1 /* 2 * Interface the pinconfig portions of the pinctrl subsystem 3 * 4 * Copyright (C) 2011 ST-Ericsson SA 5 * Written on behalf of Linaro for ST-Ericsson 6 * This interface is used in the core to keep track of pins. 7 * 8 * Author: Linus Walleij <linus.walleij@linaro.org> 9 * 10 * License terms: GNU General Public License (GPL) version 2 11 */ 12 #ifndef __LINUX_PINCTRL_PINCONF_H 13 #define __LINUX_PINCTRL_PINCONF_H 14 15 #ifdef CONFIG_PINCONF 16 17 #include <linux/pinctrl/machine.h> 18 19 struct pinctrl_dev; 20 struct seq_file; 21 22 /** 23 * struct pinconf_ops - pin config operations, to be implemented by 24 * pin configuration capable drivers. 25 * @is_generic: for pin controllers that want to use the generic interface, 26 * this flag tells the framework that it's generic. 27 * @pin_config_get: get the config of a certain pin, if the requested config 28 * is not available on this controller this should return -ENOTSUPP 29 * and if it is available but disabled it should return -EINVAL 30 * @pin_config_set: configure an individual pin 31 * @pin_config_group_get: get configurations for an entire pin group 32 * @pin_config_group_set: configure all pins in a group 33 * @pin_config_dbg_parse_modify: optional debugfs to modify a pin configuration 34 * @pin_config_dbg_show: optional debugfs display hook that will provide 35 * per-device info for a certain pin in debugfs 36 * @pin_config_group_dbg_show: optional debugfs display hook that will provide 37 * per-device info for a certain group in debugfs 38 * @pin_config_config_dbg_show: optional debugfs display hook that will decode 39 * and display a driver's pin configuration parameter 40 */ 41 struct pinconf_ops { 42 #ifdef CONFIG_GENERIC_PINCONF 43 bool is_generic; 44 #endif 45 int (*pin_config_get) (struct pinctrl_dev *pctldev, 46 unsigned pin, 47 unsigned long *config); 48 int (*pin_config_set) (struct pinctrl_dev *pctldev, 49 unsigned pin, 50 unsigned long *configs, 51 unsigned num_configs); 52 int (*pin_config_group_get) (struct pinctrl_dev *pctldev, 53 unsigned selector, 54 unsigned long *config); 55 int (*pin_config_group_set) (struct pinctrl_dev *pctldev, 56 unsigned selector, 57 unsigned long *configs, 58 unsigned num_configs); 59 int (*pin_config_dbg_parse_modify) (struct pinctrl_dev *pctldev, 60 const char *arg, 61 unsigned long *config); 62 void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, 63 struct seq_file *s, 64 unsigned offset); 65 void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev, 66 struct seq_file *s, 67 unsigned selector); 68 void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev, 69 struct seq_file *s, 70 unsigned long config); 71 }; 72 73 #endif 74 75 #endif /* __LINUX_PINCTRL_PINCONF_H */ 76