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This commit is contained in:
Orion Hodson 2001-12-19 18:04:04 +00:00
parent 23d2179744
commit faee270315
1 changed files with 8 additions and 9 deletions
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17
sys/dev/sound/pci/ich.c
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@ -450,8 +450,7 @@ unsigned int ich_calibrate(struct sc_info *sc)
* generated. */
struct sc_chinfo *ch = &sc->ch[1];
u_int16_t target_picb, actual_picb;
u_int32_t wait_us;
int32_t actual_48k_rate;
u_int32_t wait_us, actual_48k_rate;
KASSERT(ch->regbase == ICH_REG_PI_BASE, ("wrong direction"));
@ -473,17 +472,17 @@ unsigned int ich_calibrate(struct sc_info *sc)
actual_48k_rate = 48000 * (2 * target_picb - actual_picb) /
(target_picb);
if (bootverbose)
device_printf(sc->dev,
"Tgt PICB %d, Act PICB %d, 48k rate %d\n",
target_picb, actual_picb, actual_48k_rate);
if ((actual_48k_rate - 48000) > 500 ||
(actual_48k_rate - 48000) < -500) {
if (actual_48k_rate > 48500 || actual_48k_rate < 47500) {
sc->ac97rate = actual_48k_rate;
} else {
sc->ac97rate = 48000;
}
if (bootverbose)
device_printf(sc->dev,
"Estimated AC97 link rate %d, using %d\n",
actual_48k_rate, sc->ac97rate);
return sc->ac97rate;
}