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mmc: sdhci: Factor out sdhci_enable_clk

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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>
This commit is contained in:
Ritesh Harjani 2016-11-21 12:07:19 +05:30 committed by Ulf Hansson
parent a0e3142869
commit fec7967397
2 changed files with 18 additions and 11 deletions
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28
drivers/mmc/host/sdhci.c
View File

@ -1344,20 +1344,10 @@ clock_set:
} }
EXPORT_SYMBOL_GPL(sdhci_calc_clk); 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; 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; clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 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; clk |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 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); EXPORT_SYMBOL_GPL(sdhci_set_clock);
static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode, static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,

1
drivers/mmc/host/sdhci.h
View File

@ -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, u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
unsigned int *actual_clock); unsigned int *actual_clock);
void sdhci_set_clock(struct sdhci_host *host, unsigned int 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, void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
unsigned short vdd); unsigned short vdd);
void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,