This commit was manufactured by cvs2svn to create branch 'vserver'.
[linux-2.6.git] / drivers / usb / media / et61x251_sensor.h
1 /***************************************************************************
2  * API for image sensors connected to ET61X[12]51 PC Camera Controllers    *
3  *                                                                         *
4  * Copyright (C) 2006 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/videodev.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 void
46 et61x251_attach_sensor(struct et61x251_device* cam,
47                        struct et61x251_sensor* sensor);
48
49 /*****************************************************************************/
50
51 extern int et61x251_write_reg(struct et61x251_device*, u8 value, u16 index);
52 extern int et61x251_read_reg(struct et61x251_device*, u16 index);
53 extern int et61x251_i2c_write(struct et61x251_device*, u8 address, u8 value);
54 extern int et61x251_i2c_read(struct et61x251_device*, u8 address);
55 extern int et61x251_i2c_try_write(struct et61x251_device*,
56                                   struct et61x251_sensor*, u8 address,
57                                   u8 value);
58 extern int et61x251_i2c_try_read(struct et61x251_device*,
59                                  struct et61x251_sensor*, u8 address);
60 extern int et61x251_i2c_raw_write(struct et61x251_device*, u8 n, u8 data1,
61                                   u8 data2, u8 data3, u8 data4, u8 data5,
62                                   u8 data6, u8 data7, u8 data8, u8 address);
63
64 /*****************************************************************************/
65
66 enum et61x251_i2c_sysfs_ops {
67         ET61X251_I2C_READ = 0x01,
68         ET61X251_I2C_WRITE = 0x02,
69 };
70
71 enum et61x251_i2c_interface {
72         ET61X251_I2C_2WIRES,
73         ET61X251_I2C_3WIRES,
74 };
75
76 /* Repeat start condition when RSTA is high */
77 enum et61x251_i2c_rsta {
78         ET61X251_I2C_RSTA_STOP = 0x00, /* stop then start */
79         ET61X251_I2C_RSTA_REPEAT = 0x01, /* repeat start */
80 };
81
82 #define ET61X251_MAX_CTRLS V4L2_CID_LASTP1-V4L2_CID_BASE+10
83
84 struct et61x251_sensor {
85         char name[32];
86
87         enum et61x251_i2c_sysfs_ops sysfs_ops;
88
89         enum et61x251_i2c_interface interface;
90         u8 i2c_slave_id;
91         enum et61x251_i2c_rsta rsta;
92         struct v4l2_rect active_pixel; /* left and top define FVSX and FVSY */
93
94         struct v4l2_queryctrl qctrl[ET61X251_MAX_CTRLS];
95         struct v4l2_cropcap cropcap;
96         struct v4l2_pix_format pix_format;
97
98         int (*init)(struct et61x251_device* cam);
99         int (*get_ctrl)(struct et61x251_device* cam,
100                         struct v4l2_control* ctrl);
101         int (*set_ctrl)(struct et61x251_device* cam,
102                         const struct v4l2_control* ctrl);
103         int (*set_crop)(struct et61x251_device* cam,
104                         const struct v4l2_rect* rect);
105         int (*set_pix_format)(struct et61x251_device* cam,
106                               const struct v4l2_pix_format* pix);
107
108         const struct usb_device* usbdev;
109
110         /* Private */
111         struct v4l2_queryctrl _qctrl[ET61X251_MAX_CTRLS];
112         struct v4l2_rect _rect;
113 };
114
115 #endif /* _ET61X251_SENSOR_H_ */