Mark Brown wrote: > On Fri, Mar 28, 2008 at 09:27:04AM -0500, lokowich wrote: > > >> Forwarded from davinci-linux-open-source list: >> > > CCing in Vladimir Barinov who contributed the DaVinci support. > > >> 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? >> How do you figure out that you can play sound? Also what platform do you use - is it Davinci-EVM? what line output do you use to hear the sound? Please, post your dmesg log and cat /proc/interrupts too. > > It might be helpful to post dmesg output showing the sound support > being loaded > >> 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 >>> Yep, it's needed. >>> 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 >> >> > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
