From 85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 18 Jan 2018 01:28:05 +0900 Subject: [PATCH] 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 --- drivers/mmc/core/slot-gpio.c | 8 ++++++++ include/linux/mmc/slot-gpio.h | 1 + 2 files changed, 9 insertions(+) diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index f7c6e05..3698b05 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 82f0d28..91f1ba0 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 -- 2.7.4