ALSA: hda - Check the activity of the NID to be powered down
When an inactive path is powered down with spec->power_down_unused flag, we should check the activity of each widget in the path whether it's still referred from any active path. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -606,6 +606,10 @@ static bool is_active_nid(struct hda_codec *codec, hda_nid_t nid,
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return false;
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}
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/* check whether the NID is referred by any active paths */
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#define is_active_nid_for_any(codec, nid) \
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is_active_nid(codec, nid, HDA_OUTPUT, 0)
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/* get the default amp value for the target state */
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static int get_amp_val_to_activate(struct hda_codec *codec, hda_nid_t nid,
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int dir, unsigned int caps, bool enable)
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@ -759,7 +763,8 @@ static void path_power_down_sync(struct hda_codec *codec, struct nid_path *path)
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for (i = 0; i < path->depth; i++) {
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hda_nid_t nid = path->path[i];
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if (!snd_hda_check_power_state(codec, nid, AC_PWRST_D3)) {
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if (!snd_hda_check_power_state(codec, nid, AC_PWRST_D3) &&
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!is_active_nid_for_any(codec, nid)) {
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snd_hda_codec_write(codec, nid, 0,
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AC_VERB_SET_POWER_STATE,
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AC_PWRST_D3);
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@ -4157,7 +4162,7 @@ static unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
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return power_state;
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if (get_wcaps_type(get_wcaps(codec, nid)) >= AC_WID_POWER)
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return power_state;
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if (is_active_nid(codec, nid, HDA_OUTPUT, 0))
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if (is_active_nid_for_any(codec, nid))
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return power_state;
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return AC_PWRST_D3;
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}
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