[linux-2.6-block.git] / include / media / v4l2-common.h

/*
    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>

/* v4l debugging and diagnostics */

/* Debug bitmask flags to be used on V4L2 */
#define V4L2_DEBUG_IOCTL     0x01
#define V4L2_DEBUG_IOCTL_ARG 0x02

/* 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)

/* ------------------------------------------------------------------------- */

/* 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_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);

/* ------------------------------------------------------------------------- */

/* 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 */
};

/* 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 saa7110: just ident= 100 */
	V4L2_IDENT_SAA7110 = 100,

	/* module saa7111: just ident= 101 */
	V4L2_IDENT_SAA7111 = 101,

	/* module saa7115: reserved range 102-149 */
	V4L2_IDENT_SAA7113 = 103,
	V4L2_IDENT_SAA7114 = 104,
	V4L2_IDENT_SAA7115 = 105,
	V4L2_IDENT_SAA7118 = 108,

	/* module saa7127: reserved range 150-199 */
	V4L2_IDENT_SAA7127 = 157,
	V4L2_IDENT_SAA7129 = 159,

	/* module cx25840: reserved range 200-249 */
	V4L2_IDENT_CX25836 = 236,
	V4L2_IDENT_CX25837 = 237,
	V4L2_IDENT_CX25840 = 240,
	V4L2_IDENT_CX25841 = 241,
	V4L2_IDENT_CX25842 = 242,
	V4L2_IDENT_CX25843 = 243,

	/* OmniVision sensors - range 250-299 */
	V4L2_IDENT_OV7670 = 250,
};

/* 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 TDA9887_SET_CONFIG           _IOW('d', 92, int)

/* 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)

/* 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)

/* 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)

#endif /* V4L2_COMMON_H_ */
Commit	Line	Data
b2f0648f HV	1	/*
	2	v4l2 common internal API header
	3
	4	This header contains internal shared ioctl definitions for use by the
	5	internal low-level v4l2 drivers.
	6	Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal
	7	define,
	8
	9	Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
	10
	11	This program is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2 of the License, or
	14	(at your option) any later version.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	You should have received a copy of the GNU General Public License
	22	along with this program; if not, write to the Free Software
	23	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	24	*/
	25
	26	#ifndef V4L2_COMMON_H_
	27	#define V4L2_COMMON_H_
	28
401998fa MCC	29	#include <media/v4l2-dev.h>
401998fa MCC	30
7e8b09ea HV	31	/* v4l debugging and diagnostics */
7e8b09ea HV	32
401998fa MCC	33	/* Debug bitmask flags to be used on V4L2 */
	34	#define V4L2_DEBUG_IOCTL 0x01
	35	#define V4L2_DEBUG_IOCTL_ARG 0x02
	36
7e8b09ea HV	37	/* Common printk constucts for v4l-i2c drivers. These macros create a unique
	38	prefix consisting of the driver name, the adapter number and the i2c
	39	address. */
	40	#define v4l_printk(level, name, adapter, addr, fmt, arg...) \
	41	printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)
	42
cab462f7	43	#define v4l_client_printk(level, client, fmt, arg...) \
7e8b09ea HV	44	v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \
	45	(client)->addr, fmt , ## arg)
	46
	47	#define v4l_err(client, fmt, arg...) \
	48	v4l_client_printk(KERN_ERR, client, fmt , ## arg)
	49
	50	#define v4l_warn(client, fmt, arg...) \
	51	v4l_client_printk(KERN_WARNING, client, fmt , ## arg)
	52
	53	#define v4l_info(client, fmt, arg...) \
	54	v4l_client_printk(KERN_INFO, client, fmt , ## arg)
	55
	56	/* These three macros assume that the debug level is set with a module
	57	parameter called 'debug'. */
f167cb4e	58	#define v4l_dbg(level, debug, client, fmt, arg...) \
7e8b09ea HV	59	do { \
	60	if (debug >= (level)) \
	61	v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
	62	} while (0)
	63
	64	/* Prints the ioctl in a human-readable format */
	65	extern void v4l_printk_ioctl(unsigned int cmd);
	66
	67	/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
	68	#define v4l_print_ioctl(name, cmd) \
	69	do { \
	70	printk(KERN_DEBUG "%s: ", name); \
	71	v4l_printk_ioctl(cmd); \
	72	} while (0)
	73
	74	/* Use this macro in I2C drivers where 'client' is the struct i2c_client
	75	pointer */
	76	#define v4l_i2c_print_ioctl(client, cmd) \
	77	do { \
	78	v4l_client_printk(KERN_DEBUG, client, ""); \
	79	v4l_printk_ioctl(cmd); \
	80	} while (0)
	81
	82	/* ------------------------------------------------------------------------- */
	83
9cb2318b HV	84	/* Control helper functions */
	85
	86	int v4l2_ctrl_check(struct v4l2_ext_control ctrl, struct v4l2_queryctrl qctrl,
	87	const char **menu_items);
	88	const char **v4l2_ctrl_get_menu(u32 id);
	89	int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
	90	int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl);
	91	int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu,
	92	struct v4l2_queryctrl qctrl, const char *menu_items);
	93	u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
	94
	95	/* ------------------------------------------------------------------------- */
	96
7e8b09ea HV	97	/* Internal ioctls */
7e8b09ea HV	98
b2f0648f HV	99	/* VIDIOC_INT_DECODE_VBI_LINE */
	100	struct v4l2_decode_vbi_line {
	101	u32 is_second_field; /* Set to 0 for the first (odd) field,
	102	set to 1 for the second (even) field. */
	103	u8 p; / Pointer to the sliced VBI data from the decoder.
	104	On exit points to the start of the payload. */
	105	u32 line; /* Line number of the sliced VBI data (1-23) */
	106	u32 type; /* VBI service type (V4L2_SLICED_). 0 if no service found /
	107	};
	108
	109	/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
	110	enum v4l2_chip_ident {
	111	/* general idents: reserved range 0-49 */
	112	V4L2_IDENT_UNKNOWN = 0,
	113
89f75ffc MCC	114	/* module saa7110: just ident= 100 */
	115	V4L2_IDENT_SAA7110 = 100,
	116
	117	/* module saa7111: just ident= 101 */
	118	V4L2_IDENT_SAA7111 = 101,
	119
	120	/* module saa7115: reserved range 102-149 */
f5762e44	121	V4L2_IDENT_SAA7113 = 103,
b2f0648f HV	122	V4L2_IDENT_SAA7114 = 104,
b2f0648f HV	123	V4L2_IDENT_SAA7115 = 105,
89f75ffc	124	V4L2_IDENT_SAA7118 = 108,
b2f0648f HV	125
	126	/* module saa7127: reserved range 150-199 */
	127	V4L2_IDENT_SAA7127 = 157,
	128	V4L2_IDENT_SAA7129 = 159,
	129
	130	/* module cx25840: reserved range 200-249 */
e2b8cf4c HV	131	V4L2_IDENT_CX25836 = 236,
e2b8cf4c HV	132	V4L2_IDENT_CX25837 = 237,
b2f0648f HV	133	V4L2_IDENT_CX25840 = 240,
	134	V4L2_IDENT_CX25841 = 241,
	135	V4L2_IDENT_CX25842 = 242,
	136	V4L2_IDENT_CX25843 = 243,
111f3356 JC	137
	138	/* OmniVision sensors - range 250-299 */
	139	V4L2_IDENT_OV7670 = 250,
b2f0648f HV	140	};
b2f0648f HV	141
5e453dc7	142	/* audio ioctls */
757d2505 HV	143
757d2505 HV	144	/* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */
5e453dc7	145	#define AUDC_SET_RADIO _IO('d',88)
757d2505	146
5e453dc7	147	/* tuner ioctls */
757d2505	148
5e453dc7	149	/* Sets tuner type and its I2C addr */
757d2505 HV	150	#define TUNER_SET_TYPE_ADDR _IOW('d', 90, int)
	151
	152	/* Puts tuner on powersaving state, disabling it, except for i2c. To be replaced
	153	by VIDIOC_INT_S_STANDBY. */
	154	#define TUNER_SET_STANDBY _IOW('d', 91, int)
	155
5e453dc7	156	/* Sets tda9887 specific stuff, like port1, port2 and qss */
757d2505 HV	157	#define TDA9887_SET_CONFIG _IOW('d', 92, int)
	158
	159	/* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */
	160	#define VIDIOC_INT_S_TUNER_MODE _IOW('d', 93, enum v4l2_tuner_type)
	161
	162	/* Generic standby command. Passing -1 (all bits set to 1) will put the whole
	163	chip into standby mode, value 0 will make the chip fully active. Specific
	164	bits can be used by certain chips to enable/disable specific subsystems.
	165	Replacement of TUNER_SET_STANDBY. */
	166	#define VIDIOC_INT_S_STANDBY _IOW('d', 94, u32)
5e453dc7	167
52ebc763	168	/* 100, 101 used by VIDIOC_DBG_[SG]_REGISTER */
b2f0648f	169
784e8fe4 HV	170	/* Generic reset command. The argument selects which subsystems to reset.
	171	Passing 0 will always reset the whole chip. */
	172	#define VIDIOC_INT_RESET _IOW ('d', 102, u32)
b2f0648f	173
3578d3dd	174	/* Set the frequency (in Hz) of the audio clock output.
b2f0648f	175	Used to slave an audio processor to the video decoder, ensuring that audio
3578d3dd HV	176	and video remain synchronized.
	177	Usual values for the frequency are 48000, 44100 or 32000 Hz.
	178	If the frequency is not supported, then -EINVAL is returned. */
	179	#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
b2f0648f HV	180
	181	/* Video decoders that support sliced VBI need to implement this ioctl.
	182	Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
	183	data that was generated by the decoder. The driver then parses the sliced
	184	VBI data and sets the other fields in the struct accordingly. The pointer p
	185	is updated to point to the start of the payload which can be copied
	186	verbatim into the data field of the v4l2_sliced_vbi_data struct. If no
	187	valid VBI data was found, then the type field is set to 0 on return. */
	188	#define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line)
	189
	190	/* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is
	191	filled with the data packets that should be output. Note that if you set
12db5607 MCC	192	the line field to 0, then that VBI signal is disabled. If no
12db5607 MCC	193	valid VBI data was found, then the type field is set to 0 on return. */
b2f0648f HV	194	#define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data)
	195
	196	/* Used to obtain the sliced VBI packet from a readback register. Not all
	197	video decoders support this. If no data is available because the readback
	198	register contains invalid or erroneous data -EIO is returned. Note that
	199	you must fill in the 'id' member and the 'field' member (to determine
	200	whether CC data from the first or second field should be obtained). */
41f38b43	201	#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data)
b2f0648f HV	202
	203	/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
	204	be made. */
41f38b43	205	#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident)
b2f0648f	206
9bb13a6d MCC	207	/* Sets I2S speed in bps. This is used to provide a standard way to select I2S
	208	clock used by driving digital audio streams at some board designs.
	209	Usual values for the frequency are 1024000 and 2048000.
	210	If the frequency is not supported, then -EINVAL is returned. */
	211	#define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32)
	212
757d2505 HV	213	/* Routing definition, device dependent. It specifies which inputs (if any)
	214	should be routed to which outputs (if any). */
	215	struct v4l2_routing {
	216	u32 input;
	217	u32 output;
	218	};
	219
	220	/* These internal commands should be used to define the inputs and outputs
8bf2f8e7 HV	221	of an audio/video chip. They will replace the v4l2 API commands
	222	VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT
	223	that are meant to be used by the user.
	224	The internal commands should be used to switch inputs/outputs
757d2505 HV	225	because only the driver knows how to map a 'Television' input to the precise
	226	input/output routing of an A/D converter, or a DSP, or a video digitizer.
	227	These four commands should only be sent directly to an i2c device, they
	228	should not be broadcast as the routing is very device specific. */
	229	#define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing)
41f38b43	230	#define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing)
757d2505	231	#define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing)
41f38b43	232	#define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing)
757d2505	233
b7f8292c HV	234	struct v4l2_crystal_freq {
	235	u32 freq; /* frequency in Hz of the crystal */
	236	u32 flags; /* device specific flags */
	237	};
	238
	239	/* Sets the frequency of the crystal used to generate the clocks.
	240	An extra flags field allows device specific configuration regarding
	241	clock frequency dividers, etc. If not used, then set flags to 0.
	242	If the frequency is not supported, then -EINVAL is returned. */
	243	#define VIDIOC_INT_S_CRYSTAL_FREQ _IOW ('d', 113, struct v4l2_crystal_freq)
	244
9c4dfadb JC	245	/* Initialize the sensor registors to some sort of reasonable
	246	default values. */
	247	#define VIDIOC_INT_INIT _IOW ('d', 114, u32)
	248
b2f0648f	249	#endif /* V4L2_COMMON_H_ */