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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>
This commit is contained in:
Takashi Iwai 2013-11-18 12:07:29 +01:00
parent b21bdd0d34
commit f0639272d6
3 changed files with 37 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
sound/pci/hda/hda_codec.c
View File

@ -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);

1
sound/pci/hda/hda_local.h
View File

@ -353,6 +353,7 @@ int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
* generic codec parser
*/
int snd_hda_parse_generic_codec(struct hda_codec *codec);
int snd_hda_parse_hdmi_codec(struct hda_codec *codec);
/*
* generic proc interface

9
sound/pci/hda/patch_hdmi.c
View File

@ -3213,6 +3213,15 @@ static int patch_via_hdmi(struct hda_codec *codec)
return patch_simple_hdmi(codec, VIAHDMI_CVT_NID, VIAHDMI_PIN_NID);
}
/*
* called from hda_codec.c for generic HDMI support
*/
int snd_hda_parse_hdmi_codec(struct hda_codec *codec)
{
return patch_generic_hdmi(codec);
}
EXPORT_SYMBOL_HDA(snd_hda_parse_hdmi_codec);
/*
* patch entries
*/