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