From c5039f52329ff796d7fea9024e5615abee02dbfb Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 May 2011 15:35:22 +0100 Subject: [PATCH] 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 --- arch/arm/mach-integrator/Kconfig | 1 + 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 d701d32a07f1..dfd18f3b50e8 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 d3e96451529c..6b151288f66c 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; -- 2.20.1