[06/12] exynos-gsc: Do full clock gating at runtime PM suspend

Message ID 1478701441-29107-7-git-send-email-m.szyprowski@samsung.com
State New
Headers show

Commit Message

Marek Szyprowski Nov. 9, 2016, 2:23 p.m.
From: Ulf Hansson <ulf.hansson@linaro.org>


To potentially save more power in runtime PM suspend state, let's also
prepare/unprepare the clock from the runtime PM callbacks.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

[mszyprow: rebased onto v4.9-rc4]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

---
 drivers/media/platform/exynos-gsc/gsc-core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
1.9.1

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Patch

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index 1d3bde3..9ba1619 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1141,7 +1141,7 @@  static int gsc_runtime_resume(struct device *dev)
 
 	pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state);
 
-	ret = clk_enable(gsc->clock);
+	ret = clk_prepare_enable(gsc->clock);
 	if (ret)
 		return ret;
 
@@ -1159,7 +1159,7 @@  static int gsc_runtime_suspend(struct device *dev)
 
 	ret = gsc_m2m_suspend(gsc);
 	if (!ret)
-		clk_disable(gsc->clock);
+		clk_disable_unprepare(gsc->clock);
 
 	pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state);
 	return ret;