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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: Lydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: Logan Li <loganli@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Lydia Wang 2009-10-10 19:07:37 +08:00 committed by Takashi Iwai
parent f5271101fa
commit 1731437910
1 changed files with 35 additions and 6 deletions
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41
sound/pci/hda/patch_via.c
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@ -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
},
};