tree f23a6222c259271f9fa8ddaa5d9114a6a668df5a
parent 477ca57b9a53120a14bdca356612fce15211345d
author Patrick Delaunay <patrick.delaunay@st.com> 1578911708 +0100
committer Tom Rini <trini@konsulko.com> 1587092814 -0400

gpio: add ops to get dir flags

Add the ops for GPIO driver get_dir_flags(), allows to get dynamically
the current gpio configuration; it is used by the API function
dm_gpio_get_dir_flags().

When these optional ops are absent, the gpio uclass continues to use
the mandatory ops (direction_output, direction_input, get_value) and
value of desc->flags to manage only the main dir flags:
- GPIOD_IS_IN
- GPIOD_IS_OUT
- GPIOD_IS_OUT_ACTIVE
- GPIOD_ACTIVE_LOW

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>