drivers/pinctrl/pinconf.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Internal interface between the core pin control system and the
   4  * pin config 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
  13 #include <linux/errno.h>
  14
  15 struct dentry;
  16 struct device_node;
  17 struct seq_file;
  18
  19 struct pinctrl_dev;
  20 struct pinctrl_map;
  21 struct pinctrl_setting;
  22
  23 #ifdef CONFIG_PINCONF
  24
  25 int pinconf_check_ops(struct pinctrl_dev *pctldev);
  26 int pinconf_validate_map(const struct pinctrl_map *map, int i);
  27 int pinconf_map_to_setting(const struct pinctrl_map *map,
  28                           struct pinctrl_setting *setting);
  29 void pinconf_free_setting(const struct pinctrl_setting *setting);
  30 int pinconf_apply_setting(const struct pinctrl_setting *setting);
  31
  32 int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
  33                        unsigned long *configs, size_t nconfigs);
  34
  35 /*
  36  * You will only be interested in these if you're using PINCONF
  37  * so don't supply any stubs for these.
  38  */
  39 int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  40                            unsigned long *config);
  41 int pin_config_group_get(const char *dev_name, const char *pin_group,
  42                          unsigned long *config);
  43
  44 #else
  45
  46 static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  47 {
  48         return 0;
  49 }
  50
  51 static inline int pinconf_validate_map(const struct pinctrl_map *map, int i)
  52 {
  53         return 0;
  54 }
  55
  56 static inline int pinconf_map_to_setting(const struct pinctrl_map *map,
  57                           struct pinctrl_setting *setting)
  58 {
  59         return 0;
  60 }
  61
  62 static inline void pinconf_free_setting(const struct pinctrl_setting *setting)
  63 {
  64 }
  65
  66 static inline int pinconf_apply_setting(const struct pinctrl_setting *setting)
  67 {
  68         return 0;
  69 }
  70
  71 static inline int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
  72                                      unsigned long *configs, size_t nconfigs)
  73 {
  74         return -ENOTSUPP;
  75 }
  76
  77 #endif
  78
  79 #if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS)
  80
  81 void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map);
  82 void pinconf_show_setting(struct seq_file *s,
  83                           const struct pinctrl_setting *setting);
  84 void pinconf_init_device_debugfs(struct dentry *devroot,
  85                                  struct pinctrl_dev *pctldev);
  86
  87 #else
  88
  89 static inline void pinconf_show_map(struct seq_file *s,
  90                                     const struct pinctrl_map *map)
  91 {
  92 }
  93
  94 static inline void pinconf_show_setting(struct seq_file *s,
  95                                         const struct pinctrl_setting *setting)
  96 {
  97 }
  98
  99 static inline void pinconf_init_device_debugfs(struct dentry *devroot,
 100                                                struct pinctrl_dev *pctldev)
 101 {
 102 }
 103
 104 #endif
 105
 106 /*
 107  * The following functions are available if the driver uses the generic
 108  * pin config.
 109  */
 110
 111 #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)
 112
 113 void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
 114                                struct seq_file *s, const char *gname,
 115                                unsigned pin);
 116
 117 void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
 118                                  struct seq_file *s, unsigned long config);
 119 #else
 120
 121 static inline void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
 122                                              struct seq_file *s,
 123                                              const char *gname, unsigned pin)
 124 {
 125         return;
 126 }
 127
 128 static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
 129                                                struct seq_file *s,
 130                                                unsigned long config)
 131 {
 132         return;
 133 }
 134 #endif
 135
 136 #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF)
 137 int pinconf_generic_parse_dt_config(struct device_node *np,
 138                                     struct pinctrl_dev *pctldev,
 139                                     unsigned long **configs,
 140                                     unsigned int *nconfigs);
 141 #endif