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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-05-08 17:10:14 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-05-23 18:04:52 +0100
commitd6e15d78537d2483bff05f0ee5b5cec6c4678fd5 (patch)
treec2300cafb150461f7f5035008c708a37b4e83279 /arch/arm/plat-spear
parentc5039f52329ff796d7fea9024e5615abee02dbfb (diff)
clocksource: convert SPEAr platforms 16-bit up counting clocksource
Convert SPEAr platforms 16-bit up counting clocksource, which requires a 16-bit register access read rather than 32-bit. Acked-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-spear')
-rw-r--r--arch/arm/plat-spear/time.c16
1 files changed, 2 insertions, 14 deletions
diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index dbb6e4fff79d..0c77e4298675 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -70,19 +70,6 @@ static void clockevent_set_mode(enum clock_event_mode mode,
static int clockevent_next_event(unsigned long evt,
struct clock_event_device *clk_event_dev);
-static cycle_t clocksource_read_cycles(struct clocksource *cs)
-{
- return (cycle_t) readw(gpt_base + COUNT(CLKSRC));
-}
-
-static struct clocksource clksrc = {
- .name = "tmr1",
- .rating = 200, /* its a pretty decent clock */
- .read = clocksource_read_cycles,
- .mask = 0xFFFF, /* 16 bits */
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
static void spear_clocksource_init(void)
{
u32 tick_rate;
@@ -103,7 +90,8 @@ static void spear_clocksource_init(void)
writew(val, gpt_base + CR(CLKSRC));
/* register the clocksource */
- clocksource_register_hz(&clksrc, tick_rate);
+ clocksource_mmio_init(gpt_base + COUNT(CLKSRC), "tmr1", tick_rate,
+ 200, 16, clocksource_mmio_readw_up);
}
static struct clock_event_device clkevt = {