Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 1 | /* |
| 2 | * v4l2-i2c-drv.h - contains I2C handling code that's identical for |
| 3 | * all V4L2 I2C drivers. Use this header if the |
| 4 | * I2C driver is only used by drivers converted |
| 5 | * to the bus-based I2C API. |
| 6 | * |
| 7 | * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | */ |
| 23 | |
Hans Verkuil | 7b31b57 | 2008-10-13 07:38:03 -0300 | [diff] [blame] | 24 | /* NOTE: the full version of this header is in the v4l-dvb repository |
| 25 | * and allows v4l i2c drivers to be compiled on older kernels as well. |
| 26 | * The version of this header as it appears in the kernel is a stripped |
| 27 | * version (without all the backwards compatibility stuff) and so it |
| 28 | * looks a bit odd. |
| 29 | * |
| 30 | * If you look at the full version then you will understand the reason |
| 31 | * for introducing this header since you really don't want to have all |
| 32 | * the tricky backwards compatibility code in each and every i2c driver. |
| 33 | */ |
| 34 | |
Michael Krufky | 8574ac6 | 2007-12-24 15:49:33 -0300 | [diff] [blame] | 35 | #ifndef __V4L2_I2C_DRV_H__ |
| 36 | #define __V4L2_I2C_DRV_H__ |
| 37 | |
| 38 | #include <media/v4l2-common.h> |
| 39 | |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 40 | struct v4l2_i2c_driver_data { |
| 41 | const char * const name; |
| 42 | int driverid; |
| 43 | int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 44 | int (*probe)(struct i2c_client *client, const struct i2c_device_id *id); |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 45 | int (*remove)(struct i2c_client *client); |
| 46 | int (*suspend)(struct i2c_client *client, pm_message_t state); |
| 47 | int (*resume)(struct i2c_client *client); |
Hans Verkuil | 88307eb | 2007-09-14 04:49:16 -0300 | [diff] [blame] | 48 | int (*legacy_probe)(struct i2c_adapter *adapter); |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 49 | int legacy_class; |
Jean Delvare | ae42908 | 2008-05-11 20:37:06 +0200 | [diff] [blame] | 50 | const struct i2c_device_id *id_table; |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 51 | }; |
| 52 | |
| 53 | static struct v4l2_i2c_driver_data v4l2_i2c_data; |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 54 | static struct i2c_driver v4l2_i2c_driver; |
| 55 | |
| 56 | |
| 57 | /* Bus-based I2C implementation for kernels >= 2.6.22 */ |
| 58 | |
| 59 | static int __init v4l2_i2c_drv_init(void) |
| 60 | { |
| 61 | v4l2_i2c_driver.driver.name = v4l2_i2c_data.name; |
| 62 | v4l2_i2c_driver.id = v4l2_i2c_data.driverid; |
| 63 | v4l2_i2c_driver.command = v4l2_i2c_data.command; |
| 64 | v4l2_i2c_driver.probe = v4l2_i2c_data.probe; |
| 65 | v4l2_i2c_driver.remove = v4l2_i2c_data.remove; |
| 66 | v4l2_i2c_driver.suspend = v4l2_i2c_data.suspend; |
| 67 | v4l2_i2c_driver.resume = v4l2_i2c_data.resume; |
Jean Delvare | ae42908 | 2008-05-11 20:37:06 +0200 | [diff] [blame] | 68 | v4l2_i2c_driver.id_table = v4l2_i2c_data.id_table; |
Hans Verkuil | 8ffbc65 | 2007-09-12 08:32:50 -0300 | [diff] [blame] | 69 | return i2c_add_driver(&v4l2_i2c_driver); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | static void __exit v4l2_i2c_drv_cleanup(void) |
| 74 | { |
| 75 | i2c_del_driver(&v4l2_i2c_driver); |
| 76 | } |
| 77 | |
| 78 | module_init(v4l2_i2c_drv_init); |
| 79 | module_exit(v4l2_i2c_drv_cleanup); |
Michael Krufky | 8574ac6 | 2007-12-24 15:49:33 -0300 | [diff] [blame] | 80 | |
| 81 | #endif /* __V4L2_I2C_DRV_H__ */ |