Forwarded from davinci-linux-open-source list: I've built this ASoC patch into my DaVinci git kernel (thanks for the SENSORS tip), and can use aplay and speaker-test, but no sound. Figured it may be a mixer/volume control issue, but the alsamixer is unable to open for a failed ioctl on USBDEVFS_IOCTL. Not sure why there is a USB dependency. Noted that there is no /sys/class/sound/mixer in my sysfs. Any ideas? Mark Bernard Blackham wrote: > Behme wrote: > >> While searching something different, I just found >> >> http://www.spinics.net/lists/alsa-devel/msg12535.html >> >> As I'm not subscribed to alsa-devel, I don't have the original post. >> Maybe any of the authors can post it do this list as well? >> >> The patch mainly applies to our git. I fixed two small rejects in >> Kconfig and Makefile as the patch is for newer kernel than our git. >> Untested patch against our git in attachment. Anybody likes to test? >> > > Well, I tried compiling it and it failed to build. It appears that it's > built on a set of patches for Davinci posted to LAK, including this > completely revamped EDMA support[1]: > > http://www.spinics.net/lists/arm-kernel/msg47450.html > > So I had to change a few definitions, import a few functions from the new > DMA support and managed to get it compiling and loading, but not yet working > (tried various sample rates and formats): > > root@davinci-dvevm:/tst$ aplay test.wav > Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo > ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable > aplay: set_params:878: Broken configuration for this PCM: no configurations > available > > root@davinci-dvevm:/tst$ arecord -r 48000 -f S16_LE > Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono > ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable > arecord: set_params:878: Broken configuration for this PCM: no > configurations available > > > And this is the extent of my knowledge of ALSA - I can continue digging, but > maybe somebody else will beat me to it =) It's looking promising though. > > Attached is the patch I have so far that applies against current git. This > is not for going upstream, but just for testing. Notes: > - Apply patch > - Enable SND_SOC, SND_DAVINCI_SOC, SND_DAVINCI_SOC_I2S, SND_DAVINCI_SOC_EVM > and SND_SOC_TLV320AIC3X. > - Make sure CONFIG_I2C_DAVINCI is enabled, but disable the > CONFIG_SENSORS_TLV320* options. > - Build. > - Load the snd-soc-evm module. > > Bernard. > > [1] These patches appear to have gone absolutely nowhere beyond that list. I > can't find them in any tree. But they are cleaner and more conforming to the > Linux Kernel style than what's currently in git. > > > ------------------------------------------------------------------------ > > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@xxxxxxxxxxxxxxxxxxxx > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
