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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 foundhttp://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): [EMAIL PROTECTED]:/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 [EMAIL PROTECTED]:/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. |
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