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b2f0648f HV |
1 | /* |
2 | v4l2 common internal API header | |
3 | ||
4 | This header contains internal shared ioctl definitions for use by the | |
5 | internal low-level v4l2 drivers. | |
6 | Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal | |
7 | define, | |
8 | ||
9 | Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #ifndef V4L2_COMMON_H_ | |
27 | #define V4L2_COMMON_H_ | |
28 | ||
29 | /* VIDIOC_INT_AUDIO_CLOCK_FREQ */ | |
30 | enum v4l2_audio_clock_freq { | |
31 | V4L2_AUDCLK_32_KHZ = 32000, | |
32 | V4L2_AUDCLK_441_KHZ = 44100, | |
33 | V4L2_AUDCLK_48_KHZ = 48000, | |
34 | }; | |
35 | ||
36 | /* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */ | |
37 | struct v4l2_register { | |
38 | u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */ | |
39 | unsigned long reg; | |
40 | u32 val; | |
41 | }; | |
42 | ||
43 | /* VIDIOC_INT_DECODE_VBI_LINE */ | |
44 | struct v4l2_decode_vbi_line { | |
45 | u32 is_second_field; /* Set to 0 for the first (odd) field, | |
46 | set to 1 for the second (even) field. */ | |
47 | u8 *p; /* Pointer to the sliced VBI data from the decoder. | |
48 | On exit points to the start of the payload. */ | |
49 | u32 line; /* Line number of the sliced VBI data (1-23) */ | |
50 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ | |
51 | }; | |
52 | ||
53 | /* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */ | |
54 | enum v4l2_chip_ident { | |
55 | /* general idents: reserved range 0-49 */ | |
56 | V4L2_IDENT_UNKNOWN = 0, | |
57 | ||
58 | /* module saa7115: reserved range 100-149 */ | |
59 | V4L2_IDENT_SAA7114 = 104, | |
60 | V4L2_IDENT_SAA7115 = 105, | |
61 | ||
62 | /* module saa7127: reserved range 150-199 */ | |
63 | V4L2_IDENT_SAA7127 = 157, | |
64 | V4L2_IDENT_SAA7129 = 159, | |
65 | ||
66 | /* module cx25840: reserved range 200-249 */ | |
67 | V4L2_IDENT_CX25840 = 240, | |
68 | V4L2_IDENT_CX25841 = 241, | |
69 | V4L2_IDENT_CX25842 = 242, | |
70 | V4L2_IDENT_CX25843 = 243, | |
71 | }; | |
72 | ||
73 | /* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */ | |
74 | #define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register) | |
75 | #define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register) | |
76 | ||
77 | /* Reset the I2C chip */ | |
78 | #define VIDIOC_INT_RESET _IO ('d', 102) | |
79 | ||
80 | /* Set the frequency of the audio clock output. | |
81 | Used to slave an audio processor to the video decoder, ensuring that audio | |
82 | and video remain synchronized. */ | |
83 | #define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOR ('d', 103, enum v4l2_audio_clock_freq) | |
84 | ||
85 | /* Video decoders that support sliced VBI need to implement this ioctl. | |
86 | Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI | |
87 | data that was generated by the decoder. The driver then parses the sliced | |
88 | VBI data and sets the other fields in the struct accordingly. The pointer p | |
89 | is updated to point to the start of the payload which can be copied | |
90 | verbatim into the data field of the v4l2_sliced_vbi_data struct. If no | |
91 | valid VBI data was found, then the type field is set to 0 on return. */ | |
92 | #define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line) | |
93 | ||
94 | /* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is | |
95 | filled with the data packets that should be output. Note that if you set | |
96 | the line field to 0, then that VBI signal is disabled. */ | |
97 | #define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data) | |
98 | ||
99 | /* Used to obtain the sliced VBI packet from a readback register. Not all | |
100 | video decoders support this. If no data is available because the readback | |
101 | register contains invalid or erroneous data -EIO is returned. Note that | |
102 | you must fill in the 'id' member and the 'field' member (to determine | |
103 | whether CC data from the first or second field should be obtained). */ | |
104 | #define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data *) | |
105 | ||
106 | /* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can | |
107 | be made. */ | |
108 | #define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident *) | |
109 | ||
110 | #endif /* V4L2_COMMON_H_ */ |