ALSA: hda - Give standard "Bass Speaker" mixer for 2.1 speakers

When two built-in speakers are found on the machine, we can suppose
it's rather a 2.1 speaker system with a bass output instead of
front/surround channels.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_cirrus.c

@@ -68,6 +68,7 @@ struct cs_spec {
 
 	unsigned int hp_detect:1;
 	unsigned int mic_detect:1;
+	unsigned int speaker_2_1:1;
 	/* CS421x */
 	unsigned int spdif_detect:1;
 	unsigned int sense_b:1;
@@ -443,6 +444,9 @@ static int parse_output(struct hda_codec *codec)
 	spec->multiout.dac_nids = spec->dac_nid;
 	spec->multiout.max_channels = i * 2;
 
+	if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT && i == 2)
+		spec->speaker_2_1 = 1; /* assume 2.1 speakers */
+
 	/* add HP and speakers */
 	extra_nids = 0;
 	for (i = 0; i < cfg->hp_outs; i++) {
@@ -632,7 +636,9 @@ static int add_output(struct hda_codec *codec, hda_nid_t dac, int idx,
 		index = idx;
 		break;
 	case AUTO_PIN_SPEAKER_OUT:
-		if (num_ctls > 1)
+		if (spec->speaker_2_1)
+			name = idx ? "Bass Speaker" : "Speaker";
+		else if (num_ctls > 1)
 			name = speakers[idx];
 		else
 			name = "Speaker";

sound/pci/hda/patch_conexant.c

@@ -472,7 +472,7 @@ static const struct snd_kcontrol_new cxt_beep_mixer[] = {
 #endif
 
 static const char * const slave_pfxs[] = {
-	"Headphone", "Speaker", "Front", "Surround", "CLFE",
+	"Headphone", "Speaker", "Bass Speaker", "Front", "Surround", "CLFE",
 	NULL
 };
 
@@ -4116,11 +4116,26 @@ static int try_add_pb_volume(struct hda_codec *codec, hda_nid_t dac,
 	return 0;
 }
 
+static bool is_2_1_speaker(struct conexant_spec *spec)
+{
+	int i, type, num_spk = 0;
+
+	for (i = 0; i < spec->dac_info_filled; i++) {
+		type = spec->dac_info[i].type;
+		if (type == AUTO_PIN_LINE_OUT)
+			type = spec->autocfg.line_out_type;
+		if (type == AUTO_PIN_SPEAKER_OUT)
+			num_spk++;
+	}
+	return (num_spk == 2 && spec->autocfg.line_out_type != AUTO_PIN_LINE_OUT);
+}
+
 static int cx_auto_build_output_controls(struct hda_codec *codec)
 {
 	struct conexant_spec *spec = codec->spec;
 	int i, err;
 	int num_line = 0, num_hp = 0, num_spk = 0;
+	bool speaker_2_1;
 	static const char * const texts[3] = { "Front", "Surround", "CLFE" };
 
 	if (spec->dac_info_filled == 1)
@@ -4128,6 +4143,8 @@ static int cx_auto_build_output_controls(struct hda_codec *codec)
 					 spec->dac_info[0].pin,
 					 "Master", 0);
 
+	speaker_2_1 = is_2_1_speaker(spec);
+
 	for (i = 0; i < spec->dac_info_filled; i++) {
 		const char *label;
 		int idx, type;
@@ -4146,8 +4163,13 @@ static int cx_auto_build_output_controls(struct hda_codec *codec)
 			idx = num_hp++;
 			break;
 		case AUTO_PIN_SPEAKER_OUT:
-			label = "Speaker";
-			idx = num_spk++;
+			if (speaker_2_1) {
+				label = num_spk++ ? "Bass Speaker" : "Speaker";
+				idx = 0;
+			} else {
+				label = "Speaker";
+				idx = num_spk++;
+			}
 			break;
 		}
 		err = try_add_pb_volume(codec, dac,

sound/pci/hda/patch_sigmatel.c

@@ -1081,7 +1081,7 @@ static struct snd_kcontrol_new stac_smux_mixer = {
 
 static const char * const slave_pfxs[] = {
 	"Front", "Surround", "Center", "LFE", "Side",
-	"Headphone", "Speaker", "IEC958", "PCM",
+	"Headphone", "Speaker", "Bass Speaker", "IEC958", "PCM",
 	NULL
 };
 
@@ -3269,9 +3269,9 @@ static int create_multi_out_ctls(struct hda_codec *codec, int num_outs,
 				idx = i;
 				break;
 			case AUTO_PIN_SPEAKER_OUT:
-				if (num_outs <= 1) {
-					name = "Speaker";
-					idx = i;
+				if (num_outs <= 2) {
+					name = i ? "Bass Speaker" : "Speaker";
+					idx = 0;
 					break;
 				}
 				/* Fall through in case of multi speaker outs */

sound/pci/hda/patch_via.c

@@ -1454,7 +1454,7 @@ static const struct hda_pcm_stream via_pcm_digital_capture = {
  */
 static const char * const via_slave_pfxs[] = {
 	"Front", "Surround", "Center", "LFE", "Side",
-	"Headphone", "Speaker",
+	"Headphone", "Speaker", "Bass Speaker",
 	NULL,
 };
 
@@ -1969,8 +1969,8 @@ static int via_auto_create_multi_out_ctls(struct hda_codec *codec)
 		} else {
 			const char *pfx = chname[i];
 			if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT &&
-			    cfg->line_outs == 1)
-				pfx = "Speaker";
+			    cfg->line_outs <= 2)
+				pfx = i ? "Bass Speaker" : "Speaker";
 			err = create_ch_ctls(codec, pfx, 3, true, path);
 			if (err < 0)
 				return err;