linux-stable/include/linux/gpio
Chuanhong Guo d19d2de61f gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT
Some gpio controllers ignores pin value writing when that pin is
configured as input mode. As a result, bgpio_dir_out should set
pin to output before configuring pin values or gpio pin values
can't be set up properly.
Introduce two variants of bgpio_dir_out: bgpio_dir_out_val_first
and bgpio_dir_out_dir_first, and assign direction_output according
to a new flag: BGPIOF_NO_SET_ON_INPUT.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Tested-by: René van Dorst <opensource@vdorst.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-03-25 09:50:45 +01:00
..
aspeed.h gpio: aspeed: Add interfaces for co-processor to grab GPIOs 2018-07-02 16:10:15 +02:00
consumer.h gpio: Avoid kernel.h inclusion where it's possible 2020-02-10 12:58:36 +01:00
driver.h gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT 2020-03-25 09:50:45 +01:00
gpio-reg.h gpio: Add comments on #if/#else/#endif 2019-06-27 15:56:50 +01:00
machine.h gpio: Add comments on #if/#else/#endif 2019-06-27 15:56:50 +01:00