From 349ab52446772a359bc7e7699cae3880d48fa5c9 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Sun, 25 Dec 2011 21:36:02 +0100 Subject: 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 Signed-off-by: Chris Ball --- include/linux/mmc/cd-gpio.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/mmc/cd-gpio.h (limited to 'include/linux') 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 + * + * 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 -- cgit v1.2.1