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8ffbc655 HV |
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 | ||
7b31b57a | 24 | /* NOTE: the full version of this header is in the v4l-dvb repository |
719cd4ab | 25 | * and allows v4l i2c drivers to be compiled on pre-2.6.26 kernels. |
7b31b57a HV |
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. | |
719cd4ab HV |
33 | * |
34 | * If the i2c driver will never be compiled for pre-2.6.26 kernels, then | |
35 | * DO NOT USE this header! Just write it as a regular i2c driver. | |
7b31b57a HV |
36 | */ |
37 | ||
8574ac69 MK |
38 | #ifndef __V4L2_I2C_DRV_H__ |
39 | #define __V4L2_I2C_DRV_H__ | |
40 | ||
41 | #include <media/v4l2-common.h> | |
42 | ||
8ffbc655 HV |
43 | struct v4l2_i2c_driver_data { |
44 | const char * const name; | |
8ffbc655 | 45 | int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); |
d2653e92 | 46 | int (*probe)(struct i2c_client *client, const struct i2c_device_id *id); |
8ffbc655 HV |
47 | int (*remove)(struct i2c_client *client); |
48 | int (*suspend)(struct i2c_client *client, pm_message_t state); | |
49 | int (*resume)(struct i2c_client *client); | |
ae429083 | 50 | const struct i2c_device_id *id_table; |
8ffbc655 HV |
51 | }; |
52 | ||
53 | static struct v4l2_i2c_driver_data v4l2_i2c_data; | |
8ffbc655 HV |
54 | static struct i2c_driver v4l2_i2c_driver; |
55 | ||
56 | ||
acebc70d | 57 | /* Bus-based I2C implementation for kernels >= 2.6.26 */ |
8ffbc655 HV |
58 | |
59 | static int __init v4l2_i2c_drv_init(void) | |
60 | { | |
61 | v4l2_i2c_driver.driver.name = v4l2_i2c_data.name; | |
8ffbc655 HV |
62 | v4l2_i2c_driver.command = v4l2_i2c_data.command; |
63 | v4l2_i2c_driver.probe = v4l2_i2c_data.probe; | |
64 | v4l2_i2c_driver.remove = v4l2_i2c_data.remove; | |
65 | v4l2_i2c_driver.suspend = v4l2_i2c_data.suspend; | |
66 | v4l2_i2c_driver.resume = v4l2_i2c_data.resume; | |
ae429083 | 67 | v4l2_i2c_driver.id_table = v4l2_i2c_data.id_table; |
8ffbc655 HV |
68 | return i2c_add_driver(&v4l2_i2c_driver); |
69 | } | |
70 | ||
71 | ||
72 | static void __exit v4l2_i2c_drv_cleanup(void) | |
73 | { | |
74 | i2c_del_driver(&v4l2_i2c_driver); | |
75 | } | |
76 | ||
77 | module_init(v4l2_i2c_drv_init); | |
78 | module_exit(v4l2_i2c_drv_cleanup); | |
8574ac69 MK |
79 | |
80 | #endif /* __V4L2_I2C_DRV_H__ */ |