ALSA: hda - Revisit output_path parsing in patch_via.c

Change the order of the output-path list in a way from the DAC to the
target pin.  Also now the list include the target pin, too.

Together with this format change, simplify the arguments of
parse_output_path() function, and fix the initialization in
via_auto_init_output().

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

1 files changed, 50 insertions, 37 deletions

diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 51e7ce010543..e445a4d24778 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -81,10 +81,12 @@ enum VIA_HDA_CODEC {
          (spec)->codec_type == VT1812 ||\
          (spec)->codec_type == VT1802)
 
+#define MAX_NID_PATH_DEPTH      5
+
 struct nid_path {
         int depth;
-        hda_nid_t path[5];
-        short idx[5];
+        hda_nid_t path[MAX_NID_PATH_DEPTH];
+        short idx[MAX_NID_PATH_DEPTH];
 };
 
 struct via_spec {
@@ -415,15 +417,22 @@ static void unmute_and_select(struct hda_codec *codec, hda_nid_t nid,
                 return;
 
         /* select the route explicitly when multiple connections exist */
-        if (num_conns > 1)
+        if (num_conns > 1 &&
+            get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_AUD_MIX)
                 snd_hda_codec_write(codec, nid, 0,
                                     AC_VERB_SET_CONNECT_SEL, idx);
+
         /* unmute if the input amp is present */
-        if (!(query_amp_caps(codec, nid, HDA_INPUT) &
-              (AC_AMPCAP_NUM_STEPS | AC_AMPCAP_MUTE)))
-                return;
-        snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
-                            AMP_IN_UNMUTE(idx));
+        if (query_amp_caps(codec, nid, HDA_INPUT) &
+            (AC_AMPCAP_NUM_STEPS | AC_AMPCAP_MUTE))
+                snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
+                                    AMP_IN_UNMUTE(idx));
+
+        /* unmute the src output */
+        if (query_amp_caps(codec, src, HDA_OUTPUT) &
+            (AC_AMPCAP_NUM_STEPS | AC_AMPCAP_MUTE))
+                snd_hda_codec_write(codec, src, 0, AC_VERB_SET_AMP_GAIN_MUTE,
+                                    AMP_OUT_UNMUTE);
 
         /* unmute AA-path if present */
         if (!mix)
@@ -469,15 +478,9 @@ static void via_auto_init_output(struct hda_codec *codec, hda_nid_t pin,
         }
 
         /* initialize the output path */
-        nid = pin;
-        for (i = 0; i < path->depth; i++) {
-                unmute_and_select(codec, nid, path->idx[i], spec->aa_mix_nid);
-                nid = path->path[i];
-                if (query_amp_caps(codec, nid, HDA_OUTPUT) &
-                    (AC_AMPCAP_NUM_STEPS | AC_AMPCAP_MUTE))
-                        snd_hda_codec_write(codec, nid, 0,
-                                            AC_VERB_SET_AMP_GAIN_MUTE,
-                                            AMP_OUT_UNMUTE);
+        for (i = path->depth - 1; i > 0; i--) {
+                nid = path->path[i - 1];
+                unmute_and_select(codec, path->path[i], nid, spec->aa_mix_nid);
         }
 }
 
@@ -1544,7 +1547,7 @@ static bool is_empty_dac(struct hda_codec *codec, hda_nid_t dac)
         return true;
 }
 
-static bool parse_output_path(struct hda_codec *codec, hda_nid_t nid,
+static bool __parse_output_path(struct hda_codec *codec, hda_nid_t nid,
                               hda_nid_t target_dac, struct nid_path *path,
                               int depth, int wid_type)
 {
@@ -1556,13 +1559,13 @@ static bool parse_output_path(struct hda_codec *codec, hda_nid_t nid,
                 if (get_wcaps_type(get_wcaps(codec, conn[i])) != AC_WID_AUD_OUT)
                         continue;
                 if (conn[i] == target_dac || is_empty_dac(codec, conn[i])) {
-                        path->path[depth] = conn[i];
-                        path->idx[depth] = i;
-                        path->depth = ++depth;
+                        path->path[0] = conn[i];
+                        path->idx[0] = i;
+                        path->depth = 1;
                         return true;
                 }
         }
-        if (depth > 4)
+        if (depth >= MAX_NID_PATH_DEPTH)
                 return false;
         for (i = 0; i < nums; i++) {
                 unsigned int type;
@@ -1570,16 +1573,28 @@ static bool parse_output_path(struct hda_codec *codec, hda_nid_t nid,
                 if (type == AC_WID_AUD_OUT ||
                     (wid_type != -1 && type != wid_type))
                         continue;
-                if (parse_output_path(codec, conn[i], target_dac,
+                if (__parse_output_path(codec, conn[i], target_dac,
                                       path, depth + 1, AC_WID_AUD_SEL)) {
-                        path->path[depth] = conn[i];
-                        path->idx[depth] = i;
+                        path->path[path->depth] = conn[i];
+                        path->idx[path->depth] = i;
+                        path->depth++;
                         return true;
                 }
         }
         return false;
 }
 
+static bool parse_output_path(struct hda_codec *codec, hda_nid_t nid,
+                              hda_nid_t target_dac, struct nid_path *path)
+{
+        if (__parse_output_path(codec, nid, target_dac, path, 1, -1)) {
+                path->path[path->depth] = nid;
+                path->depth++;
+                return true;
+        }
+        return false;
+}
+
 static int via_auto_fill_dac_nids(struct hda_codec *codec)
 {
         struct via_spec *spec = codec->spec;
@@ -1593,9 +1608,8 @@ static int via_auto_fill_dac_nids(struct hda_codec *codec)
                 nid = cfg->line_out_pins[i];
                 if (!nid)
                         continue;
-                if (parse_output_path(codec, nid, 0, &spec->out_path[i], 0, -1))
-                        spec->private_dac_nids[i] =
-                                spec->out_path[i].path[spec->out_path[i].depth - 1];
+                if (parse_output_path(codec, nid, 0, &spec->out_path[i]))
+                        spec->private_dac_nids[i] = spec->out_path[i].path[0];
         }
         return 0;
 }
@@ -1748,15 +1762,14 @@ static int via_auto_create_hp_ctls(struct hda_codec *codec, hda_nid_t pin)
         if (!pin)
                 return 0;
 
-        if (parse_output_path(codec, pin, 0, &spec->hp_path, 0, -1)) {
-                spec->hp_dac_nid = spec->hp_path.path[spec->hp_path.depth - 1];
-                spec->hp_independent_mode_index =
-                        spec->hp_path.idx[spec->hp_path.depth - 1];
+        if (parse_output_path(codec, pin, 0, &spec->hp_path)) {
+                spec->hp_dac_nid = spec->hp_path.path[0];
+                spec->hp_independent_mode_index = spec->hp_path.idx[0];
                 create_hp_imux(spec);
         }
 
         if (!parse_output_path(codec, pin, spec->multiout.dac_nids[HDA_FRONT],
-                               &spec->hp_dep_path, 0, -1) &&
+                               &spec->hp_dep_path) &&
             !spec->hp_dac_nid)
                 return 0;
 
@@ -1777,14 +1790,14 @@ static int via_auto_create_speaker_ctls(struct hda_codec *codec)
         if (!spec->autocfg.speaker_outs || !pin)
                 return 0;
 
-        if (parse_output_path(codec, pin, 0, &spec->speaker_path, 0, -1)) {
-                dac = spec->speaker_path.path[spec->speaker_path.depth - 1];
+        if (parse_output_path(codec, pin, 0, &spec->speaker_path)) {
+                dac = spec->speaker_path.path[0];
                 spec->multiout.extra_out_nid[0] = dac;
                 return create_ch_ctls(codec, "Speaker", pin, dac, 3);
         }
         if (parse_output_path(codec, pin, spec->multiout.dac_nids[HDA_FRONT],
-                              &spec->speaker_path, 0, -1))
-                return create_ch_ctls(codec, "Headphone", pin, 0, 3);
+                              &spec->speaker_path))
+                return create_ch_ctls(codec, "Speaker", pin, 0, 3);
 
         return 0;
 }