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authorVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>2012-06-12 15:10:58 +0200
committerLinus Walleij <linus.walleij@linaro.org>2012-07-02 13:55:36 +0200
commitfd316941cfee1fbd12746afea83720fb7823888a (patch)
tree9cb6938b756aebfdf125dbe7e829bca296014a8b /drivers/spi
parent6887a4131da3adaab011613776d865f4bcfb5678 (diff)
downloadlinux-fd316941cfee1fbd12746afea83720fb7823888a.tar.bz2
spi/pl022: disable port when unused
Commit ffbbdd21329f3e15eeca6df2d4bc11c04d9d91c0 "spi: create a message queueing infrastructure" Accidentally deleted the logic to disable the port when unused leading to higher power consumption. Fix this up. Cc: stable@kernel.org Cc: Vinit Shenoy <vinit.shenoy@st.com> Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-pl022.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 400ae2121a2a..469eb28e8328 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -489,6 +489,11 @@ static void giveback(struct pl022 *pl022)
pl022->cur_transfer = NULL;
pl022->cur_chip = NULL;
spi_finalize_current_message(pl022->master);
+
+ /* disable the SPI/SSP operation */
+ writew((readw(SSP_CR1(pl022->virtbase)) &
+ (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase));
+
}
/**