Eric Lee / smarc-fsl-linux-kernel

Blame view

drivers/gpio/gpiolib-acpi.h 2.65 KB
edit raw normal view history
77cb907ab   Andy Shevchenko   gpiolib: acpi: Sp... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
  /* SPDX-License-Identifier: GPL-2.0 */
  /*
   * ACPI helpers for GPIO API
   *
   * Copyright (C) 2012,2019 Intel Corporation
   */
  
  #ifndef GPIOLIB_ACPI_H
  #define GPIOLIB_ACPI_H
  
  struct acpi_device;
  
  /**
   * struct acpi_gpio_info - ACPI GPIO specific information
   * @adev: reference to ACPI device which consumes GPIO resource
   * @flags: GPIO initialization flags
   * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
   * @pin_config: pin bias as provided by ACPI
   * @polarity: interrupt polarity as provided by ACPI
   * @triggering: triggering type as provided by ACPI
   * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
   */
  struct acpi_gpio_info {
  	struct acpi_device *adev;
  	enum gpiod_flags flags;
  	bool gpioint;
  	int pin_config;
  	int polarity;
  	int triggering;
  	unsigned int quirks;
  };
  
  #ifdef CONFIG_ACPI
  void acpi_gpiochip_add(struct gpio_chip *chip);
  void acpi_gpiochip_remove(struct gpio_chip *chip);
  
  void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
  void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
  
  int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
  				 struct acpi_gpio_info *info);
  int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
  					struct acpi_gpio_info *info);
  
  struct gpio_desc *acpi_find_gpio(struct device *dev,
  				 const char *con_id,
  				 unsigned int idx,
  				 enum gpiod_flags *dflags,
  				 unsigned long *lookupflags);
  struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
  				      const char *propname, int index,
  				      struct acpi_gpio_info *info);
  
  int acpi_gpio_count(struct device *dev, const char *con_id);
77cb907ab   Andy Shevchenko   gpiolib: acpi: Sp... 
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
  #else
  static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
  static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
  
  static inline void
  acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
  
  static inline void
  acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
  
  static inline int
  acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
  {
  	return 0;
  }
  static inline int
  acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
  				    struct acpi_gpio_info *info)
  {
  	return 0;
  }
  
  static inline struct gpio_desc *
  acpi_find_gpio(struct device *dev, const char *con_id,
  	       unsigned int idx, enum gpiod_flags *dflags,
  	       unsigned long *lookupflags)
  {
  	return ERR_PTR(-ENOENT);
  }
  static inline struct gpio_desc *
  acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
  		    int index, struct acpi_gpio_info *info)
  {
  	return ERR_PTR(-ENXIO);
  }
  static inline int acpi_gpio_count(struct device *dev, const char *con_id)
  {
  	return -ENODEV;
  }
77cb907ab   Andy Shevchenko   gpiolib: acpi: Sp... 
94
95
96
 
  #endif
  
  #endif /* GPIOLIB_ACPI_H */