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ALSA: hda - Add the support for VIA HDMI pin detection 

This patch adds the hotplug unsol event handling to simple_hdmi*().
It works on VIA VX900.  If AMD or Nvidia chips support the
pin-detection similarly, it can be added easily, too.

Reported-by: Annie Liu <annieliu@viatech.com.cn>
Tested-by: Annie Liu <annieliu@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-06-15 11:53:32 +02:00
parent c20c5a841c
commit 4b6ace9e71
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sound/pci/hda/patch_hdmi.c
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@ -1377,6 +1377,19 @@ static int simple_playback_build_pcms(struct hda_codec *codec)
return 0;
}
/* unsolicited event for jack sensing */
static void simple_hdmi_unsol_event(struct hda_codec *codec,
unsigned int res)
{
snd_hda_jack_get_action(codec, res >> AC_UNSOL_RES_TAG_SHIFT);
snd_hda_jack_report_sync(codec);
}
/* generic_hdmi_build_jack can be used for simple_hdmi, too,
* as long as spec->pins[] is set correctly
*/
#define simple_hdmi_build_jack generic_hdmi_build_jack
static int simple_playback_build_controls(struct hda_codec *codec)
{
struct hdmi_spec *spec = codec->spec;
@ -1389,6 +1402,11 @@ static int simple_playback_build_controls(struct hda_codec *codec)
spec->cvts[i].cvt_nid);
if (err < 0)
return err;
if (codec->patch_ops.unsol_event) {
err = simple_hdmi_build_jack(codec, i);
if (err < 0)
return err;
}
}
return 0;
@ -1876,6 +1894,7 @@ static struct hda_verb viahdmi_basic_init[] = {
static int via_hdmi_init(struct hda_codec *codec)
{
snd_hda_sequence_write(codec, viahdmi_basic_init);
snd_hda_jack_report_sync(codec);
return 0;
}
@ -1884,6 +1903,7 @@ static const struct hda_codec_ops via_hdmi_patch_ops = {
.build_pcms = simple_playback_build_pcms,
.init = via_hdmi_init,
.free = simple_playback_free,
.unsol_event = simple_hdmi_unsol_event,
};
static struct hda_pcm_stream via_hdmi_digital_playback = {