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ALSA: hda - Re-enable the check NO_PRESENCE misc bit

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We disabled the check of NO_PRESENCE bit of the default pin-config
in commit f4419172 temporarily.  One problem was that the first
implementation was wrong -- the bit after the shift must be checked.
However, this would still give many regressions on machines with broken
BIOS.  They set this bit wrongly even on active pins.

A workaround is to check whether all pins contain this bit.  As far as
I've checked, broken BIOSen set this bit on all pins, no matter whether
active or not.  In such a case, the driver should ignore this bit check.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-11-10 12:36:46 +01:00
parent 9e226b4b7e
commit 2f451d2a2a
3 changed files with 14 additions and 7 deletions
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4
sound/pci/hda/hda_codec.c
View file

@ -4770,6 +4770,7 @@ int snd_hda_parse_pin_defcfg(struct hda_codec *codec,
memset(sequences_hp, 0, sizeof(sequences_hp));
assoc_line_out = 0;
codec->ignore_misc_bit = true;
end_nid = codec->start_nid + codec->num_nodes;
for (nid = codec->start_nid; nid < end_nid; nid++) {
unsigned int wid_caps = get_wcaps(codec, nid);
@ -4785,6 +4786,9 @@ int snd_hda_parse_pin_defcfg(struct hda_codec *codec,
continue;
def_conf = snd_hda_codec_get_pincfg(codec, nid);
if (!(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
AC_DEFCFG_MISC_NO_PRESENCE))
codec->ignore_misc_bit = false;
conn = get_defcfg_connect(def_conf);
if (conn == AC_JACK_PORT_NONE)
continue;

1
sound/pci/hda/hda_codec.h
View file

@ -854,6 +854,7 @@ struct hda_codec {
unsigned int no_sticky_stream:1; /* no sticky-PCM stream assignment */
unsigned int pins_shutup:1; /* pins are shut up */
unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */
unsigned int ignore_misc_bit:1; /* ignore MISC_NO_PRESENCE bit */
#ifdef CONFIG_SND_HDA_POWER_SAVE
unsigned int power_on :1; /* current (global) power-state */
unsigned int power_transition :1; /* power-state in transition */

16
sound/pci/hda/hda_local.h
View file

@ -510,13 +510,15 @@ int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
{
return (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT) &&
/* disable MISC_NO_PRESENCE check because it may break too
* many devices
*/
/*(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid) &
AC_DEFCFG_MISC_NO_PRESENCE)) &&*/
(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP);
if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
return false;
if (!codec->ignore_misc_bit &&
(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
AC_DEFCFG_MISC_NO_PRESENCE))
return false;
if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
return false;
return true;
}
/* flags for hda_nid_item */