diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-04-30 23:31:57 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-07-10 23:04:04 -0400 |
| commit | fd0ea65d3e675e479e022b6cfc9ebe1864c76afc (patch) | |
| tree | 8869d7965ccb05b9ca635d21c983d84a552ee21e /include/linux/mmc/slot-gpio.h | |
| parent | 0f506a96693d8ad4aeccbd98dbd54a3c7357cfa8 (diff) | |
mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but
also to implement the write-protection pin. Rename cd-gpio helpers to
slot-gpio to make addition of further slot GPIO functions possible.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/slot-gpio.h')
| -rw-r--r-- | include/linux/mmc/slot-gpio.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h new file mode 100644 index 000000000000..edfaa3254373 --- /dev/null +++ b/include/linux/mmc/slot-gpio.h @@ -0,0 +1,18 @@ +/* + * Generic GPIO card-detect helper header + * + * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef MMC_SLOT_GPIO_H +#define MMC_SLOT_GPIO_H + +struct mmc_host; +int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio); +void mmc_gpio_free_cd(struct mmc_host *host); + +#endif |