forked from Minki/linux
69028d7096
Add function that returns the control name. Allows this to be used in places where the normal v4l2_ctrl_query_fill() function cannot be used (e.g. uvc). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
241 lines
10 KiB
C
241 lines
10 KiB
C
/*
|
|
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_
|
|
|
|
#include <media/v4l2-dev.h>
|
|
|
|
/* 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)
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* Priority helper functions */
|
|
|
|
struct v4l2_prio_state {
|
|
atomic_t prios[4];
|
|
};
|
|
int v4l2_prio_init(struct v4l2_prio_state *global);
|
|
int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
|
|
enum v4l2_priority new);
|
|
int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
|
|
int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
|
|
enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
|
|
int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* Control helper functions */
|
|
|
|
int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
|
|
const char **menu_items);
|
|
const char *v4l2_ctrl_get_name(u32 id);
|
|
const char **v4l2_ctrl_get_menu(u32 id);
|
|
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
|
|
int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl);
|
|
int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu,
|
|
struct v4l2_queryctrl *qctrl, const char **menu_items);
|
|
u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* Register/chip ident helper function */
|
|
|
|
struct i2c_client; /* forward reference */
|
|
int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id);
|
|
int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
|
|
u32 ident, u32 revision);
|
|
int v4l2_chip_match_host(u32 id_type, u32 chip_id);
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* Helper function for I2C legacy drivers */
|
|
|
|
struct i2c_driver;
|
|
struct i2c_adapter;
|
|
struct i2c_client;
|
|
struct i2c_device_id;
|
|
|
|
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 *));
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* 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 */
|
|
};
|
|
|
|
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). */
|
|
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)
|
|
|
|
#endif /* V4L2_COMMON_H_ */
|