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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * ACPI helpers for GPIO API
4 *
5 * Copyright (C) 2012,2019 Intel Corporation
6 */
7
8#ifndef GPIOLIB_ACPI_H
9#define GPIOLIB_ACPI_H
10
11struct acpi_device;
12
13/**
14 * struct acpi_gpio_info - ACPI GPIO specific information
15 * @adev: reference to ACPI device which consumes GPIO resource
16 * @flags: GPIO initialization flags
17 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
18 * @pin_config: pin bias as provided by ACPI
19 * @polarity: interrupt polarity as provided by ACPI
20 * @triggering: triggering type as provided by ACPI
21 * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
22 */
23struct acpi_gpio_info {
24 struct acpi_device *adev;
25 enum gpiod_flags flags;
26 bool gpioint;
27 int pin_config;
28 int polarity;
29 int triggering;
30 unsigned int quirks;
31};
32
33#ifdef CONFIG_ACPI
34void acpi_gpiochip_add(struct gpio_chip *chip);
35void acpi_gpiochip_remove(struct gpio_chip *chip);
36
37void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
38void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
39
40int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
41 struct acpi_gpio_info *info);
42int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
43 struct acpi_gpio_info *info);
44
45struct gpio_desc *acpi_find_gpio(struct device *dev,
46 const char *con_id,
47 unsigned int idx,
48 enum gpiod_flags *dflags,
49 unsigned long *lookupflags);
50struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
51 const char *propname, int index,
52 struct acpi_gpio_info *info);
53
54int acpi_gpio_count(struct device *dev, const char *con_id);
55#else
56static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
57static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
58
59static inline void
60acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
61
62static inline void
63acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
64
65static inline int
66acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
67{
68 return 0;
69}
70static inline int
71acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
72 struct acpi_gpio_info *info)
73{
74 return 0;
75}
76
77static inline struct gpio_desc *
78acpi_find_gpio(struct device *dev, const char *con_id,
79 unsigned int idx, enum gpiod_flags *dflags,
80 unsigned long *lookupflags)
81{
82 return ERR_PTR(-ENOENT);
83}
84static inline struct gpio_desc *
85acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
86 int index, struct acpi_gpio_info *info)
87{
88 return ERR_PTR(-ENXIO);
89}
90static inline int acpi_gpio_count(struct device *dev, const char *con_id)
91{
92 return -ENODEV;
93}
94#endif
95
96#endif /* GPIOLIB_ACPI_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * ACPI helpers for GPIO API
4 *
5 * Copyright (C) 2012,2019 Intel Corporation
6 */
7
8#ifndef GPIOLIB_ACPI_H
9#define GPIOLIB_ACPI_H
10
11struct acpi_device;
12
13/**
14 * struct acpi_gpio_info - ACPI GPIO specific information
15 * @adev: reference to ACPI device which consumes GPIO resource
16 * @flags: GPIO initialization flags
17 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
18 * @pin_config: pin bias as provided by ACPI
19 * @polarity: interrupt polarity as provided by ACPI
20 * @triggering: triggering type as provided by ACPI
21 * @debounce: debounce timeout as provided by ACPI
22 * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
23 */
24struct acpi_gpio_info {
25 struct acpi_device *adev;
26 enum gpiod_flags flags;
27 bool gpioint;
28 int pin_config;
29 int polarity;
30 int triggering;
31 unsigned int debounce;
32 unsigned int quirks;
33};
34
35#ifdef CONFIG_ACPI
36void acpi_gpiochip_add(struct gpio_chip *chip);
37void acpi_gpiochip_remove(struct gpio_chip *chip);
38
39void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev);
40
41void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
42void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
43
44int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
45 struct acpi_gpio_info *info);
46int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
47 struct acpi_gpio_info *info);
48
49struct gpio_desc *acpi_find_gpio(struct device *dev,
50 const char *con_id,
51 unsigned int idx,
52 enum gpiod_flags *dflags,
53 unsigned long *lookupflags);
54struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
55 const char *propname, int index,
56 struct acpi_gpio_info *info);
57
58int acpi_gpio_count(struct device *dev, const char *con_id);
59#else
60static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
61static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
62
63static inline void acpi_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev) { }
64
65static inline void
66acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
67
68static inline void
69acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
70
71static inline int
72acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
73{
74 return 0;
75}
76static inline int
77acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
78 struct acpi_gpio_info *info)
79{
80 return 0;
81}
82
83static inline struct gpio_desc *
84acpi_find_gpio(struct device *dev, const char *con_id,
85 unsigned int idx, enum gpiod_flags *dflags,
86 unsigned long *lookupflags)
87{
88 return ERR_PTR(-ENOENT);
89}
90static inline struct gpio_desc *
91acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
92 int index, struct acpi_gpio_info *info)
93{
94 return ERR_PTR(-ENXIO);
95}
96static inline int acpi_gpio_count(struct device *dev, const char *con_id)
97{
98 return -ENODEV;
99}
100#endif
101
102#endif /* GPIOLIB_ACPI_H */