diff options
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 19ff923b243..2311114bf52 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3765,6 +3765,37 @@ static unsigned int hda_set_power_state(struct hda_codec *codec, return state; } +/* sync power states of all widgets; + * this is called at the end of codec parsing + */ +static void sync_power_up_states(struct hda_codec *codec) +{ + hda_nid_t nid = codec->start_nid; + int i; + + /* don't care if no or standard filter is used */ + if (!codec->power_filter || codec->power_filter == default_power_filter) + return; + + for (i = 0; i < codec->num_nodes; i++, nid++) { + unsigned int wcaps = get_wcaps(codec, nid); + unsigned int state, target; + if (!(wcaps & AC_WCAP_POWER)) + continue; + target = codec->power_filter(codec, nid, AC_PWRST_D0); + if (target == AC_PWRST_D0) + continue; + state = snd_hda_codec_read(codec, nid, 0, + AC_VERB_GET_POWER_STATE, 0); + if (state & AC_PWRST_ERROR) + continue; + state = (state >> 4) & 0x0f; + if (state != target) + snd_hda_codec_write(codec, nid, 0, + AC_VERB_SET_POWER_STATE, target); + } +} + #ifdef CONFIG_SND_HDA_HWDEP /* execute additional init verbs */ static void hda_exec_init_verbs(struct hda_codec *codec) @@ -3952,6 +3983,7 @@ int snd_hda_codec_build_controls(struct hda_codec *codec) hda_jackpoll_work(&codec->jackpoll_work.work); else snd_hda_jack_report_sync(codec); /* call at the last init point */ + sync_power_up_states(codec); return 0; } |