[ALSA] hda-codec - Fix mic input with STAC92xx codecs

Fixed mic input with STAC92xx codecs.  The mic pin was sometimes set to
OUTPUT by the headphone jack detection.
Also, try to assign a secondary mic as front-mic (or vice versa)
in the auto-detection if possible.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 60 insertions, 30 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 7cc064265204..92f48a725853 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -36,7 +36,6 @@
 
 #define NUM_CONTROL_ALLOC       32
 #define STAC_HP_EVENT           0x37
-#define STAC_UNSOL_ENABLE       (AC_USRSP_EN | STAC_HP_EVENT)
 
 #define STAC_REF                0
 #define STAC_D945GTP3           1
@@ -1164,23 +1163,28 @@ static int stac92xx_auto_create_analog_input_ctls(struct hda_codec *codec, const
         int i, j, k;
 
         for (i = 0; i < AUTO_PIN_LAST; i++) {
-                int index = -1;
-                if (cfg->input_pins[i]) {
-                        imux->items[imux->num_items].label = auto_pin_cfg_labels[i];
-
-                        for (j=0; j<spec->num_muxes; j++) {
-                                int num_cons = snd_hda_get_connections(codec, spec->mux_nids[j], con_lst, HDA_MAX_NUM_INPUTS);
-                                for (k=0; k<num_cons; k++)
-                                        if (con_lst[k] == cfg->input_pins[i]) {
-                                                index = k;
-                                                break;
-                                        }
-                                if (index >= 0)
-                                        break;
-                        }
-                        imux->items[imux->num_items].index = index;
-                        imux->num_items++;
+                int index;
+
+                if (!cfg->input_pins[i])
+                        continue;
+                index = -1;
+                for (j = 0; j < spec->num_muxes; j++) {
+                        int num_cons;
+                        num_cons = snd_hda_get_connections(codec,
+                                                           spec->mux_nids[j],
+                                                           con_lst,
+                                                           HDA_MAX_NUM_INPUTS);
+                        for (k = 0; k < num_cons; k++)
+                                if (con_lst[k] == cfg->input_pins[i]) {
+                                        index = k;
+                                        goto found;
+                                }
                 }
+                continue;
+        found:
+                imux->items[imux->num_items].label = auto_pin_cfg_labels[i];
+                imux->items[imux->num_items].index = index;
+                imux->num_items++;
         }
 
         if (imux->num_items == 1) {
@@ -1405,6 +1409,15 @@ static void stac922x_gpio_mute(struct hda_codec *codec, int pin, int muted)
                             AC_VERB_SET_GPIO_DATA, gpiostate);
 }
 
+static void enable_pin_detect(struct hda_codec *codec, hda_nid_t nid,
+                              unsigned int event)
+{
+        if (get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP)
+                snd_hda_codec_write(codec, nid, 0,
+                                    AC_VERB_SET_UNSOLICITED_ENABLE,
+                                    (AC_USRSP_EN | event));
+}
+
 static int stac92xx_init(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec = codec->spec;
@@ -1417,13 +1430,13 @@ static int stac92xx_init(struct hda_codec *codec)
         if (spec->hp_detect) {
                 /* Enable unsolicited responses on the HP widget */
                 for (i = 0; i < cfg->hp_outs; i++)
-                        if (get_wcaps(codec, cfg->hp_pins[i]) & AC_WCAP_UNSOL_CAP)
-                                snd_hda_codec_write(codec, cfg->hp_pins[i], 0,
-                                                    AC_VERB_SET_UNSOLICITED_ENABLE,
-                                                    STAC_UNSOL_ENABLE);
+                        enable_pin_detect(codec, cfg->hp_pins[i],
+                                          STAC_HP_EVENT);
                 /* fake event to set up pins */
                 codec->patch_ops.unsol_event(codec, STAC_HP_EVENT << 26);
-                /* enable the headphones by default.  If/when unsol_event detection works, this will be ignored */
+                /* enable the headphones by default.
+                 * If/when unsol_event detection works, this will be ignored
+                 */
                 stac92xx_auto_init_hp_out(codec);
         } else {
                 stac92xx_auto_init_multi_out(codec);
@@ -1478,6 +1491,8 @@ static void stac92xx_set_pinctl(struct hda_codec *codec, hda_nid_t nid,
 {
         unsigned int pin_ctl = snd_hda_codec_read(codec, nid,
                         0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0x00);
+        if (flag == AC_PINCTL_OUT_EN && (pin_ctl & AC_PINCTL_IN_EN))
+                return;
         snd_hda_codec_write(codec, nid, 0,
                         AC_VERB_SET_PIN_WIDGET_CONTROL,
                         pin_ctl | flag);
@@ -1493,21 +1508,27 @@ static void stac92xx_reset_pinctl(struct hda_codec *codec, hda_nid_t nid,
                         pin_ctl & ~flag);
 }
 
-static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res)
+static int get_pin_presence(struct hda_codec *codec, hda_nid_t nid)
+{
+        if (!nid)
+                return 0;
+        if (snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_PIN_SENSE, 0x00)
+            & (1 << 31))
+                return 1;
+        return 0;
+}
+
+static void stac92xx_hp_detect(struct hda_codec *codec, unsigned int res)
 {
         struct sigmatel_spec *spec = codec->spec;
         struct auto_pin_cfg *cfg = &spec->autocfg;
         int i, presence;
 
-        if ((res >> 26) != STAC_HP_EVENT)
-                return;
-
         presence = 0;
         for (i = 0; i < cfg->hp_outs; i++) {
-                int p = snd_hda_codec_read(codec, cfg->hp_pins[i], 0,
-                                           AC_VERB_GET_PIN_SENSE, 0x00);
-                if (p & (1 << 31))
-                        presence++;
+                presence = get_pin_presence(codec, cfg->hp_pins[i]);
+                if (presence)
+                        break;
         }
 
         if (presence) {
@@ -1535,6 +1556,15 @@ static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res)
         }
 } 
 
+static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res)
+{
+        switch (res >> 26) {
+        case STAC_HP_EVENT:
+                stac92xx_hp_detect(codec, res);
+                break;
+        }
+}
+
 #ifdef CONFIG_PM
 static int stac92xx_resume(struct hda_codec *codec)
 {