1 files changed, 0 insertions, 488 deletions

diff --git a/sound/soc/imx/mx1_mx2-pcm.c b/sound/soc/imx/mx1_mx2-pcm.c
deleted file mode 100644
index bffffcd5ff34..000000000000
--- a/sound/soc/imx/mx1_mx2-pcm.c
+++ /dev/null
@@ -1,488 +0,0 @@
-/*
- * mx1_mx2-pcm.c -- ALSA SoC interface for Freescale i.MX1x, i.MX2x CPUs
- *
- * Copyright 2009 Vista Silicon S.L.
- * Author: Javier Martin
- *         javier.martin@vista-silicon.com
- *
- * Based on mxc-pcm.c by Liam Girdwood.
- *
- * 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/platform_device.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <asm/dma.h>
-#include <mach/hardware.h>
-#include <mach/dma-mx1-mx2.h>
-
-#include "mx1_mx2-pcm.h"
-
-
-static const struct snd_pcm_hardware mx1_mx2_pcm_hardware = {
-	.info			= (SNDRV_PCM_INFO_INTERLEAVED |
-				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
-				   SNDRV_PCM_INFO_MMAP |
-				   SNDRV_PCM_INFO_MMAP_VALID),
-	.formats		= SNDRV_PCM_FMTBIT_S16_LE,
-	.buffer_bytes_max	= 32 * 1024,
-	.period_bytes_min	= 64,
-	.period_bytes_max	= 8 * 1024,
-	.periods_min		= 2,
-	.periods_max		= 255,
-	.fifo_size		= 0,
-};
-
-struct mx1_mx2_runtime_data {
-	int dma_ch;
-	int active;
-	unsigned int period;
-	unsigned int periods;
-	int tx_spin;
-	spinlock_t dma_lock;
-	struct mx1_mx2_pcm_dma_params *dma_params;
-};
-
-
-/**
-  * This function stops the current dma transfer for playback
-  * and clears the dma pointers.
-  *
-  * @param	substream	pointer to the structure of the current stream.
-  *
-  */
-static int audio_stop_dma(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-	unsigned long flags;
-
-	spin_lock_irqsave(&prtd->dma_lock, flags);
-
-	pr_debug("%s\n", __func__);
-
-	prtd->active = 0;
-	prtd->period = 0;
-	prtd->periods = 0;
-
-	/* this stops the dma channel and clears the buffer ptrs */
-
-	imx_dma_disable(prtd->dma_ch);
-
-	spin_unlock_irqrestore(&prtd->dma_lock, flags);
-
-	return 0;
-}
-
-/**
-  * This function is called whenever a new audio block needs to be
-  * transferred to the codec. The function receives the address and the size
-  * of the new block and start a new DMA transfer.
-  *
-  * @param	substream	pointer to the structure of the current stream.
-  *
-  */
-static int dma_new_period(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime =  substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-	unsigned int dma_size;
-	unsigned int offset;
-	int ret = 0;
-	dma_addr_t mem_addr;
-	unsigned int dev_addr;
-
-	if (prtd->active) {
-		dma_size = frames_to_bytes(runtime, runtime->period_size);
-		offset = dma_size * prtd->period;
-
-		pr_debug("%s: period (%d) out of (%d)\n", __func__,
-			prtd->period,
-			runtime->periods);
-		pr_debug("period_size %d frames\n offset %d bytes\n",
-			(unsigned int)runtime->period_size,
-			offset);
-		pr_debug("dma_size %d bytes\n", dma_size);
-
-		snd_BUG_ON(dma_size > mx1_mx2_pcm_hardware.period_bytes_max);
-
-		mem_addr = (dma_addr_t)(runtime->dma_addr + offset);
-		dev_addr = prtd->dma_params->per_address;
-		pr_debug("%s: mem_addr is %x\n dev_addr is %x\n",
-				 __func__, mem_addr, dev_addr);
-
-		ret = imx_dma_setup_single(prtd->dma_ch, mem_addr,
-					dma_size, dev_addr,
-					prtd->dma_params->transfer_type);
-		if (ret < 0) {
-			printk(KERN_ERR "Error %d configuring DMA\n", ret);
-			return ret;
-		}
-		imx_dma_enable(prtd->dma_ch);
-
-		pr_debug("%s: transfer enabled\nmem_addr = %x\n",
-			__func__, (unsigned int) mem_addr);
-		pr_debug("dev_addr = %x\ndma_size = %d\n",
-			(unsigned int) dev_addr, dma_size);
-
-		prtd->tx_spin = 1; /* FGA little trick to retrieve DMA pos */
-		prtd->period++;
-		prtd->period %= runtime->periods;
-    }
-	return ret;
-}
-
-
-/**
-  * This is a callback which will be called
-  * when a TX transfer finishes. The call occurs
-  * in interrupt context.
-  *
-  * @param	dat	pointer to the structure of the current stream.
-  *
-  */
-static void audio_dma_irq(int channel, void *data)
-{
-	struct snd_pcm_substream *substream;
-	struct snd_pcm_runtime *runtime;
-	struct mx1_mx2_runtime_data *prtd;
-	unsigned int dma_size;
-	unsigned int previous_period;
-	unsigned int offset;
-
-	substream = data;
-	runtime = substream->runtime;
-	prtd = runtime->private_data;
-	previous_period  = prtd->periods;
-	dma_size = frames_to_bytes(runtime, runtime->period_size);
-	offset = dma_size * previous_period;
-
-	prtd->tx_spin = 0;
-	prtd->periods++;
-	prtd->periods %= runtime->periods;
-
-	pr_debug("%s: irq per %d offset %x\n", __func__, prtd->periods, offset);
-
-	/*
-	  * If we are getting a callback for an active stream then we inform
-	  * the PCM middle layer we've finished a period
-	  */
-	if (prtd->active)
-		snd_pcm_period_elapsed(substream);
-
-	/*
-	  * Trig next DMA transfer
-	  */
-	dma_new_period(substream);
-}
-
-/**
-  * This function configures the hardware to allow audio
-  * playback operations. It is called by ALSA framework.
-  *
-  * @param	substream	pointer to the structure of the current stream.
-  *
-  * @return              0 on success, -1 otherwise.
-  */
-static int
-snd_mx1_mx2_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime =  substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
-	prtd->period = 0;
-	prtd->periods = 0;
-
-	return 0;
-}
-
-static int mx1_mx2_pcm_hw_params(struct snd_pcm_substream *substream,
-	struct snd_pcm_hw_params *hw_params)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int ret;
-
-	ret = snd_pcm_lib_malloc_pages(substream,
-					params_buffer_bytes(hw_params));
-	if (ret < 0) {
-		printk(KERN_ERR "%s: Error %d failed to malloc pcm pages \n",
-		__func__, ret);
-		return ret;
-	}
-
-	pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_addr 0x(%x)\n",
-		__func__, (unsigned int)runtime->dma_addr);
-	pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_area 0x(%x)\n",
-		__func__, (unsigned int)runtime->dma_area);
-	pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_bytes 0x(%x)\n",
-		__func__, (unsigned int)runtime->dma_bytes);
-
-	return ret;
-}
-
-static int mx1_mx2_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
-	imx_dma_free(prtd->dma_ch);
-
-	snd_pcm_lib_free_pages(substream);
-
-	return 0;
-}
-
-static int mx1_mx2_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct mx1_mx2_runtime_data *prtd = substream->runtime->private_data;
-	int ret = 0;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		prtd->tx_spin = 0;
-		/* requested stream startup */
-		prtd->active = 1;
-		pr_debug("%s: starting dma_new_period\n", __func__);
-		ret = dma_new_period(substream);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		/* requested stream shutdown */
-		pr_debug("%s: stopping dma transfer\n", __func__);
-		ret = audio_stop_dma(substream);
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-	return ret;
-}
-
-static snd_pcm_uframes_t
-mx1_mx2_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-	unsigned int offset = 0;
-
-	/* tx_spin value is used here to check if a transfer is active */
-	if (prtd->tx_spin) {
-		offset = (runtime->period_size * (prtd->periods)) +
-						(runtime->period_size >> 1);
-		if (offset >= runtime->buffer_size)
-			offset = runtime->period_size >> 1;
-	} else {
-		offset = (runtime->period_size * (prtd->periods));
-		if (offset >= runtime->buffer_size)
-			offset = 0;
-	}
-	pr_debug("%s: pointer offset %x\n", __func__, offset);
-
-	return offset;
-}
-
-static int mx1_mx2_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct mx1_mx2_runtime_data *prtd;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct mx1_mx2_pcm_dma_params *dma_data = rtd->dai->cpu_dai->dma_data;
-	int ret;
-
-	snd_soc_set_runtime_hwparams(substream, &mx1_mx2_pcm_hardware);
-
-	ret = snd_pcm_hw_constraint_integer(runtime,
-					SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
-		return ret;
-
-	prtd = kzalloc(sizeof(struct mx1_mx2_runtime_data), GFP_KERNEL);
-	if (prtd == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	runtime->private_data = prtd;
-
-	if (!dma_data)
-		return -ENODEV;
-
-	prtd->dma_params = dma_data;
-
-	pr_debug("%s: Requesting dma channel (%s)\n", __func__,
-						prtd->dma_params->name);
-	ret = imx_dma_request_by_prio(prtd->dma_params->name, DMA_PRIO_HIGH);
-	if (ret < 0) {
-		printk(KERN_ERR "Error %d requesting dma channel\n", ret);
-		return ret;
-	}
-	prtd->dma_ch = ret;
-	imx_dma_config_burstlen(prtd->dma_ch,
-				prtd->dma_params->watermark_level);
-
-	ret = imx_dma_config_channel(prtd->dma_ch,
-			prtd->dma_params->per_config,
-			prtd->dma_params->mem_config,
-			prtd->dma_params->event_id, 0);
-
-	if (ret) {
-		pr_debug(KERN_ERR "Error %d configuring dma channel %d\n",
-			ret, prtd->dma_ch);
-		return ret;
-	}
-
-	pr_debug("%s: Setting tx dma callback function\n", __func__);
-	ret = imx_dma_setup_handlers(prtd->dma_ch,
-				audio_dma_irq, NULL,
-				(void *)substream);
-	if (ret < 0) {
-		printk(KERN_ERR "Error %d setting dma callback function\n", ret);
-		return ret;
-	}
-	return 0;
-
- out:
-	return ret;
-}
-
-static int mx1_mx2_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
-	kfree(prtd);
-
-	return 0;
-}
-
-static int mx1_mx2_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 mx1_mx2_pcm_ops = {
-	.open		= mx1_mx2_pcm_open,
-	.close		= mx1_mx2_pcm_close,
-	.ioctl		= snd_pcm_lib_ioctl,
-	.hw_params	= mx1_mx2_pcm_hw_params,
-	.hw_free	= mx1_mx2_pcm_hw_free,
-	.prepare	= snd_mx1_mx2_prepare,
-	.trigger	= mx1_mx2_pcm_trigger,
-	.pointer	= mx1_mx2_pcm_pointer,
-	.mmap		= mx1_mx2_pcm_mmap,
-};
-
-static u64 mx1_mx2_pcm_dmamask = 0xffffffff;
-
-static int mx1_mx2_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 = mx1_mx2_pcm_hardware.buffer_bytes_max;
-	buf->dev.type = SNDRV_DMA_TYPE_DEV;
-	buf->dev.dev = pcm->card->dev;
-	buf->private_data = NULL;
-
-	/* Reserve uncached-buffered memory area for DMA */
-	buf->area = dma_alloc_writecombine(pcm->card->dev, size,
-					   &buf->addr, GFP_KERNEL);
-
-	pr_debug("%s: preallocate_dma_buffer: area=%p, addr=%p, size=%d\n",
-		__func__, (void *) buf->area, (void *) buf->addr, size);
-
-	if (!buf->area)
-		return -ENOMEM;
-
-	buf->bytes = size;
-	return 0;
-}
-
-static void mx1_mx2_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 int mx1_mx2_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
-	struct snd_pcm *pcm)
-{
-	int ret = 0;
-
-	if (!card->dev->dma_mask)
-		card->dev->dma_mask = &mx1_mx2_pcm_dmamask;
-	if (!card->dev->coherent_dma_mask)
-		card->dev->coherent_dma_mask = 0xffffffff;
-
-	if (dai->playback.channels_min) {
-		ret = mx1_mx2_pcm_preallocate_dma_buffer(pcm,
-			SNDRV_PCM_STREAM_PLAYBACK);
-		pr_debug("%s: preallocate playback buffer\n", __func__);
-		if (ret)
-			goto out;
-	}
-
-	if (dai->capture.channels_min) {
-		ret = mx1_mx2_pcm_preallocate_dma_buffer(pcm,
-			SNDRV_PCM_STREAM_CAPTURE);
-		pr_debug("%s: preallocate capture buffer\n", __func__);
-		if (ret)
-			goto out;
-	}
- out:
-	return ret;
-}
-
-struct snd_soc_platform mx1_mx2_soc_platform = {
-	.name		= "mx1_mx2-audio",
-	.pcm_ops 	= &mx1_mx2_pcm_ops,
-	.pcm_new	= mx1_mx2_pcm_new,
-	.pcm_free	= mx1_mx2_pcm_free_dma_buffers,
-};
-EXPORT_SYMBOL_GPL(mx1_mx2_soc_platform);
-
-static int __init mx1_mx2_soc_platform_init(void)
-{
-	return snd_soc_register_platform(&mx1_mx2_soc_platform);
-}
-module_init(mx1_mx2_soc_platform_init);
-
-static void __exit mx1_mx2_soc_platform_exit(void)
-{
-	snd_soc_unregister_platform(&mx1_mx2_soc_platform);
-}
-module_exit(mx1_mx2_soc_platform_exit);
-
-MODULE_AUTHOR("Javier Martin, javier.martin@vista-silicon.com");
-MODULE_DESCRIPTION("Freescale i.MX2x, i.MX1x PCM DMA module");
-MODULE_LICENSE("GPL");