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authorStephen Warren <swarren@nvidia.com>2012-11-08 00:32:41 +0100
committerStephen Warren <swarren@nvidia.com>2012-12-24 17:36:35 +0100
commit49356ae94c8238eb3945244f4e5a0a263eafba24 (patch)
treecac5332bbe41903451091d43fa3fca82b7faf5a7 /arch
parentARM: set arch_gettimeoffset directly (diff)
downloadlinux-49356ae94c8238eb3945244f4e5a0a263eafba24.tar.xz
linux-49356ae94c8238eb3945244f4e5a0a263eafba24.zip
ARM: at91: convert timer suspend/resume to clock_event_device
Move at91's timer suspend/resume functions from struct sys_timer at91sam926x_timer into struct clock_event_device pit_clkevt. This will allow the sys_timer suspend/resume fields to be removed, and eventually lead to a complete removal of struct sys_timer. Cc: Andrew Victor <linux@maxim.org.za> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-at91/at91sam926x_time.c47
1 files changed, 26 insertions, 21 deletions
diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index 358412f1f5f8..f7191e11df27 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -104,12 +104,38 @@ pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
}
}
+static void at91sam926x_pit_suspend(struct clock_event_device *cedev)
+{
+ /* Disable timer */
+ pit_write(AT91_PIT_MR, 0);
+}
+
+static void at91sam926x_pit_reset(void)
+{
+ /* Disable timer and irqs */
+ pit_write(AT91_PIT_MR, 0);
+
+ /* Clear any pending interrupts, wait for PIT to stop counting */
+ while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0)
+ cpu_relax();
+
+ /* Start PIT but don't enable IRQ */
+ pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);
+}
+
+static void at91sam926x_pit_resume(struct clock_event_device *cedev)
+{
+ at91sam926x_pit_reset();
+}
+
static struct clock_event_device pit_clkevt = {
.name = "pit",
.features = CLOCK_EVT_FEAT_PERIODIC,
.shift = 32,
.rating = 100,
.set_mode = pit_clkevt_mode,
+ .suspend = at91sam926x_pit_suspend,
+ .resume = at91sam926x_pit_resume,
};
@@ -150,19 +176,6 @@ static struct irqaction at91sam926x_pit_irq = {
.irq = NR_IRQS_LEGACY + AT91_ID_SYS,
};
-static void at91sam926x_pit_reset(void)
-{
- /* Disable timer and irqs */
- pit_write(AT91_PIT_MR, 0);
-
- /* Clear any pending interrupts, wait for PIT to stop counting */
- while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0)
- cpu_relax();
-
- /* Start PIT but don't enable IRQ */
- pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);
-}
-
#ifdef CONFIG_OF
static struct of_device_id pit_timer_ids[] = {
{ .compatible = "atmel,at91sam9260-pit" },
@@ -250,12 +263,6 @@ static void __init at91sam926x_pit_init(void)
clockevents_register_device(&pit_clkevt);
}
-static void at91sam926x_pit_suspend(void)
-{
- /* Disable timer */
- pit_write(AT91_PIT_MR, 0);
-}
-
void __init at91sam926x_ioremap_pit(u32 addr)
{
#if defined(CONFIG_OF)
@@ -275,6 +282,4 @@ void __init at91sam926x_ioremap_pit(u32 addr)
struct sys_timer at91sam926x_timer = {
.init = at91sam926x_pit_init,
- .suspend = at91sam926x_pit_suspend,
- .resume = at91sam926x_pit_reset,
};