V4L/DVB (12549): v4l2: video device: Add FM TX controls default configurations

This patch adds basic configurations for FM TX extended controls.
That includes controls names, menu strings, pointer identification,
type classification and flags configuration.
Signed-off-by: NEduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/v4l2-common.c

@@ -342,6 +342,12 @@ const char **v4l2_ctrl_get_menu(u32 id)
 		"Sepia",
 		NULL
 	};
+	static const char *tune_preemphasis[] = {
+		"No preemphasis",
+		"50 useconds",
+		"75 useconds",
+		NULL,
+	};
 
 	switch (id) {
 		case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
@@ -380,6 +386,8 @@ const char **v4l2_ctrl_get_menu(u32 id)
 			return camera_exposure_auto;
 		case V4L2_CID_COLORFX:
 			return colorfx;
+		case V4L2_CID_TUNE_PREEMPHASIS:
+			return tune_preemphasis;
 		default:
 			return NULL;
 	}
@@ -478,6 +486,28 @@ const char *v4l2_ctrl_get_name(u32 id)
 	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;
 	}
@@ -510,6 +540,9 @@ int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 ste
 	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;
@@ -538,12 +571,18 @@ int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 ste
 	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;
@@ -572,6 +611,17 @@ int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 ste
 	case V4L2_CID_BLUE_BALANCE:
 	case V4L2_CID_GAMMA:
 	case V4L2_CID_SHARPNESS:
+	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:

drivers/media/video/v4l2-compat-ioctl32.c

@@ -616,14 +616,16 @@ struct v4l2_ext_control32 {
    for now this will do. */
 
 /* Return non-zero if this control is a pointer type. Currently only
- * type STRING is a pointer type.
- *
- * Note that there are currently no controls of this type, but at least the
- * compat32 code is in place to properly handle such controls. Please
- * remove this note once the first pointer controls are added. */
+   type STRING is a pointer type. */
 static inline int ctrl_is_pointer(u32 id)
 {
-	return 0;
+	switch (id) {
+	case V4L2_CID_RDS_TX_PS_NAME:
+	case V4L2_CID_RDS_TX_RADIO_TEXT:
+		return 1;
+	default:
+		return 0;
+	}
 }
 
 static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)