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mmc: slot-gpio: add a helper to check capability of GPIO WP detection

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Like mmc_can_gpio_cd(), mmc_can_gpio_ro() will also be useful for host
drivers to know whether GPIO write-protect detection is supported.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Masahiro Yamada
2018-01-18 01:28:05 +09:00
committed by Ulf Hansson
parent bc45719c1b
commit 85f9ef8cdf
2 changed files with 9 additions and 0 deletions
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include/linux/mmc/slot-gpio.h
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@@ -33,5 +33,6 @@ 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);
bool mmc_can_gpio_ro(struct mmc_host *host);
#endif