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| author | Chanwoo Choi <cw00.choi@samsung.com> | 2011-07-18 10:07:14 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-07-20 21:10:10 +0400 |
| commit | 0665ccc4c3f229abe3eabe49f3f99763515cf0af (patch) | |
| tree | c6f32e3ec871993207093f5cddac93c951019e0f /arch/arm | |
| parent | 65f5eaa27a0c18ab79489b2fcbaf28d97c45101a (diff) | |
| download | linux-0665ccc4c3f229abe3eabe49f3f99763515cf0af.tar.xz | |
clocksource: convert 32-bit down counting clocksource on S5PV210/S5P64X0
Convert the S5PV210/S5P64X0 32-bit down-counting clocksource to
the generic mmio clocksource infrastructure
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/plat-s5p/s5p-time.c | 20 |
2 files changed, 5 insertions, 17 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2b5f82f34a7e..d39f5324d626 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -726,6 +726,7 @@ config ARCH_S5P64X0 select GENERIC_GPIO select HAVE_CLK select CLKDEV_LOOKUP + select CLKSRC_MMIO select HAVE_S3C2410_WATCHDOG if WATCHDOG select GENERIC_CLOCKEVENTS select HAVE_SCHED_CLOCK @@ -756,6 +757,7 @@ config ARCH_S5PV210 select GENERIC_GPIO select HAVE_CLK select CLKDEV_LOOKUP + select CLKSRC_MMIO select ARM_L1_CACHE_SHIFT_6 select ARCH_HAS_CPUFREQ select GENERIC_CLOCKEVENTS diff --git a/arch/arm/plat-s5p/s5p-time.c b/arch/arm/plat-s5p/s5p-time.c index 7c82f06baf57..c833e7b57599 100644 --- a/arch/arm/plat-s5p/s5p-time.c +++ b/arch/arm/plat-s5p/s5p-time.c @@ -314,13 +314,6 @@ static void __iomem *s5p_timer_reg(void) return S3C_TIMERREG(offset); } -static cycle_t s5p_timer_read(struct clocksource *cs) -{ - void __iomem *reg = s5p_timer_reg(); - - return (cycle_t) (reg ? ~__raw_readl(reg) : 0); -} - /* * Override the global weak sched_clock symbol with this * local implementation which uses the clocksource to get some @@ -350,14 +343,6 @@ static void notrace s5p_update_sched_clock(void) update_sched_clock(&cd, ~__raw_readl(reg), (u32)~0); } -struct clocksource time_clocksource = { - .name = "s5p_clocksource_timer", - .rating = 250, - .read = s5p_timer_read, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - static void __init s5p_clocksource_init(void) { unsigned long pclk; @@ -375,8 +360,9 @@ static void __init s5p_clocksource_init(void) init_sched_clock(&cd, s5p_update_sched_clock, 32, clock_rate); - if (clocksource_register_hz(&time_clocksource, clock_rate)) - panic("%s: can't register clocksource\n", time_clocksource.name); + if (clocksource_mmio_init(s5p_timer_reg(), "s5p_clocksource_timer", + clock_rate, 250, 32, clocksource_mmio_readl_down)) + panic("s5p_clocksource_timer: can't register clocksource\n"); } static void __init s5p_timer_resources(void) |