linux/drivers/pinctrl/pinconf.h
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   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
  16int pinconf_check_ops(struct pinctrl_dev *pctldev);
  17int pinconf_validate_map(struct pinctrl_map const *map, int i);
  18int pinconf_map_to_setting(struct pinctrl_map const *map,
  19                          struct pinctrl_setting *setting);
  20void pinconf_free_setting(struct pinctrl_setting const *setting);
  21int 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 */
  27int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  28                           unsigned long *config);
  29int pin_config_group_get(const char *dev_name, const char *pin_group,
  30                         unsigned long *config);
  31
  32#else
  33
  34static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  35{
  36        return 0;
  37}
  38
  39static inline int pinconf_validate_map(struct pinctrl_map const *map, int i)
  40{
  41        return 0;
  42}
  43
  44static inline int pinconf_map_to_setting(struct pinctrl_map const *map,
  45                          struct pinctrl_setting *setting)
  46{
  47        return 0;
  48}
  49
  50static inline void pinconf_free_setting(struct pinctrl_setting const *setting)
  51{
  52}
  53
  54static 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
  63void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
  64void pinconf_show_setting(struct seq_file *s,
  65                          struct pinctrl_setting const *setting);
  66void pinconf_init_device_debugfs(struct dentry *devroot,
  67                                 struct pinctrl_dev *pctldev);
  68
  69#else
  70
  71static inline void pinconf_show_map(struct seq_file *s,
  72                                    struct pinctrl_map const *map)
  73{
  74}
  75
  76static inline void pinconf_show_setting(struct seq_file *s,
  77                          struct pinctrl_setting const *setting)
  78{
  79}
  80
  81static 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
  95void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
  96                              struct seq_file *s, unsigned pin);
  97
  98void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
  99                              struct seq_file *s, const char *gname);
 100
 101#else
 102
 103static inline void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
 104                                            struct seq_file *s,
 105                                            unsigned pin)
 106{
 107        return;
 108}
 109
 110static inline void pinconf_generic_dump_group(struct pinctrl_dev *pctldev,
 111                                              struct seq_file *s,
 112                                              const char *gname)
 113{
 114        return;
 115}
 116
 117#endif
 118
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