projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9c1600ed DB |
1 | /* |
| 2 | * i2c-core.h - interfaces internal to the I2C framework | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; either version 2 of the License, or | |
| 7 | * (at your option) any later version. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 9c1600ed DB |
13 | */ |
| 14 | ||
| f18c41da RG |
15 | #include <linux/rwsem.h> |
| 16 | ||
| 9c1600ed DB |
17 | struct i2c_devinfo { |
| 18 | struct list_head list; | |
| 19 | int busnum; | |
| 20 | struct i2c_board_info board_info; | |
| 21 | }; | |
| 22 | ||
| 23 | /* board_lock protects board_list and first_dynamic_bus_num. | |
| 24 | * only i2c core components are allowed to use these symbols. | |
| 25 | */ | |
| f18c41da | 26 | extern struct rw_semaphore __i2c_board_lock; |
| 9c1600ed DB |
27 | extern struct list_head __i2c_board_list; |
| 28 | extern int __i2c_first_dynamic_bus_num; | |
| 29 | ||
| 5bf4fa7d | 30 | int i2c_check_addr_validity(unsigned addr, unsigned short flags); |
| e4991ecd | 31 | int i2c_check_7bit_addr_validity_strict(unsigned short addr); |
| 5bf4fa7d | 32 | |
| 53f8f7c5 | 33 | #ifdef CONFIG_ACPI |
| c64ffff7 AS |
34 | const struct acpi_device_id * |
| 35 | i2c_acpi_match_device(const struct acpi_device_id *matches, | |
| 36 | struct i2c_client *client); | |
| 53f8f7c5 WS |
37 | void i2c_acpi_register_devices(struct i2c_adapter *adap); |
| 38 | #else /* CONFIG_ACPI */ | |
| 39 | static inline void i2c_acpi_register_devices(struct i2c_adapter *adap) { } | |
| c64ffff7 AS |
40 | static inline const struct acpi_device_id * |
| 41 | i2c_acpi_match_device(const struct acpi_device_id *matches, | |
| 42 | struct i2c_client *client) | |
| 43 | { | |
| 44 | return NULL; | |
| 45 | } | |
| 53f8f7c5 WS |
46 | #endif /* CONFIG_ACPI */ |
| 47 | extern struct notifier_block i2c_acpi_notifier; | |
| 48 | ||
| 49 | #ifdef CONFIG_ACPI_I2C_OPREGION | |
| 50 | int i2c_acpi_install_space_handler(struct i2c_adapter *adapter); | |
| 51 | void i2c_acpi_remove_space_handler(struct i2c_adapter *adapter); | |
| 52 | #else /* CONFIG_ACPI_I2C_OPREGION */ | |
| 53 | static inline int i2c_acpi_install_space_handler(struct i2c_adapter *adapter) { return 0; } | |
| 54 | static inline void i2c_acpi_remove_space_handler(struct i2c_adapter *adapter) { } | |
| 55 | #endif /* CONFIG_ACPI_I2C_OPREGION */ | |
| 56 | ||
| 5bf4fa7d WS |
57 | #ifdef CONFIG_OF |
| 58 | void of_i2c_register_devices(struct i2c_adapter *adap); | |
| 59 | #else | |
| 60 | static inline void of_i2c_register_devices(struct i2c_adapter *adap) { } | |
| 61 | #endif | |
| 62 | extern struct notifier_block i2c_of_notifier; |