diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-12-25 21:36:02 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-01-11 23:58:45 -0500 |
| commit | 349ab52446772a359bc7e7699cae3880d48fa5c9 (patch) | |
| tree | ea51e81f4cd78375172063fac266885d11efad0e /include/linux/mmc/cd-gpio.h | |
| parent | b67e198073b2d2f16572f5fa77553fec14775f69 (diff) | |
| download | linux-stable-349ab52446772a359bc7e7699cae3880d48fa5c9.tar.gz linux-stable-349ab52446772a359bc7e7699cae3880d48fa5c9.tar.bz2 linux-stable-349ab52446772a359bc7e7699cae3880d48fa5c9.zip | |
mmc: add a generic GPIO card-detect helper
This patch adds a primitive helper to support card hotplug detection on
platforms, where a GPIO, capable of producing interrupts, is used for
detection of card-insertion and -removal events.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/cd-gpio.h')
| -rw-r--r-- | include/linux/mmc/cd-gpio.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/mmc/cd-gpio.h b/include/linux/mmc/cd-gpio.h new file mode 100644 index 000000000000..a8e469783318 --- /dev/null +++ b/include/linux/mmc/cd-gpio.h @@ -0,0 +1,19 @@ +/* + * 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_CD_GPIO_H +#define MMC_CD_GPIO_H + +struct mmc_host; +int mmc_cd_gpio_request(struct mmc_host *host, unsigned int gpio, + unsigned int irq, unsigned long flags); +void mmc_cd_gpio_free(struct mmc_host *host); + +#endif |