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sound: pdaudiocf: use vmalloc buffer helper functions 

Remove this duplicate of snd_pcm_alloc_vmalloc_buffer and use the
equivalent core functions instead.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch 2009-12-18 09:29:49 +01:00 committed by Takashi Iwai
parent 681b84e177
commit d20fb5dc07
1 changed files with 4 additions and 47 deletions
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51
sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
View File

@ -21,56 +21,12 @@
*/ */
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <sound/core.h> #include <sound/core.h>
#include <sound/asoundef.h> #include <sound/asoundef.h>
#include "pdaudiocf.h" #include "pdaudiocf.h"
/*
* we use a vmalloc'ed (sg-)buffer
*/
/* get the physical page pointer on the given offset */
static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, unsigned long offset)
{
void *pageptr = subs->runtime->dma_area + offset;
return vmalloc_to_page(pageptr);
}
/*
* hw_params callback
* NOTE: this may be called not only once per pcm open!
*/
static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
{
struct snd_pcm_runtime *runtime = subs->runtime;
if (runtime->dma_area) {
if (runtime->dma_bytes >= size)
return 0; /* already enough large */
vfree(runtime->dma_area);
}
runtime->dma_area = vmalloc_32_user(size);
if (! runtime->dma_area)
return -ENOMEM;
runtime->dma_bytes = size;
return 0;
}
/*
* hw_free callback
* NOTE: this may be called not only once per pcm open!
*/
static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
{
struct snd_pcm_runtime *runtime = subs->runtime;
vfree(runtime->dma_area);
runtime->dma_area = NULL;
return 0;
}
/* /*
* clear the SRAM contents * clear the SRAM contents
*/ */
@ -147,7 +103,8 @@ static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs, static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
struct snd_pcm_hw_params *hw_params) struct snd_pcm_hw_params *hw_params)
{ {
return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params)); return snd_pcm_lib_alloc_vmalloc_32_buffer
(subs, params_buffer_bytes(hw_params));
} }
/* /*
@ -155,7 +112,7 @@ static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
*/ */
static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs) static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
{ {
return snd_pcm_free_vmalloc_buffer(subs); return snd_pcm_lib_free_vmalloc_buffer(subs);
} }
/* /*
@ -319,7 +276,7 @@ static struct snd_pcm_ops pdacf_pcm_capture_ops = {
.prepare = pdacf_pcm_prepare, .prepare = pdacf_pcm_prepare,
.trigger = pdacf_pcm_trigger, .trigger = pdacf_pcm_trigger,
.pointer = pdacf_pcm_capture_pointer, .pointer = pdacf_pcm_capture_pointer,
.page = snd_pcm_get_vmalloc_page, .page = snd_pcm_lib_get_vmalloc_page,
}; };