void
ac97_attach(ac97_dev **_dev, codec_reg_read reg_read, codec_reg_write reg_write, void *cookie)
{
ac97_dev *dev;
codec_table *codec;
*_dev = dev = (ac97_dev *) malloc(sizeof(ac97_dev));
dev->cookie = cookie;
dev->reg_read = reg_read;
dev->reg_write = reg_write;
dev->codec_id = (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;
/* reset the codec */
LOG(("codec reset\n"));
ac97_reg_uncached_write(dev, AC97_RESET, 0x0000);
snooze(50000); // 50 ms
/* setup register cache */
ac97_update_register_cache(dev);
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);
dev->init(dev);
ac97_amp_enable(dev, true);
/* set mixer defaults, enabled Line-out sources are PCM-out, CD-in, Line-in */
ac97_reg_update(dev, AC97_CENTER_LFE_VOLUME, 0x0000); /* set LFE & center volume 0dB */
ac97_reg_update(dev, AC97_SURR_VOLUME, 0x0000); /* set surround volume 0dB */
ac97_reg_update(dev, AC97_MASTER_VOLUME, 0x0000); /* set master output 0dB */
ac97_reg_update(dev, AC97_AUX_OUT_VOLUME, 0x0000); /* set aux output 0dB */
ac97_reg_update(dev, AC97_MONO_VOLUME, 0x0000); /* set mono output 0dB */
ac97_reg_update(dev, AC97_PCM_OUT_VOLUME, 0x0808); /* enable pcm-out */
ac97_reg_update(dev, AC97_CD_VOLUME, 0x0808); /* enable cd-in */
ac97_reg_update(dev, AC97_LINE_IN_VOLUME, 0x0808); /* enable line-in */
ac97_dump_capabilities(dev);
}
void
ac97_attach(ac97_dev **_dev, codec_reg_read reg_read, codec_reg_write reg_write, void *cookie,
ushort subvendor_id, ushort subsystem_id)
{
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->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
|| dev->subsystem == 0x161f203a
|| dev->subsystem == 0x161f203e
|| dev->subsystem == 0x161f204c
|| dev->subsystem == 0x104d8144
|| dev->subsystem == 0x104d8197
|| dev->subsystem == 0x104d81c0
|| dev->subsystem == 0x104d81c5
|| dev->subsystem == 0x103c3089
|| dev->subsystem == 0x103c309a
|| dev->subsystem == 0x10338213
|| dev->subsystem == 0x103382be) {
dev->reversed_eamp_polarity = true;
}
/* reset the codec */
LOG(("codec reset\n"));
ac97_reg_uncached_write(dev, AC97_RESET, 0x0000);
for (i = 0; i < 500; i++) {
if ((ac97_reg_uncached_read(dev, AC97_POWERDOWN) & 0xf) == 0xf)
break;
snooze(1000);
}
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];
/* setup register cache */
ac97_update_register_cache(dev);
ac97_reg_update_bits(dev, AC97_EXTENDED_STAT_CTRL, 1, 1); // enable variable rate audio
ac97_detect_capabilities(dev);
dev->init(dev);
ac97_amp_enable(dev, true);
/* set mixer defaults, enabled Line-out sources are PCM-out, CD-in, Line-in */
ac97_reg_update(dev, AC97_CENTER_LFE_VOLUME, 0x0000); /* set LFE & center volume 0dB */
ac97_reg_update(dev, AC97_SURR_VOLUME, 0x0000); /* set surround volume 0dB */
ac97_reg_update(dev, AC97_MASTER_VOLUME, 0x0000); /* set master output 0dB */
ac97_reg_update(dev, AC97_AUX_OUT_VOLUME, 0x0000); /* set aux output 0dB */
ac97_reg_update(dev, AC97_MONO_VOLUME, 0x0000); /* set mono output 0dB */
ac97_reg_update(dev, AC97_PCM_OUT_VOLUME, 0x0808); /* enable pcm-out */
ac97_reg_update(dev, AC97_CD_VOLUME, 0x0808); /* enable cd-in */
ac97_reg_update(dev, AC97_LINE_IN_VOLUME, 0x0808); /* enable line-in */
/* set record line in */
ac97_reg_update(dev, AC97_RECORD_SELECT, 0x0404);
LOG(("codec vendor id = %#08lx\n", dev->codec_id));
LOG(("codec description = %s\n", dev->codec_info));
LOG(("codec 3d enhancement = %s\n", dev->codec_3d_stereo_enhancement));
ac97_dump_capabilities(dev);
}