Alexander E. Patrakov wrote:
Timur Tabi wrote:
Enable mmap support in the MPC8610 ASoC driver. The driver can use ALSA's default mmap functionality, it was just not enabled previously.
Signed-off-by: Timur Tabi timur@freescale.com
[sorry, I may be completely wrong below about the .page callback purpose
- in this case, just confirm that the testcase works]
Hm, the "struct snd_pcm_ops fsl_dma_ops" doesn't contain the .page callback. With saa7134-alsa, this led to the "device claims to support mmap but actually doesn't work" bug, see the following subthread:
Isn't that an ARM chip? The default MMAP handler in ALSA doesn't support ARM, but it works for PowerPC.
http://mailman.alsa-project.org/pipermail/alsa-devel/2007-October/003773.htm...
IOW: have you actually tested that the following commands work (X,Y refer to the FSL chip)?
aplay -M -D hw:X,Y sample.wav arecord -f cd -M -D:X,Y capture.wav
I haven't tried record, but I did try playback, and it worked. Without this patch, adding -M gives me this error:
aplay: set_params:852: Access type not available
After applying this patch, playback works fine.