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ALSA: Remove old DMA-mmap code from arm/devdma.c

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The call of dma_mmap_coherent() is done in the PCM core now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-11-26 15:08:54 +01:00
parent 6985c8877a
commit d679732223
4 changed files with 6 additions and 95 deletions
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2
sound/arm/Makefile
View file

@ -3,7 +3,7 @@
#
obj-$(CONFIG_SND_ARMAACI) += snd-aaci.o
snd-aaci-objs := aaci.o devdma.o
snd-aaci-objs := aaci.o
obj-$(CONFIG_SND_PXA2XX_PCM) += snd-pxa2xx-pcm.o
snd-pxa2xx-pcm-objs := pxa2xx-pcm.o

16
sound/arm/aaci.c
View file

@ -30,7 +30,6 @@
#include <sound/pcm_params.h>
#include "aaci.h"
#include "devdma.h"
#define DRIVER_NAME "aaci-pl041"
@ -492,7 +491,7 @@ static int aaci_pcm_hw_free(struct snd_pcm_substream *substream)
/*
* Clear out the DMA and any allocated buffers.
*/
devdma_hw_free(NULL, substream);
snd_pcm_lib_free_pages(substream);
return 0;
}
@ -505,8 +504,8 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,
aaci_pcm_hw_free(substream);
err = devdma_hw_alloc(NULL, substream,
params_buffer_bytes(params));
err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(params));
if (err < 0)
goto out;
@ -551,11 +550,6 @@ static snd_pcm_uframes_t aaci_pcm_pointer(struct snd_pcm_substream *substream)
return bytes_to_frames(runtime, bytes);
}
static int aaci_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma)
{
return devdma_mmap(NULL, substream, vma);
}
/*
* Playback specific ALSA stuff
@ -722,7 +716,6 @@ static struct snd_pcm_ops aaci_playback_ops = {
.prepare = aaci_pcm_prepare,
.trigger = aaci_pcm_playback_trigger,
.pointer = aaci_pcm_pointer,
.mmap = aaci_pcm_mmap,
};
static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,
@ -850,7 +843,6 @@ static struct snd_pcm_ops aaci_capture_ops = {
.prepare = aaci_pcm_capture_prepare,
.trigger = aaci_pcm_capture_trigger,
.pointer = aaci_pcm_pointer,
.mmap = aaci_pcm_mmap,
};
/*
@ -1040,6 +1032,8 @@ static int __devinit aaci_init_pcm(struct aaci *aaci)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &aaci_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &aaci_capture_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
NULL, 0, 64 * 104);
}
return ret;

80
sound/arm/devdma.c
View file

@ -1,80 +0,0 @@
/*
* linux/sound/arm/devdma.c
*
* Copyright (C) 2003-2004 Russell King, All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* ARM DMA shim for ALSA.
*/
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include "devdma.h"
void devdma_hw_free(struct device *dev, struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *buf = runtime->dma_buffer_p;
if (runtime->dma_area == NULL)
return;
if (buf != &substream->dma_buffer) {
dma_free_coherent(buf->dev.dev, buf->bytes, buf->area, buf->addr);
kfree(runtime->dma_buffer_p);
}
snd_pcm_set_runtime_buffer(substream, NULL);
}
int devdma_hw_alloc(struct device *dev, struct snd_pcm_substream *substream, size_t size)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *buf = runtime->dma_buffer_p;
int ret = 0;
if (buf) {
if (buf->bytes >= size)
goto out;
devdma_hw_free(dev, substream);
}
if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) {
buf = &substream->dma_buffer;
} else {
buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL);
if (!buf)
goto nomem;
buf->dev.type = SNDRV_DMA_TYPE_DEV;
buf->dev.dev = dev;
buf->area = dma_alloc_coherent(dev, size, &buf->addr, GFP_KERNEL);
buf->bytes = size;
buf->private_data = NULL;
if (!buf->area)
goto free;
}
snd_pcm_set_runtime_buffer(substream, buf);
ret = 1;
out:
runtime->dma_bytes = size;
return ret;
free:
kfree(buf);
nomem:
return -ENOMEM;
}
int devdma_mmap(struct device *dev, struct snd_pcm_substream *substream, struct vm_area_struct *vma)
{
struct snd_pcm_runtime *runtime = substream->runtime;
return dma_mmap_coherent(dev, vma, runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
}

3
sound/arm/devdma.h
View file

@ -1,3 +0,0 @@
void devdma_hw_free(struct device *dev, struct snd_pcm_substream *substream);
int devdma_hw_alloc(struct device *dev, struct snd_pcm_substream *substream, size_t size);
int devdma_mmap(struct device *dev, struct snd_pcm_substream *substream, struct vm_area_struct *vma);