diff options
| author | Patrick Delaunay <patrick.delaunay@st.com> | 2020-01-13 11:35:08 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-04-16 23:06:54 -0400 |
| commit | d2c07e56ab3ef0cec99335aa8dafbed691d23739 (patch) | |
| tree | f23a6222c259271f9fa8ddaa5d9114a6a668df5a /include/asm-generic | |
| parent | 477ca57b9a53120a14bdca356612fce15211345d (diff) | |
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>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/gpio.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 42c9ab29ca..7c1f71b1ac 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -297,6 +297,21 @@ struct dm_gpio_ops { */ int (*xlate)(struct udevice *dev, struct gpio_desc *desc, struct ofnode_phandle_args *args); + + /** + * get_dir_flags() - Get GPIO dir flags + * + * This function return the GPIO direction flags used. + * + * This method is optional. + * + * @dev: GPIO device + * @offset: GPIO offset within that device + * @flags: place to put the used direction flags by GPIO + * @return 0 if OK, -ve on error + */ + int (*get_dir_flags)(struct udevice *dev, unsigned int offset, + ulong *flags); }; /** |