* snd_pcm_lib_malloc_pages()
@ 2007-06-11 23:49 Timur Tabi
2007-06-12 12:25 ` snd_pcm_lib_malloc_pages() Takashi Iwai
0 siblings, 1 reply; 4+ messages in thread
From: Timur Tabi @ 2007-06-11 23:49 UTC (permalink / raw)
To: Liam Girdwood, alsa-devel
(resending since I haven't gotten a reply yet)
Liam
Why do none of the ASoC drivers use snd_pcm_lib_malloc_pages()? They all allocate their
DMA buffers by hand.
--
Timur Tabi
Linux Kernel Developer @ Freescale
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: snd_pcm_lib_malloc_pages()
2007-06-11 23:49 snd_pcm_lib_malloc_pages() Timur Tabi
@ 2007-06-12 12:25 ` Takashi Iwai
0 siblings, 0 replies; 4+ messages in thread
From: Takashi Iwai @ 2007-06-12 12:25 UTC (permalink / raw)
To: Timur Tabi; +Cc: alsa-devel
At Mon, 11 Jun 2007 18:49:04 -0500,
Timur Tabi wrote:
>
> (resending since I haven't gotten a reply yet)
>
> Liam
>
> Why do none of the ASoC drivers use snd_pcm_lib_malloc_pages()? They all allocate their
> DMA buffers by hand.
Maybe because the common ALSA allocator doesn't do always good for
ARM. For example, it doesn't provide a way to allocate via
dma_alloc_writecombine().
Since long time ago, I'm inclined to get rid of ALSA common allocator
and replace with normal dma_alloc_* in each driver. But, I haven't
finished it because of lack of necessary functions like
dma_mmap_coherent() for all architectures...
Takashi
^ permalink raw reply [flat|nested] 4+ messages in thread
* snd_pcm_lib_malloc_pages()
@ 2007-06-07 22:57 Timur Tabi
2007-06-12 6:11 ` snd_pcm_lib_malloc_pages() Nobin Mathew
0 siblings, 1 reply; 4+ messages in thread
From: Timur Tabi @ 2007-06-07 22:57 UTC (permalink / raw)
To: Liam Girdwood, alsa-devel
Liam
Why do none of the ASoC drivers use snd_pcm_lib_malloc_pages()? They all allocate their
DMA buffers by hand.
--
Timur Tabi
Linux Kernel Developer @ Freescale
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-06-12 12:25 UTC | newest]
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2007-06-11 23:49 snd_pcm_lib_malloc_pages() Timur Tabi
2007-06-12 12:25 ` snd_pcm_lib_malloc_pages() Takashi Iwai
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2007-06-07 22:57 snd_pcm_lib_malloc_pages() Timur Tabi
2007-06-12 6:11 ` snd_pcm_lib_malloc_pages() Nobin Mathew
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