1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Internal interface between the core pin control system and the 4 * pin config portions 5 * 6 * Copyright (C) 2011 ST-Ericsson SA 7 * Written on behalf of Linaro for ST-Ericsson 8 * Based on bits of regulator core, gpio core and clk core 9 * 10 * Author: Linus Walleij <linus.walleij@linaro.org> 11 */ 12 13#include <linux/errno.h> 14 15struct dentry; 16struct device_node; 17struct seq_file; 18 19struct pinctrl_dev; 20struct pinctrl_map; 21struct pinctrl_setting; 22 23#ifdef CONFIG_PINCONF 24 25int pinconf_check_ops(struct pinctrl_dev *pctldev); 26int pinconf_validate_map(const struct pinctrl_map *map, int i); 27int pinconf_map_to_setting(const struct pinctrl_map *map, 28 struct pinctrl_setting *setting); 29void pinconf_free_setting(const struct pinctrl_setting *setting); 30int pinconf_apply_setting(const struct pinctrl_setting *setting); 31 32int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned int pin, 33 unsigned long *configs, size_t nconfigs); 34 35/* 36 * You will only be interested in these if you're using PINCONF 37 * so don't supply any stubs for these. 38 */ 39int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned int pin, 40 unsigned long *config); 41int pin_config_group_get(const char *dev_name, const char *pin_group, 42 unsigned long *config); 43 44#else 45 46static inline int pinconf_check_ops(struct pinctrl_dev *pctldev) 47{ 48 return 0; 49} 50 51static inline int pinconf_validate_map(const struct pinctrl_map *map, int i) 52{ 53 return 0; 54} 55 56static inline int pinconf_map_to_setting(const struct pinctrl_map *map, 57 struct pinctrl_setting *setting) 58{ 59 return 0; 60} 61 62static inline void pinconf_free_setting(const struct pinctrl_setting *setting) 63{ 64} 65 66static inline int pinconf_apply_setting(const struct pinctrl_setting *setting) 67{ 68 return 0; 69} 70 71static inline int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned int pin, 72 unsigned long *configs, size_t nconfigs) 73{ 74 return -ENOTSUPP; 75} 76 77#endif 78 79#if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS) 80 81void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map); 82void pinconf_show_setting(struct seq_file *s, 83 const struct pinctrl_setting *setting); 84void pinconf_init_device_debugfs(struct dentry *devroot, 85 struct pinctrl_dev *pctldev); 86 87#else 88 89static inline void pinconf_show_map(struct seq_file *s, 90 const struct pinctrl_map *map) 91{ 92} 93 94static inline void pinconf_show_setting(struct seq_file *s, 95 const struct pinctrl_setting *setting) 96{ 97} 98 99static inline void pinconf_init_device_debugfs(struct dentry *devroot, 100 struct pinctrl_dev *pctldev) 101{ 102} 103 104#endif 105 106/* 107 * The following functions are available if the driver uses the generic 108 * pin config. 109 */ 110 111#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS) 112 113void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev, 114 struct seq_file *s, const char *gname, 115 unsigned int pin); 116 117void pinconf_generic_dump_config(struct pinctrl_dev *pctldev, 118 struct seq_file *s, unsigned long config); 119#else 120 121static inline void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev, 122 struct seq_file *s, 123 const char *gname, unsigned int pin) 124{ 125 return; 126} 127 128static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev, 129 struct seq_file *s, 130 unsigned long config) 131{ 132 return; 133} 134#endif 135 136#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF) 137int pinconf_generic_parse_dt_config(struct device_node *np, 138 struct pinctrl_dev *pctldev, 139 unsigned long **configs, 140 unsigned int *nconfigs); 141#endif 142