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ARM: EXYNOS: Call regulator core suspend prepare and finish functions

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The regulator framework has a set of helpers functions to be used when
the system is entering and leaving from suspend but these are not called
on Exynos platforms. This means that the .set_suspend_* function handlers
defined by regulator drivers are not called when the system is suspended.

Suggested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Javier Martinez Canillas 2014-11-13 11:14:40 +09:00 committed by Kukjin Kim
parent adc548d77c
commit c645a598f9
1 changed files with 23 additions and 0 deletions
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23
arch/arm/mach-exynos/suspend.c
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@ -20,6 +20,7 @@
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/err.h>
#include <linux/regulator/machine.h>
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
@ -443,6 +444,22 @@ static int exynos_suspend_enter(suspend_state_t state)
static int exynos_suspend_prepare(void)
{
int ret;
/*
* REVISIT: It would be better if struct platform_suspend_ops
* .prepare handler get the suspend_state_t as a parameter to
* avoid hard-coding the suspend to mem state. It's safe to do
* it now only because the suspend_valid_only_mem function is
* used as the .valid callback used to check if a given state
* is supported by the platform anyways.
*/
ret = regulator_suspend_prepare(PM_SUSPEND_MEM);
if (ret) {
pr_err("Failed to prepare regulators for suspend (%d)\n", ret);
return ret;
}
s3c_pm_check_prepare();
return 0;
@ -450,7 +467,13 @@ static int exynos_suspend_prepare(void)
static void exynos_suspend_finish(void)
{
int ret;
s3c_pm_check_cleanup();
ret = regulator_suspend_finish();
if (ret)
pr_warn("Failed to resume regulators from suspend (%d)\n", ret);
}
static const struct platform_suspend_ops exynos_suspend_ops = {