Vova Barinov wrote:
> 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.
>
Excerpt from dmesg:
Advanced Linux Sound Architecture Driver Version 1.0.16.
ASoC version 0.13.2
AIC3X Audio Codec 0.1
asoc: aic3x <-> davinci-i2s mapping ok
ALSA device list:
#0: DaVinci EVM (aic3x)
/proc/interrupts:
CPU0
6: 0 AINTC dm644xresizer
8: 23608 AINTC davincifb
13: 6995 AINTC EMAC
22: 107 AINTC ide0
32: 39436 AINTC clockevent
33: 3 AINTC free-run counter
39: 217 AINTC i2c_davinci
40: 204 AINTC serial
Err: 0
This is the DM6446 EVM. Note, my kernel has been patched with
latest ALSA, to no avail. I hear the DAC pop during initialization
on both the Line Out and Headphone jacks.
>> 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.
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
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>>>> Davinci-linux-open-source@xxxxxxxxxxxxxxxxxxxx
>>>> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
>>>>
>>>>
>>>>
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>>>
>>>
>>
>>
>
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