| Linus Walleij | ae6b4d8 | 2011-10-19 18:14:33 +0200 | [diff] [blame^] | 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 | struct pinctrl_dev; |
| 18 | |
| 19 | /** |
| 20 | * struct pinconf_ops - pin config operations, to be implemented by |
| 21 | * pin configuration capable drivers. |
| 22 | * @pin_config_get: get the config of a certain pin, if the requested config |
| 23 | * is not available on this controller this should return -ENOTSUPP |
| 24 | * and if it is available but disabled it should return -EINVAL |
| 25 | * @pin_config_get: get the config of a certain pin |
| 26 | * @pin_config_set: configure an individual pin |
| 27 | * @pin_config_group_get: get configurations for an entire pin group |
| 28 | * @pin_config_group_set: configure all pins in a group |
| 29 | * @pin_config_dbg_show: optional debugfs display hook that will provide |
| 30 | * per-device info for a certain pin in debugfs |
| 31 | * @pin_config_group_dbg_show: optional debugfs display hook that will provide |
| 32 | * per-device info for a certain group in debugfs |
| 33 | */ |
| 34 | struct pinconf_ops { |
| 35 | int (*pin_config_get) (struct pinctrl_dev *pctldev, |
| 36 | unsigned pin, |
| 37 | unsigned long *config); |
| 38 | int (*pin_config_set) (struct pinctrl_dev *pctldev, |
| 39 | unsigned pin, |
| 40 | unsigned long config); |
| 41 | int (*pin_config_group_get) (struct pinctrl_dev *pctldev, |
| 42 | unsigned selector, |
| 43 | unsigned long *config); |
| 44 | int (*pin_config_group_set) (struct pinctrl_dev *pctldev, |
| 45 | unsigned selector, |
| 46 | unsigned long config); |
| 47 | void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, |
| 48 | struct seq_file *s, |
| 49 | unsigned offset); |
| 50 | void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev, |
| 51 | struct seq_file *s, |
| 52 | unsigned selector); |
| 53 | }; |
| 54 | |
| 55 | extern int pin_config_get(struct pinctrl_dev *pctldev, const char *name, |
| 56 | unsigned long *config); |
| 57 | extern int pin_config_set(struct pinctrl_dev *pctldev, const char *name, |
| 58 | unsigned long config); |
| 59 | extern int pin_config_group_get(struct pinctrl_dev *pctldev, |
| 60 | const char *pin_group, |
| 61 | unsigned long *config); |
| 62 | extern int pin_config_group_set(struct pinctrl_dev *pctldev, |
| 63 | const char *pin_group, |
| 64 | unsigned long config); |
| 65 | |
| 66 | #else |
| 67 | |
| 68 | static inline int pin_config_get(struct pinctrl_dev *pctldev, const char *name, |
| 69 | unsigned long *config) |
| 70 | { |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static inline int pin_config_set(struct pinctrl_dev *pctldev, const char *name, |
| 75 | unsigned long config) |
| 76 | { |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | static inline int pin_config_group_get(struct pinctrl_dev *pctldev, |
| 81 | const char *pin_group, |
| 82 | unsigned long *config) |
| 83 | { |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | static inline int pin_config_group_set(struct pinctrl_dev *pctldev, |
| 88 | const char *pin_group, |
| 89 | unsigned long config) |
| 90 | { |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | #endif |
| 95 | |
| 96 | #endif /* __LINUX_PINCTRL_PINCONF_H */ |