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ALSA: hda - Keep EAPD turned on for old Conexant chips 

In the old Conexant chips (5045, 5047, 5051 and 5066), a single EAPD
may handle both headphone and speaker outputs while it's assigned only
to one of them.  Turning off dynamically leads to the unexpected silent
output in such a configuration with the auto-mute function.

Since it's difficult to know how the EAPD is handled in the actual h/w
implementation, better to keep EAPD on while running for such codecs.

Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-10-14 15:22:34 +02:00
parent 527e4d73af
commit 254f296840
1 changed files with 22 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
sound/pci/hda/patch_conexant.c
View File

@ -136,6 +136,7 @@ struct conexant_spec {
unsigned int thinkpad:1;
unsigned int hp_laptop:1;
unsigned int asus:1;
unsigned int pin_eapd_ctrls:1;
unsigned int adc_switching:1;
@ -3430,12 +3431,14 @@ static void cx_auto_turn_eapd(struct hda_codec *codec, int num_pins,
static void do_automute(struct hda_codec *codec, int num_pins,
hda_nid_t *pins, bool on)
{
struct conexant_spec *spec = codec->spec;
int i;
for (i = 0; i < num_pins; i++)
snd_hda_codec_write(codec, pins[i], 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
on ? PIN_OUT : 0);
cx_auto_turn_eapd(codec, num_pins, pins, on);
if (spec->pin_eapd_ctrls)
cx_auto_turn_eapd(codec, num_pins, pins, on);
}
static int detect_jacks(struct hda_codec *codec, int num_pins, hda_nid_t *pins)
@ -3460,9 +3463,12 @@ static void cx_auto_update_speakers(struct hda_codec *codec)
int on = 1;
/* turn on HP EAPD when HP jacks are present */
if (spec->auto_mute)
on = spec->hp_present;
cx_auto_turn_eapd(codec, cfg->hp_outs, cfg->hp_pins, on);
if (spec->pin_eapd_ctrls) {
if (spec->auto_mute)
on = spec->hp_present;
cx_auto_turn_eapd(codec, cfg->hp_outs, cfg->hp_pins, on);
}
/* mute speakers in auto-mode if HP or LO jacks are plugged */
if (spec->auto_mute)
on = !(spec->hp_present ||
@ -3889,20 +3895,10 @@ static void cx_auto_parse_beep(struct hda_codec *codec)
#define cx_auto_parse_beep(codec)
#endif
static bool found_in_nid_list(hda_nid_t nid, const hda_nid_t *list, int nums)
{
int i;
for (i = 0; i < nums; i++)
if (list[i] == nid)
return true;
return false;
}
/* parse extra-EAPD that aren't assigned to any pins */
/* parse EAPDs */
static void cx_auto_parse_eapd(struct hda_codec *codec)
{
struct conexant_spec *spec = codec->spec;
struct auto_pin_cfg *cfg = &spec->autocfg;
hda_nid_t nid, end_nid;
end_nid = codec->start_nid + codec->num_nodes;
@ -3911,14 +3907,18 @@ static void cx_auto_parse_eapd(struct hda_codec *codec)
continue;
if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD))
continue;
if (found_in_nid_list(nid, cfg->line_out_pins, cfg->line_outs) ||
found_in_nid_list(nid, cfg->hp_pins, cfg->hp_outs) ||
found_in_nid_list(nid, cfg->speaker_pins, cfg->speaker_outs))
continue;
spec->eapds[spec->num_eapds++] = nid;
if (spec->num_eapds >= ARRAY_SIZE(spec->eapds))
break;
}
/* NOTE: below is a wild guess; if we have more than two EAPDs,
* it's a new chip, where EAPDs are supposed to be associated to
* pins, and we can control EAPD per pin.
* OTOH, if only one or two EAPDs are found, it's an old chip,
* thus it might control over all pins.
*/
spec->pin_eapd_ctrls = spec->num_eapds > 2;
}
static int cx_auto_parse_auto_config(struct hda_codec *codec)
@ -4024,8 +4024,9 @@ static void cx_auto_init_output(struct hda_codec *codec)
}
}
cx_auto_update_speakers(codec);
/* turn on/off extra EAPDs, too */
cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, true);
/* turn on all EAPDs if no individual EAPD control is available */
if (!spec->pin_eapd_ctrls)
cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, true);
}
static void cx_auto_init_input(struct hda_codec *codec)