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Diffstat (limited to 'sound/soc/pxa/mmp-pcm.c')
-rw-r--r--sound/soc/pxa/mmp-pcm.c275
1 files changed, 0 insertions, 275 deletions
diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c
deleted file mode 100644
index 5d57e071cdf5..000000000000
--- a/sound/soc/pxa/mmp-pcm.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * 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/dma-mmp_tdma.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 <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;
-
- 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.dma_res = r;
- dma_data.ssp_id = cpu_dai->id;
-
- return snd_dmaengine_pcm_open_request_chan(substream, filter,
- &dma_data);
-}
-
-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);
-}
-
-static struct snd_pcm_ops mmp_pcm_ops = {
- .open = mmp_pcm_open,
- .close = snd_dmaengine_pcm_close_release_chan,
- .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;
-}
-
-static 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;
-}
-
-static 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 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 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 = 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");
generated by cgit (git 2.34.1) at 2025-12-25 23:13:03 +0000