ALSA: hda - More Aspire 8930G fixes

Enable all three capture channels, including the missing nid 7 which is
the only one capable of capturing DMIC input

Enable Headphone amp for the HP jack. This causes a volume boost for
headphones, but does not cause any noticeable effect for light loads
like other amps, so there is no need to make it configurable.

Add Input Mix capture mux setting to capture the output of the playback
input mux (that is, what goes out the speakers except for PCM)

Hack another coef register because the stereo DMIC for some reason
produces a nonstandard sum/difference signal. I found a bit to make it
just use the sum signal for both channels, which makes it behave like a
standard mono microphone. The stereo is useless anyway (they're 1cm apart).

Tested working: Three capture channels, mic in, line in, DMIC.

Tested not working: CD. Not sure why, might be unconnected in the actual
hardware or a CD drive issue.

Also looked at SPDIF. It appears to work (emitter lights up inside the
HP out jack) but I lack a proper miniTOSLINK cable to test it.
Signed-off-by: Hector Martin <hector@marcansoft.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -1469,10 +1469,10 @@ static struct hda_verb alc888_acer_aspire_4930g_verbs[] = {
 };
 
 /*
- * ALC888 Acer Aspire 8930G model
+ * ALC889 Acer Aspire 8930G model
  */
 
-static struct hda_verb alc888_acer_aspire_8930g_verbs[] = {
+static struct hda_verb alc889_acer_aspire_8930g_verbs[] = {
 /* Front Mic: set to PIN_IN (empty by default) */
 	{0x12, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
 /* Unselect Front Mic by default in input mixer 3 */
@@ -1492,7 +1492,7 @@ static struct hda_verb alc888_acer_aspire_8930g_verbs[] = {
 	{0x16, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
 	{0x16, AC_VERB_SET_CONNECT_SEL, 0x02},
 /* Connect HP out to Front */
-	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | PIN_HP},
 	{0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
 	{0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
 /* Enable all DACs */
@@ -1507,6 +1507,17 @@ static struct hda_verb alc888_acer_aspire_8930g_verbs[] = {
 /* Enable amplifiers */
 	{0x14, AC_VERB_SET_EAPD_BTLENABLE, 0x02},
 	{0x15, AC_VERB_SET_EAPD_BTLENABLE, 0x02},
+/* DMIC fix
+ * This laptop has a stereo digital microphone. The mics are only 1cm apart
+ * which makes the stereo useless. However, either the mic or the ALC889
+ * makes the signal become a difference/sum signal instead of standard
+ * stereo, which is annoying. So instead we flip this bit which makes the
+ * codec replicate the sum signal to both channels, turning it into a
+ * normal mono mic.
+ */
+/*  DMIC_CONTROL? Init value = 0x0001 */
+	{0x20, AC_VERB_SET_COEF_INDEX, 0x0b},
+	{0x20, AC_VERB_SET_PROC_COEF, 0x0003},
 	{ }
 };
 
@@ -1531,6 +1542,38 @@ static struct hda_input_mux alc888_2_capture_sources[2] = {
 	}
 };
 
+static struct hda_input_mux alc889_capture_sources[3] = {
+	/* Digital mic only available on first "ADC" */
+	{
+		.num_items = 5,
+		.items = {
+			{ "Mic", 0x0 },
+			{ "Line", 0x2 },
+			{ "CD", 0x4 },
+			{ "Front Mic", 0xb },
+			{ "Input Mix", 0xa },
+		},
+	},
+	{
+		.num_items = 4,
+		.items = {
+			{ "Mic", 0x0 },
+			{ "Line", 0x2 },
+			{ "CD", 0x4 },
+			{ "Input Mix", 0xa },
+		},
+	},
+	{
+		.num_items = 4,
+		.items = {
+			{ "Mic", 0x0 },
+			{ "Line", 0x2 },
+			{ "CD", 0x4 },
+			{ "Input Mix", 0xa },
+		},
+	}
+};
+
 static struct snd_kcontrol_new alc888_base_mixer[] = {
 	HDA_CODEC_VOLUME("Front Playback Volume", 0x0c, 0x0, HDA_OUTPUT),
 	HDA_BIND_MUTE("Front Playback Switch", 0x0c, 2, HDA_INPUT),
@@ -1562,7 +1605,7 @@ static void alc888_acer_aspire_4930g_init_hook(struct hda_codec *codec)
 	alc_automute_amp(codec);
 }
 
-static void alc888_acer_aspire_8930g_init_hook(struct hda_codec *codec)
+static void alc889_acer_aspire_8930g_init_hook(struct hda_codec *codec)
 {
 	struct alc_spec *spec = codec->spec;
 
@@ -9081,22 +9124,22 @@ static struct alc_config_preset alc883_presets[] = {
 		.mixers = { alc888_base_mixer,
 				alc883_chmode_mixer },
 		.init_verbs = { alc883_init_verbs, alc880_gpio1_init_verbs,
-				alc888_acer_aspire_8930g_verbs },
+				alc889_acer_aspire_8930g_verbs },
 		.num_dacs = ARRAY_SIZE(alc883_dac_nids),
 		.dac_nids = alc883_dac_nids,
-		.num_adc_nids = ARRAY_SIZE(alc883_adc_nids_rev),
-		.adc_nids = alc883_adc_nids_rev,
-		.capsrc_nids = alc883_capsrc_nids_rev,
+		.num_adc_nids = ARRAY_SIZE(alc889_adc_nids),
+		.adc_nids = alc889_adc_nids,
+		.capsrc_nids = alc889_capsrc_nids,
 		.dig_out_nid = ALC883_DIGOUT_NID,
 		.num_channel_mode = ARRAY_SIZE(alc883_3ST_6ch_modes),
 		.channel_mode = alc883_3ST_6ch_modes,
 		.need_dac_fix = 1,
 		.const_channel_count = 6,
 		.num_mux_defs =
-			ARRAY_SIZE(alc888_2_capture_sources),
-		.input_mux = alc888_2_capture_sources,
+			ARRAY_SIZE(alc889_capture_sources),
+		.input_mux = alc889_capture_sources,
 		.unsol_event = alc_automute_amp_unsol_event,
-		.init_hook = alc888_acer_aspire_8930g_init_hook,
+		.init_hook = alc889_acer_aspire_8930g_init_hook,
 	},
 	[ALC883_MEDION] = {
 		.mixers = { alc883_fivestack_mixer,