Add a function which produces a flags word from a few common PIN_CONFIG settings. This is useful for simple pinctrl drivers that don't need to worry about drive strength, etc.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v9: None Changes in v2: None
drivers/pinctrl/pinctrl-uclass.c | 12 ++++++++++++ include/dm/pinctrl.h | 13 +++++++++++++ 2 files changed, 25 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c index c42b312..1acbfaf 100644 --- a/drivers/pinctrl/pinctrl-uclass.c +++ b/drivers/pinctrl/pinctrl-uclass.c @@ -15,6 +15,18 @@
DECLARE_GLOBAL_DATA_PTR;
+int pinctrl_decode_pin_config(const void *blob, int node) +{ + int flags = 0; + + if (fdtdec_get_bool(blob, node, "bias-pull-up")) + flags |= 1 << PIN_CONFIG_BIAS_PULL_UP; + else if (fdtdec_get_bool(blob, node, "bias-pull-down")) + flags |= 1 << PIN_CONFIG_BIAS_PULL_DOWN; + + return flags; +} + #if CONFIG_IS_ENABLED(PINCTRL_FULL) /** * pinctrl_config_one() - apply pinctrl settings for a single node diff --git a/include/dm/pinctrl.h b/include/dm/pinctrl.h index f6025f6..5cd4503 100644 --- a/include/dm/pinctrl.h +++ b/include/dm/pinctrl.h @@ -284,4 +284,17 @@ int pinctrl_request_noflags(struct udevice *dev, int func); */ int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph);
+/** + * pinctrl_decode_pin_config() - decode pin configuration flags + * + * This decodes some of the PIN_CONFIG values into flags, with each value + * being (1 << pin_cfg). This does not support things with values like the + * slew rate. + * + * @blob: Device tree blob + * @node: Node containing the PIN_CONFIG values + * @return decoded flag value, or -ve on error + */ +int pinctrl_decode_pin_config(const void *blob, int node); + #endif /* __PINCTRL_H */