[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);

/* Prints the ioctl and arg in a human-readable format */
extern void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg);

/* 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_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_SAA7113 = 103,
	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_CX25836 = 236,
	V4L2_IDENT_CX25837 = 237,
	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, 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)

/* 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)

/* 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)

#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
41f38b43 MCC	67	/* Prints the ioctl and arg in a human-readable format */
	68	extern void v4l_printk_ioctl_arg(char s,unsigned int cmd, void arg);
	69
7e8b09ea HV	70	/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
	71	#define v4l_print_ioctl(name, cmd) \
	72	do { \
	73	printk(KERN_DEBUG "%s: ", name); \
	74	v4l_printk_ioctl(cmd); \
	75	} while (0)
	76
	77	/* Use this macro in I2C drivers where 'client' is the struct i2c_client
	78	pointer */
	79	#define v4l_i2c_print_ioctl(client, cmd) \
	80	do { \
	81	v4l_client_printk(KERN_DEBUG, client, ""); \
	82	v4l_printk_ioctl(cmd); \
	83	} while (0)
	84
	85	/* ------------------------------------------------------------------------- */
	86
9cb2318b HV	87	/* Control helper functions */
	88
	89	int v4l2_ctrl_check(struct v4l2_ext_control ctrl, struct v4l2_queryctrl qctrl,
	90	const char **menu_items);
	91	const char **v4l2_ctrl_get_menu(u32 id);
	92	int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
	93	int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl);
	94	int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu,
	95	struct v4l2_queryctrl qctrl, const char *menu_items);
	96	u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
	97
	98	/* ------------------------------------------------------------------------- */
	99
7e8b09ea HV	100	/* Internal ioctls */
7e8b09ea HV	101
b2f0648f HV	102	/* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */
	103	struct v4l2_register {
	104	u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */
	105	unsigned long reg;
	106	u32 val;
	107	};
	108
	109	/* VIDIOC_INT_DECODE_VBI_LINE */
	110	struct v4l2_decode_vbi_line {
	111	u32 is_second_field; /* Set to 0 for the first (odd) field,
	112	set to 1 for the second (even) field. */
	113	u8 p; / Pointer to the sliced VBI data from the decoder.
	114	On exit points to the start of the payload. */
	115	u32 line; /* Line number of the sliced VBI data (1-23) */
	116	u32 type; /* VBI service type (V4L2_SLICED_). 0 if no service found /
	117	};
	118
	119	/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
	120	enum v4l2_chip_ident {
	121	/* general idents: reserved range 0-49 */
	122	V4L2_IDENT_UNKNOWN = 0,
	123
	124	/* module saa7115: reserved range 100-149 */
f5762e44	125	V4L2_IDENT_SAA7113 = 103,
b2f0648f HV	126	V4L2_IDENT_SAA7114 = 104,
	127	V4L2_IDENT_SAA7115 = 105,
	128
	129	/* module saa7127: reserved range 150-199 */
	130	V4L2_IDENT_SAA7127 = 157,
	131	V4L2_IDENT_SAA7129 = 159,
	132
	133	/* module cx25840: reserved range 200-249 */
e2b8cf4c HV	134	V4L2_IDENT_CX25836 = 236,
e2b8cf4c HV	135	V4L2_IDENT_CX25837 = 237,
b2f0648f HV	136	V4L2_IDENT_CX25840 = 240,
	137	V4L2_IDENT_CX25841 = 241,
	138	V4L2_IDENT_CX25842 = 242,
	139	V4L2_IDENT_CX25843 = 243,
	140	};
	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
b2f0648f HV	168	/* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
	169	#define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register)
	170	#define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register)
	171
784e8fe4 HV	172	/* Generic reset command. The argument selects which subsystems to reset.
	173	Passing 0 will always reset the whole chip. */
	174	#define VIDIOC_INT_RESET _IOW ('d', 102, u32)
b2f0648f	175
3578d3dd	176	/* Set the frequency (in Hz) of the audio clock output.
b2f0648f	177	Used to slave an audio processor to the video decoder, ensuring that audio
3578d3dd HV	178	and video remain synchronized.
	179	Usual values for the frequency are 48000, 44100 or 32000 Hz.
	180	If the frequency is not supported, then -EINVAL is returned. */
	181	#define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
b2f0648f HV	182
	183	/* Video decoders that support sliced VBI need to implement this ioctl.
	184	Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
	185	data that was generated by the decoder. The driver then parses the sliced
	186	VBI data and sets the other fields in the struct accordingly. The pointer p
	187	is updated to point to the start of the payload which can be copied
	188	verbatim into the data field of the v4l2_sliced_vbi_data struct. If no
	189	valid VBI data was found, then the type field is set to 0 on return. */
	190	#define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line)
	191
	192	/* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is
	193	filled with the data packets that should be output. Note that if you set
12db5607 MCC	194	the line field to 0, then that VBI signal is disabled. If no
12db5607 MCC	195	valid VBI data was found, then the type field is set to 0 on return. */
b2f0648f HV	196	#define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data)
	197
	198	/* Used to obtain the sliced VBI packet from a readback register. Not all
	199	video decoders support this. If no data is available because the readback
	200	register contains invalid or erroneous data -EIO is returned. Note that
	201	you must fill in the 'id' member and the 'field' member (to determine
	202	whether CC data from the first or second field should be obtained). */
41f38b43	203	#define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data)
b2f0648f HV	204
	205	/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
	206	be made. */
41f38b43	207	#define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident)
b2f0648f	208
9bb13a6d MCC	209	/* Sets I2S speed in bps. This is used to provide a standard way to select I2S
	210	clock used by driving digital audio streams at some board designs.
	211	Usual values for the frequency are 1024000 and 2048000.
	212	If the frequency is not supported, then -EINVAL is returned. */
	213	#define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32)
	214
757d2505 HV	215	/* Routing definition, device dependent. It specifies which inputs (if any)
	216	should be routed to which outputs (if any). */
	217	struct v4l2_routing {
	218	u32 input;
	219	u32 output;
	220	};
	221
	222	/* These internal commands should be used to define the inputs and outputs
8bf2f8e7 HV	223	of an audio/video chip. They will replace the v4l2 API commands
	224	VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT
	225	that are meant to be used by the user.
	226	The internal commands should be used to switch inputs/outputs
757d2505 HV	227	because only the driver knows how to map a 'Television' input to the precise
	228	input/output routing of an A/D converter, or a DSP, or a video digitizer.
	229	These four commands should only be sent directly to an i2c device, they
	230	should not be broadcast as the routing is very device specific. */
	231	#define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing)
41f38b43	232	#define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing)
757d2505	233	#define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing)
41f38b43	234	#define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing)
757d2505	235
b7f8292c HV	236	struct v4l2_crystal_freq {
	237	u32 freq; /* frequency in Hz of the crystal */
	238	u32 flags; /* device specific flags */
	239	};
	240
	241	/* Sets the frequency of the crystal used to generate the clocks.
	242	An extra flags field allows device specific configuration regarding
	243	clock frequency dividers, etc. If not used, then set flags to 0.
	244	If the frequency is not supported, then -EINVAL is returned. */
	245	#define VIDIOC_INT_S_CRYSTAL_FREQ _IOW ('d', 113, struct v4l2_crystal_freq)
	246
b2f0648f	247	#endif /* V4L2_COMMON_H_ */