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ALSA: hda - Avoid overwrite of jack events with STAC/IDT 

Since only one event can be associated to a (pin) widget, it's safer
to avoid the multiple mapping.  This patch fixes the behavior of the
STAC/IDT codec driver.

Now stac_get_event() doesn't take the type argument but simply returns
the first hit element.  Then enable_pin_detect() checks the validity
of the type, and returns non-zero only if a valid entry.  The caller
can call stac_issue_unsol_event() after checking the return value.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-07-29 14:23:09 +02:00
parent 50c62f068e
commit 62558ce157
1 changed files with 30 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
sound/pci/hda/patch_sigmatel.c
View File

@ -2620,8 +2620,7 @@ static int stac92xx_hp_switch_get(struct snd_kcontrol *kcontrol,
return 0;
}
static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid,
unsigned char type);
static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid);
static int stac92xx_hp_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
@ -2635,7 +2634,7 @@ static int stac92xx_hp_switch_put(struct snd_kcontrol *kcontrol,
/* check to be sure that the ports are upto date with
* switch changes
*/
stac_issue_unsol_event(codec, nid, STAC_HP_EVENT);
stac_issue_unsol_event(codec, nid);
return 1;
}
@ -2768,7 +2767,7 @@ static int stac92xx_io_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_
* appropriately according to the pin direction
*/
if (spec->hp_detect)
stac_issue_unsol_event(codec, nid, STAC_HP_EVENT);
stac_issue_unsol_event(codec, nid);
return 1;
}
@ -4107,14 +4106,14 @@ static int stac_add_event(struct sigmatel_spec *spec, hda_nid_t nid,
}
static struct sigmatel_event *stac_get_event(struct hda_codec *codec,
hda_nid_t nid, unsigned char type)
hda_nid_t nid)
{
struct sigmatel_spec *spec = codec->spec;
struct sigmatel_event *event = spec->events.list;
int i;
for (i = 0; i < spec->events.used; i++, event++) {
if (event->nid == nid && event->type == type)
if (event->nid == nid)
return event;
}
return NULL;
@ -4134,24 +4133,32 @@ static struct sigmatel_event *stac_get_event_from_tag(struct hda_codec *codec,
return NULL;
}
static void enable_pin_detect(struct hda_codec *codec, hda_nid_t nid,
unsigned int type)
/* check if given nid is a valid pin and no other events are assigned
* to it. If OK, assign the event, set the unsol flag, and returns 1.
* Otherwise, returns zero.
*/
static int enable_pin_detect(struct hda_codec *codec, hda_nid_t nid,
unsigned int type)
{
struct sigmatel_event *event;
int tag;
if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
return;
event = stac_get_event(codec, nid, type);
if (event)
return 0;
event = stac_get_event(codec, nid);
if (event) {
if (event->type != type)
return 0;
tag = event->tag;
else
} else {
tag = stac_add_event(codec->spec, nid, type, 0);
if (tag < 0)
return;
if (tag < 0)
return 0;
}
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_UNSOLICITED_ENABLE,
AC_USRSP_EN | tag);
return 1;
}
static int is_nid_hp_pin(struct auto_pin_cfg *cfg, hda_nid_t nid)
@ -4250,8 +4257,7 @@ static int stac92xx_init(struct hda_codec *codec)
stac92xx_auto_set_pinctl(codec, spec->autocfg.line_out_pins[0],
AC_PINCTL_OUT_EN);
/* fake event to set up pins */
stac_issue_unsol_event(codec, spec->autocfg.hp_pins[0],
STAC_HP_EVENT);
stac_issue_unsol_event(codec, spec->autocfg.hp_pins[0]);
} else {
stac92xx_auto_init_multi_out(codec);
stac92xx_auto_init_hp_out(codec);
@ -4284,10 +4290,9 @@ static int stac92xx_init(struct hda_codec *codec)
}
conf = snd_hda_codec_get_pincfg(codec, nid);
if (get_defcfg_connect(conf) != AC_JACK_PORT_FIXED) {
enable_pin_detect(codec, nid,
STAC_INSERT_EVENT);
stac_issue_unsol_event(codec, nid,
STAC_INSERT_EVENT);
if (enable_pin_detect(codec, nid,
STAC_INSERT_EVENT))
stac_issue_unsol_event(codec, nid);
}
}
}
@ -4332,10 +4337,8 @@ static int stac92xx_init(struct hda_codec *codec)
stac_toggle_power_map(codec, nid, 1);
continue;
}
if (!stac_get_event(codec, nid, STAC_INSERT_EVENT)) {
enable_pin_detect(codec, nid, STAC_PWR_EVENT);
stac_issue_unsol_event(codec, nid, STAC_PWR_EVENT);
}
if (enable_pin_detect(codec, nid, STAC_PWR_EVENT))
stac_issue_unsol_event(codec, nid);
}
if (spec->dac_list)
stac92xx_power_down(codec);
@ -4598,10 +4601,9 @@ static void stac92xx_report_jack(struct hda_codec *codec, hda_nid_t nid)
}
}
static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid,
unsigned char type)
static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid)
{
struct sigmatel_event *event = stac_get_event(codec, nid, type);
struct sigmatel_event *event = stac_get_event(codec, nid);
if (!event)
return;
codec->patch_ops.unsol_event(codec, (unsigned)event->tag << 26);
@ -4712,8 +4714,7 @@ static int stac92xx_resume(struct hda_codec *codec)
snd_hda_codec_resume_cache(codec);
/* fake event to set up pins again to override cached values */
if (spec->hp_detect)
stac_issue_unsol_event(codec, spec->autocfg.hp_pins[0],
STAC_HP_EVENT);
stac_issue_unsol_event(codec, spec->autocfg.hp_pins[0]);
return 0;
}