[ALSA] cmipci: initialize 0x90 registers
Initialize the registers at 0x90 and 0x91 with some undocumented values.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 8c5c843..c33c1c7 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -2986,6 +2986,10 @@
#else
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_XCHGDAC);
#endif
+ if (cm->chip_version) {
+ snd_cmipci_write_b(cm, CM_REG_EXT_MISC, 0x20); /* magic */
+ snd_cmipci_write_b(cm, CM_REG_EXT_MISC + 1, 0x09); /* more magic */
+ }
/* Set Bus Master Request */
snd_cmipci_set_bit(cm, CM_REG_FUNCTRL1, CM_BREQ);