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kernel/linux-rt-4.4.41/drivers/pinctrl/pinconf.h 3.08 KB
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  /*
   * Internal interface between the core pin control system and the
   * pin config portions
   *
   * Copyright (C) 2011 ST-Ericsson SA
   * Written on behalf of Linaro for ST-Ericsson
   * Based on bits of regulator core, gpio core and clk core
   *
   * Author: Linus Walleij <linus.walleij@linaro.org>
   *
   * License terms: GNU General Public License (GPL) version 2
   */
  
  #ifdef CONFIG_PINCONF
  
  int pinconf_check_ops(struct pinctrl_dev *pctldev);
  int pinconf_validate_map(struct pinctrl_map const *map, int i);
  int pinconf_map_to_setting(struct pinctrl_map const *map,
  			  struct pinctrl_setting *setting);
  void pinconf_free_setting(struct pinctrl_setting const *setting);
  int pinconf_apply_setting(struct pinctrl_setting const *setting);
  
  /*
   * You will only be interested in these if you're using PINCONF
   * so don't supply any stubs for these.
   */
  int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
  			   unsigned long *config);
  int pin_config_group_get(const char *dev_name, const char *pin_group,
  			 unsigned long *config);
  
  #else
  
  static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
  {
  	return 0;
  }
  
  static inline int pinconf_validate_map(struct pinctrl_map const *map, int i)
  {
  	return 0;
  }
  
  static inline int pinconf_map_to_setting(struct pinctrl_map const *map,
  			  struct pinctrl_setting *setting)
  {
  	return 0;
  }
  
  static inline void pinconf_free_setting(struct pinctrl_setting const *setting)
  {
  }
  
  static inline int pinconf_apply_setting(struct pinctrl_setting const *setting)
  {
  	return 0;
  }
  
  #endif
  
  #if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS)
  
  void pinconf_show_map(struct seq_file *s, struct pinctrl_map const *map);
  void pinconf_show_setting(struct seq_file *s,
  			  struct pinctrl_setting const *setting);
  void pinconf_init_device_debugfs(struct dentry *devroot,
  				 struct pinctrl_dev *pctldev);
  
  #else
  
  static inline void pinconf_show_map(struct seq_file *s,
  				    struct pinctrl_map const *map)
  {
  }
  
  static inline void pinconf_show_setting(struct seq_file *s,
  			  struct pinctrl_setting const *setting)
  {
  }
  
  static inline void pinconf_init_device_debugfs(struct dentry *devroot,
  					       struct pinctrl_dev *pctldev)
  {
  }
  
  #endif
  
  /*
   * The following functions are available if the driver uses the generic
   * pin config.
   */
  
  #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)
  
  void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
  			       struct seq_file *s, const char *gname,
  			       unsigned pin);
  
  void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
  				 struct seq_file *s, unsigned long config);
  #else
  
  static inline void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
  					     struct seq_file *s,
  					     const char *gname, unsigned pin)
  {
  	return;
  }
  
  static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
  					       struct seq_file *s,
  					       unsigned long config)
  {
  	return;
  }
  #endif
  
  #if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF)
  int pinconf_generic_parse_dt_config(struct device_node *np,
  				    struct pinctrl_dev *pctldev,
  				    unsigned long **configs,
  				    unsigned int *nconfigs);
  #endif