On Mon, 13 Jan 2020 at 03:35, Patrick Delaunay <patrick.delau...@st.com> wrote: > > This commit manages the new dir flags that can be used in gpio > specifiers to indicate the pull-up or pull-down resistor > configuration for output gpio (GPIO_PULL_UP, GPIO_PULL_DOWN) > or the Open Drain/Open Source configuration for input gpio > (GPIO_OPEN_DRAIN, GPIO_OPEN_SOURCE). > > These flags are already supported in Linux kernel in gpio lib. > > This patch only parse and save the direction flags in GPIO > descriptor (desc->flags), it prepares the introduction of new ops > to manage them. > The GPIO uclass supports new GPIO flags from device-tree > (GPIO_XXX define in include/dt-bindings/gpio/gpio.h) > and translate them in the dir flags (GPIOD_XXX): > - GPIO_PULL_UP => GPIOD_PULL_UP > - GPIO_PULL_DOWN => GPIOD_PULL_DOWN > - GPIO_OPEN_DRAIN => GPIOD_OPEN_DRAIN > - GPIO_OPEN_SOURCE => GPIOD_OPEN_SOURCE > > This patch also adds protection in the check_dir_flags function for > new invalid configuration of the dir flags. > > Signed-off-by: Patrick Delaunay <patrick.delau...@st.com> > --- > > This patch was part of v2 08/14 > = gpio: add ops for configuration with dir flags > > > Changes in v3: > - Split the previous patch [PATCH v2 08/14] to help review > > Changes in v2: None > > drivers/gpio/gpio-uclass.c | 30 ++++++++++++++++++++++++++++++ > include/asm-generic/gpio.h | 6 +++++- > 2 files changed, 35 insertions(+), 1 deletion(-)
Reviewed-by: Simon Glass <s...@chromium.org>
