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>
diff --git a/arch/arm/plat-s5p/s5p-time.c b/arch/arm/plat-s5p/s5p-time.c
index 7c82f06..c833e7b 100644
--- a/arch/arm/plat-s5p/s5p-time.c
+++ b/arch/arm/plat-s5p/s5p-time.c
@@ -314,13 +314,6 @@
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 @@
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 @@
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)