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Diffstat (limited to 'include/media/v4l2-common.h')
| -rw-r--r-- | include/media/v4l2-common.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h new file mode 100644 index 00000000000..d4030a7e16e --- /dev/null +++ b/include/media/v4l2-common.h @@ -0,0 +1,183 @@ +/* + 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_ + +/* v4l debugging and diagnostics */ + +/* Common printk constucts for v4l-i2c drivers. These macros create a unique + prefix consisting of the driver name, the adapter number and the i2c + address. */ +#define v4l_printk(level, name, adapter, addr, fmt, arg...) \ + printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg) + +#define v4l_client_printk(level, client, fmt, arg...) \ + v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \ + (client)->addr, fmt , ## arg) + +#define v4l_err(client, fmt, arg...) \ + v4l_client_printk(KERN_ERR, client, fmt , ## arg) + +#define v4l_warn(client, fmt, arg...) \ + v4l_client_printk(KERN_WARNING, client, fmt , ## arg) + +#define v4l_info(client, fmt, arg...) \ + v4l_client_printk(KERN_INFO, client, fmt , ## arg) + +/* These three macros assume that the debug level is set with a module + parameter called 'debug'. */ +#define v4l_dbg(level, debug, client, fmt, arg...) \ + do { \ + if (debug >= (level)) \ + v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \ + } while (0) + +/* Prints the ioctl in a human-readable format */ +extern void v4l_printk_ioctl(unsigned int cmd); + +/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */ +#define v4l_print_ioctl(name, cmd) \ + do { \ + printk(KERN_DEBUG "%s: ", name); \ + v4l_printk_ioctl(cmd); \ + } while (0) + +/* Use this macro in I2C drivers where 'client' is the struct i2c_client + pointer */ +#define v4l_i2c_print_ioctl(client, cmd) \ + do { \ + v4l_client_printk(KERN_DEBUG, client, ""); \ + v4l_printk_ioctl(cmd); \ + } while (0) + +/* ------------------------------------------------------------------------- */ + +/* Internal ioctls */ + +/* 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, +}; + +/* audio ioctls */ +/* v4l device was opened in Radio mode */ +#define AUDC_SET_RADIO _IO('d',88) +/* select from TV,radio,extern,MUTE */ +#define AUDC_SET_INPUT _IOW('d',89,int) + +/* msp3400 ioctl: will be removed in the near future */ +struct msp_matrix { + int input; + int output; +}; +#define MSP_SET_MATRIX _IOW('m',17,struct msp_matrix) + +/* tuner ioctls */ +/* Sets tuner type and its I2C addr */ +#define TUNER_SET_TYPE_ADDR _IOW('d',90,int) +/* Puts tuner on powersaving state, disabling it, except for i2c */ +#define TUNER_SET_STANDBY _IOW('d',91,int) +/* Sets tda9887 specific stuff, like port1, port2 and qss */ +#define TDA9887_SET_CONFIG _IOW('d',92,int) + +/* 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_ */ |