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 */
+};
+
/* 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.
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.
+
+ load_fw: load firmware.
+
+ 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.
+ */
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);
int (*init)(struct v4l2_subdev *sd, u32 val);
- int (*s_standby)(struct v4l2_subdev *sd, u32 standby);
+ int (*load_fw)(struct v4l2_subdev *sd);
int (*reset)(struct v4l2_subdev *sd, u32 val);
int (*s_gpio)(struct v4l2_subdev *sd, u32 val);
int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
+ int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
#ifdef CONFIG_VIDEO_ADV_DEBUG
int (*g_register)(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
#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
+
+ s_standby: puts tuner on powersaving state, disabling it, except for i2c.
+ */
struct v4l2_subdev_tuner_ops {
int (*s_mode)(struct v4l2_subdev *sd, enum v4l2_tuner_type);
int (*s_radio)(struct v4l2_subdev *sd);
int (*g_frequency)(struct v4l2_subdev *sd, struct v4l2_frequency *freq);
int (*g_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt);
int (*s_tuner)(struct v4l2_subdev *sd, struct v4l2_tuner *vt);
- int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
int (*s_type_addr)(struct v4l2_subdev *sd, struct tuner_setup *type);
int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config);
+ int (*s_standby)(struct v4l2_subdev *sd);
};
+/* 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,
+ and any additional configuration data.
+ 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);
+ int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
};
+/*
+ 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 in Hz. 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);
+ int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
+ int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags);
int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line);
int (*s_vbi_data)(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *vbi_data);
int (*g_vbi_data)(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_data *vbi_data);
#define V4L2_SUBDEV_NAME_SIZE 32
+/* Set this flag if this subdev is a i2c device. */
+#define V4L2_SUBDEV_FL_IS_I2C (1U << 0)
+
/* Each instance of a subdev driver should create this struct, either
stand-alone or embedded in a larger struct.
*/
struct v4l2_subdev {
struct list_head list;
struct module *owner;
+ u32 flags;
struct v4l2_device *v4l2_dev;
const struct v4l2_subdev_ops *ops;
/* name must be unique */
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)
{
BUG_ON(!ops || !ops->core);
sd->ops = ops;
sd->v4l2_dev = NULL;
+ sd->flags = 0;
sd->name[0] = '\0';
sd->grp_id = 0;
sd->priv = NULL;
git.openpandora.org / pandora-kernel.git / blobdiff