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detect double mode rates only if they are supported by the codec

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4535 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
beveloper
2003-09-07 22:27:10 +00:00
parent da47592581
commit a4f5cfda31
1 changed files with 14 additions and 6 deletions
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src/add-ons/kernel/drivers/audio/ac97/ich/ac97.c
+14 -6
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@@ -177,6 +177,8 @@ codec_table codecs[] =
{ 0x00000000, 0x00000000, default_init, "Unknown" } /* must be last one, matches every codec */
};
codec_table *find_codec_table(uint32 codecid);
codec_table *
find_codec_table(uint32 codecid)
{
@@ -478,12 +480,18 @@ ac97_detect_rates(ac97_dev *dev)
dev->capabilities |= CAP_PCM_RATE_44100;
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 48000))
dev->capabilities |= CAP_PCM_RATE_48000;
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 48000))
dev->capabilities |= CAP_PCM_RATE_48000;
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 88200))
dev->capabilities |= CAP_PCM_RATE_88200;
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 96000))
dev->capabilities |= CAP_PCM_RATE_96000;
if (dev->capabilities & CAP_DOUBLE_PCM) {
// enable double rate mode
if (ac97_reg_update_bits(dev, AC97_EXTENDED_STAT_CTRL, 0x0002, 0x0002)) {
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 88200))
dev->capabilities |= CAP_PCM_RATE_88200;
if (ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, 96000))
dev->capabilities |= CAP_PCM_RATE_96000;
// disable double rate mode
ac97_reg_update_bits(dev, AC97_EXTENDED_STAT_CTRL, 0x0002, 0x0000);
}
}
ac97_set_rate(dev, AC97_PCM_FRONT_DAC_RATE, oldrate);
}