diff options
| author | Shawn Lin <shawn.lin@rock-chips.com> | 2016-10-12 05:50:37 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-11-29 11:00:37 +0300 |
| commit | 50fcbbbb79de4b95a765ea170677c9810fcb9cee (patch) | |
| tree | 6a9abe578055294f8ff50bda912aa53fe0de60da | |
| parent | f90142683f04bcb0729bf0df67a5e29562b725b9 (diff) | |
| download | linux-50fcbbbb79de4b95a765ea170677c9810fcb9cee.tar.xz | |
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: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/slot-gpio.c | 8 | ||||
| -rw-r--r-- | include/linux/mmc/slot-gpio.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index 27117ba47073..babe591aea96 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -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 diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h index 3945a8c9d3cb..a7972cd3bc14 100644 --- a/include/linux/mmc/slot-gpio.h +++ b/include/linux/mmc/slot-gpio.h @@ -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 |