[PATCH 06/11] ARM: pxa: convert timer suspend/resume to clock_event_device
From: Eric Miao <hidden>
Date: 2012-11-09 02:06:07
Also in:
linux-arch, lkml
On Fri, Nov 9, 2012 at 5:01 AM, Stephen Warren [off-list ref] wrote:
From: Stephen Warren <redacted> Move PXA's timer suspend/resume functions from struct sys_timer pxa_timer into struct clock_event_device ckevt_pxa_osmr0. This will allow the sys_timer suspend/resume fields to be removed, and eventually lead to a complete removal of struct sys_timer. Cc: Eric Miao <redacted> Cc: Russell King <redacted> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Stephen Warren <redacted>
Acked-by: Eric Miao <redacted>
quoted hunk ↗ jump to hunk
--- arch/arm/mach-pxa/time.c | 76 +++++++++++++++++++++++----------------------- 1 files changed, 38 insertions(+), 38 deletions(-)diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c index 4bc47d6..ce58bc9 100644 --- a/arch/arm/mach-pxa/time.c +++ b/arch/arm/mach-pxa/time.c@@ -89,12 +89,50 @@ pxa_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *dev) } } +#ifdef CONFIG_PM +static unsigned long osmr[4], oier, oscr; + +static void pxa_timer_suspend(struct clock_event_device *cedev) +{ + osmr[0] = readl_relaxed(OSMR0); + osmr[1] = readl_relaxed(OSMR1); + osmr[2] = readl_relaxed(OSMR2); + osmr[3] = readl_relaxed(OSMR3); + oier = readl_relaxed(OIER); + oscr = readl_relaxed(OSCR); +} + +static void pxa_timer_resume(struct clock_event_device *cedev) +{ + /* + * Ensure that we have at least MIN_OSCR_DELTA between match + * register 0 and the OSCR, to guarantee that we will receive + * the one-shot timer interrupt. We adjust OSMR0 in preference + * to OSCR to guarantee that OSCR is monotonically incrementing. + */ + if (osmr[0] - oscr < MIN_OSCR_DELTA) + osmr[0] += MIN_OSCR_DELTA; + + writel_relaxed(osmr[0], OSMR0); + writel_relaxed(osmr[1], OSMR1); + writel_relaxed(osmr[2], OSMR2); + writel_relaxed(osmr[3], OSMR3); + writel_relaxed(oier, OIER); + writel_relaxed(oscr, OSCR); +} +#else +#define pxa_timer_suspend NULL +#define pxa_timer_resume NULL +#endif + static struct clock_event_device ckevt_pxa_osmr0 = { .name = "osmr0", .features = CLOCK_EVT_FEAT_ONESHOT, .rating = 200, .set_next_event = pxa_osmr0_set_next_event, .set_mode = pxa_osmr0_set_mode, + .suspend = pxa_timer_suspend, + .resume = pxa_timer_resume, }; static struct irqaction pxa_ost0_irq = {@@ -127,44 +165,6 @@ static void __init pxa_timer_init(void) clockevents_register_device(&ckevt_pxa_osmr0); } -#ifdef CONFIG_PM -static unsigned long osmr[4], oier, oscr; - -static void pxa_timer_suspend(void) -{ - osmr[0] = readl_relaxed(OSMR0); - osmr[1] = readl_relaxed(OSMR1); - osmr[2] = readl_relaxed(OSMR2); - osmr[3] = readl_relaxed(OSMR3); - oier = readl_relaxed(OIER); - oscr = readl_relaxed(OSCR); -} - -static void pxa_timer_resume(void) -{ - /* - * Ensure that we have at least MIN_OSCR_DELTA between match - * register 0 and the OSCR, to guarantee that we will receive - * the one-shot timer interrupt. We adjust OSMR0 in preference - * to OSCR to guarantee that OSCR is monotonically incrementing. - */ - if (osmr[0] - oscr < MIN_OSCR_DELTA) - osmr[0] += MIN_OSCR_DELTA; - - writel_relaxed(osmr[0], OSMR0); - writel_relaxed(osmr[1], OSMR1); - writel_relaxed(osmr[2], OSMR2); - writel_relaxed(osmr[3], OSMR3); - writel_relaxed(oier, OIER); - writel_relaxed(oscr, OSCR); -} -#else -#define pxa_timer_suspend NULL -#define pxa_timer_resume NULL -#endif - struct sys_timer pxa_timer = { .init = pxa_timer_init, - .suspend = pxa_timer_suspend, - .resume = pxa_timer_resume, }; --1.7.0.4