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Commit 17314379 authored by Lydia Wang's avatar Lydia Wang Committed by Takashi Iwai
Browse files

ALSA: HDA VIA: Add low current mode for power saving. 



For VT1708B, VT1708S and VT1702, enter low current mode if no analog
stream is opened and all aa path mute.

Signed-off-by: default avatarLydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: default avatarLogan Li <loganli@viatech.com.cn>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f5271101

sound/pci/hda/patch_via.c

+35 −6
Original line number Diff line number Diff line
@@ -783,6 +783,10 @@ static int via_playback_pcm_open(struct hda_pcm_stream *hinfo, 
				 struct snd_pcm_substream *substream)

{

	struct via_spec *spec = codec->spec;

	int idle = substream->pstr->substream_opened == 1

		&& substream->ref_count == 0;



	analog_low_current_mode(codec, idle);

	return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream,

					     hinfo);

}
@@ -1089,6 +1093,11 @@ static int via_build_controls(struct hda_codec *codec) 
		if (err < 0)

			return err;

	}



	/* init power states */

	set_jack_power_state(codec);

	analog_low_current_mode(codec, 1);



	via_free_kctls(codec); /* no longer needed */

	return 0;

}
@@ -2312,6 +2321,17 @@ static struct hda_verb vt1708B_uniwill_init_verbs[] = { 
	{ }

};



static int via_pcm_open_close(struct hda_pcm_stream *hinfo,

			      struct hda_codec *codec,

			      struct snd_pcm_substream *substream)

{

	int idle = substream->pstr->substream_opened == 1

		&& substream->ref_count == 0;



	analog_low_current_mode(codec, idle);

	return 0;

}



static struct hda_pcm_stream vt1708B_8ch_pcm_analog_playback = {

	.substreams = 2,

	.channels_min = 2,
@@ -2320,7 +2340,8 @@ static struct hda_pcm_stream vt1708B_8ch_pcm_analog_playback = { 
	.ops = {

		.open = via_playback_pcm_open,

		.prepare = via_playback_multi_pcm_prepare,

		.cleanup = via_playback_multi_pcm_cleanup

		.cleanup = via_playback_multi_pcm_cleanup,

		.close = via_pcm_open_close

	},

};
@@ -2342,8 +2363,10 @@ static struct hda_pcm_stream vt1708B_pcm_analog_capture = { 
	.channels_max = 2,

	.nid = 0x13, /* NID to query formats and rates */

	.ops = {

		.open = via_pcm_open_close,

		.prepare = via_capture_pcm_prepare,

		.cleanup = via_capture_pcm_cleanup

		.cleanup = via_capture_pcm_cleanup,

		.close = via_pcm_open_close

	},

};
@@ -2800,7 +2823,8 @@ static struct hda_pcm_stream vt1708S_pcm_analog_playback = { 
	.ops = {

		.open = via_playback_pcm_open,

		.prepare = via_playback_pcm_prepare,

		.cleanup = via_playback_pcm_cleanup

		.cleanup = via_playback_pcm_cleanup,

		.close = via_pcm_open_close

	},

};
@@ -2810,8 +2834,10 @@ static struct hda_pcm_stream vt1708S_pcm_analog_capture = { 
	.channels_max = 2,

	.nid = 0x13, /* NID to query formats and rates */

	.ops = {

		.open = via_pcm_open_close,

		.prepare = via_capture_pcm_prepare,

		.cleanup = via_capture_pcm_cleanup

		.cleanup = via_capture_pcm_cleanup,

		.close = via_pcm_open_close

	},

};
@@ -3236,7 +3262,8 @@ static struct hda_pcm_stream vt1702_pcm_analog_playback = { 
	.ops = {

		.open = via_playback_pcm_open,

		.prepare = via_playback_multi_pcm_prepare,

		.cleanup = via_playback_multi_pcm_cleanup

		.cleanup = via_playback_multi_pcm_cleanup,

		.close = via_pcm_open_close

	},

};
@@ -3246,8 +3273,10 @@ static struct hda_pcm_stream vt1702_pcm_analog_capture = { 
	.channels_max = 2,

	.nid = 0x12, /* NID to query formats and rates */

	.ops = {

		.open = via_pcm_open_close,

		.prepare = via_capture_pcm_prepare,

		.cleanup = via_capture_pcm_cleanup

		.cleanup = via_capture_pcm_cleanup,

		.close = via_pcm_open_close

	},

};