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ALSA: Clean up SG-buffer helper functions and macros

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Clean up SG-buffer helper functions and macros.  Helpers take substream
as arguments now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai
2008-08-21 13:00:13 +02:00
committed by Jaroslav Kysela
parent 46480b3a5f
commit 77a23f2695
15 changed files with 91 additions and 103 deletions
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14
sound/pci/echoaudio/echoaudio.c
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@@ -490,7 +490,6 @@ static int init_engine(struct snd_pcm_substream *substream,
{
struct echoaudio *chip;
int err, per, rest, page, edge, offs;
struct snd_sg_buf *sgbuf;
struct audiopipe *pipe;
chip = snd_pcm_substream_chip(substream);
@@ -531,10 +530,6 @@ static int init_engine(struct snd_pcm_substream *substream,
return err;
}
sgbuf = snd_pcm_substream_sgbuf(substream);
DE_HWP(("pcm_hw_params table size=%d pages=%d\n",
sgbuf->size, sgbuf->pages));
sglist_init(chip, pipe);
edge = PAGE_SIZE;
for (offs = page = per = 0; offs < params_buffer_bytes(hw_params);
@@ -543,16 +538,15 @@ static int init_engine(struct snd_pcm_substream *substream,
if (offs + rest > params_buffer_bytes(hw_params))
rest = params_buffer_bytes(hw_params) - offs;
while (rest) {
dma_addr_t addr;
addr = snd_pcm_sgbuf_get_addr(substream, offs);
if (rest <= edge - offs) {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
rest);
sglist_add_mapping(chip, pipe, addr, rest);
sglist_add_irq(chip, pipe);
offs += rest;
rest = 0;
} else {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
sglist_add_mapping(chip, pipe, addr,
edge - offs);
rest -= edge - offs;
offs = edge;