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Commit 4b6ace9e authored by Takashi Iwai's avatar Takashi Iwai
Browse files

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: default avatarAnnie Liu <annieliu@viatech.com.cn>
Tested-by: default avatarAnnie Liu <annieliu@viatech.com.cn>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c20c5a84

sound/pci/hda/patch_hdmi.c

+20 −0
Original line number Diff line number Diff line
@@ -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 = {