V4L/DVB (11720): gspca - sonixj: Webcam 06f8:3008 added
[linux-2.6] / drivers / media / video / et61x251 / et61x251_sensor.h
1 /***************************************************************************
2  * API for image sensors connected to ET61X[12]51 PC Camera Controllers    *
3  *                                                                         *
4  * Copyright (C) 2006-2007 by Luca Risolia <luca.risolia@studio.unibo.it>  *
5  *                                                                         *
6  * This program is free software; you can redistribute it and/or modify    *
7  * it under the terms of the GNU General Public License as published by    *
8  * the Free Software Foundation; either version 2 of the License, or       *
9  * (at your option) any later version.                                     *
10  *                                                                         *
11  * This program is distributed in the hope that it will be useful,         *
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
14  * GNU General Public License for more details.                            *
15  *                                                                         *
16  * You should have received a copy of the GNU General Public License       *
17  * along with this program; if not, write to the Free Software             *
18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
19  ***************************************************************************/
20
21 #ifndef _ET61X251_SENSOR_H_
22 #define _ET61X251_SENSOR_H_
23
24 #include <linux/usb.h>
25 #include <linux/videodev2.h>
26 #include <linux/device.h>
27 #include <linux/stddef.h>
28 #include <linux/errno.h>
29 #include <asm/types.h>
30
31 struct et61x251_device;
32 struct et61x251_sensor;
33
34 /*****************************************************************************/
35
36 extern int et61x251_probe_tas5130d1b(struct et61x251_device* cam);
37
38 #define ET61X251_SENSOR_TABLE                                                 \
39 /* Weak detections must go at the end of the list */                          \
40 static int (*et61x251_sensor_table[])(struct et61x251_device*) = {            \
41         &et61x251_probe_tas5130d1b,                                           \
42         NULL,                                                                 \
43 };
44
45 extern struct et61x251_device*
46 et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id);
47
48 extern void
49 et61x251_attach_sensor(struct et61x251_device* cam,
50                        const struct et61x251_sensor* sensor);
51
52 /*****************************************************************************/
53
54 extern int et61x251_write_reg(struct et61x251_device*, u8 value, u16 index);
55 extern int et61x251_i2c_raw_write(struct et61x251_device*, u8 n, u8 data1,
56                                   u8 data2, u8 data3, u8 data4, u8 data5,
57                                   u8 data6, u8 data7, u8 data8, u8 address);
58
59 /*****************************************************************************/
60
61 enum et61x251_i2c_sysfs_ops {
62         ET61X251_I2C_READ = 0x01,
63         ET61X251_I2C_WRITE = 0x02,
64 };
65
66 enum et61x251_i2c_interface {
67         ET61X251_I2C_2WIRES,
68         ET61X251_I2C_3WIRES,
69 };
70
71 /* Repeat start condition when RSTA is high */
72 enum et61x251_i2c_rsta {
73         ET61X251_I2C_RSTA_STOP = 0x00, /* stop then start */
74         ET61X251_I2C_RSTA_REPEAT = 0x01, /* repeat start */
75 };
76
77 #define ET61X251_MAX_CTRLS (V4L2_CID_LASTP1-V4L2_CID_BASE+10)
78
79 struct et61x251_sensor {
80         char name[32];
81
82         enum et61x251_i2c_sysfs_ops sysfs_ops;
83
84         enum et61x251_i2c_interface interface;
85         u8 i2c_slave_id;
86         enum et61x251_i2c_rsta rsta;
87         struct v4l2_rect active_pixel; /* left and top define FVSX and FVSY */
88
89         struct v4l2_queryctrl qctrl[ET61X251_MAX_CTRLS];
90         struct v4l2_cropcap cropcap;
91         struct v4l2_pix_format pix_format;
92
93         int (*init)(struct et61x251_device* cam);
94         int (*get_ctrl)(struct et61x251_device* cam,
95                         struct v4l2_control* ctrl);
96         int (*set_ctrl)(struct et61x251_device* cam,
97                         const struct v4l2_control* ctrl);
98         int (*set_crop)(struct et61x251_device* cam,
99                         const struct v4l2_rect* rect);
100         int (*set_pix_format)(struct et61x251_device* cam,
101                               const struct v4l2_pix_format* pix);
102
103         /* Private */
104         struct v4l2_queryctrl _qctrl[ET61X251_MAX_CTRLS];
105         struct v4l2_rect _rect;
106 };
107
108 #endif /* _ET61X251_SENSOR_H_ */