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Diffstat (limited to 'sound/soc/ep93xx/ep93xx-pcm.c')
-rw-r--r--sound/soc/ep93xx/ep93xx-pcm.c242
1 files changed, 0 insertions, 242 deletions
diff --git a/sound/soc/ep93xx/ep93xx-pcm.c b/sound/soc/ep93xx/ep93xx-pcm.c
deleted file mode 100644
index 4eea98b42bc8..000000000000
--- a/sound/soc/ep93xx/ep93xx-pcm.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * linux/sound/arm/ep93xx-pcm.c - EP93xx ALSA PCM interface
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- * Copyright (C) 2006 Applied Data Systems
- *
- * Rewritten for the SoC audio subsystem (Based on PXA2xx code):
- * Copyright (c) 2008 Ryan Mallon
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-#include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/dmaengine_pcm.h>
-
-#include <mach/dma.h>
-#include <mach/hardware.h>
-#include <mach/ep93xx-regs.h>
-
-#include "ep93xx-pcm.h"
-
-static const struct snd_pcm_hardware ep93xx_pcm_hardware = {
- .info = (SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER),
-
- .rates = SNDRV_PCM_RATE_8000_192000,
- .rate_min = SNDRV_PCM_RATE_8000,
- .rate_max = SNDRV_PCM_RATE_192000,
-
- .formats = (SNDRV_PCM_FMTBIT_S16_LE |
- SNDRV_PCM_FMTBIT_S24_LE |
- SNDRV_PCM_FMTBIT_S32_LE),
-
- .buffer_bytes_max = 131072,
- .period_bytes_min = 32,
- .period_bytes_max = 32768,
- .periods_min = 1,
- .periods_max = 32,
- .fifo_size = 32,
-};
-
-static bool ep93xx_pcm_dma_filter(struct dma_chan *chan, void *filter_param)
-{
- struct ep93xx_dma_data *data = filter_param;
-
- if (data->direction == ep93xx_dma_chan_direction(chan)) {
- chan->private = data;
- return true;
- }
-
- return false;
-}
-
-static int ep93xx_pcm_open(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct ep93xx_pcm_dma_params *dma_params;
- struct ep93xx_dma_data *dma_data;
- int ret;
-
- snd_soc_set_runtime_hwparams(substream, &ep93xx_pcm_hardware);
-
- dma_data = kmalloc(sizeof(*dma_data), GFP_KERNEL);
- if (!dma_data)
- return -ENOMEM;
-
- dma_params = snd_soc_dai_get_dma_data(cpu_dai, substream);
- dma_data->port = dma_params->dma_port;
- dma_data->name = dma_params->name;
- dma_data->direction = snd_pcm_substream_to_dma_direction(substream);
-
- ret = snd_dmaengine_pcm_open(substream, ep93xx_pcm_dma_filter, dma_data);
- if (ret) {
- kfree(dma_data);
- return ret;
- }
-
- snd_dmaengine_pcm_set_data(substream, dma_data);
-
- return 0;
-}
-
-static int ep93xx_pcm_close(struct snd_pcm_substream *substream)
-{
- struct dma_data *dma_data = snd_dmaengine_pcm_get_data(substream);
-
- snd_dmaengine_pcm_close(substream);
- kfree(dma_data);
- return 0;
-}
-
-static int ep93xx_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
- return 0;
-}
-
-static int ep93xx_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- snd_pcm_set_runtime_buffer(substream, NULL);
- return 0;
-}
-
-static int ep93xx_pcm_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
-
- return dma_mmap_writecombine(substream->pcm->card->dev, vma,
- runtime->dma_area,
- runtime->dma_addr,
- runtime->dma_bytes);
-}
-
-static struct snd_pcm_ops ep93xx_pcm_ops = {
- .open = ep93xx_pcm_open,
- .close = ep93xx_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = ep93xx_pcm_hw_params,
- .hw_free = ep93xx_pcm_hw_free,
- .trigger = snd_dmaengine_pcm_trigger,
- .pointer = snd_dmaengine_pcm_pointer_no_residue,
- .mmap = ep93xx_pcm_mmap,
-};
-
-static int ep93xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
-{
- struct snd_pcm_substream *substream = pcm->streams[stream].substream;
- struct snd_dma_buffer *buf = &substream->dma_buffer;
- size_t size = ep93xx_pcm_hardware.buffer_bytes_max;
-
- buf->dev.type = SNDRV_DMA_TYPE_DEV;
- buf->dev.dev = pcm->card->dev;
- buf->private_data = NULL;
- buf->area = dma_alloc_writecombine(pcm->card->dev, size,
- &buf->addr, GFP_KERNEL);
- buf->bytes = size;
-
- return (buf->area == NULL) ? -ENOMEM : 0;
-}
-
-static void ep93xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
-{
- struct snd_pcm_substream *substream;
- struct snd_dma_buffer *buf;
- int stream;
-
- for (stream = 0; stream < 2; stream++) {
- substream = pcm->streams[stream].substream;
- if (!substream)
- continue;
-
- buf = &substream->dma_buffer;
- if (!buf->area)
- continue;
-
- dma_free_writecombine(pcm->card->dev, buf->bytes, buf->area,
- buf->addr);
- buf->area = NULL;
- }
-}
-
-static u64 ep93xx_pcm_dmamask = DMA_BIT_MASK(32);
-
-static int ep93xx_pcm_new(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_card *card = rtd->card->snd_card;
- struct snd_pcm *pcm = rtd->pcm;
- int ret = 0;
-
- if (!card->dev->dma_mask)
- card->dev->dma_mask = &ep93xx_pcm_dmamask;
- if (!card->dev->coherent_dma_mask)
- card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
-
- if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
- ret = ep93xx_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_PLAYBACK);
- if (ret)
- return ret;
- }
-
- if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
- ret = ep93xx_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_CAPTURE);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static struct snd_soc_platform_driver ep93xx_soc_platform = {
- .ops = &ep93xx_pcm_ops,
- .pcm_new = &ep93xx_pcm_new,
- .pcm_free = &ep93xx_pcm_free_dma_buffers,
-};
-
-static int __devinit ep93xx_soc_platform_probe(struct platform_device *pdev)
-{
- return snd_soc_register_platform(&pdev->dev, &ep93xx_soc_platform);
-}
-
-static int __devexit ep93xx_soc_platform_remove(struct platform_device *pdev)
-{
- snd_soc_unregister_platform(&pdev->dev);
- return 0;
-}
-
-static struct platform_driver ep93xx_pcm_driver = {
- .driver = {
- .name = "ep93xx-pcm-audio",
- .owner = THIS_MODULE,
- },
-
- .probe = ep93xx_soc_platform_probe,
- .remove = __devexit_p(ep93xx_soc_platform_remove),
-};
-
-module_platform_driver(ep93xx_pcm_driver);
-
-MODULE_AUTHOR("Ryan Mallon");
-MODULE_DESCRIPTION("EP93xx ALSA PCM interface");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:ep93xx-pcm-audio");
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-27 12:06:30 +0000