[PATCH 1/2] spi:pl022: Disable/Enable functional clock from suspend/resume
From: Vipul Kumar Samar <hidden>
Date: 2012-09-26 11:24:06
Also in:
linux-arm-kernel
Subsystem:
arm primecell ssp pl022 spi driver, spi subsystem, the rest · Maintainers:
Linus Walleij, Mark Brown, Linus Torvalds
SPI functional clock must be disalble/enable in non RTPM suspend/resume hooks. Currently it is only done for RTPM cases. This patch add support to disable/enbale clock for conventional suspend/resume calls. Signed-off-by: Vipul Kumar Samar <redacted> --- drivers/spi/spi-pl022.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f2a80ff..09fb09e 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c@@ -2310,6 +2310,8 @@ static int pl022_suspend(struct device *dev) } dev_dbg(dev, "suspended\n"); + clk_disable(pl022->clk); + return 0; }
@@ -2318,6 +2320,12 @@ static int pl022_resume(struct device *dev) struct pl022 *pl022 = dev_get_drvdata(dev); int ret; + ret = clk_enable(pl022->clk); + if (ret) { + dev_err(dev, "could not enable SSP/SPI bus clock\n"); + return ret; + } + /* Start the queue running */ ret = spi_master_resume(pl022->master); if (ret)
--
1.7.10
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