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>
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@ -4,6 +4,7 @@ menu "Integrator Options"
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config ARCH_INTEGRATOR_AP
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bool "Support Integrator/AP and Integrator/PP2 platforms"
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select CLKSRC_MMIO
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select MIGHT_HAVE_PCI
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help
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Include support for the ARM(R) Integrator/AP and
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@ -335,25 +335,9 @@ static void __init ap_init(void)
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static unsigned long timer_reload;
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static void __iomem * const clksrc_base = (void __iomem *)TIMER2_VA_BASE;
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static cycle_t timersp_read(struct clocksource *cs)
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{
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return ~(readl(clksrc_base + TIMER_VALUE) & 0xffff);
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}
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static struct clocksource clocksource_timersp = {
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.name = "timer2",
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.rating = 200,
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.read = timersp_read,
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.mask = CLOCKSOURCE_MASK(16),
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.flags = CLOCK_SOURCE_IS_CONTINUOUS,
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};
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static void integrator_clocksource_init(u32 khz)
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{
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struct clocksource *cs = &clocksource_timersp;
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void __iomem *base = clksrc_base;
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void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
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u32 ctrl = TIMER_CTRL_ENABLE;
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if (khz >= 1500) {
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@ -364,7 +348,8 @@ static void integrator_clocksource_init(u32 khz)
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writel(ctrl, base + TIMER_CTRL);
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writel(0xffff, base + TIMER_LOAD);
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clocksource_register_khz(cs, khz);
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clocksource_mmio_init(base + TIMER_VALUE, "timer2",
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khz * 1000, 200, 16, clocksource_mmio_readl_down);
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}
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static void __iomem * const clkevt_base = (void __iomem *)TIMER1_VA_BASE;
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