[PATCH 08/17] spi: pl022: Fully gate clocks at request inactivity
From: Ulf Hansson <hidden>
Date: 2014-02-04 15:59:48
Also in:
linux-i2c, linux-mmc, linux-spi, lkml
Subsystem:
arm primecell ssp pl022 spi driver, spi subsystem, the rest · Maintainers:
Linus Walleij, Mark Brown, Linus Torvalds
Use clk_disable_unprepare and clk_prepare_enable from the runtime PM callbacks, to fully gate|ungate clocks. Potentially this will save more power, depending on the clock tree for the current SOC. Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Ulf Hansson <redacted> --- drivers/spi/spi-pl022.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index db829a1..2bb238f 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c@@ -2355,7 +2355,7 @@ static int pl022_runtime_suspend(struct device *dev) { struct pl022 *pl022 = dev_get_drvdata(dev); - clk_disable(pl022->clk); + clk_disable_unprepare(pl022->clk); pinctrl_pm_select_idle_state(dev); return 0;
@@ -2366,7 +2366,7 @@ static int pl022_runtime_resume(struct device *dev) struct pl022 *pl022 = dev_get_drvdata(dev); pinctrl_pm_select_default_state(dev); - clk_enable(pl022->clk); + clk_prepare_enable(pl022->clk); return 0; }
--
1.7.9.5