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don't check extended features on codecs known to hang. should fix neomagic

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problems.
This commit is contained in:
Cameron Grant 2000-03-24 03:14:35 +00:00
parent 5c51cd6437
commit 6b4b88f7a2
1 changed files with 26 additions and 16 deletions
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42
sys/dev/sound/pcm/ac97.c
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@ -47,12 +47,12 @@ struct ac97_info {
void *devinfo;
char id[4];
char rev;
unsigned caps, se, extcaps, extid, extstat;
unsigned caps, se, extcaps, extid, extstat, noext:1;
struct ac97mixtable_entry mix[32];
};
struct ac97_codecid {
u_int32_t id;
u_int32_t id, noext:1;
char *name;
};
@ -81,14 +81,15 @@ static const unsigned ac97recdevs =
SOUND_MASK_CD | SOUND_MASK_LINE1 | SOUND_MASK_VIDEO;
static struct ac97_codecid ac97codecid[] = {
{ 0x414B4D00, "Asahi Kasei AK4540" },
{ 0x43525900, "Cirrus Logic CS4297" },
{ 0x83847600, "SigmaTel STAC????" },
{ 0x83847604, "SigmaTel STAC9701/3/4/5" },
{ 0x83847605, "SigmaTel STAC9704" },
{ 0x83847608, "SigmaTel STAC9708" },
{ 0x83847609, "SigmaTel STAC9721" },
{ 0, NULL }
{ 0x414b4d00, 1, "Asahi Kasei AK4540 rev 0" },
{ 0x43525900, 0, "Cirrus Logic CS4297" },
{ 0x83847600, 0, "SigmaTel STAC????" },
{ 0x83847604, 0, "SigmaTel STAC9701/3/4/5" },
{ 0x83847605, 0, "SigmaTel STAC9704" },
{ 0x83847608, 0, "SigmaTel STAC9708" },
{ 0x83847609, 0, "SigmaTel STAC9721" },
{ 0x414b4d01, 1, "Asahi Kasei AK4540 rev 1" },
{ 0, 0, NULL }
};
static char *ac97enhancement[] = {
@ -308,15 +309,24 @@ ac97_initmixer(struct ac97_info *codec)
codec->caps = i & 0x03ff;
codec->se = (i & 0x7c00) >> 10;
i = rdcd(codec, AC97_REGEXT_ID);
codec->extcaps = i & 0x3fff;
codec->extid = (i & 0xc000) >> 14;
codec->extstat = rdcd(codec, AC97_REGEXT_STAT) & AC97_EXTCAPS;
id = (rdcd(codec, AC97_REG_ID1) << 16) | rdcd(codec, AC97_REG_ID2);
codec->rev = id & 0x000000ff;
for (i = 0; ac97codecid[i].id; i++)
if (ac97codecid[i].id == id)
codec->noext = 1;
if (!codec->noext) {
i = rdcd(codec, AC97_REGEXT_ID);
codec->extcaps = i & 0x3fff;
codec->extid = (i & 0xc000) >> 14;
codec->extstat = rdcd(codec, AC97_REGEXT_STAT) & AC97_EXTCAPS;
} else {
codec->extcaps = 0;
codec->extid = 0;
codec->extstat = 0;
}
wrcd(codec, AC97_MIX_MASTER, 0x20);
if ((rdcd(codec, AC97_MIX_MASTER) & 0x20) == 0x20)
codec->mix[SOUND_MIXER_VOLUME].bits++;