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[ALSA] cmipci: reorganize chip version detection 

Add a case for chip version 39 where no bit is set in register 0Ch, and
move the detection of version 39 before that of 8768.  This makes the
logic more compatible with the driver on that other OS.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
hifive-unleashed-5.1
Clemens Ladisch 2007-08-27 09:20:31 +02:00 committed by Jaroslav Kysela
parent c9116ae45b
commit 133271fef5
1 changed files with 20 additions and 24 deletions
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44
sound/pci/cmipci.c
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@ -2625,46 +2625,42 @@ static void __devinit query_chip(struct cmipci *cm)
if (! detect) {
/* check reg 08h, bit 24-28 */
detect = snd_cmipci_read(cm, CM_REG_CHFORMAT) & CM_CHIP_MASK1;
if (! detect) {
switch (detect) {
case 0:
cm->chip_version = 33;
cm->max_channels = 2;
if (cm->do_soft_ac3)
cm->can_ac3_sw = 1;
else
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
} else {
break;
case 1:
cm->chip_version = 37;
cm->max_channels = 2;
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
break;
default:
cm->chip_version = 39;
cm->can_ac3_hw = 1;
break;
}
cm->max_channels = 2;
cm->has_dual_dac = 1;
} else {
/* check reg 0Ch, bit 26 */
if (detect & CM_CHIP_8768) {
cm->chip_version = 68;
cm->max_channels = 8;
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
cm->can_multi_ch = 1;
} else if (detect & CM_CHIP_055) {
cm->chip_version = 55;
cm->max_channels = 6;
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
cm->can_multi_ch = 1;
} else if (detect & CM_CHIP_039) {
if (detect & CM_CHIP_039) {
cm->chip_version = 39;
if (detect & CM_CHIP_039_6CH) /* 4 or 6 channels */
cm->max_channels = 6;
else
cm->max_channels = 4;
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
cm->can_multi_ch = 1;
} else if (detect & CM_CHIP_8768) {
cm->chip_version = 68;
cm->max_channels = 8;
} else {
printk(KERN_ERR "chip %x version not supported\n", detect);
cm->chip_version = 55;
cm->max_channels = 6;
}
cm->can_ac3_hw = 1;
cm->has_dual_dac = 1;
cm->can_multi_ch = 1;
}
}