From: Masahiro Yamada Date: Wed, 17 Jan 2018 16:28:05 +0000 (+0900) Subject: mmc: slot-gpio: add a helper to check capability of GPIO WP detection X-Git-Tag: v4.19~1768^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e;p=platform%2Fkernel%2Flinux-rpi.git 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: Masahiro Yamada Signed-off-by: Ulf Hansson --- diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index f7c6e0542de7..3698b0576009 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -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); diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h index 82f0d289f110..91f1ba0663c8 100644 --- a/include/linux/mmc/slot-gpio.h +++ b/include/linux/mmc/slot-gpio.h @@ -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