mmc: core: add WP pin handler to slot functions
Card Write-Protect pin is often implemented, using a GPIO, which makes
it simple to provide a generic handler for it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h
index 1a977d7..7d88d27 100644
--- a/include/linux/mmc/slot-gpio.h
+++ b/include/linux/mmc/slot-gpio.h
@@ -13,6 +13,10 @@
struct mmc_host;
+int mmc_gpio_get_ro(struct mmc_host *host);
+int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio);
+void mmc_gpio_free_ro(struct mmc_host *host);
+
int mmc_gpio_get_cd(struct mmc_host *host);
int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio);
void mmc_gpio_free_cd(struct mmc_host *host);