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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-08 14:35:22 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-23 17:04:52 (GMT) |
| commit | c5039f52329ff796d7fea9024e5615abee02dbfb (patch) | |
| tree | 2434fede52e85f2a2315cfce76600fa777d98715 /arch/arm | |
| parent | 6fa5d5f764469daf3c4d21f94cbc1839b3857bbd (diff) | |
| download | linux-c5039f52329ff796d7fea9024e5615abee02dbfb.tar.xz | |
clocksource: convert Integrator/AP 16-bit down counting clocksource
Convert the Integrator/AP 16-bit down-counting clocksource to the
generic clocksource infrastructure.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-integrator/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/integrator_ap.c | 21 |
2 files changed, 4 insertions, 18 deletions
diff --git a/arch/arm/mach-integrator/Kconfig b/arch/arm/mach-integrator/Kconfig index d701d32..dfd18f3 100644 --- a/arch/arm/mach-integrator/Kconfig +++ b/arch/arm/mach-integrator/Kconfig @@ -4,6 +4,7 @@ menu "Integrator Options" config ARCH_INTEGRATOR_AP bool "Support Integrator/AP and Integrator/PP2 platforms" + select CLKSRC_MMIO select MIGHT_HAVE_PCI help Include support for the ARM(R) Integrator/AP and diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index d3e9645..6b15128 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -335,25 +335,9 @@ static void __init ap_init(void) static unsigned long timer_reload; -static void __iomem * const clksrc_base = (void __iomem *)TIMER2_VA_BASE; - -static cycle_t timersp_read(struct clocksource *cs) -{ - return ~(readl(clksrc_base + TIMER_VALUE) & 0xffff); -} - -static struct clocksource clocksource_timersp = { - .name = "timer2", - .rating = 200, - .read = timersp_read, - .mask = CLOCKSOURCE_MASK(16), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - static void integrator_clocksource_init(u32 khz) { - struct clocksource *cs = &clocksource_timersp; - void __iomem *base = clksrc_base; + void __iomem *base = (void __iomem *)TIMER2_VA_BASE; u32 ctrl = TIMER_CTRL_ENABLE; if (khz >= 1500) { @@ -364,7 +348,8 @@ static void integrator_clocksource_init(u32 khz) writel(ctrl, base + TIMER_CTRL); writel(0xffff, base + TIMER_LOAD); - clocksource_register_khz(cs, khz); + clocksource_mmio_init(base + TIMER_VALUE, "timer2", + khz * 1000, 200, 16, clocksource_mmio_readl_down); } static void __iomem * const clkevt_base = (void __iomem *)TIMER1_VA_BASE; |