[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>

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 8c5c843099c6..c33c1c778693 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -2986,6 +2986,10 @@ static int __devinit snd_cmipci_create(struct snd_card *card, struct pci_dev *pc
 #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);