if EPSS supported, transition from D3 state to D0 state in less than 10ms
Signed-off-by: Wang Xingchao xingchao.wang@intel.com --- sound/pci/hda/hda_codec.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index b89c8ec..5298ba1 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3526,14 +3526,18 @@ static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, hda_nid_t fg static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, unsigned int power_state) { + bool epss; if (codec->patch_ops.set_power_state) { codec->patch_ops.set_power_state(codec, fg, power_state); return; }
+ epss = snd_hda_codec_get_supported_ps(codec, fg, AC_PWRST_EPSS); /* this delay seems necessary to avoid click noise at power-down */ - if (power_state == AC_PWRST_D3) + if ((power_state == AC_PWRST_D3) && !epss) msleep(100); + else + msleep(10); snd_hda_codec_read(codec, fg, 0, AC_VERB_SET_POWER_STATE, power_state); snd_hda_codec_set_power_to_all(codec, fg, power_state, true);