diff options
Diffstat (limited to 'arch/arc/kernel/time.c')
| -rw-r--r-- | arch/arc/kernel/time.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c index 09f4309aa2c0..0e51e69cf30d 100644 --- a/arch/arc/kernel/time.c +++ b/arch/arc/kernel/time.c @@ -44,13 +44,24 @@ #include <asm/clk.h> #include <asm/mach_desc.h> +/* Timer related Aux registers */ +#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */ +#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */ +#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */ +#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */ +#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */ +#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */ + +#define TIMER_CTRL_IE (1 << 0) /* Interupt when Count reachs limit */ +#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */ + #define ARC_TIMER_MAX 0xFFFFFFFF /********** Clock Source Device *********/ #ifdef CONFIG_ARC_HAS_RTSC -int __cpuinit arc_counter_setup(void) +int arc_counter_setup(void) { /* RTSC insn taps into cpu clk, needs no setup */ @@ -105,7 +116,7 @@ static bool is_usable_as_clocksource(void) /* * set 32bit TIMER1 to keep counting monotonically and wraparound */ -int __cpuinit arc_counter_setup(void) +int arc_counter_setup(void) { write_aux_reg(ARC_REG_TIMER1_LIMIT, ARC_TIMER_MAX); write_aux_reg(ARC_REG_TIMER1_CNT, 0); @@ -212,7 +223,7 @@ static struct irqaction arc_timer_irq = { * Setup the local event timer for @cpu * N.B. weak so that some exotic ARC SoCs can completely override it */ -void __attribute__((weak)) __cpuinit arc_local_timer_setup(unsigned int cpu) +void __attribute__((weak)) arc_local_timer_setup(unsigned int cpu) { struct clock_event_device *clk = &per_cpu(arc_clockevent_device, cpu); |