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[alsa-devel] Newbie questions regarding ALSA drivers
by Pharaoh . 17 May '07

17 May '07

Hi, I am very new to ALSA and just trying to get familier with the things, I have got few questions. 1. Is it true that all the OSS drivers are included only in directory linux/sound/oss and no where else? 2. There are arch specific folders like ARM, MIPS etc, so all the drivers in these folders are ALSA or OSS? 3. If I write a new driver for an OMAP based board, it should go in to linux/sound/arm/omap/ right? Or only ALSA drivers for this board should go there? 4. I have some old OSS drivers which were written for my board, do I need to make them ALSA drivers to be in line with the latest trend i.e. phasing out OSS drivers? -Pharaoh.

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[alsa-devel] Audio driver for OMAP 730 based board - hpw to migrate from OSS to ALSA
by Pharaoh . 17 May '07

17 May '07

Hi I am new here and have slight idea about the Linux audio drivers. I am working on OMAP 730 based p2-sample board. AFAIK, there is no audio driver support for this board. I have found 2.4 drivers for the same board which I have ported to 2.6, but it is an OSS driver. So, the questions: 1. Has anyone written audio drivers for the above mentioned board? Any plans to make them open source? Any pointers will be useful regarding the same. 2. How should I go about migrating the OSS driver to ALSA, if something like this is necessary? 3. Any resources which will be helpful for writing ALSA drivers? Thanks & regards, Pharaoh.

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Re: [alsa-devel] Can someone verify support for "AzTech Sound Galaxy Nova 16 Extra II-3D - using AZT-2316/R Chipset - FCC-ID:I38-MMSN846" ?
by ramkromberg＠mail.com 17 May '07

17 May '07

Yes, its like you said Rene, sb8 works although the sound is distorted and the module can't be removed... Later I can modprobe sgalaxy too, and the sound works without a hitch. Also since now I can compile some code - your "eeprom.c" compiles and works - I'm available for further testing... I also noticed that the binary you sent was 506kb while my compilation is 9kb, maybe you sent an early/later version with some additional includes for verbose ? I compiled it with "gcc -W -Wall -o eeprom eeprom.c" like you said (on my xubuntu 7.04 with build-essentials deb package installed). See attachment... Ram Kromberg ramkromberg(a)mail.com

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Re: [alsa-devel] Can someone verify support for "AzTech Sound Galaxy Nova 16 Extra II-3D - using AZT-2316/R Chipset - FCC-ID:I38-MMSN846" ?
by ramkromberg＠mail.com 17 May '07

17 May '07

You did it Rene !!! >sudo ./eeprom >sudo modprobe snd-sgalaxy sbport=0x220 wssport=0x530 It's working now !! I downloaded the binary (i didn't compile the code), chmod it, sudo it and the sgalaxy worked !!! the sb8 didn't work but I don't really care for that anyhow :-) For the record, I tested it on xubuntu 7.04 with xmms. Are you now planning to implement the code to the driver itself ? If you want me to test anything, let me know. i'm also considering installing slackware 11 since I need the preformance... THANKS !!! Ram Kromberg ramkromberg(a)mail.com

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[alsa-devel] [1/3] 2.6.22-rc1: known regressions v2
by Michal Piotrowski 16 May '07

16 May '07

Hi all, Here is a list of some known regressions in 2.6.22-rc1. Feel free to add new regressions/remove fixed etc. http://kernelnewbies.org/known_regressions Unclassified Subject : AMD k6-III/450 won't boot w/2.6.22-rc1 References : http://lkml.org/lkml/2007/5/16/192 Submitter : Bob Tracy <rct(a)gherkin.frus.com> Handled-By : Dave Jones <davej(a)codemonkey.org.uk> Status : problem is being debugged ACPI Subject : nx6125 has lost fan control References : http://lkml.org/lkml/2007/5/16/249 Submitter : Ray Lee <ray-lk(a)madrabbit.org> Status : Unknown ALSA Subject : lost snd_4236 device References : http://lkml.org/lkml/2007/5/13/87 Submitter : Pete Clements <clem(a)clem.clem-digital.net> Handled-By : Rene Herman <rene.herman(a)gmail.com> Patch : http://lkml.org/lkml/2007/5/15/23 Status : patch available Block devices Subject : loop devices limited to one single device References : http://lkml.org/lkml/2007/5/16/229 Submitter : Uwe Bugla <uwe.bugla(a)gmx.de> Status : Unknown Cryptography Subject : cryptomgr oops References : http://lkml.org/lkml/2007/5/14/283 Submitter : Luca Tettamanti <kronos.it(a)gmail.com> Handled-By : Herbert Xu <herbert(a)gondor.apana.org.au> Status : problem is being debugged Regards, Michal -- Michal K. K. Piotrowski Kernel Monkeys (http://kernel.wikidot.com/start)

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[alsa-devel] HDA: Add more systems to Sigmatel codec.
by Tobin Davis 16 May '07

16 May '07

This patch adds more Dell systems and a Panasonic laptop with Stac9200 codecs. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] HDA: Add support for Gateway NX860
by Tobin Davis 16 May '07

16 May '07

This patch adds support for the Gateway NX860 system. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] Audio DMA buffer layout
by Markus Korber 16 May '07

16 May '07

Hi, I'm working with a custom sound chip with its own DMA hardware. The figure shows how the I2S DMA expects data to be prepared: IRQ1 +----------------+ | page_3 (right) |\ +----------------+ > double buffer 1 | page_2 (left) |/ IRQ0 +----------------+ | page_1 (right) |\ +----------------+ > double buffer 0 | page_0 (left) |/ +----------------+ The hardware has 2 double buffers, each containing left and right sample regions, i.e. it alternately transmits samples from page_0 and page_1, i.e. double buffer 0, then generates an interrupt and starts transmitting page_2 and page_3. After that another interrupt is generated and the process begins again with double buffer 0. So my question is, how to tell ALSA about this memory layout? Is it possible to operate in MMAP mode with SNDRV_PCM_INFO_NONINTERLEAVED? But then, how to tell the application that it should either fill double buffer 0 or 1? Or should I use RW mode and copy samples manually to another buffer? Or something else? SG-DMA? page()-callback? Best regards, Markus Korber

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[alsa-devel] Steinberg Midex 8 driver development
by Norman Schleicher 16 May '07

16 May '07

I am currently on development for the Steinberg Midex8 USB driver. At the moment I can send notes to my Midi equipment via this device. Receiving is currently not implemented. My questions are: 1. Are there any tools to test the Alsa-Midi compatiblity ? 2. May I release some milestone results to the Alsa project ? Eg when the driver supports a small subset of send commands supported by midi. 3. What are the requirements to get released in an official alsa release package ? 4. Who is responsible for the version management ? Where can I read how the source code is organized in the repository and how to manage tags and branches for the development ?(I don't need an introduction how to use CVS, thats clear for me.) Regards Norman

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[alsa-devel] [PATCH] Add ALSA support for the SEGA Dreamcast PCM device
by Adrian McMenamin 15 May '07

15 May '07

Incorporating further small changes to tidy the code, please commit if ok. ALSA support for the SEGA Dreamcast Yamaha AICA sound device (pcm) This patch adds ALSA sound support for pcm playback on two channels on the SEGA Dreamcast built-in sound device (the Yamaha AICA) Add driver for the AICA sound device built into the SEGA Dreamcast Hook it all up with the build system. Signed-off-by: Adrian McMenamin <adrian(a)mcmen.demon.co.uk>

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