mmc: mmci: add explicit clk control
On Controllers like Qcom SD card controller where cclk is mclk and mclk should
be directly controlled by the driver.
This patch adds support to control mclk directly in the driver, and also
adds explicit_mclk_control flag in variant structure giving more flexibility
to the driver.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf Hansson] Fixed checkpatch warning
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index d38a99d..ef34617 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -208,6 +208,8 @@
spinlock_t lock;
unsigned int mclk;
+ /* cached value of requested clk in set_ios */
+ unsigned int clock_cache;
unsigned int cclk;
u32 pwr_reg;
u32 pwr_reg_add;