diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-23 15:15:27 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-23 15:15:27 -0700 |
commit | 42cd71bf1e3a081b3150018bbf448cb6c8a844a5 (patch) | |
tree | 4a5d2eb0444255e4ad827a76dbd1417dd3876db6 /arch/arm/plat-mxc/time.c | |
parent | f5039935ac685b3b9b8c13fbc33cac8643dee32e (diff) | |
parent | 9a55d9752d8abfc62f1ab05ccc790d22a0c8e7c0 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (137 commits)
ARM: bcmring: convert to use sp804 clockevents
ARM: bcmring: convert to sp804 clocksource
ARM: 6912/1: bcmring: Add clkdev table in init_early
clockevents: ARM sp804: obtain sp804 timer rate via clks
clockevents: ARM sp804: allow clockevent name to be specified
clocksource: ARM sp804: obtain sp804 timer rate via clks
clocksource: ARM sp804: allow clocksource name to be specified
clocksource: convert OMAP1 to 32-bit down counting clocksource
clocksource: convert MXS timrotv2 to 32-bit down counting clocksource
clocksource: convert SPEAr platforms 16-bit up counting clocksource
clocksource: convert Integrator/AP 16-bit down counting clocksource
clocksource: convert W90x900 24-bit down counting clocksource
clocksource: convert ARM 32-bit down counting clocksources
clocksource: convert ARM 32-bit up counting clocksources
clocksource: add common mmio clocksource
ARM: update sa1100 to reflect PXA updates
ARM: omap1: convert to using readl/writel instead of volatile struct
ARM: omap1: delete useless interrupt handler
ARM: s5p: consolidate selection of timer register
ARM: 6939/1: fix missing 'cpu_relax()' declaration
...
Diffstat (limited to 'arch/arm/plat-mxc/time.c')
-rw-r--r-- | arch/arm/plat-mxc/time.c | 40 |
1 files changed, 8 insertions, 32 deletions
diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c index 2237ff8b434..4b0fe285e83 100644 --- a/arch/arm/plat-mxc/time.c +++ b/arch/arm/plat-mxc/time.c @@ -54,7 +54,7 @@ #define MX2_TSTAT_CAPT (1 << 1) #define MX2_TSTAT_COMP (1 << 0) -/* MX31, MX35, MX25, MXC91231, MX5 */ +/* MX31, MX35, MX25, MX5 */ #define V2_TCTL_WAITEN (1 << 3) /* Wait enable mode */ #define V2_TCTL_CLK_IPG (1 << 6) #define V2_TCTL_FRR (1 << 9) @@ -106,56 +106,32 @@ static void gpt_irq_acknowledge(void) __raw_writel(V2_TSTAT_OF1, timer_base + V2_TSTAT); } -static cycle_t dummy_get_cycles(struct clocksource *cs) -{ - return 0; -} - -static cycle_t mx1_2_get_cycles(struct clocksource *cs) -{ - return __raw_readl(timer_base + MX1_2_TCN); -} - -static cycle_t v2_get_cycles(struct clocksource *cs) -{ - return __raw_readl(timer_base + V2_TCN); -} - -static struct clocksource clocksource_mxc = { - .name = "mxc_timer1", - .rating = 200, - .read = dummy_get_cycles, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; +static void __iomem *sched_clock_reg; static DEFINE_CLOCK_DATA(cd); unsigned long long notrace sched_clock(void) { - cycle_t cyc = clocksource_mxc.read(&clocksource_mxc); + cycle_t cyc = sched_clock_reg ? __raw_readl(sched_clock_reg) : 0; return cyc_to_sched_clock(&cd, cyc, (u32)~0); } static void notrace mxc_update_sched_clock(void) { - cycle_t cyc = clocksource_mxc.read(&clocksource_mxc); + cycle_t cyc = sched_clock_reg ? __raw_readl(sched_clock_reg) : 0; update_sched_clock(&cd, cyc, (u32)~0); } static int __init mxc_clocksource_init(struct clk *timer_clk) { unsigned int c = clk_get_rate(timer_clk); + void __iomem *reg = timer_base + (timer_is_v2() ? V2_TCN : MX1_2_TCN); - if (timer_is_v2()) - clocksource_mxc.read = v2_get_cycles; - else - clocksource_mxc.read = mx1_2_get_cycles; + sched_clock_reg = reg; init_sched_clock(&cd, mxc_update_sched_clock, 32, c); - clocksource_register_hz(&clocksource_mxc, c); - - return 0; + return clocksource_mmio_init(reg, "mxc_timer1", c, 200, 32, + clocksource_mmio_readl_up); } /* clock event */ |