mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-22 09:22:37 +00:00
ASoC: mmp: add audio dma support
mmp-pcm handle audio dma based on soc-dmaengine Support mmp and pxa910 Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: Leo Yan <leoy@marvell.com> Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Zhangfei Gao
Mark Brown
parent
8994a5e1d2
commit
7a824e214e
22
include/linux/platform_data/mmp_audio.h
Normal file
22
include/linux/platform_data/mmp_audio.h
Normal file
@ -0,0 +1,22 @@
|
||||
/*
|
||||
* MMP Platform AUDIO Management
|
||||
*
|
||||
* Copyright (c) 2011 Marvell Semiconductors Inc.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef MMP_AUDIO_H
|
||||
#define MMP_AUDIO_H
|
||||
|
||||
struct mmp_audio_platdata {
|
||||
u32 period_max_capture;
|
||||
u32 buffer_max_capture;
|
||||
u32 period_max_playback;
|
||||
u32 buffer_max_playback;
|
||||
};
|
||||
|
||||
#endif /* MMP_AUDIO_H */
|
||||
@ -8,6 +8,15 @@ config SND_PXA2XX_SOC
|
||||
the PXA2xx AC97, I2S or SSP interface. You will also need
|
||||
to select the audio interfaces to support below.
|
||||
|
||||
config SND_MMP_SOC
|
||||
bool "Soc Audio for Marvell MMP chips"
|
||||
depends on ARCH_MMP
|
||||
select SND_SOC_DMAENGINE_PCM
|
||||
select SND_ARM
|
||||
help
|
||||
Say Y if you want to add support for codecs attached to
|
||||
the MMP SSPA interface.
|
||||
|
||||
config SND_PXA2XX_AC97
|
||||
tristate
|
||||
select SND_AC97_CODEC
|
||||
|
||||
@ -3,11 +3,13 @@ snd-soc-pxa2xx-objs := pxa2xx-pcm.o
|
||||
snd-soc-pxa2xx-ac97-objs := pxa2xx-ac97.o
|
||||
snd-soc-pxa2xx-i2s-objs := pxa2xx-i2s.o
|
||||
snd-soc-pxa-ssp-objs := pxa-ssp.o
|
||||
snd-soc-mmp-objs := mmp-pcm.o
|
||||
|
||||
obj-$(CONFIG_SND_PXA2XX_SOC) += snd-soc-pxa2xx.o
|
||||
obj-$(CONFIG_SND_PXA2XX_SOC_AC97) += snd-soc-pxa2xx-ac97.o
|
||||
obj-$(CONFIG_SND_PXA2XX_SOC_I2S) += snd-soc-pxa2xx-i2s.o
|
||||
obj-$(CONFIG_SND_PXA_SOC_SSP) += snd-soc-pxa-ssp.o
|
||||
obj-$(CONFIG_SND_MMP_SOC) += snd-soc-mmp.o
|
||||
|
||||
# PXA Machine Support
|
||||
snd-soc-corgi-objs := corgi.o
|
||||
|
||||
297
sound/soc/pxa/mmp-pcm.c
Normal file
297
sound/soc/pxa/mmp-pcm.c
Normal file
@ -0,0 +1,297 @@
|
||||
/*
|
||||
* linux/sound/soc/pxa/mmp-pcm.c
|
||||
*
|
||||
* Copyright (C) 2011 Marvell International Ltd.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
*/
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/dmaengine.h>
|
||||
#include <linux/platform_data/mmp_audio.h>
|
||||
#include <sound/pxa2xx-lib.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
#include <sound/soc.h>
|
||||
#include <mach/sram.h>
|
||||
#include <sound/dmaengine_pcm.h>
|
||||
|
||||
struct mmp_dma_data {
|
||||
int ssp_id;
|
||||
struct resource *dma_res;
|
||||
};
|
||||
|
||||
#define MMP_PCM_INFO (SNDRV_PCM_INFO_MMAP | \
|
||||
SNDRV_PCM_INFO_MMAP_VALID | \
|
||||
SNDRV_PCM_INFO_INTERLEAVED | \
|
||||
SNDRV_PCM_INFO_PAUSE | \
|
||||
SNDRV_PCM_INFO_RESUME)
|
||||
|
||||
#define MMP_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
|
||||
SNDRV_PCM_FMTBIT_S24_LE | \
|
||||
SNDRV_PCM_FMTBIT_S32_LE)
|
||||
|
||||
static struct snd_pcm_hardware mmp_pcm_hardware[] = {
|
||||
{
|
||||
.info = MMP_PCM_INFO,
|
||||
.formats = MMP_PCM_FORMATS,
|
||||
.period_bytes_min = 1024,
|
||||
.period_bytes_max = 2048,
|
||||
.periods_min = 2,
|
||||
.periods_max = 32,
|
||||
.buffer_bytes_max = 4096,
|
||||
.fifo_size = 32,
|
||||
},
|
||||
{
|
||||
.info = MMP_PCM_INFO,
|
||||
.formats = MMP_PCM_FORMATS,
|
||||
.period_bytes_min = 1024,
|
||||
.period_bytes_max = 2048,
|
||||
.periods_min = 2,
|
||||
.periods_max = 32,
|
||||
.buffer_bytes_max = 4096,
|
||||
.fifo_size = 32,
|
||||
},
|
||||
};
|
||||
|
||||
static int mmp_pcm_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params)
|
||||
{
|
||||
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct pxa2xx_pcm_dma_params *dma_params;
|
||||
struct dma_slave_config slave_config;
|
||||
int ret;
|
||||
|
||||
dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
|
||||
if (!dma_params)
|
||||
return 0;
|
||||
|
||||
ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
slave_config.dst_addr = dma_params->dev_addr;
|
||||
slave_config.dst_maxburst = 4;
|
||||
} else {
|
||||
slave_config.src_addr = dma_params->dev_addr;
|
||||
slave_config.src_maxburst = 4;
|
||||
}
|
||||
|
||||
ret = dmaengine_slave_config(chan, &slave_config);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static bool filter(struct dma_chan *chan, void *param)
|
||||
{
|
||||
struct mmp_dma_data *dma_data = param;
|
||||
bool found = false;
|
||||
char *devname;
|
||||
|
||||
devname = kasprintf(GFP_KERNEL, "%s.%d", dma_data->dma_res->name,
|
||||
dma_data->ssp_id);
|
||||
if ((strcmp(dev_name(chan->device->dev), devname) == 0) &&
|
||||
(chan->chan_id == dma_data->dma_res->start)) {
|
||||
found = true;
|
||||
}
|
||||
|
||||
kfree(devname);
|
||||
return found;
|
||||
}
|
||||
|
||||
static int mmp_pcm_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct platform_device *pdev = to_platform_device(rtd->platform->dev);
|
||||
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
||||
struct mmp_dma_data *dma_data;
|
||||
struct resource *r;
|
||||
int ret;
|
||||
|
||||
r = platform_get_resource(pdev, IORESOURCE_DMA, substream->stream);
|
||||
if (!r)
|
||||
return -EBUSY;
|
||||
|
||||
snd_soc_set_runtime_hwparams(substream,
|
||||
&mmp_pcm_hardware[substream->stream]);
|
||||
dma_data = devm_kzalloc(&pdev->dev,
|
||||
sizeof(struct mmp_dma_data), GFP_KERNEL);
|
||||
if (dma_data == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
dma_data->dma_res = r;
|
||||
dma_data->ssp_id = cpu_dai->id;
|
||||
|
||||
ret = snd_dmaengine_pcm_open(substream, filter, dma_data);
|
||||
if (ret) {
|
||||
devm_kfree(&pdev->dev, dma_data);
|
||||
return ret;
|
||||
}
|
||||
|
||||
snd_dmaengine_pcm_set_data(substream, dma_data);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mmp_pcm_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct mmp_dma_data *dma_data = snd_dmaengine_pcm_get_data(substream);
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct platform_device *pdev = to_platform_device(rtd->platform->dev);
|
||||
|
||||
snd_dmaengine_pcm_close(substream);
|
||||
devm_kfree(&pdev->dev, dma_data);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mmp_pcm_mmap(struct snd_pcm_substream *substream,
|
||||
struct vm_area_struct *vma)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
unsigned long off = vma->vm_pgoff;
|
||||
|
||||
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
||||
return remap_pfn_range(vma, vma->vm_start,
|
||||
__phys_to_pfn(runtime->dma_addr) + off,
|
||||
vma->vm_end - vma->vm_start, vma->vm_page_prot);
|
||||
}
|
||||
|
||||
struct snd_pcm_ops mmp_pcm_ops = {
|
||||
.open = mmp_pcm_open,
|
||||
.close = mmp_pcm_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = mmp_pcm_hw_params,
|
||||
.trigger = snd_dmaengine_pcm_trigger,
|
||||
.pointer = snd_dmaengine_pcm_pointer,
|
||||
.mmap = mmp_pcm_mmap,
|
||||
};
|
||||
|
||||
static void mmp_pcm_free_dma_buffers(struct snd_pcm *pcm)
|
||||
{
|
||||
struct snd_pcm_substream *substream;
|
||||
struct snd_dma_buffer *buf;
|
||||
int stream;
|
||||
struct gen_pool *gpool;
|
||||
|
||||
gpool = sram_get_gpool("asram");
|
||||
if (!gpool)
|
||||
return;
|
||||
|
||||
for (stream = 0; stream < 2; stream++) {
|
||||
size_t size = mmp_pcm_hardware[stream].buffer_bytes_max;
|
||||
|
||||
substream = pcm->streams[stream].substream;
|
||||
if (!substream)
|
||||
continue;
|
||||
|
||||
buf = &substream->dma_buffer;
|
||||
if (!buf->area)
|
||||
continue;
|
||||
gen_pool_free(gpool, (unsigned long)buf->area, size);
|
||||
buf->area = NULL;
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
static int mmp_pcm_preallocate_dma_buffer(struct snd_pcm_substream *substream,
|
||||
int stream)
|
||||
{
|
||||
struct snd_dma_buffer *buf = &substream->dma_buffer;
|
||||
size_t size = mmp_pcm_hardware[stream].buffer_bytes_max;
|
||||
struct gen_pool *gpool;
|
||||
|
||||
buf->dev.type = SNDRV_DMA_TYPE_DEV;
|
||||
buf->dev.dev = substream->pcm->card->dev;
|
||||
buf->private_data = NULL;
|
||||
|
||||
gpool = sram_get_gpool("asram");
|
||||
if (!gpool)
|
||||
return -ENOMEM;
|
||||
|
||||
buf->area = (unsigned char *)gen_pool_alloc(gpool, size);
|
||||
if (!buf->area)
|
||||
return -ENOMEM;
|
||||
buf->addr = gen_pool_virt_to_phys(gpool, (unsigned long)buf->area);
|
||||
buf->bytes = size;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int mmp_pcm_new(struct snd_soc_pcm_runtime *rtd)
|
||||
{
|
||||
struct snd_pcm_substream *substream;
|
||||
struct snd_pcm *pcm = rtd->pcm;
|
||||
int ret = 0, stream;
|
||||
|
||||
for (stream = 0; stream < 2; stream++) {
|
||||
substream = pcm->streams[stream].substream;
|
||||
|
||||
ret = mmp_pcm_preallocate_dma_buffer(substream, stream);
|
||||
if (ret)
|
||||
goto err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
mmp_pcm_free_dma_buffers(pcm);
|
||||
return ret;
|
||||
}
|
||||
|
||||
struct snd_soc_platform_driver mmp_soc_platform = {
|
||||
.ops = &mmp_pcm_ops,
|
||||
.pcm_new = mmp_pcm_new,
|
||||
.pcm_free = mmp_pcm_free_dma_buffers,
|
||||
};
|
||||
|
||||
static __devinit int mmp_pcm_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mmp_audio_platdata *pdata = pdev->dev.platform_data;
|
||||
|
||||
if (pdata) {
|
||||
mmp_pcm_hardware[SNDRV_PCM_STREAM_PLAYBACK].buffer_bytes_max =
|
||||
pdata->buffer_max_playback;
|
||||
mmp_pcm_hardware[SNDRV_PCM_STREAM_PLAYBACK].period_bytes_max =
|
||||
pdata->period_max_playback;
|
||||
mmp_pcm_hardware[SNDRV_PCM_STREAM_CAPTURE].buffer_bytes_max =
|
||||
pdata->buffer_max_capture;
|
||||
mmp_pcm_hardware[SNDRV_PCM_STREAM_CAPTURE].period_bytes_max =
|
||||
pdata->period_max_capture;
|
||||
}
|
||||
return snd_soc_register_platform(&pdev->dev, &mmp_soc_platform);
|
||||
}
|
||||
|
||||
static int __devexit mmp_pcm_remove(struct platform_device *pdev)
|
||||
{
|
||||
snd_soc_unregister_platform(&pdev->dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver mmp_pcm_driver = {
|
||||
.driver = {
|
||||
.name = "mmp-pcm-audio",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
|
||||
.probe = mmp_pcm_probe,
|
||||
.remove = __devexit_p(mmp_pcm_remove),
|
||||
};
|
||||
|
||||
module_platform_driver(mmp_pcm_driver);
|
||||
|
||||
MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
|
||||
MODULE_DESCRIPTION("MMP Soc Audio DMA module");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user