| /* |
| 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, client, fmt, arg...) \ |
| do { \ |
| extern int debug; \ |
| 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) |
| |
| /* 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_ */ |