提交 85f9ef8c 编写于 作者: M Masahiro Yamada 提交者: Ulf Hansson

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

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: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
上级 bc45719c
......@@ -305,3 +305,11 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
return 0;
}
EXPORT_SYMBOL(mmc_gpiod_request_ro);
bool mmc_can_gpio_ro(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
return ctx->ro_gpio ? true : false;
}
EXPORT_SYMBOL(mmc_can_gpio_ro);
......@@ -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
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