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| author | Patrice Chotard <patrice.chotard@st.com> | 2018-10-24 14:10:13 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-16 16:51:55 -0500 |
| commit | f55a0c0a20cad56440ebe9a9b2999f21ae00f61a (patch) | |
| tree | e5553e7659fb952f9ffabc140b007e215b58ab8e /include/dm/pinctrl.h | |
| parent | f9c87adc47a84fbe44f580ffa5fd2540ce7793b2 (diff) | |
| download | u-boot-f55a0c0a20cad56440ebe9a9b2999f21ae00f61a.tar.gz u-boot-f55a0c0a20cad56440ebe9a9b2999f21ae00f61a.tar.bz2 u-boot-f55a0c0a20cad56440ebe9a9b2999f21ae00f61a.zip | |
dm: pinctrl: Add get_pin_muxing() ops
Add get_pin_muxing() which allows to display the muxing
of a given pin belonging to a pin-controller.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm/pinctrl.h')
| -rw-r--r-- | include/dm/pinctrl.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/dm/pinctrl.h b/include/dm/pinctrl.h index 80de3f3fed..e88438d6a5 100644 --- a/include/dm/pinctrl.h +++ b/include/dm/pinctrl.h @@ -66,6 +66,7 @@ struct pinconf_param { * pointing a config node. (necessary for pinctrl_full) * @set_state_simple: do needed pinctrl operations for a peripherl @periph. * (necessary for pinctrl_simple) + * @get_pin_muxing: display the muxing of a given pin. */ struct pinctrl_ops { int (*get_pins_count)(struct udevice *dev); @@ -129,6 +130,24 @@ struct pinctrl_ops { * @return mux value (SoC-specific, e.g. 0 for input, 1 for output) */ int (*get_gpio_mux)(struct udevice *dev, int banknum, int index); + + /** + * get_pin_muxing() - show pin muxing + * + * This allows to display the muxing of a given pin. It's useful for + * debug purpose to know if a pin is configured as GPIO or as an + * alternate function and which one. + * Typically it is used by a PINCTRL driver with knowledge of the SoC + * pinctrl setup. + * + * @dev: Pinctrl device to use + * @selector: Pin selector + * @buf Pin's muxing description + * @size Pin's muxing description length + * return 0 if OK, -ve on error + */ + int (*get_pin_muxing)(struct udevice *dev, unsigned int selector, + char *buf, int size); }; #define pinctrl_get_ops(dev) ((struct pinctrl_ops *)(dev)->driver->ops) @@ -348,4 +367,19 @@ int pinctrl_decode_pin_config(const void *blob, int node); */ int pinctrl_get_gpio_mux(struct udevice *dev, int banknum, int index); +/** + * pinctrl_get_pin_muxing() - Returns the muxing description + * + * This allows to display the muxing description of the given pin for + * debug purpose + * + * @dev: Pinctrl device to use + * @selector Pin index within pin-controller + * @buf Pin's muxing description + * @size Pin's muxing description length + * @return 0 if OK, -ve on error + */ +int pinctrl_get_pin_muxing(struct udevice *dev, int selector, char *buf, + int size); + #endif /* __PINCTRL_H */ |