提交 0f4ccbb0 编写于 作者: W Wang Xingchao 提交者: Takashi Iwai

ALSA: hda - reduce msleep time if EPSS power states supported

if EPSS supported, transition from D3 state to D0 state in less
than 10ms
Signed-off-by: NWang Xingchao <xingchao.wang@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
上级 0c7f46ad
......@@ -3532,8 +3532,11 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
}
/* this delay seems necessary to avoid click noise at power-down */
if (power_state == AC_PWRST_D3)
msleep(100);
if (power_state == AC_PWRST_D3) {
/* transition time less than 10ms for power down */
bool epss = snd_hda_codec_get_supported_ps(codec, fg, AC_PWRST_EPSS);
msleep(epss ? 10 : 100);
}
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);
......
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