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Disable AC97 microphone channel. Due to the channel allocation priority

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that favours true hardware channel, the first instance of recording
request will grab this channel (the first channel is being used as
vchan master). In many cases, it is not really work as intended and give
false impression of broken recording.

PR:		kern/118546
MFC after:	3 days
This commit is contained in:
ariff 2007-12-12 18:21:05 +00:00
parent c381c996e1
commit 6989ea14ce
1 changed files with 6 additions and 1 deletions
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7
sys/dev/sound/pci/ich.c
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@ -980,6 +980,10 @@ ich_pci_attach(device_t dev)
device_get_unit(dev), "fixedrate", &i) == 0 && i != 0)
sc->flags |= ICH_FIXED_RATE;
if (resource_int_value(device_get_name(dev),
device_get_unit(dev), "micchannel_enabled", &i) == 0 && i != 0)
sc->hasmic = 1;
sc->irqid = 0;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqid,
RF_ACTIVE | RF_SHAREABLE);
@ -1026,7 +1030,8 @@ ich_pci_attach(device_t dev)
extcaps = ac97_getextcaps(sc->codec);
sc->hasvra = extcaps & AC97_EXTCAP_VRA;
sc->hasvrm = extcaps & AC97_EXTCAP_VRM;
sc->hasmic = ac97_getcaps(sc->codec) & AC97_CAP_MICCHANNEL;
sc->hasmic = (sc->hasmic != 0 &&
(ac97_getcaps(sc->codec) & AC97_CAP_MICCHANNEL)) ? 1 : 0;
ac97_setextmode(sc->codec, sc->hasvra | sc->hasvrm);
sc->dtbl_size = sizeof(struct ich_desc) * ICH_DTBL_LENGTH *