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 int 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  */
  30 int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  31                            unsigned long *config);
  32 int pin_config_group_get(const char *dev_name, const char *pin_group,
  33                          unsigned long *config);
  34
  35 #else
  36
  37 static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  38 {
  39         return 0;
  40 }
  41
  42 static inline int pinconf_validate_map(struct pinctrl_map const *map, int i)
  43 {
  44         return 0;
  45 }
  46
  47 static inline int pinconf_map_to_setting(struct pinctrl_map const *map,
  48                           struct pinctrl_setting *setting)
  49 {
  50         return 0;
  51 }
  52
  53 static inline void pinconf_free_setting(struct pinctrl_setting const *setting)
  54 {
  55 }
  56
  57 static inline int pinconf_apply_setting(struct pinctrl_setting const *setting)
  58 {
  59         return 0;
  60 }
  61
  62 static 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
  72 void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
  73 void pinconf_show_setting(struct seq_file *s,
  74                           struct pinctrl_setting const *setting);
  75 void pinconf_init_device_debugfs(struct dentry *devroot,
  76                                  struct pinctrl_dev *pctldev);
  77
  78 #else
  79
  80 static inline void pinconf_show_map(struct seq_file *s,
  81                                     struct pinctrl_map const *map)
  82 {
  83 }
  84
  85 static inline void pinconf_show_setting(struct seq_file *s,
  86                           struct pinctrl_setting const *setting)
  87 {
  88 }
  89
  90 static 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
 104 void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
 105                                struct seq_file *s, const char *gname,
 106                                unsigned pin);
 107
 108 void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
 109                                  struct seq_file *s, unsigned long config);
 110 #else
 111
 112 static 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
 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                                     struct pinctrl_dev *pctldev,
 130                                     unsigned long **configs,
 131                                     unsigned int *nconfigs);
 132 #endif