ALSA: hda/conexant - Clear unsol events on unused pins

It seems that Lenovo machines (or codec chip itself?) leave the unsol
event tags and the enablement-flag from other pins bogusly even on the
unused pins.  Although this shouldn't be too critical, it's better to
clear them up sanely.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 45 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 6bbdbb6dd4e5..f3b79031fcca 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -3931,6 +3931,50 @@ static void enable_unsol_pins(struct hda_codec *codec, int num_pins,
                 snd_hda_jack_detect_enable(codec, pins[i], action);
 }
 
+static bool found_in_nid_list(hda_nid_t nid, const hda_nid_t *list, int nums)
+{
+        int i;
+        for (i = 0; i < nums; i++)
+                if (list[i] == nid)
+                        return true;
+        return false;
+}
+
+/* is the given NID found in any of autocfg items? */
+static bool found_in_autocfg(struct auto_pin_cfg *cfg, hda_nid_t nid)
+{
+        int i;
+
+        if (found_in_nid_list(nid, cfg->line_out_pins, cfg->line_outs) ||
+            found_in_nid_list(nid, cfg->hp_pins, cfg->hp_outs) ||
+            found_in_nid_list(nid, cfg->speaker_pins, cfg->speaker_outs) ||
+            found_in_nid_list(nid, cfg->dig_out_pins, cfg->dig_outs))
+                return true;
+        for (i = 0; i < cfg->num_inputs; i++)
+                if (cfg->inputs[i].pin == nid)
+                        return true;
+        if (cfg->dig_in_pin == nid)
+                return true;
+        return false;
+}
+
+/* clear unsol-event tags on unused pins; Conexant codecs seem to leave
+ * invalid unsol tags by some reason
+ */
+static void clear_unsol_on_unused_pins(struct hda_codec *codec)
+{
+        struct conexant_spec *spec = codec->spec;
+        struct auto_pin_cfg *cfg = &spec->autocfg;
+        int i;
+
+        for (i = 0; i < codec->init_pins.used; i++) {
+                struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
+                if (!found_in_autocfg(cfg, pin->nid))
+                        snd_hda_codec_write(codec, pin->nid, 0,
+                                            AC_VERB_SET_UNSOLICITED_ENABLE, 0);
+        }
+}
+
 static void cx_auto_init_output(struct hda_codec *codec)
 {
         struct conexant_spec *spec = codec->spec;
@@ -3971,6 +4015,7 @@ static void cx_auto_init_output(struct hda_codec *codec)
         /* turn on all EAPDs if no individual EAPD control is available */
         if (!spec->pin_eapd_ctrls)
                 cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, true);
+        clear_unsol_on_unused_pins(codec);
 }
 
 static void cx_auto_init_input(struct hda_codec *codec)