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ALSA: hda - Dynamically turn on/off EAPD in generic codec driver 

When spec->own_eapd_ctl isn't set, try to turn on/off EAPD on demand
for each pin.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-12-20 15:36:30 +01:00
parent 64049c81df
commit d5a9f1bb38
1 changed files with 16 additions and 6 deletions
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22
sound/pci/hda/hda_generic.c
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@ -523,6 +523,18 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
}
EXPORT_SYMBOL_HDA(snd_hda_activate_path);
/* turn on/off EAPD on the given pin */
static void set_pin_eapd(struct hda_codec *codec, hda_nid_t pin, bool enable)
{
struct hda_gen_spec *spec = codec->spec;
if (spec->own_eapd_ctl ||
!(snd_hda_query_pin_caps(codec, pin) & AC_PINCAP_EAPD))
return;
snd_hda_codec_update_cache(codec, pin, 0,
AC_VERB_SET_EAPD_BTLENABLE,
enable ? 0x02 : 0x00);
}
/*
* Helper functions for creating mixer ctl elements
@ -1485,7 +1497,9 @@ static int set_multi_io(struct hda_codec *codec, int idx, bool output)
if (output) {
snd_hda_set_pin_ctl_cache(codec, nid, PIN_OUT);
snd_hda_activate_path(codec, path, true, true);
set_pin_eapd(codec, nid, true);
} else {
set_pin_eapd(codec, nid, false);
snd_hda_activate_path(codec, path, false, true);
snd_hda_set_pin_ctl_cache(codec, nid,
spec->multi_io[idx].ctl_in);
@ -2418,6 +2432,7 @@ static void do_automute(struct hda_codec *codec, int num_pins, hda_nid_t *pins,
val = 0;
val |= pin_bits;
snd_hda_set_pin_ctl(codec, nid, val);
set_pin_eapd(codec, nid, !mute);
}
}
@ -3351,7 +3366,6 @@ EXPORT_SYMBOL_HDA(snd_hda_gen_build_pcms);
static void set_output_and_unmute(struct hda_codec *codec, hda_nid_t pin,
int pin_type, hda_nid_t dac)
{
struct hda_gen_spec *spec = codec->spec;
struct nid_path *path;
snd_hda_set_pin_ctl_cache(codec, pin, pin_type);
@ -3361,11 +3375,7 @@ static void set_output_and_unmute(struct hda_codec *codec, hda_nid_t pin,
if (path->active)
return;
snd_hda_activate_path(codec, path, true, true);
if (!spec->own_eapd_ctl &&
(snd_hda_query_pin_caps(codec, pin) & AC_PINCAP_EAPD))
snd_hda_codec_update_cache(codec, pin, 0,
AC_VERB_SET_EAPD_BTLENABLE, 0x02);
set_pin_eapd(codec, pin, true);
}
/* initialize primary output paths */