From 6cefe92f2991c2bcd8f3a16faa9f4e3c91be48f2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 29 Nov 2013 01:03:35 +0000 Subject: ARM: footbridge: add sched_clock implementation Signed-off-by: Russell King --- arch/arm/mach-footbridge/dc21285-timer.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/arm/mach-footbridge/dc21285-timer.c') diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c index 9ee78f7b4990..785e4199f9cd 100644 --- a/arch/arm/mach-footbridge/dc21285-timer.c +++ b/arch/arm/mach-footbridge/dc21285-timer.c @@ -9,6 +9,7 @@ #include #include #include +#include #include @@ -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); +} -- cgit v1.2.1