V4L/DVB (3324): msp3400 audio handling bug fixes.

- Check capabilities for audio settings (volume, balance,
bass, treble, loudness, mute)
- added loudness support
- added missing VIDEO_AUDIO_BALANCE flags for v4l1 compatibility
- do not call msp_any_detect_stereo for non-autoselect chips to
retrieve the current stereo setting: that will temporarily mute
the sound. It is only needed when the stereo mode might be
changed, and for autoselect msp processors that do not periodically
need to update their stereo setting.
- do not wake up the thread if the standard did not change. Prevents
temporary audio drop-out if the standard is set to the same value.
- fix confused stereo detect code where V4L2_TUNER_SUB_STEREO and
V4L2_TUNER_MODE_STEREO values were used incorrectly.
- stereo mode reporting was broken (v4l2 value used to index a
string array expecting v4l1 mode values).
- do not set dsp register 0x30 in the 3410d thread: that register
does not exist for pre-'G' revision msp chips.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

Author: hverkuil

drivers/media/video/msp3400-driver.c

@@ -283,33 +283,57 @@ void msp_set_scart(struct i2c_client *client, int in, int out)
 
 void msp_set_mute(struct i2c_client *client)
 {
+	struct msp_state *state = i2c_get_clientdata(client);
+
 	v4l_dbg(1, client, "mute audio\n");
-	msp_write_dsp(client, 0x0000, 0); /* loudspeaker */
-	msp_write_dsp(client, 0x0006, 0); /* headphones */
+	msp_write_dsp(client, 0x0000, 0);
+	msp_write_dsp(client, 0x0007, 1);
+	if (state->has_scart2_out_volume)
+		msp_write_dsp(client, 0x0040, 1);
+	if (state->has_headphones)
+		msp_write_dsp(client, 0x0006, 0);
 }
 
 void msp_set_audio(struct i2c_client *client)
 {
 	struct msp_state *state = i2c_get_clientdata(client);
-	int val = 0, bal = 0, bass, treble;
+	int bal = 0, bass, treble, loudness;
+	int val = 0;
 
 	if (!state->muted)
 		val = (state->volume * 0x7f / 65535) << 8;
+
+	v4l_dbg(1, client, "mute=%s volume=%d\n",
+		state->muted ? "on" : "off", state->volume);
+
+	msp_write_dsp(client, 0x0000, val);
+	msp_write_dsp(client, 0x0007, state->muted ? 0x1 : (val | 0x1));
+	if (state->has_scart2_out_volume)
+		msp_write_dsp(client, 0x0040, state->muted ? 0x1 : (val | 0x1));
+	if (state->has_headphones)
+		msp_write_dsp(client, 0x0006, val);
+	if (!state->has_sound_processing)
+		return;
+
 	if (val)
-		bal = (state->balance / 256) - 128;
+		bal = (u8)((state->balance / 256) - 128);
 	bass = ((state->bass - 32768) * 0x60 / 65535) << 8;
 	treble = ((state->treble - 32768) * 0x60 / 65535) << 8;
+	loudness = state->loudness ? ((5 * 4) << 8) : 0;
 
-	v4l_dbg(1, client, "mute=%s volume=%d balance=%d bass=%d treble=%d\n",
-		state->muted ? "on" : "off", state->volume, state->balance,
-		state->bass, state->treble);
+	v4l_dbg(1, client, "balance=%d bass=%d treble=%d loudness=%d\n",
+		state->balance, state->bass, state->treble, state->loudness);
 
-	msp_write_dsp(client, 0x0000, val); /* loudspeaker */
-	msp_write_dsp(client, 0x0006, val); /* headphones */
-	msp_write_dsp(client, 0x0007, state->muted ? 0x1 : (val | 0x1));
 	msp_write_dsp(client, 0x0001, bal << 8);
-	msp_write_dsp(client, 0x0002, bass); /* loudspeaker */
-	msp_write_dsp(client, 0x0003, treble); /* loudspeaker */
+	msp_write_dsp(client, 0x0002, bass);
+	msp_write_dsp(client, 0x0003, treble);
+	msp_write_dsp(client, 0x0004, loudness);
+	if (!state->has_headphones)
+		return;
+	msp_write_dsp(client, 0x0030, bal << 8);
+	msp_write_dsp(client, 0x0031, bass);
+	msp_write_dsp(client, 0x0032, treble);
+	msp_write_dsp(client, 0x0033, loudness);
 }
 
 int msp_modus(struct i2c_client *client)
@@ -421,7 +445,7 @@ static void msp_any_detect_stereo(struct i2c_client *client)
 	}
 }
 
-static struct v4l2_queryctrl msp_qctrl[] = {
+static struct v4l2_queryctrl msp_qctrl_std[] = {
 	{
 		.id            = V4L2_CID_AUDIO_VOLUME,
 		.name          = "Volume",
@@ -431,15 +455,6 @@ static struct v4l2_queryctrl msp_qctrl[] = {
 		.default_value = 58880,
 		.flags         = 0,
 		.type          = V4L2_CTRL_TYPE_INTEGER,
-	},{
-		.id            = V4L2_CID_AUDIO_BALANCE,
-		.name          = "Balance",
-		.minimum       = 0,
-		.maximum       = 65535,
-		.step          = 65535/100,
-		.default_value = 32768,
-		.flags         = 0,
-		.type          = V4L2_CTRL_TYPE_INTEGER,
 	},{
 		.id            = V4L2_CID_AUDIO_MUTE,
 		.name          = "Mute",
@@ -449,6 +464,19 @@ static struct v4l2_queryctrl msp_qctrl[] = {
 		.default_value = 1,
 		.flags         = 0,
 		.type          = V4L2_CTRL_TYPE_BOOLEAN,
+	},
+};
+
+static struct v4l2_queryctrl msp_qctrl_sound_processing[] = {
+	{
+		.id            = V4L2_CID_AUDIO_BALANCE,
+		.name          = "Balance",
+		.minimum       = 0,
+		.maximum       = 65535,
+		.step          = 65535/100,
+		.default_value = 32768,
+		.flags         = 0,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
 	},{
 		.id            = V4L2_CID_AUDIO_BASS,
 		.name          = "Bass",
@@ -465,6 +493,15 @@ static struct v4l2_queryctrl msp_qctrl[] = {
 		.step          = 65535/100,
 		.default_value = 32768,
 		.type          = V4L2_CTRL_TYPE_INTEGER,
+	},{
+		.id            = V4L2_CID_AUDIO_LOUDNESS,
+		.name          = "Loudness",
+		.minimum       = 0,
+		.maximum       = 1,
+		.step          = 1,
+		.default_value = 1,
+		.flags         = 0,
+		.type          = V4L2_CTRL_TYPE_BOOLEAN,
 	},
 };
 
@@ -490,24 +527,36 @@ static int msp_get_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 	struct msp_state *state = i2c_get_clientdata(client);
 
 	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_VOLUME:
+		ctrl->value = state->volume;
+		break;
+
 	case V4L2_CID_AUDIO_MUTE:
 		ctrl->value = state->muted;
 		break;
 
 	case V4L2_CID_AUDIO_BALANCE:
+		if (!state->has_sound_processing)
+			return -EINVAL;
 		ctrl->value = state->balance;
 		break;
 
 	case V4L2_CID_AUDIO_BASS:
+		if (!state->has_sound_processing)
+			return -EINVAL;
 		ctrl->value = state->bass;
 		break;
 
 	case V4L2_CID_AUDIO_TREBLE:
+		if (!state->has_sound_processing)
+			return -EINVAL;
 		ctrl->value = state->treble;
 		break;
 
-	case V4L2_CID_AUDIO_VOLUME:
-		ctrl->value = state->volume;
+	case V4L2_CID_AUDIO_LOUDNESS:
+		if (!state->has_sound_processing)
+			return -EINVAL;
+		ctrl->value = state->loudness;
 		break;
 
 	default:
@@ -521,28 +570,40 @@ static int msp_set_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
 	struct msp_state *state = i2c_get_clientdata(client);
 
 	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_VOLUME:
+		state->volume = ctrl->value;
+		if (state->volume == 0)
+			state->balance = 32768;
+		break;
+
 	case V4L2_CID_AUDIO_MUTE:
 		if (ctrl->value < 0 || ctrl->value >= 2)
 			return -ERANGE;
 		state->muted = ctrl->value;
 		break;
 
 	case V4L2_CID_AUDIO_BASS:
+		if (!state->has_sound_processing)
+			return -EINVAL;
 		state->bass = ctrl->value;
 		break;
 
 	case V4L2_CID_AUDIO_TREBLE:
+		if (!state->has_sound_processing)
+			return -EINVAL;
 		state->treble = ctrl->value;
 		break;
 
-	case V4L2_CID_AUDIO_BALANCE:
-		state->balance = ctrl->value;
+	case V4L2_CID_AUDIO_LOUDNESS:
+		if (!state->has_sound_processing)
+			return -EINVAL;
+		state->loudness = ctrl->value;
 		break;
 
-	case V4L2_CID_AUDIO_VOLUME:
-		state->volume = ctrl->value;
-		if (state->volume == 0)
-			state->balance = 32768;
+	case V4L2_CID_AUDIO_BALANCE:
+		if (!state->has_sound_processing)
+			return -EINVAL;
+		state->balance = ctrl->value;
 		break;
 
 	default:
@@ -628,21 +689,20 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 	{
 		struct video_audio *va = arg;
 
-		va->flags |= VIDEO_AUDIO_VOLUME |
-			VIDEO_AUDIO_BASS |
-			VIDEO_AUDIO_TREBLE |
-			VIDEO_AUDIO_MUTABLE;
-		if (state->muted)
-			va->flags |= VIDEO_AUDIO_MUTE;
-
+		va->flags |= VIDEO_AUDIO_VOLUME | VIDEO_AUDIO_MUTABLE;
+		if (state->has_sound_processing)
+			va->flags |= VIDEO_AUDIO_BALANCE |
+				VIDEO_AUDIO_BASS |
+				VIDEO_AUDIO_TREBLE;
 		if (state->muted)
 			va->flags |= VIDEO_AUDIO_MUTE;
 		va->volume = state->volume;
 		va->balance = state->volume ? state->balance : 32768;
 		va->bass = state->bass;
 		va->treble = state->treble;
 
-		msp_any_detect_stereo(client);
+		if (state->opmode == OPMODE_AUTOSELECT)
+			msp_any_detect_stereo(client);
 		va->mode = msp_mode_v4l2_to_v4l1(state->rxsubchans);
 		break;
 	}
@@ -666,15 +726,24 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 	case VIDIOCSCHAN:
 	{
 		struct video_channel *vc = arg;
+		int update = 0;
+		v4l2_std_id std;
 
+		if (state->radio)
+			update = 1;
 		state->radio = 0;
 		if (vc->norm == VIDEO_MODE_PAL)
-			state->std = V4L2_STD_PAL;
+			std = V4L2_STD_PAL;
 		else if (vc->norm == VIDEO_MODE_SECAM)
-			state->std = V4L2_STD_SECAM;
+			std = V4L2_STD_SECAM;
 		else
-			state->std = V4L2_STD_NTSC;
-		msp_wake_thread(client);
+			std = V4L2_STD_NTSC;
+		if (std != state->std) {
+			state->std = std;
+			update = 1;
+		}
+		if (update)
+			msp_wake_thread(client);
 		break;
 	}
 
@@ -699,10 +768,12 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 	case VIDIOC_S_STD:
 	{
 		v4l2_std_id *id = arg;
+		int update = state->radio || state->std != *id;
 
 		state->std = *id;
 		state->radio = 0;
-		msp_wake_thread(client);
+		if (update)
+			msp_wake_thread(client);
 		return 0;
 	}
 
@@ -808,7 +879,8 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 	{
 		struct v4l2_tuner *vt = arg;
 
-		msp_any_detect_stereo(client);
+		if (state->opmode == OPMODE_AUTOSELECT)
+			msp_any_detect_stereo(client);
 		vt->audmode    = state->audmode;
 		vt->rxsubchans = state->rxsubchans;
 		vt->capability = V4L2_TUNER_CAP_STEREO |
@@ -887,9 +959,16 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 		struct v4l2_queryctrl *qc = arg;
 		int i;
 
-		for (i = 0; i < ARRAY_SIZE(msp_qctrl); i++)
-			if (qc->id && qc->id == msp_qctrl[i].id) {
-				memcpy(qc, &msp_qctrl[i], sizeof(*qc));
+		for (i = 0; i < ARRAY_SIZE(msp_qctrl_std); i++)
+			if (qc->id && qc->id == msp_qctrl_std[i].id) {
+				memcpy(qc, &msp_qctrl_std[i], sizeof(*qc));
+				return 0;
+			}
+		if (!state->has_sound_processing)
+			return -EINVAL;
+		for (i = 0; i < ARRAY_SIZE(msp_qctrl_sound_processing); i++)
+			if (qc->id && qc->id == msp_qctrl_sound_processing[i].id) {
+				memcpy(qc, &msp_qctrl_sound_processing[i], sizeof(*qc));
 				return 0;
 			}
 		return -EINVAL;
@@ -902,13 +981,17 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 		return msp_set_ctrl(client, arg);
 
 	case VIDIOC_LOG_STATUS:
-		msp_any_detect_stereo(client);
+		if (state->opmode == OPMODE_AUTOSELECT)
+			msp_any_detect_stereo(client);
 		v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
 				client->name, state->rev1, state->rev2);
-		v4l_info(client, "Audio:  volume %d balance %d bass %d treble %d%s\n",
-				state->volume, state->balance,
-				state->bass, state->treble,
-				state->muted ? " (muted)" : "");
+		v4l_info(client, "Audio:  volume %d%s\n",
+				state->volume, state->muted ? " (muted)" : "");
+		if (state->has_sound_processing) {
+			v4l_info(client, "Audio:  balance %d bass %d treble %d loudness %s\n",
+					state->balance, state->bass, state->treble,
+					state->loudness ? "on" : "off");
+		}
 		v4l_info(client, "Mode:   %s (%s%s)\n", msp_standard_mode_name(state->mode),
 			(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
 			(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
@@ -983,6 +1066,7 @@ static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
 	state->balance = 32768;	/* 0db gain */
 	state->bass = 32768;
 	state->treble = 32768;
+	state->loudness = 0;
 	state->input = -1;
 	state->muted = 0;
 	state->i2s_mode = 0;
@@ -1023,6 +1107,8 @@ static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
 	/* Has scart2 and scart3 inputs and scart2 output: not in stripped
 	   down products of the '3' family */
 	state->has_scart23_in_scart2_out = msp_family >= 4 || msp_prod_lo < 5;
+	/* Has scart2 a volume control? Not in pre-D revisions. */
+	state->has_scart2_out_volume = msp_revision > 'C' && state->has_scart23_in_scart2_out;
 	/* Has subwoofer output: not in pre-D revs and not in stripped down products */
 	state->has_subwoofer = msp_revision >= 'D' && msp_prod_lo < 5;
 	/* Has soundprocessing (bass/treble/balance/loudness/equalizer): not in