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mmc: core: add WP pin handler to slot functions

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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>
This commit is contained in:
Guennadi Liakhovetski
2012-05-01 16:59:38 +02:00
committed by Chris Ball
parent a7d1a1ebd8
commit 5aa7dad305
2 changed files with 55 additions and 1 deletions
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4
include/linux/mmc/slot-gpio.h
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@@ -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);