Hi,
在 2016/10/7 23:22, Gregory CLEMENT 写道:
From: Ziji Hu <huziji@xxxxxxxxxxx>
Export sdhci_start_signal_voltage_switch() from sdhci.c.
Thus vendor sdhci driver can implement its own signal voltage
switch routine.
You can overwtite this callback within your driver itself.
That is what other sdhci variant drivers did, so patch 1-3 are
unnecessary.
Signed-off-by: Hu Ziji <huziji@xxxxxxxxxxx>
Reviewed-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 5 +++--
drivers/mmc/host/sdhci.h | 2 ++
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index d4bb818c52d5..2250ea22231f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1828,8 +1828,8 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
spin_unlock_irqrestore(&host->lock, flags);
}
-static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
- struct mmc_ios *ios)
+int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
+ struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
u16 ctrl;
@@ -1921,6 +1921,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
return 0;
}
}
+EXPORT_SYMBOL_GPL(sdhci_start_signal_voltage_switch);
static int sdhci_card_busy(struct mmc_host *mmc)
{
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 21dc80b8ae3d..c38ab65b9a97 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -687,6 +687,8 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
+int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
+ struct mmc_ios *ios);
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host);
--
Best Regards
Shawn Lin
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