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Commit 50fcbbbb authored by Shawn Lin's avatar Shawn Lin Committed by Ulf Hansson
Browse files

mmc: core: expose the capability of gpio card detect 



Add new helper API mmc_can_gpio_cd for slot-gpio to make
host drivers know whether it supports gpio card detect.

Signed-off-by: default avatarShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent f9014268

drivers/mmc/core/slot-gpio.c

+8 −0
Original line number Diff line number Diff line
@@ -258,6 +258,14 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id, 
}

EXPORT_SYMBOL(mmc_gpiod_request_cd);



bool mmc_can_gpio_cd(struct mmc_host *host)

{

	struct mmc_gpio *ctx = host->slot.handler_priv;



	return ctx->cd_gpio ? true : false;

}

EXPORT_SYMBOL(mmc_can_gpio_cd);



/**

 * mmc_gpiod_request_ro - request a gpio descriptor for write protection

 * @host: mmc host

include/linux/mmc/slot-gpio.h

+1 −0
Original line number Diff line number Diff line
@@ -29,5 +29,6 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id, 
void mmc_gpio_set_cd_isr(struct mmc_host *host,

			 irqreturn_t (*isr)(int irq, void *dev_id));

void mmc_gpiod_request_cd_irq(struct mmc_host *host);

bool mmc_can_gpio_cd(struct mmc_host *host);



#endif