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Commit 7266d48f authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

Merge branch 'timer/cleanup' into late/mvebu2 



Basing the mvebu patches on top of the timer cleanup
avoids some nasty merges.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parents 168268a2 90cf214d

arch/arm/include/asm/mach/arch.h

+1 −2
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ 


struct tag;

struct meminfo;

struct sys_timer;

struct pt_regs;

struct smp_operations;

#ifdef CONFIG_SMP
@@ -48,7 +47,7 @@ struct machine_desc { 
	void			(*map_io)(void);/* IO mapping function	*/

	void			(*init_early)(void);

	void			(*init_irq)(void);

	struct sys_timer	*timer;		/* system tick timer	*/

	void			(*init_time)(void);

	void			(*init_machine)(void);

	void			(*init_late)(void);

#ifdef CONFIG_MULTI_IRQ_HANDLER

arch/arm/include/asm/mach/time.h

+0 −30
Original line number Diff line number Diff line
@@ -10,36 +10,6 @@ 
#ifndef __ASM_ARM_MACH_TIME_H

#define __ASM_ARM_MACH_TIME_H



/*

 * This is our kernel timer structure.

 *

 * - init

 *   Initialise the kernels jiffy timer source, claim interrupt

 *   using setup_irq.  This is called early on during initialisation

 *   while interrupts are still disabled on the local CPU.

 * - suspend

 *   Suspend the kernel jiffy timer source, if necessary.  This

 *   is called with interrupts disabled, after all normal devices

 *   have been suspended.  If no action is required, set this to

 *   NULL.

 * - resume

 *   Resume the kernel jiffy timer source, if necessary.  This

 *   is called with interrupts disabled before any normal devices

 *   are resumed.  If no action is required, set this to NULL.

 * - offset

 *   Return the timer offset in microseconds since the last timer

 *   interrupt.  Note: this must take account of any unprocessed

 *   timer interrupt which may be pending.

 */

struct sys_timer {

	void			(*init)(void);

	void			(*suspend)(void);

	void			(*resume)(void);

#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET

	unsigned long		(*offset)(void);

#endif

};



extern void timer_tick(void);



struct timespec;

arch/arm/kernel/time.c

+1 −52
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
#include <linux/timex.h>

#include <linux/errno.h>

#include <linux/profile.h>

#include <linux/syscore_ops.h>

#include <linux/timer.h>

#include <linux/irq.h>
@@ -31,11 +30,6 @@ 
#include <asm/mach/arch.h>

#include <asm/mach/time.h>



/*

 * Our system timer.

 */

static struct sys_timer *system_timer;



#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || \

    defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE)

/* this needs a better home */
@@ -69,16 +63,6 @@ unsigned long profile_pc(struct pt_regs *regs) 
EXPORT_SYMBOL(profile_pc);

#endif



#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET

u32 arch_gettimeoffset(void)

{

	if (system_timer->offset != NULL)

		return system_timer->offset() * 1000;



	return 0;

}

#endif /* CONFIG_ARCH_USES_GETTIMEOFFSET */



#ifndef CONFIG_GENERIC_CLOCKEVENTS

/*

 * Kernel system timer support.
@@ -129,43 +113,8 @@ int __init register_persistent_clock(clock_access_fn read_boot, 
	return -EINVAL;

}



#if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS)

static int timer_suspend(void)

{

	if (system_timer->suspend)

		system_timer->suspend();



	return 0;

}



static void timer_resume(void)

{

	if (system_timer->resume)

		system_timer->resume();

}

#else

#define timer_suspend NULL

#define timer_resume NULL

#endif



static struct syscore_ops timer_syscore_ops = {

	.suspend	= timer_suspend,

	.resume		= timer_resume,

};



static int __init timer_init_syscore_ops(void)

{

	register_syscore_ops(&timer_syscore_ops);



	return 0;

}



device_initcall(timer_init_syscore_ops);



void __init time_init(void)

{

	system_timer = machine_desc->timer;

	system_timer->init();

	machine_desc->init_time();

	sched_clock_postinit();

}

arch/arm/mach-at91/at91rm9200_time.c

+0 −5
Original line number Diff line number Diff line
@@ -274,8 +274,3 @@ void __init at91rm9200_timer_init(void) 
	/* register clocksource */

	clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK);

}
 


struct sys_timer at91rm9200_timer = {

	.init		= at91rm9200_timer_init,

};

arch/arm/mach-at91/at91sam926x_time.c

+27 −26
Original line number Diff line number Diff line
@@ -104,12 +104,38 @@ pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) 
	}

}



static void at91sam926x_pit_suspend(struct clock_event_device *cedev)

{

	/* Disable timer */

	pit_write(AT91_PIT_MR, 0);

}



static void at91sam926x_pit_reset(void)

{

	/* Disable timer and irqs */

	pit_write(AT91_PIT_MR, 0);



	/* Clear any pending interrupts, wait for PIT to stop counting */

	while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0)

		cpu_relax();



	/* Start PIT but don't enable IRQ */

	pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);

}



static void at91sam926x_pit_resume(struct clock_event_device *cedev)

{

	at91sam926x_pit_reset();

}



static struct clock_event_device pit_clkevt = {

	.name		= "pit",

	.features	= CLOCK_EVT_FEAT_PERIODIC,

	.shift		= 32,

	.rating		= 100,

	.set_mode	= pit_clkevt_mode,

	.suspend	= at91sam926x_pit_suspend,

	.resume		= at91sam926x_pit_resume,

};
@@ -150,19 +176,6 @@ static struct irqaction at91sam926x_pit_irq = { 
	.irq		= NR_IRQS_LEGACY + AT91_ID_SYS,

};



static void at91sam926x_pit_reset(void)

{

	/* Disable timer and irqs */

	pit_write(AT91_PIT_MR, 0);



	/* Clear any pending interrupts, wait for PIT to stop counting */

	while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0)

		cpu_relax();



	/* Start PIT but don't enable IRQ */

	pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);

}



#ifdef CONFIG_OF

static struct of_device_id pit_timer_ids[] = {

	{ .compatible = "atmel,at91sam9260-pit" },
@@ -211,7 +224,7 @@ static int __init of_at91sam926x_pit_init(void) 
/*

 * Set up both clocksource and clockevent support.

 */

static void __init at91sam926x_pit_init(void)

void __init at91sam926x_pit_init(void)

{

	unsigned long	pit_rate;

	unsigned	bits;
@@ -250,12 +263,6 @@ static void __init at91sam926x_pit_init(void) 
	clockevents_register_device(&pit_clkevt);

}



static void at91sam926x_pit_suspend(void)

{

	/* Disable timer */

	pit_write(AT91_PIT_MR, 0);

}



void __init at91sam926x_ioremap_pit(u32 addr)

{

#if defined(CONFIG_OF)
@@ -272,9 +279,3 @@ void __init at91sam926x_ioremap_pit(u32 addr) 
	if (!pit_base_addr)

		panic("Impossible to ioremap PIT\n");

}
 


struct sys_timer at91sam926x_timer = {

	.init		= at91sam926x_pit_init,

	.suspend	= at91sam926x_pit_suspend,

	.resume		= at91sam926x_pit_reset,

};