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/*
v4l2 common internal API header
This header contains internal shared ioctl definitions for use by the
internal low-level v4l2 drivers.
Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal
define,
Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef V4L2_COMMON_H_
#define V4L2_COMMON_H_
/* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */
struct v4l2_register {
u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */
unsigned long reg;
u32 val;
};
/* VIDIOC_INT_DECODE_VBI_LINE */
struct v4l2_decode_vbi_line {
u32 is_second_field; /* Set to 0 for the first (odd) field,
set to 1 for the second (even) field. */
u8 *p; /* Pointer to the sliced VBI data from the decoder.
On exit points to the start of the payload. */
u32 line; /* Line number of the sliced VBI data (1-23) */
u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
};
/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
enum v4l2_chip_ident {
/* general idents: reserved range 0-49 */
V4L2_IDENT_UNKNOWN = 0,
/* module saa7115: reserved range 100-149 */
V4L2_IDENT_SAA7114 = 104,
V4L2_IDENT_SAA7115 = 105,
/* module saa7127: reserved range 150-199 */
V4L2_IDENT_SAA7127 = 157,
V4L2_IDENT_SAA7129 = 159,
/* module cx25840: reserved range 200-249 */
V4L2_IDENT_CX25840 = 240,
V4L2_IDENT_CX25841 = 241,
V4L2_IDENT_CX25842 = 242,
V4L2_IDENT_CX25843 = 243,
};
/* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
#define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register)
#define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register)
/* Reset the I2C chip */
#define VIDIOC_INT_RESET _IO ('d', 102)
/* Set the frequency (in Hz) of the audio clock output.
Used to slave an audio processor to the video decoder, ensuring that audio
and video remain synchronized.
Usual values for the frequency are 48000, 44100 or 32000 Hz.
If the frequency is not supported, then -EINVAL is returned. */
#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
/* Video decoders that support sliced VBI need to implement this ioctl.
Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
data that was generated by the decoder. The driver then parses the sliced
VBI data and sets the other fields in the struct accordingly. The pointer p
is updated to point to the start of the payload which can be copied
verbatim into the data field of the v4l2_sliced_vbi_data struct. If no
valid VBI data was found, then the type field is set to 0 on return. */
#define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line)
/* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is
filled with the data packets that should be output. Note that if you set
the line field to 0, then that VBI signal is disabled. */
#define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data)
/* Used to obtain the sliced VBI packet from a readback register. Not all
video decoders support this. If no data is available because the readback
register contains invalid or erroneous data -EIO is returned. Note that
you must fill in the 'id' member and the 'field' member (to determine
whether CC data from the first or second field should be obtained). */
#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data *)
/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
be made. */
#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident *)
/* Sets I2S speed in bps. This is used to provide a standard way to select I2S
clock used by driving digital audio streams at some board designs.
Usual values for the frequency are 1024000 and 2048000.
If the frequency is not supported, then -EINVAL is returned. */
#define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32)
#endif /* V4L2_COMMON_H_ */
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