diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-01-18 01:28:05 +0900 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-01-18 09:08:56 +0100 |
| commit | 85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e (patch) | |
| tree | c10cb09051ce0191129171a5a496de91d33db8d3 /drivers/mmc | |
| parent | bc45719c1b1a56047246d44c7e4ed88a8ae702c1 (diff) | |
| download | lwn-85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e.tar.gz lwn-85f9ef8cdfb463e6e8ff9fe8cdcc0aed438b526e.zip | |
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 <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/slot-gpio.c | 8 |
1 files changed, 8 insertions, 0 deletions
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); |