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hda: In-Amp support for 92HD7xxx codecs.

PATCH In review Matthew Ranostay 2 participants 4 messages Jan 24, 2008 – Jan 25, 2008

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#0 lore raw

PATCH 1/1 hda: In-Amp support for 92HD7xxx codecs.

Some 92HD7xxx codecs have amps on the ports to volume control and/or mute certain ports. Also this makes stac92hd71bxx unmute amps lines in the init not needed.

---

pci/hda/patch_sigmatel.c +83 -13
diff -r 5bf4c5d02f4b pci/hda/patch_sigmatel.c
@@ -577,10 +577,6 @@ static struct hda_verb stac92hd71bxx_cor
 	/* connect headphone jack to dac1 */
 	{ 0x0a, AC_VERB_SET_CONNECT_SEL, 0x01},
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 };
 
 static struct hda_verb stac92hd71bxx_analog_core_init[] = {
@@ -594,11 +590,6 @@ static struct hda_verb stac92hd71bxx_ana
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
 	/* unmute dac0 input in audio mixer */
 	{ 0x17, AC_VERB_SET_AMP_GAIN_MUTE, 0x701f},
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{}
 };
 
 static struct hda_verb stac925x_core_init[] = {
@@ -2215,6 +2206,37 @@ static int create_controls(struct sigmat
 	return 0;
 }
 
+/* add playback controls for ports that have amps */
+static int stac92xx_create_amp_ctls(struct hda_codec *codec,
+					hda_nid_t nid, char *pfx, int idx)
+{
+	struct sigmatel_spec *spec = codec->spec;
+	int err;
+	char name[48];
+	u32 caps = query_amp_caps(codec, nid, HDA_INPUT);
+	if (idx)
+		sprintf(name, "%s %d", pfx, idx);
+	else
+		strcpy(name, pfx);
+
+	if ((caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT) {
+		sprintf(name, "%s Playback Volume", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_VOL, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+
+	if ((caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT) {
+		sprintf(name, "%s Playback Switch", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_MUTE, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
 /* add playback controls from the parsed DAC table */
 static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
 					       const struct auto_pin_cfg *cfg)
@@ -2262,13 +2284,39 @@ static int stac92xx_auto_create_multi_ou
 		}
 	}
 
-	if (spec->line_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Line In as Output Switch", cfg->input_pins[AUTO_PIN_LINE] << 8)) < 0)
+	if (spec->line_switch) {
+		int val = cfg->input_pins[AUTO_PIN_LINE] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Line In as Output Switch", val);
+		if (err < 0)
 			return err;
 
-	if (spec->mic_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Mic as Output Switch", (cfg->input_pins[AUTO_PIN_MIC] << 8) | 1)) < 0)
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Line In as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	if (spec->mic_switch) {
+		int val = cfg->input_pins[AUTO_PIN_MIC] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Mic as Output Switch", val | 1);
+		if (err < 0)
 			return err;
+
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Mic as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
 
 	return 0;
 }
@@ -2311,6 +2359,13 @@ static int stac92xx_auto_create_hp_ctls(
 			spec->hp_detect = 1;
 		nid = snd_hda_codec_read(codec, cfg->hp_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->hp_pins[i],
+					"Headphone Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2320,6 +2375,14 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->speaker_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->speaker_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->speaker_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->speaker_pins[i],
+					"Speaker Gain", i);
+			if (err < 0)
+				return err;
+		}
+
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2329,6 +2392,13 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->line_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->line_out_pins[i], 0,
 					AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->line_out_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->line_out_pins[i],
+					"Line Out Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
#1 lore raw

At Thu, 24 Jan 2008 11:54:02 -0500,

Quoted 5 lines · Matthew Ranostay

Some 92HD7xxx codecs have amps on the ports to volume control and/or mute certain ports. Also this makes stac92hd71bxx unmute amps lines in the init not needed.

The patch will create more controls such as "Headphone Gain Playback Control". What would be a benifit to have both "Headphone" and "Headphone Gain" controls? I'd like to avoid redundancy if both provide a similar functionality.

Also, "Line In As Output Gain Playback Volume" is hard to understand. Let's make it simple.

thanks,

Takashi

Quoted 153 lines

---
diff -r 5bf4c5d02f4b pci/hda/patch_sigmatel.c

pci/hda/patch_sigmatel.c +83 -13
@@ -577,10 +577,6 @@ static struct hda_verb stac92hd71bxx_cor
 	/* connect headphone jack to dac1 */
 	{ 0x0a, AC_VERB_SET_CONNECT_SEL, 0x01},
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 };
 
 static struct hda_verb stac92hd71bxx_analog_core_init[] = {
@@ -594,11 +590,6 @@ static struct hda_verb stac92hd71bxx_ana
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
 	/* unmute dac0 input in audio mixer */
 	{ 0x17, AC_VERB_SET_AMP_GAIN_MUTE, 0x701f},
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{}
 };
 
 static struct hda_verb stac925x_core_init[] = {
@@ -2215,6 +2206,37 @@ static int create_controls(struct sigmat
 	return 0;
 }
 
+/* add playback controls for ports that have amps */
+static int stac92xx_create_amp_ctls(struct hda_codec *codec,
+					hda_nid_t nid, char *pfx, int idx)
+{
+	struct sigmatel_spec *spec = codec->spec;
+	int err;
+	char name[48];
+	u32 caps = query_amp_caps(codec, nid, HDA_INPUT);
+	if (idx)
+		sprintf(name, "%s %d", pfx, idx);
+	else
+		strcpy(name, pfx);
+
+	if ((caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT) {
+		sprintf(name, "%s Playback Volume", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_VOL, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+
+	if ((caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT) {
+		sprintf(name, "%s Playback Switch", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_MUTE, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
 /* add playback controls from the parsed DAC table */
 static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
 					       const struct auto_pin_cfg *cfg)
@@ -2262,13 +2284,39 @@ static int stac92xx_auto_create_multi_ou
 		}
 	}
 
-	if (spec->line_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Line In as Output Switch", cfg->input_pins[AUTO_PIN_LINE] << 8)) < 0)
+	if (spec->line_switch) {
+		int val = cfg->input_pins[AUTO_PIN_LINE] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Line In as Output Switch", val);
+		if (err < 0)
 			return err;
 
-	if (spec->mic_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Mic as Output Switch", (cfg->input_pins[AUTO_PIN_MIC] << 8) | 1)) < 0)
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Line In as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	if (spec->mic_switch) {
+		int val = cfg->input_pins[AUTO_PIN_MIC] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Mic as Output Switch", val | 1);
+		if (err < 0)
 			return err;
+
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Mic as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
 
 	return 0;
 }
@@ -2311,6 +2359,13 @@ static int stac92xx_auto_create_hp_ctls(
 			spec->hp_detect = 1;
 		nid = snd_hda_codec_read(codec, cfg->hp_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->hp_pins[i],
+					"Headphone Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2320,6 +2375,14 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->speaker_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->speaker_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->speaker_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->speaker_pins[i],
+					"Speaker Gain", i);
+			if (err < 0)
+				return err;
+		}
+
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2329,6 +2392,13 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->line_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->line_out_pins[i], 0,
 					AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->line_out_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->line_out_pins[i],
+					"Line Out Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
#2 lore raw
Quoted 5 lines · Takashi Iwai

At Thu, 24 Jan 2008 11:54:02 -0500,

Quoted 3 lines · Matthew Ranostay

Some 92HD7xxx codecs have amps on the ports to volume control and/or mute certain ports. Also this makes stac92hd71bxx unmute amps lines in the init not needed.

Quoted 7 lines
Quoted 1 line

The patch will create more controls such as "Headphone Gain Playback Control". What would be a benifit to have both "Headphone" and "Headphone Gain" controls? I'd like to avoid redundancy if both provide a similar functionality.

Well as in the 92HD71Bxxx case it would be useless, but for 92HD73xx series where we have two headphone outs which share the same DAC, you could control the gains/mutes for each HP port. Same with the line-outs and speaker outs.

Quoted 3 lines

Also, "Line In As Output Gain Playback Volume" is hard to understand. Let's make it simple.

Ok I can see your point here, "Line In As Output Gain Switch" is kinda no not needed now that I think about it(since if you switch a port to output it powers down the in-amp). As for "Line In As Output Gain Playback Volume" it could be changed to "Line In as Output Volume" so that would be part of "Line In as Output" mixer, I think that would be more clear.

Quoted 160 lines

thanks,

Takashi

Quoted 153 lines

---
diff -r 5bf4c5d02f4b pci/hda/patch_sigmatel.c

pci/hda/patch_sigmatel.c +83 -13
@@ -577,10 +577,6 @@ static struct hda_verb stac92hd71bxx_cor
 	/* connect headphone jack to dac1 */
 	{ 0x0a, AC_VERB_SET_CONNECT_SEL, 0x01},
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 };
 
 static struct hda_verb stac92hd71bxx_analog_core_init[] = {
@@ -594,11 +590,6 @@ static struct hda_verb stac92hd71bxx_ana
 	{ 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* Speaker */
 	/* unmute dac0 input in audio mixer */
 	{ 0x17, AC_VERB_SET_AMP_GAIN_MUTE, 0x701f},
-	/* unmute right and left channels for nodes 0x0a, 0xd, 0x0f */
-	{ 0x0a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{ 0x0f, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
-	{}
 };
 
 static struct hda_verb stac925x_core_init[] = {
@@ -2215,6 +2206,37 @@ static int create_controls(struct sigmat
 	return 0;
 }
 
+/* add playback controls for ports that have amps */
+static int stac92xx_create_amp_ctls(struct hda_codec *codec,
+					hda_nid_t nid, char *pfx, int idx)
+{
+	struct sigmatel_spec *spec = codec->spec;
+	int err;
+	char name[48];
+	u32 caps = query_amp_caps(codec, nid, HDA_INPUT);
+	if (idx)
+		sprintf(name, "%s %d", pfx, idx);
+	else
+		strcpy(name, pfx);
+
+	if ((caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT) {
+		sprintf(name, "%s Playback Volume", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_VOL, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+
+	if ((caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT) {
+		sprintf(name, "%s Playback Switch", name);
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_MUTE, name,
+				HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
 /* add playback controls from the parsed DAC table */
 static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
 					       const struct auto_pin_cfg *cfg)
@@ -2262,13 +2284,39 @@ static int stac92xx_auto_create_multi_ou
 		}
 	}
 
-	if (spec->line_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Line In as Output Switch", cfg->input_pins[AUTO_PIN_LINE] << 8)) < 0)
+	if (spec->line_switch) {
+		int val = cfg->input_pins[AUTO_PIN_LINE] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Line In as Output Switch", val);
+		if (err < 0)
 			return err;
 
-	if (spec->mic_switch)
-		if ((err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH, "Mic as Output Switch", (cfg->input_pins[AUTO_PIN_MIC] << 8) | 1)) < 0)
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Line In as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	if (spec->mic_switch) {
+		int val = cfg->input_pins[AUTO_PIN_MIC] << 8;
+		wid_caps = get_wcaps(codec, val >> 8);
+
+		err = stac92xx_add_control(spec, STAC_CTL_WIDGET_IO_SWITCH,
+				"Mic as Output Switch", val | 1);
+		if (err < 0)
 			return err;
+
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec, val >> 8,
+				"Mic as Output Gain", 0);
+			if (err < 0)
+				return err;
+		}
+	}
 
 	return 0;
 }
@@ -2311,6 +2359,13 @@ static int stac92xx_auto_create_hp_ctls(
 			spec->hp_detect = 1;
 		nid = snd_hda_codec_read(codec, cfg->hp_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (wid_caps & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->hp_pins[i],
+					"Headphone Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2320,6 +2375,14 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->speaker_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->speaker_pins[i], 0,
 					 AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->speaker_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->speaker_pins[i],
+					"Speaker Gain", i);
+			if (err < 0)
+				return err;
+		}
+
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
@@ -2329,6 +2392,13 @@ static int stac92xx_auto_create_hp_ctls(
 	for (i = 0; i < cfg->line_outs; i++) {
 		nid = snd_hda_codec_read(codec, cfg->line_out_pins[i], 0,
 					AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
+		if (get_wcaps(codec, cfg->line_out_pins[i]) & AC_WCAP_IN_AMP) {
+			err = stac92xx_create_amp_ctls(codec,
+					cfg->line_out_pins[i],
+					"Line Out Gain", i);
+			if (err < 0)
+				return err;
+		}
 		if (check_in_dac_nids(spec, nid))
 			nid = 0;
 		if (! nid)
#3 lore raw

At Thu, 24 Jan 2008 23:06:46 -0500,

Quoted 14 lines · Matthew Ranostay
Quoted 5 lines · Takashi Iwai

At Thu, 24 Jan 2008 11:54:02 -0500,

Quoted 3 lines · Matthew Ranostay

Some 92HD7xxx codecs have amps on the ports to volume control and/or mute certain ports. Also this makes stac92hd71bxx unmute amps lines in the init not needed.

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The patch will create more controls such as "Headphone Gain Playback Control". What would be a benifit to have both "Headphone" and "Headphone Gain" controls? I'd like to avoid redundancy if both provide a similar functionality.

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Well as in the 92HD71Bxxx case it would be useless, but for 92HD73xx series where we have
two headphone outs which share the same DAC, you could control the gains/mutes for each HP port.
Same with the line-outs and speaker outs.

It's a difficult case. We can implement all, but we should simplify in a certain level. IMHO, get rid of the current "Headphone" controls that affect both HPs, but implement two "Headphone" volumes with index (or "Headphone2" or whatever) to control individually. We have a Master volume for the total volume control.

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Also, "Line In As Output Gain Playback Volume" is hard to understand. Let's make it simple.

Ok I can see your point here, "Line In As Output Gain Switch" is kinda no not needed now that I think about it(since if you switch a port to output it powers down the in-amp).
As for "Line In As Output Gain Playback Volume" it could be changed to "Line In as Output Volume" so that would be part of "Line In as Output" mixer, I think that would be more clear.

Yes, it's better (although still a bit cryptic). Well, it's because this function is really complicated after all...

thanks,

Takashi