7 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -560,10 +560,7 @@ asmlinkage void __exception_irq_entry do_IPI(int ipinr, struct pt_regs *regs) break; case IPI_RESCHEDULE: - /* - * nothing more to do - eveything is - * done on the interrupt return path - */ + scheduler_ipi(); break; case IPI_CALL_FUNC: diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 1ff46cabc7e..cb634c3e28e 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -21,7 +21,7 @@ #include <linux/timex.h> #include <linux/errno.h> #include <linux/profile.h> -#include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <linux/timer.h> #include <linux/irq.h> @@ -115,48 +115,37 @@ void timer_tick(void) #endif #if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS) -static int timer_suspend(struct sys_device *dev, pm_message_t state) +static int timer_suspend(void) { - struct sys_timer *timer = container_of(dev, struct sys_timer, dev); - - if (timer->suspend != NULL) - timer->suspend(); + if (system_timer->suspend) + system_timer->suspend(); return 0; } -static int timer_resume(struct sys_device *dev) +static void timer_resume(void) { - struct sys_timer *timer = container_of(dev, struct sys_timer, dev); - - if (timer->resume != NULL) - timer->resume(); - - return 0; + if (system_timer->resume) + system_timer->resume(); } #else #define timer_suspend NULL #define timer_resume NULL #endif -static struct sysdev_class timer_sysclass = { - .name = "timer", +static struct syscore_ops timer_syscore_ops = { .suspend = timer_suspend, .resume = timer_resume, }; -static int __init timer_init_sysfs(void) +static int __init timer_init_syscore_ops(void) { - int ret = sysdev_class_register(&timer_sysclass); - if (ret == 0) { - system_timer->dev.cls = &timer_sysclass; - ret = sysdev_register(&system_timer->dev); - } + register_syscore_ops(&timer_syscore_ops); - return ret; + return 0; } -device_initcall(timer_init_sysfs); +device_initcall(timer_init_syscore_ops); void __init time_init(void) { diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 3b54ad19d48..d52eec268b4 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -234,7 +234,6 @@ static int __die(const char *str, int err, struct thread_info *thread, struct pt printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n", str, err, ++die_counter); - sysfs_printk_last_file(); /* trap and error numbers are mostly meaningless on ARM */ ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV); diff --git a/arch/arm/mach-davinci/cpufreq.c b/arch/arm/mach-davinci/cpufreq.c index 0a95be1512b..41669ecc1f9 100644 --- a/arch/arm/mach-davinci/cpufreq.c +++ b/arch/arm/mach-davinci/cpufreq.c @@ -94,9 +94,7 @@ static int davinci_target(struct cpufreq_policy *policy, if (freqs.old == freqs.new) return ret; - cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, - dev_driver_string(cpufreq.dev), - "transition: %u --> %u\n", freqs.old, freqs.new); + dev_dbg(&cpufreq.dev, "transition: %u --> %u\n", freqs.old, freqs.new); ret = cpufreq_frequency_table_target(policy, pdata->freq_table, freqs.new, relation, &idx); diff --git a/arch/arm/mach-exynos4/pm.c b/arch/arm/mach-exynos4/pm.c index 10d917d9e3a..8755ca8dd48 100644 --- a/arch/arm/mach-exynos4/pm.c +++ b/arch/arm/mach-exynos4/pm.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/suspend.h> +#include <linux/syscore_ops.h> #include <linux/io.h> #include <asm/cacheflush.h> @@ -372,7 +373,27 @@ void exynos4_scu_enable(void __iomem *scu_base) flush_cache_all(); } -static int exynos4_pm_resume(struct sys_device *dev) +static struct sysdev_driver exynos4_pm_driver = { + .add = exynos4_pm_add, +}; + +static __init int exynos4_pm_drvinit(void) +{ + unsigned int tmp; + + s3c_pm_init(); + + /* All wakeup disable */ + + tmp = __raw_readl(S5P_WAKEUP_MASK); + tmp |= ((0xFF << 8) | (0x1F << 1)); + __raw_writel(tmp, S5P_WAKEUP_MASK); + + return sysdev_driver_register(&exynos4_sysclass, &exynos4_pm_driver); +} +arch_initcall(exynos4_pm_drvinit); + +static void exynos4_pm_resume(void) { /* For release retention */ @@ -394,27 +415,15 @@ static int exynos4_pm_resume(struct sys_device *dev) /* enable L2X0*/ writel_relaxed(1, S5P_VA_L2CC + L2X0_CTRL); #endif - - return 0; } -static struct sysdev_driver exynos4_pm_driver = { - .add = exynos4_pm_add, +static struct syscore_ops exynos4_pm_syscore_ops = { .resume = exynos4_pm_resume, }; -static __init int exynos4_pm_drvinit(void) +static __init int exynos4_pm_syscore_init(void) { - unsigned int tmp; - - s3c_pm_init(); - - /* All wakeup disable */ - - tmp = __raw_readl(S5P_WAKEUP_MASK); - tmp |= ((0xFF << 8) | (0x1F << 1)); - __raw_writel(tmp, S5P_WAKEUP_MASK); - - return sysdev_driver_register(&exynos4_sysclass, &exynos4_pm_driver); + register_syscore_ops(&exynos4_pm_syscore_ops); + return 0; } -arch_initcall(exynos4_pm_drvinit); +arch_initcall(exynos4_pm_syscore_init); diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig index bdd257921cf..46adca068f2 100644 --- a/arch/arm/mach-footbridge/Kconfig +++ b/arch/arm/mach-footbridge/Kconfig @@ -4,6 +4,7 @@ menu "Footbridge Implementations" config ARCH_CATS bool "CATS" + select CLKSRC_I8253 select FOOTBRIDGE_HOST select ISA select ISA_DMA @@ -59,6 +60,7 @@ config ARCH_EBSA285_HOST config ARCH_NETWINDER bool "NetWinder" + select CLKSRC_I8253 select FOOTBRIDGE_HOST select ISA select ISA_DMA diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c index 441c6ce0d55..7020f1a3fec 100644 --- a/arch/arm/mach-footbridge/isa-timer.c +++ b/arch/arm/mach-footbridge/isa-timer.c @@ -10,53 +10,16 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> +#include <linux/spinlock.h> #include <linux/timex.h> #include <asm/irq.h> - +#include <asm/i8253.h> #include <asm/mach/time.h> #include "common.h" -#define PIT_MODE 0x43 -#define PIT_CH0 0x40 - -#define PIT_LATCH ((PIT_TICK_RATE + HZ / 2) / HZ) - -static cycle_t pit_read(struct clocksource *cs) -{ - unsigned long flags; - static int old_count; - static u32 old_jifs; - int count; - u32 jifs; - - raw_local_irq_save(flags); - - jifs = jiffies; - outb_p(0x00, PIT_MODE); /* latch the count */ - count = inb_p(PIT_CH0); /* read the latched count */ - count |= inb_p(PIT_CH0) << 8; - - if (count > old_count && jifs == old_jifs) - count = old_count; - - old_count = count; - old_jifs = jifs; - - raw_local_irq_restore(flags); - - count = (PIT_LATCH - 1) - count; - - return (cycle_t)(jifs * PIT_LATCH) + count; -} - -static struct clocksource pit_cs = { - .name = "pit", - .rating = 110, - .read = pit_read, - .mask = CLOCKSOURCE_MASK(32), -}; +DEFINE_RAW_SPINLOCK(i8253_lock); static void pit_set_mode(enum clock_event_mode mode, struct clock_event_device *evt) @@ -121,7 +84,7 @@ static void __init isa_timer_init(void) pit_ce.max_delta_ns = clockevent_delta2ns(0x7fff, &pit_ce); pit_ce.min_delta_ns = clockevent_delta2ns(0x000f, &pit_ce); - clocksource_register_hz(&pit_cs, PIT_TICK_RATE); + clocksource_i8253_init(); setup_irq(pit_ce.irq, &pit_timer_irq); clockevents_register_device(&pit_ce); diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index 980803ff348..d3e96451529 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -24,7 +24,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/string.h> -#include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <linux/amba/bus.h> #include <linux/amba/kmi.h> #include <linux/clocksource.h> @@ -180,13 +180,13 @@ static void __init ap_init_irq(void) #ifdef CONFIG_PM static unsigned long ic_irq_enable; -static int irq_suspend(struct sys_device *dev, pm_message_t state) +static int irq_suspend(void) { ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE); return 0; } -static int irq_resume(struct sys_device *dev) +static void irq_resume(void) { /* disable all irq sources */ writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR); @@ -194,33 +194,25 @@ static int irq_resume(struct sys_device *dev) writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR); writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET); - return 0; } #else #define irq_suspend NULL |