Commit 6cefe92f authored by Russell King's avatar Russell King
Browse files

ARM: footbridge: add sched_clock implementation 



Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent e68f31f4

arch/arm/mach-footbridge/common.h

+2 −0
Original line number Diff line number Diff line
@@ -10,3 +10,5 @@ extern void footbridge_init_irq(void); 


extern void isa_init_irq(unsigned int irq);

extern void footbridge_restart(enum reboot_mode, const char *);



extern void footbridge_sched_clock(void);

arch/arm/mach-footbridge/dc21285-timer.c

+17 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/sched_clock.h>



#include <asm/irq.h>
@@ -104,3 +105,19 @@ void __init footbridge_timer_init(void) 
	ce->cpumask = cpumask_of(smp_processor_id());

	clockevents_config_and_register(ce, mem_fclk_21285, 0x4, 0xffffff);

}



static u32 notrace footbridge_read_sched_clock(void)

{

	return ~*CSR_TIMER3_VALUE;

}



void __init footbridge_sched_clock(void)

{

	unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16);



	*CSR_TIMER3_LOAD = 0;

	*CSR_TIMER3_CLR = 0;

	*CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;



	setup_sched_clock(footbridge_read_sched_clock, 24, rate);

}

arch/arm/mach-footbridge/ebsa285.c

+1 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ MACHINE_START(EBSA285, "EBSA285") 
	.video_start	= 0x000a0000,

	.video_end	= 0x000bffff,

	.map_io		= footbridge_map_io,

	.init_early	= footbridge_sched_clock,

	.init_irq	= footbridge_init_irq,

	.init_time	= footbridge_timer_init,

	.restart	= footbridge_restart,