From 6b275b140094b701f7ad15272f0597e9d954e5e4 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 20 Mar 2015 18:11:05 +0100 Subject: ALSA: hda - Fix power of pins used for mute LED with vrefs Some pins are used for controlling the LED with the VREF value. This patch changes the power behavior of such pins to be constantly up. A new state, pin_fixed, is introduced to nid_path to indicate that the path contains the fixed pin. This improves also the readability a bit for other static routes, too. Then a helper function snd_hda_gen_fix_pin_power() is called from the codec driver for such fixed pins, and it will create fake paths containing only these pins with pin_fixed=1 flag. Reported-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_generic.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/pci/hda/hda_generic.h') diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h index 54659b51fe16..56e4139b9032 100644 --- a/sound/pci/hda/hda_generic.h +++ b/sound/pci/hda/hda_generic.h @@ -48,6 +48,7 @@ struct nid_path { unsigned int ctls[NID_PATH_NUM_CTLS]; /* NID_PATH_XXX_CTL */ bool active:1; /* activated by driver */ bool pin_enabled:1; /* pins are enabled */ + bool pin_fixed:1; /* path with fixed pin */ bool stream_enabled:1; /* stream is active */ }; @@ -343,5 +344,6 @@ unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec, hda_nid_t nid, unsigned int power_state); void snd_hda_gen_stream_pm(struct hda_codec *codec, hda_nid_t nid, bool on); +int snd_hda_gen_fix_pin_power(struct hda_codec *codec, hda_nid_t pin); #endif /* __SOUND_HDA_GENERIC_H */ -- cgit v1.2.3