drivers/pinctrl/pinconf.h

   1 /*
   2  * Internal interface between the core pin control system and the
   3  * pin config portions
   4  *
   5  * Copyright (C) 2011 ST-Ericsson SA
   6  * Written on behalf of Linaro for ST-Ericsson
   7  * Based on bits of regulator core, gpio core and clk core
   8  *
   9  * Author: Linus Walleij <linus.walleij@linaro.org>
  10  *
  11  * License terms: GNU General Public License (GPL) version 2
  12  */
  13
  14 #ifdef CONFIG_PINCONF
  15
  16 int pinconf_check_ops(struct pinctrl_dev *pctldev);
  17 int pinconf_validate_map(struct pinctrl_map const *map, int i);
  18 int pinconf_map_to_setting(struct pinctrl_map const *map,
  19                           struct pinctrl_setting *setting);
  20 void pinconf_free_setting(struct pinctrl_setting const *setting);
  21 int pinconf_apply_setting(struct pinctrl_setting const *setting);
  22
  23 /*
  24  * You will only be interested in these if you're using PINCONF
  25  * so don't supply any stubs for these.
  26  */
  27 int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  28                            unsigned long *config);
  29 int pin_config_group_get(const char *dev_name, const char *pin_group,
  30                          unsigned long *config);
  31
  32 #else
  33
  34 static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  35 {
  36         return 0;
  37 }
  38
  39 static inline int pinconf_validate_map(struct pinctrl_map const *map, int i)
  40 {
  41         return 0;
  42 }
  43
  44 static inline int pinconf_map_to_setting(struct pinctrl_map const *map,
  45                           struct pinctrl_setting *setting)
  46 {
  47         return 0;
  48 }
  49
  50 static inline void pinconf_free_setting(struct pinctrl_setting const *setting)
  51 {
  52 }
  53
  54 static inline int pinconf_apply_setting(struct pinctrl_setting const *setting)
  55 {
  56         return 0;
  57 }
  58
  59 #endif
  60
  61 #if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS)
  62
  63 void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
  64 void pinconf_show_setting(struct seq_file *s,
  65                           struct pinctrl_setting const *setting);
  66 void pinconf_init_device_debugfs(struct dentry *devroot,
  67                                  struct pinctrl_dev *pctldev);
  68
  69 #else
  70
  71 static inline void pinconf_show_map(struct seq_file *s,
  72                                     struct pinctrl_map const *map)
  73 {
  74 }
  75
  76 static inline void pinconf_show_setting(struct seq_file *s,
  77                           struct pinctrl_setting const *setting)
  78 {
  79 }
  80
  81 static inline void pinconf_init_device_debugfs(struct dentry *devroot,
  82                                                struct pinctrl_dev *pctldev)
  83 {
  84 }
  85
  86 #endif
  87
  88 /*
  89  * The following functions are available if the driver uses the generic
  90  * pin config.
  91  */
  92
  93 #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)
  94
  95 void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
  96                               struct seq_file *s, unsigned pin);
  97
  98 void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
  99                               struct seq_file *s, const char *gname);
 100
 101 void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
 102                                  struct seq_file *s, unsigned long config);
 103 #else
 104
 105 static inline void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
 106                                             struct seq_file *s,
 107                                             unsigned pin)
 108 {
 109         return;
 110 }
 111
 112 static inline void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
 113                                               struct seq_file *s,
 114                                               const char *gname)
 115 {
 116         return;
 117 }
 118
 119 static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
 120                                                struct seq_file *s,
 121                                                unsigned long config)
 122 {
 123         return;
 124 }
 125 #endif
 126
 127 #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF)
 128 int pinconf_generic_parse_dt_config(struct device_node *np,
 129                                     unsigned long **configs,
 130                                     unsigned int *nconfigs);
 131 #endif