[alsa-devel] WM8727 & AT91SAM9G45: not enough memory

[Ankur Patel]

Dear Friends,

Atlast, I found some audio on the speaker and now able to get the
clocks after modification in setting
up the proper clock divisor. Please find the working driver at
http://pastebin.com/i5PrFxC7.

Thank you,
Ankur.

On Wed, Aug 10, 2011 at 11:17 AM, conn intel <connintel at gmail.com> wrote:
> Dear Friends,
>
> While searching further into the mailinglist I came across
> http://mailman.alsa-project.org/pipermail/alsa-devel/2010-August/031209.html
> having the similar issue.
>
> I have also tried running "cat /dev/urandom > /dev/audio" and found
> following output same as in the link above:
> # cat /dev/urandom > /dev/audio
> atmel_ssc_startup: SSC_SR=0x204
> atmel_ssc_hw_params: RCMR=00010721 RFMR=0000008f TCMR=00010702 TFMR=0000008f
> atmel_ssc_dai: Starting clock
> atmel_ssc_dai,hw_params: SSC initialized
> atmel-pcm: hw_params: DMA for SSC0 PCM out initialized
> (dma_bytes=32768, period_size=8192)
> transmit enabled SSC_SR=0x000104cf
> atmel-pcm:buffer_size = 8192,dma_area = ffac1000, dma_bytes = 32768
> atmel-pcm: trigger: period_ptr=77962000, xpr=2006319104, xcr=4096,
> xnpr=2006327296, xncr=4096
> sr=65731 imr=0
> ALSA sound/core/pcm_lib.c:1708: playback write error (DMA or IRQ trouble?)
> ALSA sound/core/pcm_lib.c:1708: playback write error (DMA or IRQ trouble?)
> cat: write error: Input/output error
> ALSA sound/core/pcm_native.c:1482: playback drain error (DMA or IRQ trouble?)
> atmel-pcm:buffer_size = 8192,dma_area = ffac1000, dma_bytes = 32768
> atmel_ssc_shutdown: transmit disabled SSC_SR=0x000000c0
> atmel_ssc_dau: Stopping clock
>
> Andras: Can you please share if you are able to solve the issue? If
> yes, where should I look into?
>
> Any suggestions/thoughts will be helpful.
>
> Have a Good Day,
> Ankur.
>
> On Tue, Aug 9, 2011 at 5:43 PM, conn intel <connintel at gmail.com> wrote:
>> Dear Friends,
>>
>> I am using WM8727 codec with AT91SAM9G45 processor. I have implemented
>> machine code as http://pastebin.com/axadqGhd .
>>
>> After insterting the module I got following output:
>> # insmod sam9g45_wm8727.ko
>> atmel-pcm:preallocate_dma_buffer: area=ffadf000, addr=77c40000, size=32768
>> asoc: WM8727 <-> atmel-ssc0 mapping ok
>>
>> I am getting following error when I tried to play the wav file using
>> command "aplay -D default sample_16.wav ":
>>
>> atmel_ssc_startup: SSC_SR=0x192
>> Playing WAVE 'sample_16.wav' : Signed 16 bit Little Endian, Rate 44100
>> Hz, Stereo
>> atmel_ssc_hw_params: RCMR=00010721 RFMR=0000008f TCMR=00010702 TFMR=0000008f
>> atmel_ssc_dai: Starting clock
>> atmel_ssc_dai,hw_params: SSC initialized
>> atmel-pcm: hw_params: DMA for SSC0 PCM out initialized
>> (dma_bytes=32768, period_size=8192)
>> transmit enabled SSC_SR=0x000104c3
>> aplayatmel_ssc_shutdown: transmit disabled SSC_SR=0x000000c3
>> :atmel_ssc_dau: Stopping clock
>>  set_params:1167: not enough memory
>>
>>
>> Does anyone throw some light where and how to solve the issue? Kindly
>> share if one needs further information.
>>
>> Have a Good Day,
>> Thank you,
>> Ankur.
>>
>