As there is no datasheet, we can only follow the patent description https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/au88x0/au8820.h#n26
FIG. 15c is a diagrammatic block diagram of a mode register 382 of sub- buffer table 380(3) of FIG. 15b. Mode register 382 includes a check for fault flag 382(a), a had fault flag 382(b), a data format register 382(c), a read/write flag 382(d), an interrupt enable flag 382(e) and a current position register 382(f). Based upon the current sub-buffer and information about the previous value of the current sub-buffer table the CPU can determine that the peripheral has moved on to the next data segment. CPU 210 may then update the sub-buffer table. Current position register 382(f) is initially set by CPU 210 when the DMA channel is first established to indicate where to begin reading (or writing) data 150 from main memory 212 within the current data segment (e.g., 150(3)). During the process of retrieving data 150 from main memory 212, DMA engine 372 keeps track of the next location to be read from in the current data segment (e.g., 150(3)). The location of the next piece of data is stored in current position register 382(f). Thus, current position register 382(f) typically contains an offset address relative to the address of the current data segment (e.g., 150(3)). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1551041 Title: snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024 Status in alsa-driver package in Ubuntu: Triaged Bug description: Kernel oops in a new installed system, that I configuring ... ProblemType: KernelOops DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-8-generic 4.4.0-8.23 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic i686 NonfreeKernelModules: nvidia Annotation: Your system might become unstable now and might need to be restarted. ApportVersion: 2.20-0ubuntu3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: olle 1606 F.... pulseaudio /dev/snd/controlC0: olle 1606 F.... pulseaudio Date: Mon Feb 29 00:00:56 2016 Failure: oops HibernationDevice: RESUME=UUID=03bed9e9-e39b-4107-8cd6-c2612af9a6aa InstallationDate: Installed on 2016-02-28 (0 days ago) InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Alpha i386 (20160226) IwConfig: enp31s0 no wireless extensions. lo no wireless extensions. MachineType: Hewlett-Packard HP xw8400 Workstation ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic root=UUID=2160f8ed-4aa3-4243-b5d6-f87c1967e253 ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu9 RfKill: SourcePackage: linux Title: snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/09/2009 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 786D5 v02.37 dmi.board.name: 0A08h dmi.board.vendor: Hewlett-Packard dmi.board.version: NA dmi.chassis.asset.tag: CZC722497N dmi.chassis.type: 6 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr786D5v02.37:bd07/09/2009:svnHewlett-Packard:pnHPxw8400Workstation:pvr:rvnHewlett-Packard:rn0A08h:rvrNA:cvnHewlett-Packard:ct6:cvr: dmi.product.name: HP xw8400 Workstation dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1551041/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
