aboutsummaryrefslogtreecommitdiff
path: root/sound
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2014-08-06 14:27:42 +0200
committerTakashi Iwai <tiwai@suse.de>2014-08-07 10:11:26 +0200
commitc563f473ac31c182d93f4c6ec8eb0ce199439978 (patch)
tree6c41c1530b478ebca9003b20689a575542b87bd5 /sound
parentf7ae9ba0e80dd3a359cd9e4075b7b6f8acc5a3fa (diff)
downloadlinux-stericsson-c563f473ac31c182d93f4c6ec8eb0ce199439978.tar.gz
ALSA: hda - Fix probing and stuttering on CMI8888 HD-audio controller
ASUS Phoebus with CMI8888 HD-audio chip (PCI id 13f6:5011) doesn't work with HD-audio driver as is because of some weird nature. For making DMA properly working, we need to disable MSI. The position report buffer doesn't work, thus we need to force reading LPIB instead. And yet, the codec CORB/RIRB communication gives errors unless we disable the snooping (caching). In this patch, all these workarounds are added as a quirk for the device. The HD-audio *codec* chip needs yet another workaround, but it'll be provided in the succeeding patch. Reported-and-tested-by: Vincent Lejeune <vljn@ovi.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_intel.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 5db1948699d8..aa302fb03fc5 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -265,6 +265,7 @@ enum {
AZX_DRIVER_TERA,
AZX_DRIVER_CTX,
AZX_DRIVER_CTHDA,
+ AZX_DRIVER_CMEDIA,
AZX_DRIVER_GENERIC,
AZX_NUM_DRIVERS, /* keep this as last entry */
};
@@ -330,6 +331,7 @@ static char *driver_short_names[] = {
[AZX_DRIVER_TERA] = "HDA Teradici",
[AZX_DRIVER_CTX] = "HDA Creative",
[AZX_DRIVER_CTHDA] = "HDA Creative",
+ [AZX_DRIVER_CMEDIA] = "HDA C-Media",
[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
};
@@ -1373,6 +1375,7 @@ static void azx_check_snoop_available(struct azx *chip)
snoop = false;
break;
case AZX_DRIVER_CTHDA:
+ case AZX_DRIVER_CMEDIA:
snoop = false;
break;
}
@@ -2154,6 +2157,10 @@ static const struct pci_device_id azx_ids[] = {
.driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
#endif
+ /* CM8888 */
+ { PCI_DEVICE(0x13f6, 0x5011),
+ .driver_data = AZX_DRIVER_CMEDIA |
+ AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB },
/* Vortex86MX */
{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
/* VMware HDAudio */