kernel/include/linux/mmc/slot-gpio.h, branch linux-3.17.y

mmc: slot-gpio: Add GPIO descriptor based CD GPIO API

2014-03-17T13:12:00Z

Add functions to request a CD GPIO using the GPIO descriptor API. Note that the new request function is paired with mmc_gpiod_free_cd() not mmc_gpio_free_cd(). Note also that it must be called prior to mmc_add_host() otherwise the caller must also call mmc_gpiod_request_cd_irq(). Signed-off-by: Adrian Hunter Reviewed-by: Linus Walleij Signed-off-by: Chris Ball

mmc: slot-gpio: Add debouncing capability to mmc_gpio_request_cd()

2013-08-25T03:45:09Z

Add a debounce parameter to the mmc_gpio_request_cd() function that enables GPIO debouncing when set to a non-zero value. This can be used by MMC host drivers to enable debouncing on the card detect signal. Signed-off-by: Laurent Pinchart Reviewed-by: H Hartley Sweeten Signed-off-by: Chris Ball

mmc: core: add WP pin handler to slot functions

2012-07-21T04:02:18Z

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 Signed-off-by: Chris Ball

mmc: add CD GPIO polling support to slot functions

2012-07-21T04:02:17Z

A simple extension of mmc slot functions add support for CD GPIO polling for cases where the GPIO cannot produce interrupts, or where this is not desired for some reason. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball

mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions

2012-07-11T03:04:04Z

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 Signed-off-by: Chris Ball