Messages in this thread | | | Date | Thu, 28 Jun 2012 18:05:53 +0530 | From | Laxman Dewangan <> | Subject | Re: [alsa-devel] [PATCH] ASoC: snd_dmaengine: add common api for pcm_mmap |
| |
On Thursday 28 June 2012 05:58 PM, Mark Brown wrote: > * PGP Signed by an unknown key > > On Thu, Jun 28, 2012 at 02:30:26PM +0200, Lars-Peter Clausen wrote: >> On 06/28/2012 02:18 PM, Mark Brown wrote: >>> Oh, dear - this means we don't actually have a generic API at all. Is >>> there any effort being made to make this generally available? >> Yes there is, and in fact in next/master there is generic >> dma_mmap_writecombine. I'm not quite sure how it behaves on non ARM archs >> though. But in theory it should fallback to a normal coherent mapping. Marek >> did a lot of work on this, I've put him on Cc.
So can we put the function snd_pcm_lib_writecombine_mmap() in the pcm_native.c and only export this api for ARM i.e. under macro #ifdef CONFIG_ARM so that ARM based SOCs like Tegra/epa3xx/mxs/spear can directly use that one? Or, wait for this common API until all ARCH support it?
| |