-
-static void stac_set_power_state(struct hda_codec *codec, hda_nid_t fg,
- unsigned int power_state)
-{
- unsigned int afg_power_state = power_state;
- struct sigmatel_spec *spec = codec->spec;
-
- if (power_state == AC_PWRST_D3) {
- if (spec->vref_mute_led_nid) {
- /* with vref-out pin used for mute led control
- * codec AFG is prevented from D3 state
- */
- afg_power_state = AC_PWRST_D1;
- }
- /* this delay seems necessary to avoid click noise at power-down */
- msleep(100);
- }
- snd_hda_codec_read(codec, fg, 0, AC_VERB_SET_POWER_STATE,
- afg_power_state);
- snd_hda_codec_set_power_to_all(codec, fg, power_state);
-}