Searched hist:d19d2de61fb131abcd29f7c61d3f168f687bfd6e (Results 1 – 2 of 2) sorted by relevance
| /linux/drivers/gpio/ |
| H A D | gpio-mmio.c | diff d19d2de61fb131abcd29f7c61d3f168f687bfd6e Sun Mar 15 13:13:37 CET 2020 Chuanhong Guo <gch981213@gmail.com> 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>
|
| /linux/include/linux/gpio/ |
| H A D | driver.h | diff d19d2de61fb131abcd29f7c61d3f168f687bfd6e Sun Mar 15 13:13:37 CET 2020 Chuanhong Guo <gch981213@gmail.com> 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>
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