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pinctrl: pinconf-generic: add generic APIs for mapping pinctrl node

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Add generic APIs to map the DT node and its sub node in pinconf generic
driver. These APIs can be used from driver to parse the DT node who
uses the pinconf generic APIs for defining their nodes.

Changes from V1:
- Add generic property for pins and functions in pinconf-generic.
- Add APIs to map the DT and subnode.
- Move common utils APIs to the pinctrl-utils from this file.
- Update the binding document accordingly.
Changes from V2:
- Rebased the pinctrl binding doc on top of Stephen's cleanup.
- Rename properties "pinctrl-pins" and "pinctrl-function" to
  "pins" and "function".

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Laxman Dewangan 2013-08-06 18:42:34 +05:30 • committed by Linus Walleij
parent 1eb207a9ec
commit e81c8f18af
2 changed files with 102 additions and 0 deletions
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6
include/linux/pinctrl/pinconf-generic.h
View file

@ -137,6 +137,12 @@ static inline unsigned long pinconf_to_config_packed(enum pin_config_param param
return PIN_CONF_PACKED(param, argument);
}
int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
struct device_node *np, struct pinctrl_map **map,
unsigned *reserved_maps, unsigned *num_maps);
int pinconf_generic_dt_node_to_map(struct pinctrl_dev *pctldev,
struct device_node *np_config, struct pinctrl_map **map,
unsigned *num_maps);
#endif /* CONFIG_GENERIC_PINCONF */
#endif /* __LINUX_PINCTRL_PINCONF_GENERIC_H */