Timur Tabi wrote: > Alexander E. Patrakov wrote: >> 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. saa7134 is a Philips chip that you'll find in many TV tuners. As for the .page logic, my question was indeed stupid. I should have read the snd_pcm_mmap_data_nopage() function and notice that, by default, it wants to do this: vaddr = runtime->dma_area + offset; page = virt_to_page(vaddr); and saa7134 wants to use vmalloc_to_page() instead of virt_to_page() due to the way it allocates the DMA buffer. > 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. Good! -- Alexander E. Patrakov _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
