diff options
| author | Takashi Iwai <tiwai@suse.de> | 2013-11-18 12:07:29 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-11-26 13:42:38 +0100 |
| commit | f0639272d6c8e4706ea6d1b0dbc6eb83eaaff412 (patch) | |
| tree | 1936f0d332ef3f0f0fc1f596e332ff795d2a7691 /sound/pci/hda/hda_codec.c | |
| parent | b21bdd0d343c8b2496690283211e27c9af598ed3 (diff) | |
ALSA: hda - Bind with HDMI codec parser automatically
If a codec contains only the digital outputs, it's very likely a
HDMI/DP codec, which isn't supported by the generic parser but via
HDMI codec parser code. Detect such a case and bind with the proper
parser object if available.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 4d3f46329eb5..bada677df8a7 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1557,6 +1557,31 @@ int snd_hda_codec_update_widgets(struct hda_codec *codec) EXPORT_SYMBOL_HDA(snd_hda_codec_update_widgets); +#ifdef CONFIG_SND_HDA_CODEC_HDMI +/* if all audio out widgets are digital, let's assume the codec as a HDMI/DP */ +static bool is_likely_hdmi_codec(struct hda_codec *codec) +{ + hda_nid_t nid = codec->start_nid; + int i; + + for (i = 0; i < codec->num_nodes; i++, nid++) { + unsigned int wcaps = get_wcaps(codec, nid); + switch (get_wcaps_type(wcaps)) { + case AC_WID_AUD_IN: + return false; /* HDMI parser supports only HDMI out */ + case AC_WID_AUD_OUT: + if (!(wcaps & AC_WCAP_DIGITAL)) + return false; + break; + } + } + return true; +} +#else +/* no HDMI codec parser support */ +#define is_likely_hdmi_codec(codec) false +#endif /* CONFIG_SND_HDA_CODEC_HDMI */ + /** * snd_hda_codec_configure - (Re-)configure the HD-audio codec * @codec: the HDA codec @@ -1582,6 +1607,8 @@ int snd_hda_codec_configure(struct hda_codec *codec) patch = codec->preset->patch; if (!patch) { unload_parser(codec); /* to be sure */ + if (is_likely_hdmi_codec(codec)) + patch = load_parser(codec, snd_hda_parse_hdmi_codec); #ifdef CONFIG_SND_HDA_GENERIC if (!patch) patch = load_parser(codec, snd_hda_parse_generic_codec); |