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 void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
  23 void pinconf_show_setting(struct seq_file *s,
  24                           struct pinctrl_setting const *setting);
  25 void pinconf_init_device_debugfs(struct dentry *devroot,
  26                                  struct pinctrl_dev *pctldev);
  27
  28 /*
  29  * You will only be interested in these if you're using PINCONF
  30  * so don't supply any stubs for these.
  31  */
  32 int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  33                            unsigned long *config);
  34 int pin_config_group_get(const char *dev_name, const char *pin_group,
  35                          unsigned long *config);
  36
  37 #else
  38
  39 static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  40 {
  41         return 0;
  42 }
  43
  44 static inline int pinconf_validate_map(struct pinctrl_map const *map, int i)
  45 {
  46         return 0;
  47 }
  48
  49 static inline int pinconf_map_to_setting(struct pinctrl_map const *map,
  50                           struct pinctrl_setting *setting)
  51 {
  52         return 0;
  53 }
  54
  55 static inline void pinconf_free_setting(struct pinctrl_setting const *setting)
  56 {
  57 }
  58
  59 static inline int pinconf_apply_setting(struct pinctrl_setting const *setting)
  60 {
  61         return 0;
  62 }
  63
  64 static inline void pinconf_show_map(struct seq_file *s,
  65                                     struct pinctrl_map const *map)
  66 {
  67 }
  68
  69 static inline void pinconf_show_setting(struct seq_file *s,
  70                           struct pinctrl_setting const *setting)
  71 {
  72 }
  73
  74 static inline void pinconf_init_device_debugfs(struct dentry *devroot,
  75                                                struct pinctrl_dev *pctldev)
  76 {
  77 }
  78
  79 #endif
  80
  81 /*
  82  * The following functions are available if the driver uses the generic
  83  * pin config.
  84  */
  85
  86 #ifdef CONFIG_GENERIC_PINCONF
  87
  88 void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
  89                               struct seq_file *s, unsigned pin);
  90
  91 void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
  92                               struct seq_file *s, const char *gname);
  93
  94 #else
  95
  96 static inline void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
  97                                             struct seq_file *s,
  98                                             unsigned pin)
  99 {
 100         return;
 101 }
 102
 103 static inline void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
 104                                               struct seq_file *s,
 105                                               const char *gname)
 106 {
 107         return;
 108 }
 109
 110 #endif