Hi Shawn,
On 2016/10/8 10:40, Shawn Lin wrote:
> 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.
Thanks a lot for your reply.
Our SDHC driver just requests some pre- and post- operations besides common standard SDHC functions.
Overwriting those common functions costs too much.
Thank you.
Best regards,
Hu Ziji
>
>> 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);
>>
>
>
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