ALSA: HDA: Fix volume control indices for Mics (Realtek)

If more than one mic is present with different locations,
e g "Front Mic" and "Rear Mic", they can use the same index (0),
since their names are different.

Previous behavior was to have "Front Mic" as index 1, causing it
to be ignored by e g PulseAudio.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 18d53d2036a3e5b3673cc99df968d08fd12cca4e..b4f78952381a911e2cdb0ce7aa2aa906a013a7a1 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5200,7 +5200,8 @@ static int alc_auto_create_input_ctls(struct hda_codec *codec,
 {
        struct alc_spec *spec = codec->spec;
        struct hda_input_mux *imux = &spec->private_imux[0];
-       int i, err, idx, type, type_idx = 0;
+       int i, err, idx, type_idx = 0;
+       const char *prev_label = NULL;
 
        for (i = 0; i < cfg->num_inputs; i++) {
                hda_nid_t pin;
@@ -5210,12 +5211,13 @@ static int alc_auto_create_input_ctls(struct hda_codec *codec,
                if (!alc_is_input_pin(codec, pin))
                        continue;
 
-               type = cfg->inputs[i].type;
-               if (i > 0 && type == cfg->inputs[i - 1].type)
+               label = hda_get_autocfg_input_label(codec, cfg, i);
+               if (prev_label && !strcmp(label, prev_label))
                        type_idx++;
                else
                        type_idx = 0;
-               label = hda_get_autocfg_input_label(codec, cfg, i);
+               prev_label = label;
+
                if (mixer) {
                        idx = get_connection_index(codec, mixer, pin);
                        if (idx >= 0) {
@@ -10819,25 +10821,30 @@ static int alc_auto_add_mic_boost(struct hda_codec *codec)
 {
        struct alc_spec *spec = codec->spec;
        struct auto_pin_cfg *cfg = &spec->autocfg;
-       int i, err, type;
+       int i, err;
        int type_idx = 0;
        hda_nid_t nid;
+       const char *prev_label = NULL;
 
        for (i = 0; i < cfg->num_inputs; i++) {
                if (cfg->inputs[i].type > AUTO_PIN_MIC)
                        break;
                nid = cfg->inputs[i].pin;
                if (get_wcaps(codec, nid) & AC_WCAP_IN_AMP) {
-                       char label[32];
-                       type = cfg->inputs[i].type;
-                       if (i > 0 && type == cfg->inputs[i - 1].type)
+                       const char *label;
+                       char boost_label[32];
+
+                       label = hda_get_autocfg_input_label(codec, cfg, i);
+                       if (prev_label && !strcmp(label, prev_label))
                                type_idx++;
                        else
                                type_idx = 0;
-                       snprintf(label, sizeof(label), "%s Boost Volume",
-                                hda_get_autocfg_input_label(codec, cfg, i));
-                       err = add_control(spec, ALC_CTL_WIDGET_VOL, label,
-                                         type_idx,
+                       prev_label = label;
+
+                       snprintf(boost_label, sizeof(boost_label),
+                                "%s Boost Volume", label);
+                       err = add_control(spec, ALC_CTL_WIDGET_VOL,
+                                         boost_label, type_idx,
                                  HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_INPUT));
                        if (err < 0)
                                return err;