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wait for codec reset before attaching the codec

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25574 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval 2008-05-20 17:07:50 +00:00
parent 1a19981411
commit 0f0fba6373
1 changed files with 14 additions and 6 deletions
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20
src/add-ons/kernel/drivers/audio/ac97/auich/auich.c
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@ -604,6 +604,7 @@ auich_setup(auich_dev * card)
status_t err = B_OK;
status_t rv;
unsigned char cmd;
int i;
PRINT(("auich_setup(%p)\n", card));
@ -663,18 +664,25 @@ auich_setup(auich_dev * card)
if ((rv & CNT_COLD) == 0) {
LOG(("cold reset failed\n"));
}
for (i = 0; i < 500; i++) {
rv = auich_reg_read_32(&card->config, AUICH_REG_GLOB_STA);
if (rv & STA_S0CR)
break;
snooze(1000);
}
if (!(rv & STA_S0CR)) { /* reset failure */
/* It never return STA_S0CR in some cases */
PRINT(("reset failure\n"));
}
/* attach the codec */
PRINT(("codec attach\n"));
ac97_attach(&card->config.ac97, (codec_reg_read)auich_codec_read,
(codec_reg_write)auich_codec_write, &card->config,
card->config.subvendor_id, card->config.subsystem_id);
rv = auich_reg_read_32(&card->config, AUICH_REG_GLOB_STA);
if (!(rv & STA_S0CR)) { /* reset failure */
/* It never return STA_S0CR in some cases */
PRINT(("reset failure\n"));
}
/* Print capabilities though there are no supports for now */
if ((rv & STA_SAMPLE_CAP) == STA_POM20) {
LOG(("20 bit precision support\n"));