2012/1/11 Alexander Motin <m...@freebsd.org>
> Hi. > > I would like request for testing of my work on further HDA sound driver > improvement. > > List of changes done this time: > - Huge old hdac driver was split into three independent pieces: HDA > controller driver (hdac), HDA CODEC driver (hdacc) and HDA sudio function > driver (hdaa). All drivers are completely independent and talk to each > other only via NewBus interfaces. Using more NewBus bells and whistles > allows to properly see HDA structure with standard system instruments, such > as `devinfo -v`. Biggest driver file size now is 150K, instead of 240K > before, and the code is much more clean. > - Support for multichannel recording was added. While I've never seen it > configured by default, UAA specification tells that it is possible. Now, as > specification defines, driver checks input associations for pins with > sequence numbers 14 and 15, and if found (usually) -- works as before, > mixing signals together. If it doesn't, it configures input association as > multichannel. I've found some CODECs doing strange things when configured > for multichannel recording, but I've also found successfully working > examples. > - Signal tracer was improved to look for cases where several DACs/ADCs in > CODEC can work with the same audio signal. If such case found, driver > registers additional playback/record stream (channel) for the pcm device. > Having more then one stream allows to avoid vchans use and so avoid extra > conversion to pre-configured vchan rate and sample format. Not many CODECs > allow this, especially on playback, but some do. > - New controller streams reservation mechanism was implemented. That > allows to have more pcm devices then streams supported by the controller > (usually 4 in each direction). Now it limits only number of > _simultaneously_ transferred audio streams, that is rarely reachable and > properly reported if happens. > - Codec pins and GPIO signals configuration was exported via set of > writable sysctls. Another sysctl dev.hdaa.X.reconfig allows to trigger > driver reconfiguration in run-time. The only requirement is that all pcm > devices should be closed at the moment, as they will be destroyed and > recreated. This should significantly simplify process of fixing CODEC > configuration. It should be possible now even to write GUI to do it with > few mouse clicks. > - Driver now decodes pins location and connector type names. In some > cases it allows to hint user where on the system case connectors, related > to the pcm device, are located. Number of channels supported by pcm device, > reported now (if it is not 2), should also make search easier. > - Added fix for digital mic recording on some Asus laptops/netbooks. > > That is how it may look now in dmesg: > > hdac0: <Intel 5 Series/3400 Series HDA Controller> mem > 0xf7ef4000-0xf7ef7fff irq 22 at device 27.0 on pci0 > hdacc0: <VIA VT1708S_0 HDA CODEC> at cad 0 on hdac0 > hdaa0: <VIA VT1708S_0 HDA CODEC Audio Function Group> at nid 1 on hdacc0 > hdacc1: <Intel Ibex Peak HDA CODEC> at cad 3 on hdac0 > hdaa1: <Intel Ibex Peak HDA CODEC Audio Function Group> at nid 1 on hdacc1 > pcm0: <VIA VT1708S_0 HDA CODEC PCM (Analog)> at nid 28,29 and 26,30,27 on > hdaa0 > pcm1: <VIA VT1708S_0 HDA CODEC PCM (Digital)> at nid 32 on hdaa0 > pcm2: <Intel Ibex Peak HDA CODEC PCM (DisplayPort 8ch)> at nid 6 on hdaa1 > > Patch can be found here: > http://people.freebsd.org/~**mav/hda.rewrite.patch<http://people.freebsd.org/~mav/hda.rewrite.patch> > > Patch was generated for 10-CURRENT, but should apply to fresh 9-STABLE and > 8-STABLE branches also. > > Special thanks to iXsystems, Inc. for supporting this work. > > Comments and tests results are welcome! > > to much work for me to get it work on 8-STABLE (missing MFC of r227701, r227849 and other things) so i'll update my htpc to 9-STABLE. _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
