Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0996517c authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB: v4l2: Add new control handling framework 



Add a new framework to handle controls which makes life for driver
developers much easier.

Note that this patch moves some of the control support that used to be in
v4l2-common.c to v4l2-ctrls.c. The tables were copied unchanged. The body
of v4l2_ctrl_query_fill() was copied to a new v4l2_ctrl_fill() function
in v4l2-ctrls.c. This new function doesn't use the v4l2_queryctrl
struct anymore, which makes it more general.

The remainder of v4l2-ctrls.c is all new. Highlights include:

- No need to implement VIDIOC_QUERYCTRL, QUERYMENU, S_CTRL, G_CTRL,
  S_EXT_CTRLS, G_EXT_CTRLS or TRY_EXT_CTRLS in either bridge drivers
  or subdevs. New wrapper functions are provided that can just be plugged in.
  Once everything has been converted these wrapper functions can be removed as well.

- When subdevices are added their controls can be automatically merged
  with the bridge driver's controls.

- Most drivers just need to implement s_ctrl to set the controls.
  The framework handles the locking and tries to be as 'atomic' as possible.

- Ready for the subdev device nodes: the same mechanism applies to subdevs
  and their device nodes as well. Sub-device drivers can make controls
  local, preventing them from being merged with bridge drivers.

- Takes care of backwards compatibility handling of VIDIOC_S_CTRL and
  VIDIOC_G_CTRL. Handling of V4L2_CID_PRIVATE_BASE is fully transparent.
  CTRL_CLASS controls are automatically added.

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 03e30ca5

drivers/media/video/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -11,7 +11,7 @@ stkwebcam-objs := stk-webcam.o stk-sensor.o 
omap2cam-objs	:=	omap24xxcam.o omap24xxcam-dma.o



videodev-objs	:=	v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o \

			v4l2-event.o

			v4l2-event.o v4l2-ctrls.o



# V4L2 core modules

drivers/media/video/v4l2-common.c

+5 −474
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ 
#define __OLD_VIDIOC_ /* To allow fixing old calls*/

#include <media/v4l2-common.h>

#include <media/v4l2-device.h>

#include <media/v4l2-ctrls.h>

#include <media/v4l2-chip-ident.h>



#include <linux/videodev2.h>
@@ -172,487 +173,17 @@ int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, 
}

EXPORT_SYMBOL(v4l2_ctrl_check);



/* Returns NULL or a character pointer array containing the menu for

   the given control ID. The pointer array ends with a NULL pointer.

   An empty string signifies a menu entry that is invalid. This allows

   drivers to disable certain options if it is not supported. */

const char **v4l2_ctrl_get_menu(u32 id)

{

	static const char *mpeg_audio_sampling_freq[] = {

		"44.1 kHz",

		"48 kHz",

		"32 kHz",

		NULL

	};

	static const char *mpeg_audio_encoding[] = {

		"MPEG-1/2 Layer I",

		"MPEG-1/2 Layer II",

		"MPEG-1/2 Layer III",

		"MPEG-2/4 AAC",

		"AC-3",

		NULL

	};

	static const char *mpeg_audio_l1_bitrate[] = {

		"32 kbps",

		"64 kbps",

		"96 kbps",

		"128 kbps",

		"160 kbps",

		"192 kbps",

		"224 kbps",

		"256 kbps",

		"288 kbps",

		"320 kbps",

		"352 kbps",

		"384 kbps",

		"416 kbps",

		"448 kbps",

		NULL

	};

	static const char *mpeg_audio_l2_bitrate[] = {

		"32 kbps",

		"48 kbps",

		"56 kbps",

		"64 kbps",

		"80 kbps",

		"96 kbps",

		"112 kbps",

		"128 kbps",

		"160 kbps",

		"192 kbps",

		"224 kbps",

		"256 kbps",

		"320 kbps",

		"384 kbps",

		NULL

	};

	static const char *mpeg_audio_l3_bitrate[] = {

		"32 kbps",

		"40 kbps",

		"48 kbps",

		"56 kbps",

		"64 kbps",

		"80 kbps",

		"96 kbps",

		"112 kbps",

		"128 kbps",

		"160 kbps",

		"192 kbps",

		"224 kbps",

		"256 kbps",

		"320 kbps",

		NULL

	};

	static const char *mpeg_audio_ac3_bitrate[] = {

		"32 kbps",

		"40 kbps",

		"48 kbps",

		"56 kbps",

		"64 kbps",

		"80 kbps",

		"96 kbps",

		"112 kbps",

		"128 kbps",

		"160 kbps",

		"192 kbps",

		"224 kbps",

		"256 kbps",

		"320 kbps",

		"384 kbps",

		"448 kbps",

		"512 kbps",

		"576 kbps",

		"640 kbps",

		NULL

	};

	static const char *mpeg_audio_mode[] = {

		"Stereo",

		"Joint Stereo",

		"Dual",

		"Mono",

		NULL

	};

	static const char *mpeg_audio_mode_extension[] = {

		"Bound 4",

		"Bound 8",

		"Bound 12",

		"Bound 16",

		NULL

	};

	static const char *mpeg_audio_emphasis[] = {

		"No Emphasis",

		"50/15 us",

		"CCITT J17",

		NULL

	};

	static const char *mpeg_audio_crc[] = {

		"No CRC",

		"16-bit CRC",

		NULL

	};

	static const char *mpeg_video_encoding[] = {

		"MPEG-1",

		"MPEG-2",

		"MPEG-4 AVC",

		NULL

	};

	static const char *mpeg_video_aspect[] = {

		"1x1",

		"4x3",

		"16x9",

		"2.21x1",

		NULL

	};

	static const char *mpeg_video_bitrate_mode[] = {

		"Variable Bitrate",

		"Constant Bitrate",

		NULL

	};

	static const char *mpeg_stream_type[] = {

		"MPEG-2 Program Stream",

		"MPEG-2 Transport Stream",

		"MPEG-1 System Stream",

		"MPEG-2 DVD-compatible Stream",

		"MPEG-1 VCD-compatible Stream",

		"MPEG-2 SVCD-compatible Stream",

		NULL

	};

	static const char *mpeg_stream_vbi_fmt[] = {

		"No VBI",

		"Private packet, IVTV format",

		NULL

	};

	static const char *camera_power_line_frequency[] = {

		"Disabled",

		"50 Hz",

		"60 Hz",

		NULL

	};

	static const char *camera_exposure_auto[] = {

		"Auto Mode",

		"Manual Mode",

		"Shutter Priority Mode",

		"Aperture Priority Mode",

		NULL

	};

	static const char *colorfx[] = {

		"None",

		"Black & White",

		"Sepia",

		"Negative",

		"Emboss",

		"Sketch",

		"Sky blue",

		"Grass green",

		"Skin whiten",

		"Vivid",

		NULL

	};

	static const char *tune_preemphasis[] = {

		"No preemphasis",

		"50 useconds",

		"75 useconds",

		NULL,

	};



	switch (id) {

		case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:

			return mpeg_audio_sampling_freq;

		case V4L2_CID_MPEG_AUDIO_ENCODING:

			return mpeg_audio_encoding;

		case V4L2_CID_MPEG_AUDIO_L1_BITRATE:

			return mpeg_audio_l1_bitrate;

		case V4L2_CID_MPEG_AUDIO_L2_BITRATE:

			return mpeg_audio_l2_bitrate;

		case V4L2_CID_MPEG_AUDIO_L3_BITRATE:

			return mpeg_audio_l3_bitrate;

		case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:

			return mpeg_audio_ac3_bitrate;

		case V4L2_CID_MPEG_AUDIO_MODE:

			return mpeg_audio_mode;

		case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:

			return mpeg_audio_mode_extension;

		case V4L2_CID_MPEG_AUDIO_EMPHASIS:

			return mpeg_audio_emphasis;

		case V4L2_CID_MPEG_AUDIO_CRC:

			return mpeg_audio_crc;

		case V4L2_CID_MPEG_VIDEO_ENCODING:

			return mpeg_video_encoding;

		case V4L2_CID_MPEG_VIDEO_ASPECT:

			return mpeg_video_aspect;

		case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:

			return mpeg_video_bitrate_mode;

		case V4L2_CID_MPEG_STREAM_TYPE:

			return mpeg_stream_type;

		case V4L2_CID_MPEG_STREAM_VBI_FMT:

			return mpeg_stream_vbi_fmt;

		case V4L2_CID_POWER_LINE_FREQUENCY:

			return camera_power_line_frequency;

		case V4L2_CID_EXPOSURE_AUTO:

			return camera_exposure_auto;

		case V4L2_CID_COLORFX:

			return colorfx;

		case V4L2_CID_TUNE_PREEMPHASIS:

			return tune_preemphasis;

		default:

			return NULL;

	}

}

EXPORT_SYMBOL(v4l2_ctrl_get_menu);



/* Return the control name. */

const char *v4l2_ctrl_get_name(u32 id)

{

	switch (id) {

	/* USER controls */

	case V4L2_CID_USER_CLASS: 		return "User Controls";

	case V4L2_CID_BRIGHTNESS: 		return "Brightness";

	case V4L2_CID_CONTRAST: 		return "Contrast";

	case V4L2_CID_SATURATION: 		return "Saturation";

	case V4L2_CID_HUE: 			return "Hue";

	case V4L2_CID_AUDIO_VOLUME: 		return "Volume";

	case V4L2_CID_AUDIO_BALANCE: 		return "Balance";

	case V4L2_CID_AUDIO_BASS: 		return "Bass";

	case V4L2_CID_AUDIO_TREBLE: 		return "Treble";

	case V4L2_CID_AUDIO_MUTE: 		return "Mute";

	case V4L2_CID_AUDIO_LOUDNESS: 		return "Loudness";

	case V4L2_CID_BLACK_LEVEL:		return "Black Level";

	case V4L2_CID_AUTO_WHITE_BALANCE:	return "White Balance, Automatic";

	case V4L2_CID_DO_WHITE_BALANCE:		return "Do White Balance";

	case V4L2_CID_RED_BALANCE:		return "Red Balance";

	case V4L2_CID_BLUE_BALANCE:		return "Blue Balance";

	case V4L2_CID_GAMMA:			return "Gamma";

	case V4L2_CID_EXPOSURE:			return "Exposure";

	case V4L2_CID_AUTOGAIN:			return "Gain, Automatic";

	case V4L2_CID_GAIN:			return "Gain";

	case V4L2_CID_HFLIP:			return "Horizontal Flip";

	case V4L2_CID_VFLIP:			return "Vertical Flip";

	case V4L2_CID_HCENTER:			return "Horizontal Center";

	case V4L2_CID_VCENTER:			return "Vertical Center";

	case V4L2_CID_POWER_LINE_FREQUENCY:	return "Power Line Frequency";

	case V4L2_CID_HUE_AUTO:			return "Hue, Automatic";

	case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";

	case V4L2_CID_SHARPNESS:		return "Sharpness";

	case V4L2_CID_BACKLIGHT_COMPENSATION:	return "Backlight Compensation";

	case V4L2_CID_CHROMA_AGC:		return "Chroma AGC";

	case V4L2_CID_CHROMA_GAIN:		return "Chroma Gain";

	case V4L2_CID_COLOR_KILLER:		return "Color Killer";

	case V4L2_CID_COLORFX:			return "Color Effects";

	case V4L2_CID_AUTOBRIGHTNESS:		return "Brightness, Automatic";

	case V4L2_CID_BAND_STOP_FILTER:		return "Band-Stop Filter";

	case V4L2_CID_ROTATE:			return "Rotate";

	case V4L2_CID_BG_COLOR:			return "Background Color";



	/* MPEG controls */

	case V4L2_CID_MPEG_CLASS: 		return "MPEG Encoder Controls";

	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";

	case V4L2_CID_MPEG_AUDIO_ENCODING: 	return "Audio Encoding";

	case V4L2_CID_MPEG_AUDIO_L1_BITRATE: 	return "Audio Layer I Bitrate";

	case V4L2_CID_MPEG_AUDIO_L2_BITRATE: 	return "Audio Layer II Bitrate";

	case V4L2_CID_MPEG_AUDIO_L3_BITRATE: 	return "Audio Layer III Bitrate";

	case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: 	return "Audio AAC Bitrate";

	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: 	return "Audio AC-3 Bitrate";

	case V4L2_CID_MPEG_AUDIO_MODE: 		return "Audio Stereo Mode";

	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";

	case V4L2_CID_MPEG_AUDIO_EMPHASIS: 	return "Audio Emphasis";

	case V4L2_CID_MPEG_AUDIO_CRC: 		return "Audio CRC";

	case V4L2_CID_MPEG_AUDIO_MUTE: 		return "Audio Mute";

	case V4L2_CID_MPEG_VIDEO_ENCODING: 	return "Video Encoding";

	case V4L2_CID_MPEG_VIDEO_ASPECT: 	return "Video Aspect";

	case V4L2_CID_MPEG_VIDEO_B_FRAMES: 	return "Video B Frames";

	case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 	return "Video GOP Size";

	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: 	return "Video GOP Closure";

	case V4L2_CID_MPEG_VIDEO_PULLDOWN: 	return "Video Pulldown";

	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 	return "Video Bitrate Mode";

	case V4L2_CID_MPEG_VIDEO_BITRATE: 	return "Video Bitrate";

	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: 	return "Video Peak Bitrate";

	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";

	case V4L2_CID_MPEG_VIDEO_MUTE: 		return "Video Mute";

	case V4L2_CID_MPEG_VIDEO_MUTE_YUV:	return "Video Mute YUV";

	case V4L2_CID_MPEG_STREAM_TYPE: 	return "Stream Type";

	case V4L2_CID_MPEG_STREAM_PID_PMT: 	return "Stream PMT Program ID";

	case V4L2_CID_MPEG_STREAM_PID_AUDIO: 	return "Stream Audio Program ID";

	case V4L2_CID_MPEG_STREAM_PID_VIDEO: 	return "Stream Video Program ID";

	case V4L2_CID_MPEG_STREAM_PID_PCR: 	return "Stream PCR Program ID";

	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";

	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";

	case V4L2_CID_MPEG_STREAM_VBI_FMT:	return "Stream VBI Format";



	/* CAMERA controls */

	case V4L2_CID_CAMERA_CLASS:		return "Camera Controls";

	case V4L2_CID_EXPOSURE_AUTO:		return "Auto Exposure";

	case V4L2_CID_EXPOSURE_ABSOLUTE:	return "Exposure Time, Absolute";

	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:	return "Exposure, Dynamic Framerate";

	case V4L2_CID_PAN_RELATIVE:		return "Pan, Relative";

	case V4L2_CID_TILT_RELATIVE:		return "Tilt, Relative";

	case V4L2_CID_PAN_RESET:		return "Pan, Reset";

	case V4L2_CID_TILT_RESET:		return "Tilt, Reset";

	case V4L2_CID_PAN_ABSOLUTE:		return "Pan, Absolute";

	case V4L2_CID_TILT_ABSOLUTE:		return "Tilt, Absolute";

	case V4L2_CID_FOCUS_ABSOLUTE:		return "Focus, Absolute";

	case V4L2_CID_FOCUS_RELATIVE:		return "Focus, Relative";

	case V4L2_CID_FOCUS_AUTO:		return "Focus, Automatic";

	case V4L2_CID_IRIS_ABSOLUTE:		return "Iris, Absolute";

	case V4L2_CID_IRIS_RELATIVE:		return "Iris, Relative";

	case V4L2_CID_ZOOM_ABSOLUTE:		return "Zoom, Absolute";

	case V4L2_CID_ZOOM_RELATIVE:		return "Zoom, Relative";

	case V4L2_CID_ZOOM_CONTINUOUS:		return "Zoom, Continuous";

	case V4L2_CID_PRIVACY:			return "Privacy";



	/* FM Radio Modulator control */

	case V4L2_CID_FM_TX_CLASS:		return "FM Radio Modulator Controls";

	case V4L2_CID_RDS_TX_DEVIATION:		return "RDS Signal Deviation";

	case V4L2_CID_RDS_TX_PI:		return "RDS Program ID";

	case V4L2_CID_RDS_TX_PTY:		return "RDS Program Type";

	case V4L2_CID_RDS_TX_PS_NAME:		return "RDS PS Name";

	case V4L2_CID_RDS_TX_RADIO_TEXT:	return "RDS Radio Text";

	case V4L2_CID_AUDIO_LIMITER_ENABLED:	return "Audio Limiter Feature Enabled";

	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";

	case V4L2_CID_AUDIO_LIMITER_DEVIATION:	return "Audio Limiter Deviation";

	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Feature Enabled";

	case V4L2_CID_AUDIO_COMPRESSION_GAIN:	return "Audio Compression Gain";

	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";

	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";

	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";

	case V4L2_CID_PILOT_TONE_ENABLED:	return "Pilot Tone Feature Enabled";

	case V4L2_CID_PILOT_TONE_DEVIATION:	return "Pilot Tone Deviation";

	case V4L2_CID_PILOT_TONE_FREQUENCY:	return "Pilot Tone Frequency";

	case V4L2_CID_TUNE_PREEMPHASIS:	return "Pre-emphasis settings";

	case V4L2_CID_TUNE_POWER_LEVEL:		return "Tune Power Level";

	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:	return "Tune Antenna Capacitor";



	default:

		return NULL;

	}

}

EXPORT_SYMBOL(v4l2_ctrl_get_name);



/* Fill in a struct v4l2_queryctrl */

int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)

{

	const char *name = v4l2_ctrl_get_name(qctrl->id);

	const char *name;



	v4l2_ctrl_fill(qctrl->id, &name, &qctrl->type,

		       &min, &max, &step, &def, &qctrl->flags);



	qctrl->flags = 0;

	if (name == NULL)

		return -EINVAL;



	switch (qctrl->id) {

	case V4L2_CID_AUDIO_MUTE:

	case V4L2_CID_AUDIO_LOUDNESS:

	case V4L2_CID_AUTO_WHITE_BALANCE:

	case V4L2_CID_AUTOGAIN:

	case V4L2_CID_HFLIP:

	case V4L2_CID_VFLIP:

	case V4L2_CID_HUE_AUTO:

	case V4L2_CID_CHROMA_AGC:

	case V4L2_CID_COLOR_KILLER:

	case V4L2_CID_MPEG_AUDIO_MUTE:

	case V4L2_CID_MPEG_VIDEO_MUTE:

	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:

	case V4L2_CID_MPEG_VIDEO_PULLDOWN:

	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:

	case V4L2_CID_FOCUS_AUTO:

	case V4L2_CID_PRIVACY:

	case V4L2_CID_AUDIO_LIMITER_ENABLED:

	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:

	case V4L2_CID_PILOT_TONE_ENABLED:

		qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;

		min = 0;

		max = step = 1;

		break;

	case V4L2_CID_PAN_RESET:

	case V4L2_CID_TILT_RESET:

		qctrl->type = V4L2_CTRL_TYPE_BUTTON;

		qctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;

		min = max = step = def = 0;

		break;

	case V4L2_CID_POWER_LINE_FREQUENCY:

	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:

	case V4L2_CID_MPEG_AUDIO_ENCODING:

	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:

	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:

	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:

	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:

	case V4L2_CID_MPEG_AUDIO_MODE:

	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:

	case V4L2_CID_MPEG_AUDIO_EMPHASIS:

	case V4L2_CID_MPEG_AUDIO_CRC:

	case V4L2_CID_MPEG_VIDEO_ENCODING:

	case V4L2_CID_MPEG_VIDEO_ASPECT:

	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:

	case V4L2_CID_MPEG_STREAM_TYPE:

	case V4L2_CID_MPEG_STREAM_VBI_FMT:

	case V4L2_CID_EXPOSURE_AUTO:

	case V4L2_CID_COLORFX:

	case V4L2_CID_TUNE_PREEMPHASIS:

		qctrl->type = V4L2_CTRL_TYPE_MENU;

		step = 1;

		break;

	case V4L2_CID_RDS_TX_PS_NAME:

	case V4L2_CID_RDS_TX_RADIO_TEXT:

		qctrl->type = V4L2_CTRL_TYPE_STRING;

		break;

	case V4L2_CID_USER_CLASS:

	case V4L2_CID_CAMERA_CLASS:

	case V4L2_CID_MPEG_CLASS:

	case V4L2_CID_FM_TX_CLASS:

		qctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;

		qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;

		min = max = step = def = 0;

		break;

	case V4L2_CID_BG_COLOR:

		qctrl->type = V4L2_CTRL_TYPE_INTEGER;

		step = 1;

		min = 0;

		/* Max is calculated as RGB888 that is 2^24 */

		max = 0xFFFFFF;

		break;

	default:

		qctrl->type = V4L2_CTRL_TYPE_INTEGER;

		break;

	}

	switch (qctrl->id) {

	case V4L2_CID_MPEG_AUDIO_ENCODING:

	case V4L2_CID_MPEG_AUDIO_MODE:

	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:

	case V4L2_CID_MPEG_VIDEO_B_FRAMES:

	case V4L2_CID_MPEG_STREAM_TYPE:

		qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;

		break;

	case V4L2_CID_AUDIO_VOLUME:

	case V4L2_CID_AUDIO_BALANCE:

	case V4L2_CID_AUDIO_BASS:

	case V4L2_CID_AUDIO_TREBLE:

	case V4L2_CID_BRIGHTNESS:

	case V4L2_CID_CONTRAST:

	case V4L2_CID_SATURATION:

	case V4L2_CID_HUE:

	case V4L2_CID_RED_BALANCE:

	case V4L2_CID_BLUE_BALANCE:

	case V4L2_CID_GAMMA:

	case V4L2_CID_SHARPNESS:

	case V4L2_CID_CHROMA_GAIN:

	case V4L2_CID_RDS_TX_DEVIATION:

	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:

	case V4L2_CID_AUDIO_LIMITER_DEVIATION:

	case V4L2_CID_AUDIO_COMPRESSION_GAIN:

	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:

	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:

	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:

	case V4L2_CID_PILOT_TONE_DEVIATION:

	case V4L2_CID_PILOT_TONE_FREQUENCY:

	case V4L2_CID_TUNE_POWER_LEVEL:

	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:

		qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;

		break;

	case V4L2_CID_PAN_RELATIVE:

	case V4L2_CID_TILT_RELATIVE:

	case V4L2_CID_FOCUS_RELATIVE:

	case V4L2_CID_IRIS_RELATIVE:

	case V4L2_CID_ZOOM_RELATIVE:

		qctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY;

		break;

	}

	qctrl->minimum = min;

	qctrl->maximum = max;

	qctrl->step = step;

drivers/media/video/v4l2-ctrls.c

0 → 100644
+1847 −0

File added.

Preview size limit exceeded, changes collapsed.

include/media/v4l2-ctrls.h

0 → 100644
+460 −0

File added.

Preview size limit exceeded, changes collapsed.

include/media/v4l2-dev.h

+4 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
struct v4l2_ioctl_callbacks;

struct video_device;

struct v4l2_device;

struct v4l2_ctrl_handler;



/* Flag to mark the video_device struct as registered.

   Drivers can clear this flag if they want to block all future
@@ -67,6 +68,9 @@ struct video_device 
	struct device *parent;		/* device parent */

	struct v4l2_device *v4l2_dev;	/* v4l2_device parent */



	/* Control handler associated with this device node. May be NULL. */

	struct v4l2_ctrl_handler *ctrl_handler;



	/* device info */

	char name[32];

	int vfl_type;