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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2011-07-27 00:54:47 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2011-07-27 00:54:47 -0700
commitaa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch)
tree3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /arch/arm/plat-nomadik/timer.c
parentcca8edfd2ec2a34d9f50f593bc753bb11e1bc1f5 (diff)
parent3c6b50141ef9f0a8844bf1357b80c0cdf518bf05 (diff)
Merge branch 'next' into for-linus
Diffstat (limited to 'arch/arm/plat-nomadik/timer.c')
-rw-r--r--arch/arm/plat-nomadik/timer.c31
1 files changed, 3 insertions, 28 deletions
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index 41723402006b..ef74e157a9d5 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -26,29 +26,6 @@
void __iomem *mtu_base; /* Assigned by machine code */
/*
- * Kernel assumes that sched_clock can be called early
- * but the MTU may not yet be initialized.
- */
-static cycle_t nmdk_read_timer_dummy(struct clocksource *cs)
-{
- return 0;
-}
-
-/* clocksource: MTU decrements, so we negate the value being read. */
-static cycle_t nmdk_read_timer(struct clocksource *cs)
-{
- return -readl(mtu_base + MTU_VAL(0));
-}
-
-static struct clocksource nmdk_clksrc = {
- .name = "mtu_0",
- .rating = 200,
- .read = nmdk_read_timer_dummy,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-/*
* Override the global weak sched_clock symbol with this
* local implementation which uses the clocksource to get some
* better resolution when scheduling the kernel.
@@ -172,12 +149,10 @@ void __init nmdk_timer_init(void)
writel(0, mtu_base + MTU_BGLR(0));
writel(cr | MTU_CRn_ENA, mtu_base + MTU_CR(0));
- /* Now the clock source is ready */
- nmdk_clksrc.read = nmdk_read_timer;
-
- if (clocksource_register_hz(&nmdk_clksrc, rate))
+ if (clocksource_mmio_init(mtu_base + MTU_VAL(0), "mtu_0",
+ rate, 200, 32, clocksource_mmio_readl_down))
pr_err("timer: failed to initialize clock source %s\n",
- nmdk_clksrc.name);
+ "mtu_0");
init_sched_clock(&cd, nomadik_update_sched_clock, 32, rate);