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| author | Takashi Iwai <tiwai@suse.de> | 2013-01-04 13:19:55 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-01-12 08:43:31 +0100 |
| commit | f5172a7ed966493414aa58319fbb7ab0a80cf889 (patch) | |
| tree | 0e22c823df8271bc93a0f55674c0f350c09bf4b3 /sound | |
| parent | 1e0b528696edf20ad38f494dda49c6195bee1b7f (diff) | |
| download | linux-3.10-f5172a7ed966493414aa58319fbb7ab0a80cf889.tar.gz linux-3.10-f5172a7ed966493414aa58319fbb7ab0a80cf889.tar.bz2 linux-3.10-f5172a7ed966493414aa58319fbb7ab0a80cf889.zip | |
ALSA: hda - Check the existing path in snd_hda_add_new_path()
If the requested path has been already added, return the existing path
instance instead of adding a duplicated instance.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/hda_generic.c | 31 | ||||
| -rw-r--r-- | sound/pci/hda/hda_generic.h | 1 |
2 files changed, 25 insertions, 7 deletions
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index ee2c973f912..f9ecbe09a52 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -116,11 +116,9 @@ EXPORT_SYMBOL_HDA(snd_hda_gen_spec_free); * parsing paths */ -/* get the path between the given NIDs; - * passing 0 to either @pin or @dac behaves as a wildcard - */ -struct nid_path *snd_hda_get_nid_path(struct hda_codec *codec, - hda_nid_t from_nid, hda_nid_t to_nid) +static struct nid_path *get_nid_path(struct hda_codec *codec, + hda_nid_t from_nid, hda_nid_t to_nid, + int with_aa_mix) { struct hda_gen_spec *spec = codec->spec; int i; @@ -130,11 +128,23 @@ struct nid_path *snd_hda_get_nid_path(struct hda_codec *codec, if (path->depth <= 0) continue; if ((!from_nid || path->path[0] == from_nid) && - (!to_nid || path->path[path->depth - 1] == to_nid)) - return path; + (!to_nid || path->path[path->depth - 1] == to_nid)) { + if (with_aa_mix == HDA_PARSE_ALL || + path->with_aa_mix == with_aa_mix) + return path; + } } return NULL; } + +/* get the path between the given NIDs; + * passing 0 to either @pin or @dac behaves as a wildcard + */ +struct nid_path *snd_hda_get_nid_path(struct hda_codec *codec, + hda_nid_t from_nid, hda_nid_t to_nid) +{ + return get_nid_path(codec, from_nid, to_nid, HDA_PARSE_ALL); +} EXPORT_SYMBOL_HDA(snd_hda_get_nid_path); /* check whether the given DAC is already found in any existing paths */ @@ -248,6 +258,8 @@ static bool __parse_nid_path(struct hda_codec *codec, found: path->path[path->depth] = conn[i]; + if (conn[i] == spec->mixer_nid) + path->with_aa_mix = true; path->idx[path->depth + 1] = i; if (nums > 1 && get_wcaps_type(get_wcaps(codec, to_nid)) != AC_WID_AUD_MIX) path->multi[path->depth + 1] = 1; @@ -290,6 +302,11 @@ snd_hda_add_new_path(struct hda_codec *codec, hda_nid_t from_nid, if (from_nid && to_nid && !is_reachable_path(codec, from_nid, to_nid)) return NULL; + /* check whether the path has been already added */ + path = get_nid_path(codec, from_nid, to_nid, with_aa_mix); + if (path) + return path; + path = snd_array_new(&spec->paths); if (!path) return NULL; diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h index 1090a524755..f1cae2e4937 100644 --- a/sound/pci/hda/hda_generic.h +++ b/sound/pci/hda/hda_generic.h @@ -53,6 +53,7 @@ struct nid_path { unsigned char multi[MAX_NID_PATH_DEPTH]; unsigned int ctls[NID_PATH_NUM_CTLS]; /* NID_PATH_XXX_CTL */ bool active; + bool with_aa_mix; }; /* mic/line-in auto switching entry */ |