Quoting Chuanhong Guo <gch981213@xxxxxxxxx>:
Currently gpio-hog doesn't work on gpio-mt7621 driver. On further debugging, I noticed that set/clear register on this controller only works on output pins. We need to setup pin direction before writing values in bgpio_dir_out for a correct gpio-hog behavior. This patchset introduces a new flag BGPIOF_NO_SET_ON_INPUT for these kind of controller and set this flag for gpio-mt7621. Chuanhong Guo (2): gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag drivers/gpio/gpio-mmio.c | 23 +++++++++++++++++++---- drivers/gpio/gpio-mt7621.c | 4 ++-- include/linux/gpio/driver.h | 1 + 3 files changed, 22 insertions(+), 6 deletions(-) -- 2.24.1
Thanks Chuanhong for debugging the problem! With this patch gpio-hog works again. For the series: Tested-by: René van Dorst <opensource@xxxxxxxxxx> Greats, René
