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clocksource: convert ARM 32-bit up counting clocksources

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Convert ixp4xx, lpc32xx, mxc, netx, pxa, sa1100, tcc8k, tegra and u300
to use the generic mmio clocksource recently introduced.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: "Hans J. Koch" <hjk@hansjkoch.de>
Acked-by: Colin Cross <ccross@android.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Olof Johansson <olof@lixom.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-05-08 14:09:47 +01:00
parent 442c8176d2
commit 234b6ceddb
10 changed files with 34 additions and 145 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/arm/mach-u300/timer.c
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@@ -333,20 +333,6 @@ static struct irqaction u300_timer_irq = {
.handler = u300_timer_interrupt,
};
/* Use general purpose timer 2 as clock source */
static cycle_t u300_get_cycles(struct clocksource *cs)
{
return (cycles_t) readl(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC);
}
static struct clocksource clocksource_u300_1mhz = {
.name = "GPT2",
.rating = 300, /* Reasonably fast and accurate clock source */
.read = u300_get_cycles,
.mask = CLOCKSOURCE_MASK(32), /* 32 bits */
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
/*
* Override the global weak sched_clock symbol with this
* local implementation which uses the clocksource to get some
@@ -422,7 +408,9 @@ static void __init u300_timer_init(void)
writel(U300_TIMER_APP_EGPT2_TIMER_ENABLE,
U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT2);
if (clocksource_register_hz(&clocksource_u300_1mhz, rate))
/* Use general purpose timer 2 as clock source */
if (clocksource_mmio_init(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC,
"GPT2", rate, 300, 32, clocksource_mmio_readl_up))
printk(KERN_ERR "timer: failed to initialize clock "
"source %s\n", clocksource_u300_1mhz.name);