clocksource: convert ARM 32-bit down counting clocksources
Convert SP804, MXC, Nomadik and Orion 32-bit down-counting clocksources
to generic mmio clocksource infrastructure.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Alessandro Rubini <rubini@unipv.it>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-orion/time.c b/arch/arm/plat-orion/time.c
index 742b032..69a6136 100644
--- a/arch/arm/plat-orion/time.c
+++ b/arch/arm/plat-orion/time.c
@@ -81,24 +81,6 @@
}
/*
- * Clocksource handling.
- */
-static cycle_t orion_clksrc_read(struct clocksource *cs)
-{
- return 0xffffffff - readl(timer_base + TIMER0_VAL_OFF);
-}
-
-static struct clocksource orion_clksrc = {
- .name = "orion_clocksource",
- .rating = 300,
- .read = orion_clksrc_read,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-
-
-/*
* Clockevent handling.
*/
static int
@@ -247,7 +229,8 @@
writel(u & ~BRIDGE_INT_TIMER0, bridge_base + BRIDGE_MASK_OFF);
u = readl(timer_base + TIMER_CTRL_OFF);
writel(u | TIMER0_EN | TIMER0_RELOAD_EN, timer_base + TIMER_CTRL_OFF);
- clocksource_register_hz(&orion_clksrc, tclk);
+ clocksource_mmio_init(timer_base + TIMER0_VAL_OFF, "orion_clocksource",
+ tclk, 300, 32, clocksource_mmio_readl_down);
/*
* Setup clockevent timer (interrupt-driven).