diff options
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-common.h | 135 | ||||
| -rw-r--r-- | include/media/v4l2-subdev.h | 107 |
2 files changed, 104 insertions, 138 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 3a69056..8ec50fe 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -125,7 +125,7 @@ int v4l2_chip_match_host(const struct v4l2_dbg_match *match); /* ------------------------------------------------------------------------- */ -/* Helper function for I2C legacy drivers */ +/* I2C Helper functions */ struct i2c_driver; struct i2c_adapter; @@ -135,9 +135,6 @@ struct v4l2_device; struct v4l2_subdev; struct v4l2_subdev_ops; -int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver, - const char *name, - int (*probe)(struct i2c_client *, const struct i2c_device_id *)); /* Load an i2c module and return an initialized v4l2_subdev struct. Only call request_module if module_name != NULL. @@ -171,139 +168,25 @@ const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type); /* ------------------------------------------------------------------------- */ -/* Internal ioctls */ - -/* 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 */ -}; +/* Note: these remaining ioctls should be removed as well, but they are still + used in tuner-simple.c (TUNER_SET_CONFIG) and cx18/ivtv (RESET and + S_AUDIO_ROUTING). To remove these ioctls some more cleanup is needed in + those modules. */ +/* s_config */ struct v4l2_priv_tun_config { int tuner; void *priv; }; - -/* audio ioctls */ - -/* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */ -#define AUDC_SET_RADIO _IO('d',88) - -/* 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. To be replaced - by VIDIOC_INT_S_STANDBY. */ -#define TUNER_SET_STANDBY _IOW('d', 91, int) - -/* Sets tda9887 specific stuff, like port1, port2 and qss */ #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) -/* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */ -#define VIDIOC_INT_S_TUNER_MODE _IOW('d', 93, enum v4l2_tuner_type) - -/* Generic standby command. Passing -1 (all bits set to 1) will put the whole - chip into standby mode, value 0 will make the chip fully active. Specific - bits can be used by certain chips to enable/disable specific subsystems. - Replacement of TUNER_SET_STANDBY. */ -#define VIDIOC_INT_S_STANDBY _IOW('d', 94, u32) - -/* 100, 101 used by VIDIOC_DBG_[SG]_REGISTER */ - -/* Generic reset command. The argument selects which subsystems to reset. - Passing 0 will always reset the whole chip. */ -#define VIDIOC_INT_RESET _IOW ('d', 102, u32) - -/* 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. If no - valid VBI data was found, then the type field is set to 0 on return. */ -#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) - -/* 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) - -/* Routing definition, device dependent. It specifies which inputs (if any) - should be routed to which outputs (if any). */ +/* s_routing: routing definition, device dependent. It specifies which inputs + (if any) should be routed to which outputs (if any). */ struct v4l2_routing { u32 input; u32 output; }; - -/* These internal commands should be used to define the inputs and outputs - of an audio/video chip. They will replace the v4l2 API commands - VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT - that are meant to be used by the user. - The internal commands should be used to switch inputs/outputs - because only the driver knows how to map a 'Television' input to the precise - input/output routing of an A/D converter, or a DSP, or a video digitizer. - These four commands should only be sent directly to an i2c device, they - should not be broadcast as the routing is very device specific. */ #define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing) -#define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing) -#define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing) -#define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing) - -struct v4l2_crystal_freq { - u32 freq; /* frequency in Hz of the crystal */ - u32 flags; /* device specific flags */ -}; - -/* Sets the frequency of the crystal used to generate the clocks. - An extra flags field allows device specific configuration regarding - clock frequency dividers, etc. If not used, then set flags to 0. - If the frequency is not supported, then -EINVAL is returned. */ -#define VIDIOC_INT_S_CRYSTAL_FREQ _IOW('d', 113, struct v4l2_crystal_freq) - -/* Initialize the sensor registors to some sort of reasonable - default values. */ -#define VIDIOC_INT_INIT _IOW('d', 114, u32) - -/* Set v4l2_std_id for video OUTPUT devices. This is ignored by - video input devices. */ -#define VIDIOC_INT_S_STD_OUTPUT _IOW('d', 115, v4l2_std_id) - -/* Get v4l2_std_id for video OUTPUT devices. This is ignored by - video input devices. */ -#define VIDIOC_INT_G_STD_OUTPUT _IOW('d', 116, v4l2_std_id) - -/* Set GPIO pins. Very simple right now, might need to be extended with - a v4l2_gpio struct if a direction is also needed. */ -#define VIDIOC_INT_S_GPIO _IOW('d', 117, u32) - -/* Get input status. Same as the status field in the v4l2_input struct. */ -#define VIDIOC_INT_G_INPUT_STATUS _IOR('d', 118, u32) +#define VIDIOC_INT_RESET _IOW ('d', 102, u32) #endif /* V4L2_COMMON_H_ */ diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 1d181b4..9a8535b 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -27,6 +27,22 @@ struct v4l2_device; struct v4l2_subdev; struct tuner_setup; +/* 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 */ +}; + +/* s_crystal_freq */ +struct v4l2_crystal_freq { + u32 freq; /* frequency in Hz of the crystal */ + u32 flags; /* device specific flags */ +}; + /* Sub-devices are devices that are connected somehow to the main bridge device. These devices are usually audio/video muxers/encoders/decoders or sensors and webcam controllers. @@ -68,6 +84,21 @@ struct tuner_setup; the use-case it might be better to use subdev-specific ops (currently not yet implemented) since ops provide proper type-checking. */ + +/* init: initialize the sensor registors to some sort of reasonable default + values. Do not use for new drivers and should be removed in existing + drivers. + + reset: generic reset command. The argument selects which subsystems to + reset. Passing 0 will always reset the whole chip. Do not use for new + drivers without discussing this first on the linux-media mailinglist. + There should be no reason normally to reset a device. + + s_gpio: set GPIO pins. Very simple right now, might need to be extended with + a direction argument if needed. + + s_standby: puts tuner on powersaving state, disabling it, except for i2c. + */ struct v4l2_subdev_core_ops { int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip); int (*log_status)(struct v4l2_subdev *sd); @@ -89,6 +120,14 @@ struct v4l2_subdev_core_ops { #endif }; +/* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio. + + s_radio: v4l device was opened in Radio mode, to be replaced by s_mode. + + s_type_addr: sets tuner type and its I2C addr. + + s_config: sets tda9887 specific stuff, like port1, port2 and qss + */ struct v4l2_subdev_tuner_ops { int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type); int (*s_radio)(struct v4l2_subdev *sd); @@ -101,12 +140,68 @@ struct v4l2_subdev_tuner_ops { int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); }; +/* s_clock_freq: 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. + + s_i2s_clock_freq: 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. + + s_routing: used to define the input and/or output pins of an audio chip. + Never attempt to use user-level input IDs (e.g. Composite, S-Video, + Tuner) at this level. An i2c device shouldn't know about whether an + input pin is connected to a Composite connector, become on another + board or platform it might be connected to something else entirely. + The calling driver is responsible for mapping a user-level input to + the right pins on the i2c device. + */ struct v4l2_subdev_audio_ops { int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); int (*s_i2s_clock_freq)(struct v4l2_subdev *sd, u32 freq); int (*s_routing)(struct v4l2_subdev *sd, const struct v4l2_routing *route); }; +/* + decode_vbi_line: 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. + + s_vbi_data: 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. If no valid VBI data was found, then the type field is + set to 0 on return. + + g_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). + + s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by + video input devices. + + s_crystal_freq: sets the frequency of the crystal used to generate the + clocks. An extra flags field allows device specific configuration + regarding clock frequency dividers, etc. If not used, then set flags + to 0. If the frequency is not supported, then -EINVAL is returned. + + g_input_status: get input status. Same as the status field in the v4l2_input + struct. + + s_routing: see s_routing in audio_ops, except this version is for video + devices. + */ struct v4l2_subdev_video_ops { int (*s_routing)(struct v4l2_subdev *sd, const struct v4l2_routing *route); int (*s_crystal_freq)(struct v4l2_subdev *sd, struct v4l2_crystal_freq *freq); @@ -163,18 +258,6 @@ static inline void *v4l2_get_subdevdata(const struct v4l2_subdev *sd) return sd->priv; } -/* Convert an ioctl-type command to the proper v4l2_subdev_ops function call. - This is used by subdev modules that can be called by both old-style ioctl - commands and through the v4l2_subdev_ops. - - The ioctl API of the subdev driver can call this function to call the - right ops based on the ioctl cmd and arg. - - Once all subdev drivers have been converted and all drivers no longer - use the ioctl interface, then this function can be removed. - */ -int v4l2_subdev_command(struct v4l2_subdev *sd, unsigned cmd, void *arg); - static inline void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) { |