184 lines
7.0 KiB
C
184 lines
7.0 KiB
C
/*
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v4l2 common internal API header
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This header contains internal shared ioctl definitions for use by the
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internal low-level v4l2 drivers.
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Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal
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define,
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Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef V4L2_COMMON_H_
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#define V4L2_COMMON_H_
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/* v4l debugging and diagnostics */
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/* Common printk constucts for v4l-i2c drivers. These macros create a unique
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prefix consisting of the driver name, the adapter number and the i2c
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address. */
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#define v4l_printk(level, name, adapter, addr, fmt, arg...) \
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printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)
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#define v4l_client_printk(level, client, fmt, arg...) \
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v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \
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(client)->addr, fmt , ## arg)
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#define v4l_err(client, fmt, arg...) \
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v4l_client_printk(KERN_ERR, client, fmt , ## arg)
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#define v4l_warn(client, fmt, arg...) \
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v4l_client_printk(KERN_WARNING, client, fmt , ## arg)
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#define v4l_info(client, fmt, arg...) \
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v4l_client_printk(KERN_INFO, client, fmt , ## arg)
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/* These three macros assume that the debug level is set with a module
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parameter called 'debug'. */
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#define v4l_dbg(level, debug, client, fmt, arg...) \
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do { \
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if (debug >= (level)) \
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v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
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} while (0)
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/* Prints the ioctl in a human-readable format */
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extern void v4l_printk_ioctl(unsigned int cmd);
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/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
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#define v4l_print_ioctl(name, cmd) \
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do { \
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printk(KERN_DEBUG "%s: ", name); \
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v4l_printk_ioctl(cmd); \
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} while (0)
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/* Use this macro in I2C drivers where 'client' is the struct i2c_client
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pointer */
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#define v4l_i2c_print_ioctl(client, cmd) \
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do { \
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v4l_client_printk(KERN_DEBUG, client, ""); \
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v4l_printk_ioctl(cmd); \
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} while (0)
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/* ------------------------------------------------------------------------- */
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/* Internal ioctls */
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/* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */
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struct v4l2_register {
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u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */
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unsigned long reg;
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u32 val;
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};
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/* VIDIOC_INT_DECODE_VBI_LINE */
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struct v4l2_decode_vbi_line {
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u32 is_second_field; /* Set to 0 for the first (odd) field,
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set to 1 for the second (even) field. */
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u8 *p; /* Pointer to the sliced VBI data from the decoder.
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On exit points to the start of the payload. */
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u32 line; /* Line number of the sliced VBI data (1-23) */
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u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
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};
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/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
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enum v4l2_chip_ident {
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/* general idents: reserved range 0-49 */
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V4L2_IDENT_UNKNOWN = 0,
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/* module saa7115: reserved range 100-149 */
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V4L2_IDENT_SAA7114 = 104,
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V4L2_IDENT_SAA7115 = 105,
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/* module saa7127: reserved range 150-199 */
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V4L2_IDENT_SAA7127 = 157,
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V4L2_IDENT_SAA7129 = 159,
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/* module cx25840: reserved range 200-249 */
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V4L2_IDENT_CX25840 = 240,
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V4L2_IDENT_CX25841 = 241,
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V4L2_IDENT_CX25842 = 242,
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V4L2_IDENT_CX25843 = 243,
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};
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/* audio ioctls */
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/* v4l device was opened in Radio mode */
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#define AUDC_SET_RADIO _IO('d',88)
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/* select from TV,radio,extern,MUTE */
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#define AUDC_SET_INPUT _IOW('d',89,int)
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/* msp3400 ioctl: will be removed in the near future */
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struct msp_matrix {
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int input;
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int output;
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};
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#define MSP_SET_MATRIX _IOW('m',17,struct msp_matrix)
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/* tuner ioctls */
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/* Sets tuner type and its I2C addr */
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#define TUNER_SET_TYPE_ADDR _IOW('d',90,int)
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/* Puts tuner on powersaving state, disabling it, except for i2c */
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#define TUNER_SET_STANDBY _IOW('d',91,int)
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/* Sets tda9887 specific stuff, like port1, port2 and qss */
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#define TDA9887_SET_CONFIG _IOW('d',92,int)
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/* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
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#define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register)
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#define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register)
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/* Reset the I2C chip */
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#define VIDIOC_INT_RESET _IO ('d', 102)
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/* Set the frequency (in Hz) of the audio clock output.
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Used to slave an audio processor to the video decoder, ensuring that audio
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and video remain synchronized.
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Usual values for the frequency are 48000, 44100 or 32000 Hz.
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If the frequency is not supported, then -EINVAL is returned. */
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#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
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/* Video decoders that support sliced VBI need to implement this ioctl.
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Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
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data that was generated by the decoder. The driver then parses the sliced
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VBI data and sets the other fields in the struct accordingly. The pointer p
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is updated to point to the start of the payload which can be copied
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verbatim into the data field of the v4l2_sliced_vbi_data struct. If no
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valid VBI data was found, then the type field is set to 0 on return. */
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#define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line)
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/* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is
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filled with the data packets that should be output. Note that if you set
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the line field to 0, then that VBI signal is disabled. */
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#define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data)
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/* Used to obtain the sliced VBI packet from a readback register. Not all
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video decoders support this. If no data is available because the readback
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register contains invalid or erroneous data -EIO is returned. Note that
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you must fill in the 'id' member and the 'field' member (to determine
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whether CC data from the first or second field should be obtained). */
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#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data *)
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/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
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be made. */
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#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident *)
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/* Sets I2S speed in bps. This is used to provide a standard way to select I2S
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clock used by driving digital audio streams at some board designs.
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Usual values for the frequency are 1024000 and 2048000.
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If the frequency is not supported, then -EINVAL is returned. */
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#define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32)
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#endif /* V4L2_COMMON_H_ */
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