drivers/pinctrl/pinmux.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Internal interface between the core pin control system and the
   4  * pinmux portions
   5  *
   6  * Copyright (C) 2011 ST-Ericsson SA
   7  * Written on behalf of Linaro for ST-Ericsson
   8  * Based on bits of regulator core, gpio core and clk core
   9  *
  10  * Author: Linus Walleij <linus.walleij@linaro.org>
  11  */
  12 #ifdef CONFIG_PINMUX
  13
  14 int pinmux_check_ops(struct pinctrl_dev *pctldev);
  15
  16 int pinmux_validate_map(const struct pinctrl_map *map, int i);
  17
  18 bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned pin);
  19
  20 int pinmux_request_gpio(struct pinctrl_dev *pctldev,
  21                         struct pinctrl_gpio_range *range,
  22                         unsigned pin, unsigned gpio);
  23 void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned pin,
  24                       struct pinctrl_gpio_range *range);
  25 int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
  26                           struct pinctrl_gpio_range *range,
  27                           unsigned pin, bool input);
  28
  29 int pinmux_map_to_setting(const struct pinctrl_map *map,
  30                           struct pinctrl_setting *setting);
  31 void pinmux_free_setting(const struct pinctrl_setting *setting);
  32 int pinmux_enable_setting(const struct pinctrl_setting *setting);
  33 void pinmux_disable_setting(const struct pinctrl_setting *setting);
  34
  35 #else
  36
  37 static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
  38 {
  39         return 0;
  40 }
  41
  42 static inline int pinmux_validate_map(const struct pinctrl_map *map, int i)
  43 {
  44         return 0;
  45 }
  46
  47 static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev,
  48                                                unsigned pin)
  49 {
  50         return true;
  51 }
  52
  53 static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev,
  54                         struct pinctrl_gpio_range *range,
  55                         unsigned pin, unsigned gpio)
  56 {
  57         return 0;
  58 }
  59
  60 static inline void pinmux_free_gpio(struct pinctrl_dev *pctldev,
  61                                     unsigned pin,
  62                                     struct pinctrl_gpio_range *range)
  63 {
  64 }
  65
  66 static inline int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
  67                                         struct pinctrl_gpio_range *range,
  68                                         unsigned pin, bool input)
  69 {
  70         return 0;
  71 }
  72
  73 static inline int pinmux_map_to_setting(const struct pinctrl_map *map,
  74                           struct pinctrl_setting *setting)
  75 {
  76         return 0;
  77 }
  78
  79 static inline void pinmux_free_setting(const struct pinctrl_setting *setting)
  80 {
  81 }
  82
  83 static inline int pinmux_enable_setting(const struct pinctrl_setting *setting)
  84 {
  85         return 0;
  86 }
  87
  88 static inline void pinmux_disable_setting(const struct pinctrl_setting *setting)
  89 {
  90 }
  91
  92 #endif
  93
  94 #if defined(CONFIG_PINMUX) && defined(CONFIG_DEBUG_FS)
  95
  96 void pinmux_show_map(struct seq_file *s, const struct pinctrl_map *map);
  97 void pinmux_show_setting(struct seq_file *s,
  98                          const struct pinctrl_setting *setting);
  99 void pinmux_init_device_debugfs(struct dentry *devroot,
 100                                 struct pinctrl_dev *pctldev);
 101
 102 #else
 103
 104 static inline void pinmux_show_map(struct seq_file *s,
 105                                    const struct pinctrl_map *map)
 106 {
 107 }
 108
 109 static inline void pinmux_show_setting(struct seq_file *s,
 110                                        const struct pinctrl_setting *setting)
 111 {
 112 }
 113
 114 static inline void pinmux_init_device_debugfs(struct dentry *devroot,
 115                                               struct pinctrl_dev *pctldev)
 116 {
 117 }
 118
 119 #endif
 120
 121 #ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS
 122
 123 /**
 124  * struct function_desc - generic function descriptor
 125  * @name: name of the function
 126  * @group_names: array of pin group names
 127  * @num_group_names: number of pin group names
 128  * @data: pin controller driver specific data
 129  */
 130 struct function_desc {
 131         const char *name;
 132         const char **group_names;
 133         int num_group_names;
 134         void *data;
 135 };
 136
 137 int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev);
 138
 139 const char *
 140 pinmux_generic_get_function_name(struct pinctrl_dev *pctldev,
 141                                  unsigned int selector);
 142
 143 int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev,
 144                                        unsigned int selector,
 145                                        const char * const **groups,
 146                                        unsigned * const num_groups);
 147
 148 struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev,
 149                                                   unsigned int selector);
 150
 151 int pinmux_generic_add_function(struct pinctrl_dev *pctldev,
 152                                 const char *name,
 153                                 const char **groups,
 154                                 unsigned const num_groups,
 155                                 void *data);
 156
 157 int pinmux_generic_remove_function(struct pinctrl_dev *pctldev,
 158                                    unsigned int selector);
 159
 160 void pinmux_generic_free_functions(struct pinctrl_dev *pctldev);
 161
 162 #else
 163
 164 static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev)
 165 {
 166 }
 167
 168 #endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */