diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-09 08:51:03 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-23 17:04:52 (GMT) |
| commit | 933e54a53ccb68543ffb7ea32168ea086c93d09a (patch) | |
| tree | 5c6b80c621855de26bfd25245cde977347da64b2 /arch/arm | |
| parent | 5c61ddcfaf98fae4a0ac8077b06a07fb2ba6864a (diff) | |
| download | linux-933e54a53ccb68543ffb7ea32168ea086c93d09a.tar.xz | |
clocksource: convert OMAP1 to 32-bit down counting clocksource
Convert the OMAP1 32-bit down counting clocksource to the generic
clocksource infrastructure.
Tested-by: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap1/time.c | 23 | ||||
| -rw-r--r-- | arch/arm/plat-omap/Kconfig | 1 |
2 files changed, 7 insertions, 17 deletions
diff --git a/arch/arm/mach-omap1/time.c b/arch/arm/mach-omap1/time.c index e7ab616..03e1e10 100644 --- a/arch/arm/mach-omap1/time.c +++ b/arch/arm/mach-omap1/time.c @@ -190,24 +190,11 @@ static __init void omap_init_mpu_timer(unsigned long rate) * --------------------------------------------------------------------------- */ -static cycle_t mpu_read(struct clocksource *cs) -{ - return ~omap_mpu_timer_read(1); -} - -static struct clocksource clocksource_mpu = { - .name = "mpu_timer2", - .rating = 300, - .read = mpu_read, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - static DEFINE_CLOCK_DATA(cd); static inline unsigned long long notrace _omap_mpu_sched_clock(void) { - u32 cyc = mpu_read(&clocksource_mpu); + u32 cyc = ~omap_mpu_timer_read(1); return cyc_to_sched_clock(&cd, cyc, (u32)~0); } @@ -225,20 +212,22 @@ static unsigned long long notrace omap_mpu_sched_clock(void) static void notrace mpu_update_sched_clock(void) { - u32 cyc = mpu_read(&clocksource_mpu); + u32 cyc = ~omap_mpu_timer_read(1); update_sched_clock(&cd, cyc, (u32)~0); } static void __init omap_init_clocksource(unsigned long rate) { + omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(1); static char err[] __initdata = KERN_ERR "%s: can't register clocksource!\n"; omap_mpu_timer_start(1, ~0, 1); init_sched_clock(&cd, mpu_update_sched_clock, 32, rate); - if (clocksource_register_hz(&clocksource_mpu, rate)) - printk(err, clocksource_mpu.name); + if (clocksource_mmio_init(&timer->read_tim, "mpu_timer2", rate, + 300, 32, clocksource_mmio_readl_down)) + printk(err, "mpu_timer2"); } static void __init omap_mpu_timer_init(void) diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index cd5f993..e9c0efc 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -12,6 +12,7 @@ choice config ARCH_OMAP1 bool "TI OMAP1" select CLKDEV_LOOKUP + select CLKSRC_MMIO help "Systems based on omap7xx, omap15xx or omap16xx" |