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d1d564ec49
Refactor line hogging code by moving the parts duplicated in gpiolib-acpi-core.c and gpiolib-of.c into gpiolib.c, leaving just the OF-specific bits in the latter. This makes fwnode the primary API for setting up hogs and allows to use software nodes in addition to ACPI and OF nodes. Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Linus Walleij <linusw@kernel.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260309-gpio-hog-fwnode-v2-2-4e61f3dbf06a@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef GPIOLIB_OF_H
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#define GPIOLIB_OF_H
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#include <linux/err.h>
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#include <linux/types.h>
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#include <linux/notifier.h>
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struct device_node;
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struct fwnode_handle;
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struct fwnode_reference_args;
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struct gpio_chip;
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struct gpio_desc;
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struct gpio_device;
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#ifdef CONFIG_OF_GPIO
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struct gpio_desc *of_find_gpio(struct device_node *np,
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const char *con_id,
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unsigned int idx,
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unsigned long *lookupflags);
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int of_gpiochip_add(struct gpio_chip *gc);
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void of_gpiochip_remove(struct gpio_chip *gc);
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bool of_gpiochip_instance_match(struct gpio_chip *gc, unsigned int index);
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int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id);
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int of_gpiochip_get_lflags(struct gpio_chip *chip,
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struct fwnode_reference_args *gpiospec,
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unsigned long *lflags);
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#else
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static inline struct gpio_desc *of_find_gpio(struct device_node *np,
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const char *con_id,
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unsigned int idx,
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unsigned long *lookupflags)
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{
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return ERR_PTR(-ENOENT);
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}
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static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
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static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
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static inline bool of_gpiochip_instance_match(struct gpio_chip *gc,
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unsigned int index)
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{
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return false;
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}
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static inline int of_gpio_count(const struct fwnode_handle *fwnode,
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const char *con_id)
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{
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return 0;
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}
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static inline int of_gpiochip_get_lflags(struct gpio_chip *chip,
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struct fwnode_reference_args *gpiospec,
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unsigned long *lflags)
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{
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return -ENOENT;
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}
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#endif /* CONFIG_OF_GPIO */
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extern struct notifier_block gpio_of_notifier;
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#endif /* GPIOLIB_OF_H */
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