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wait on codec power up

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25566 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval 2008-05-19 21:42:44 +00:00
parent 5b03912b5f
commit 6ca824a7aa
1 changed files with 15 additions and 8 deletions
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23
src/add-ons/kernel/drivers/audio/ac97/auich/ac97.c
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@ -199,21 +199,20 @@ ac97_attach(ac97_dev **_dev, codec_reg_read reg_read, codec_reg_write reg_write,
{
ac97_dev *dev;
codec_table *codec;
int i;
*_dev = dev = (ac97_dev *) malloc(sizeof(ac97_dev));
dev->cookie = cookie;
dev->reg_read = reg_read;
dev->reg_write = reg_write;
dev->codec_id = ((uint32)reg_read(cookie, AC97_VENDOR_ID1) << 16) | reg_read(cookie, AC97_VENDOR_ID2);
codec = find_codec_table(dev->codec_id);
dev->codec_info = codec->info;
dev->init = codec->init;
dev->set_rate = 0;
dev->get_rate = 0;
dev->clock = 48000; /* default clock on non-broken motherboards */
dev->min_vsr = 0x0001;
dev->max_vsr = 0xffff;
dev->reversed_eamp_polarity = false;
dev->capabilities = 0;
dev->subsystem = (subvendor_id << 16) | subsystem_id;
if (dev->subsystem == 0x161f202f
@ -229,18 +228,26 @@ ac97_attach(ac97_dev **_dev, codec_reg_read reg_read, codec_reg_write reg_write,
|| dev->subsystem == 0x103382be) {
dev->reversed_eamp_polarity = true;
}
/* reset the codec */
LOG(("codec reset\n"));
ac97_reg_uncached_write(dev, AC97_RESET, 0x0000);
snooze(50000); // 50 ms
for (i = 0; i < 500; i++) {
if ((ac97_reg_uncached_read(dev, AC97_POWERDOWN) & 0xf) == 0xf)
break;
snooze(1000);
}
/* setup register cache */
ac97_update_register_cache(dev);
dev->codec_id = ((uint32)reg_read(cookie, AC97_VENDOR_ID1) << 16) | reg_read(cookie, AC97_VENDOR_ID2);
codec = find_codec_table(dev->codec_id);
dev->codec_info = codec->info;
dev->init = codec->init;
dev->codec_3d_stereo_enhancement = stereo_enhancement_technique[(ac97_reg_cached_read(dev, AC97_RESET) >> 10) & 31];
dev->capabilities = 0;
ac97_reg_update_bits(dev, AC97_EXTENDED_STAT_CTRL, 1, 1); // enable variable rate audio
ac97_detect_capabilities(dev);