From: "Mathieu Rondonneau" <mathieu.rondonneau@polymtl.ca>
To: alsa-devel@lists.sourceforge.net
Subject: Using preallocate pci, isa or nothing?
Date: Sun, 8 Feb 2004 18:29:10 -0600 [thread overview]
Message-ID: <009601c3eea3$bca696e0$c4f9cb18@win2K> (raw)
Hi,
I'm sorry for the html format, these are some questions according to my
problems.
I'm writing an ALSA driver for a CSB337 board (AT91RM9200). There is no PCI
or ISA on this board. Should I preallocate memory with:
snd_pcm_lib_preallocate_pages_for_all,
snd_pcm_lib_preallocate_isa_pages_for_all() or
snd_pcm_lib_preallocate_pci_pages_for_all()?
There is a specific DMA (PDC) on the AT91RM9200, so i'm trying to use
snd_pcm_lib_preallocate_pages_for_all() but seems complicated to understand
what is needed by the ALSA pcm and what i have to write.
What does the function snd_..._pointer() mean? should i need it if i don't
use ISA or PCI mecanism?
What does the function snd_pcm_period_elapsed() mean? Should i need it if i
don't use ISA or PCI mecanism?
Thanks
any help would be very appreciate.
Mathieu Rondonneau
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next reply other threads:[~2004-02-09 0:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-09 0:29 Mathieu Rondonneau [this message]
2004-02-11 12:25 ` Using preallocate pci, isa or nothing? Takashi Iwai
2004-02-11 20:39 ` Mathieu Rondonneau
2004-02-11 19:49 ` Takashi Iwai
-- strict thread matches above, loose matches on Subject: below --
2004-02-07 2:45 using " Mathieu Rondonneau
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