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 <[email protected]> 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 struct pinctrl_dev; 18 struct seq_file; 19 20 /** 21 * struct pinconf_ops - pin config operations, to be implemented by 22 * pin configuration capable drivers. 23 * @is_generic: for pin controllers that want to use the generic interface, 24 * this flag tells the framework that it's generic. 25 * @pin_config_get: get the config of a certain pin, if the requested config 26 * is not available on this controller this should return -ENOTSUPP 27 * and if it is available but disabled it should return -EINVAL 28 * @pin_config_set: configure an individual pin 29 * @pin_config_group_get: get configurations for an entire pin group; should 30 * return -ENOTSUPP and -EINVAL using the same rules as pin_config_get. 31 * @pin_config_group_set: configure all pins in a group 32 * @pin_config_dbg_show: optional debugfs display hook that will provide 33 * per-device info for a certain pin in debugfs 34 * @pin_config_group_dbg_show: optional debugfs display hook that will provide 35 * per-device info for a certain group in debugfs 36 * @pin_config_config_dbg_show: optional debugfs display hook that will decode 37 * and display a driver's pin configuration parameter 38 */ 39 struct pinconf_ops { 40 #ifdef CONFIG_GENERIC_PINCONF 41 bool is_generic; 42 #endif 43 int (*pin_config_get) (struct pinctrl_dev *pctldev, 44 unsigned pin, 45 unsigned long *config); 46 int (*pin_config_set) (struct pinctrl_dev *pctldev, 47 unsigned pin, 48 unsigned long *configs, 49 unsigned num_configs); 50 int (*pin_config_group_get) (struct pinctrl_dev *pctldev, 51 unsigned selector, 52 unsigned long *config); 53 int (*pin_config_group_set) (struct pinctrl_dev *pctldev, 54 unsigned selector, 55 unsigned long *configs, 56 unsigned num_configs); 57 void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, 58 struct seq_file *s, 59 unsigned offset); 60 void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev, 61 struct seq_file *s, 62 unsigned selector); 63 void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev, 64 struct seq_file *s, 65 unsigned long config); 66 }; 67 68 #endif 69 70 #endif /* __LINUX_PINCTRL_PINCONF_H */ 71