Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
pinctrl: core: add devm_pinctrl_register_mappings()
Using devm_pinctrl_register_mappings(), the core can automatically
unregister pinctrl mappings.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/20250520-aaeon-up-board-pinctrl-support-v6-3-dcb3756be3c6@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
authored by
Thomas Richard
and committed by
Linus Walleij
2e9ba1d9
223657cf
+40
+29
drivers/pinctrl/core.c
+29
drivers/pinctrl/core.c
···
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}
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EXPORT_SYMBOL_GPL(pinctrl_unregister_mappings);
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static void devm_pinctrl_unregister_mappings(void *maps)
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{
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pinctrl_unregister_mappings(maps);
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}
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/**
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* devm_pinctrl_register_mappings() - Resource managed pinctrl_register_mappings()
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* @dev: device for which mappings are registered
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* @maps: the pincontrol mappings table to register. Note the pinctrl-core
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* keeps a reference to the passed in maps, so they should _not_ be
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* marked with __initdata.
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* @num_maps: the number of maps in the mapping table
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*
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* Returns: 0 on success, or negative errno on failure.
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*/
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int devm_pinctrl_register_mappings(struct device *dev,
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const struct pinctrl_map *maps,
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unsigned int num_maps)
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{
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int ret;
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ret = pinctrl_register_mappings(maps, num_maps);
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if (ret)
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return ret;
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return devm_add_action_or_reset(dev, devm_pinctrl_unregister_mappings, (void *)maps);
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}
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EXPORT_SYMBOL_GPL(devm_pinctrl_register_mappings);
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/**
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* pinctrl_force_sleep() - turn a given controller device into sleep state
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* @pctldev: pin controller device
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include/linux/pinctrl/machine.h
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include/linux/pinctrl/machine.h
···
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#define PIN_MAP_CONFIGS_GROUP_HOG_DEFAULT(dev, grp, cfgs) \
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PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, cfgs)
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struct device;
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struct pinctrl_map;
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#ifdef CONFIG_PINCTRL
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int pinctrl_register_mappings(const struct pinctrl_map *map,
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unsigned int num_maps);
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int devm_pinctrl_register_mappings(struct device *dev,
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const struct pinctrl_map *map,
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unsigned int num_maps);
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void pinctrl_unregister_mappings(const struct pinctrl_map *map);
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void pinctrl_provide_dummies(void);
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#else
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static inline int pinctrl_register_mappings(const struct pinctrl_map *map,
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unsigned int num_maps)
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{
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return 0;
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}
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static inline int devm_pinctrl_register_mappings(struct device *dev,
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const struct pinctrl_map *map,
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unsigned int num_maps)
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{
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return 0;
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}