mmc: sdhci: Factor out sdhci_enable_clk

Factor out sdhci_enable_clk from sdhci_set_clock
and make it EXPORT_SYMBOL so that it can be called.

Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index d08d50724619dc8e343c9c6ed333b032c7409c35..62aedf191b0c9dd593f6622cc2594da425ca20c0 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1344,20 +1344,10 @@ clock_set:
 }
 EXPORT_SYMBOL_GPL(sdhci_calc_clk);
 
-void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
 {
-       u16 clk;
        unsigned long timeout;
 
-       host->mmc->actual_clock = 0;
-
-       sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
-
-       if (clock == 0)
-               return;
-
-       clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
-
        clk |= SDHCI_CLOCK_INT_EN;
        sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 
@@ -1378,6 +1368,22 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
        clk |= SDHCI_CLOCK_CARD_EN;
        sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 }
+EXPORT_SYMBOL_GPL(sdhci_enable_clk);
+
+void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+       u16 clk;
+
+       host->mmc->actual_clock = 0;
+
+       sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+       if (clock == 0)
+               return;
+
+       clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+       sdhci_enable_clk(host, clk);
+}
 EXPORT_SYMBOL_GPL(sdhci_set_clock);
 
 static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,

diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 9c357760b1cd280098aa5f98e9fdbb6817ac865d..2fe9e8053359afdd9d3e9df0c96a8fa107b8b3cd 100644 (file)
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -682,6 +682,7 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
 u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
                   unsigned int *actual_clock);
 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
+void sdhci_enable_clk(struct sdhci_host *host, u16 clk);
 void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
                     unsigned short vdd);
 void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,