1 files changed, 0 insertions, 534 deletions

diff --git a/ANDROID_3.4.5/sound/soc/fsl/mpc5200_dma.c b/ANDROID_3.4.5/sound/soc/fsl/mpc5200_dma.c
deleted file mode 100644
index 9a3f7c5a..00000000
--- a/ANDROID_3.4.5/sound/soc/fsl/mpc5200_dma.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*
- * Freescale MPC5200 PSC DMA
- * ALSA SoC Platform driver
- *
- * Copyright (C) 2008 Secret Lab Technologies Ltd.
- * Copyright (C) 2009 Jon Smirl, Digispeaker
- */
-
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-#include <linux/of_platform.h>
-
-#include <sound/soc.h>
-
-#include <sysdev/bestcomm/bestcomm.h>
-#include <sysdev/bestcomm/gen_bd.h>
-#include <asm/mpc52xx_psc.h>
-
-#include "mpc5200_dma.h"
-
-/*
- * Interrupt handlers
- */
-static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
-{
-	struct psc_dma *psc_dma = _psc_dma;
-	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
-	u16 isr;
-
-	isr = in_be16(&regs->mpc52xx_psc_isr);
-
-	/* Playback underrun error */
-	if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
-		psc_dma->stats.underrun_count++;
-
-	/* Capture overrun error */
-	if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
-		psc_dma->stats.overrun_count++;
-
-	out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * psc_dma_bcom_enqueue_next_buffer - Enqueue another audio buffer
- * @s: pointer to stream private data structure
- *
- * Enqueues another audio period buffer into the bestcomm queue.
- *
- * Note: The routine must only be called when there is space available in
- * the queue.  Otherwise the enqueue will fail and the audio ring buffer
- * will get out of sync
- */
-static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
-{
-	struct bcom_bd *bd;
-
-	/* Prepare and enqueue the next buffer descriptor */
-	bd = bcom_prepare_next_buffer(s->bcom_task);
-	bd->status = s->period_bytes;
-	bd->data[0] = s->runtime->dma_addr + (s->period_next * s->period_bytes);
-	bcom_submit_next_buffer(s->bcom_task, NULL);
-
-	/* Update for next period */
-	s->period_next = (s->period_next + 1) % s->runtime->periods;
-}
-
-/* Bestcomm DMA irq handler */
-static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
-{
-	struct psc_dma_stream *s = _psc_dma_stream;
-
-	spin_lock(&s->psc_dma->lock);
-	/* For each finished period, dequeue the completed period buffer
-	 * and enqueue a new one in it's place. */
-	while (bcom_buffer_done(s->bcom_task)) {
-		bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
-
-		s->period_current = (s->period_current+1) % s->runtime->periods;
-		s->period_count++;
-
-		psc_dma_bcom_enqueue_next_buffer(s);
-	}
-	spin_unlock(&s->psc_dma->lock);
-
-	/* If the stream is active, then also inform the PCM middle layer
-	 * of the period finished event. */
-	if (s->active)
-		snd_pcm_period_elapsed(s->stream);
-
-	return IRQ_HANDLED;
-}
-
-static int psc_dma_hw_free(struct snd_pcm_substream *substream)
-{
-	snd_pcm_set_runtime_buffer(substream, NULL);
-	return 0;
-}
-
-/**
- * psc_dma_trigger: start and stop the DMA transfer.
- *
- * This function is called by ALSA to start, stop, pause, and resume the DMA
- * transfer of data.
- */
-static int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
-	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
-	u16 imr;
-	unsigned long flags;
-	int i;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		dev_dbg(psc_dma->dev, "START: stream=%i fbits=%u ps=%u #p=%u\n",
-			substream->pstr->stream, runtime->frame_bits,
-			(int)runtime->period_size, runtime->periods);
-		s->period_bytes = frames_to_bytes(runtime,
-						  runtime->period_size);
-		s->period_next = 0;
-		s->period_current = 0;
-		s->active = 1;
-		s->period_count = 0;
-		s->runtime = runtime;
-
-		/* Fill up the bestcomm bd queue and enable DMA.
-		 * This will begin filling the PSC's fifo.
-		 */
-		spin_lock_irqsave(&psc_dma->lock, flags);
-
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-			bcom_gen_bd_rx_reset(s->bcom_task);
-		else
-			bcom_gen_bd_tx_reset(s->bcom_task);
-
-		for (i = 0; i < runtime->periods; i++)
-			if (!bcom_queue_full(s->bcom_task))
-				psc_dma_bcom_enqueue_next_buffer(s);
-
-		bcom_enable(s->bcom_task);
-		spin_unlock_irqrestore(&psc_dma->lock, flags);
-
-		out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
-
-		break;
-
-	case SNDRV_PCM_TRIGGER_STOP:
-		dev_dbg(psc_dma->dev, "STOP: stream=%i periods_count=%i\n",
-			substream->pstr->stream, s->period_count);
-		s->active = 0;
-
-		spin_lock_irqsave(&psc_dma->lock, flags);
-		bcom_disable(s->bcom_task);
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-			bcom_gen_bd_rx_reset(s->bcom_task);
-		else
-			bcom_gen_bd_tx_reset(s->bcom_task);
-		spin_unlock_irqrestore(&psc_dma->lock, flags);
-
-		break;
-
-	default:
-		dev_dbg(psc_dma->dev, "unhandled trigger: stream=%i cmd=%i\n",
-			substream->pstr->stream, cmd);
-		return -EINVAL;
-	}
-
-	/* Update interrupt enable settings */
-	imr = 0;
-	if (psc_dma->playback.active)
-		imr |= MPC52xx_PSC_IMR_TXEMP;
-	if (psc_dma->capture.active)
-		imr |= MPC52xx_PSC_IMR_ORERR;
-	out_be16(&regs->isr_imr.imr, psc_dma->imr | imr);
-
-	return 0;
-}
-
-
-/* ---------------------------------------------------------------------
- * The PSC DMA 'ASoC platform' driver
- *
- * Can be referenced by an 'ASoC machine' driver
- * This driver only deals with the audio bus; it doesn't have any
- * interaction with the attached codec
- */
-
-static const struct snd_pcm_hardware psc_dma_hardware = {
-	.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
-		SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
-		SNDRV_PCM_INFO_BATCH,
-	.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
-		SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE,
-	.rate_min = 8000,
-	.rate_max = 48000,
-	.channels_min = 1,
-	.channels_max = 2,
-	.period_bytes_max	= 1024 * 1024,
-	.period_bytes_min	= 32,
-	.periods_min		= 2,
-	.periods_max		= 256,
-	.buffer_bytes_max	= 2 * 1024 * 1024,
-	.fifo_size		= 512,
-};
-
-static int psc_dma_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	struct psc_dma_stream *s;
-	int rc;
-
-	dev_dbg(psc_dma->dev, "psc_dma_open(substream=%p)\n", substream);
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_dma->capture;
-	else
-		s = &psc_dma->playback;
-
-	snd_soc_set_runtime_hwparams(substream, &psc_dma_hardware);
-
-	rc = snd_pcm_hw_constraint_integer(runtime,
-		SNDRV_PCM_HW_PARAM_PERIODS);
-	if (rc < 0) {
-		dev_err(substream->pcm->card->dev, "invalid buffer size\n");
-		return rc;
-	}
-
-	s->stream = substream;
-	return 0;
-}
-
-static int psc_dma_close(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	struct psc_dma_stream *s;
-
-	dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream);
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_dma->capture;
-	else
-		s = &psc_dma->playback;
-
-	if (!psc_dma->playback.active &&
-	    !psc_dma->capture.active) {
-
-		/* Disable all interrupts and reset the PSC */
-		out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr);
-		out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
-	}
-	s->stream = NULL;
-	return 0;
-}
-
-static snd_pcm_uframes_t
-psc_dma_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	struct psc_dma_stream *s;
-	dma_addr_t count;
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_dma->capture;
-	else
-		s = &psc_dma->playback;
-
-	count = s->period_current * s->period_bytes;
-
-	return bytes_to_frames(substream->runtime, count);
-}
-
-static int
-psc_dma_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 struct snd_pcm_ops psc_dma_ops = {
-	.open		= psc_dma_open,
-	.close		= psc_dma_close,
-	.hw_free	= psc_dma_hw_free,
-	.ioctl		= snd_pcm_lib_ioctl,
-	.pointer	= psc_dma_pointer,
-	.trigger	= psc_dma_trigger,
-	.hw_params	= psc_dma_hw_params,
-};
-
-static u64 psc_dma_dmamask = DMA_BIT_MASK(32);
-static int psc_dma_new(struct snd_soc_pcm_runtime *rtd)
-{
-	struct snd_card *card = rtd->card->snd_card;
-	struct snd_soc_dai *dai = rtd->cpu_dai;
-	struct snd_pcm *pcm = rtd->pcm;
-	struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	size_t size = psc_dma_hardware.buffer_bytes_max;
-	int rc = 0;
-
-	dev_dbg(rtd->platform->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
-		card, dai, pcm);
-
-	if (!card->dev->dma_mask)
-		card->dev->dma_mask = &psc_dma_dmamask;
-	if (!card->dev->coherent_dma_mask)
-		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
-
-	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
-		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->card->dev,
-				size, &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer);
-		if (rc)
-			goto playback_alloc_err;
-	}
-
-	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
-		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->card->dev,
-				size, &pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->dma_buffer);
-		if (rc)
-			goto capture_alloc_err;
-	}
-
-	if (rtd->codec->ac97)
-		rtd->codec->ac97->private_data = psc_dma;
-
-	return 0;
-
- capture_alloc_err:
-	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream)
-		snd_dma_free_pages(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer);
-
- playback_alloc_err:
-	dev_err(card->dev, "Cannot allocate buffer(s)\n");
-
-	return -ENOMEM;
-}
-
-static void psc_dma_free(struct snd_pcm *pcm)
-{
-	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
-	struct snd_pcm_substream *substream;
-	int stream;
-
-	dev_dbg(rtd->platform->dev, "psc_dma_free(pcm=%p)\n", pcm);
-
-	for (stream = 0; stream < 2; stream++) {
-		substream = pcm->streams[stream].substream;
-		if (substream) {
-			snd_dma_free_pages(&substream->dma_buffer);
-			substream->dma_buffer.area = NULL;
-			substream->dma_buffer.addr = 0;
-		}
-	}
-}
-
-static struct snd_soc_platform_driver mpc5200_audio_dma_platform = {
-	.ops		= &psc_dma_ops,
-	.pcm_new	= &psc_dma_new,
-	.pcm_free	= &psc_dma_free,
-};
-
-static int mpc5200_hpcd_probe(struct platform_device *op)
-{
-	phys_addr_t fifo;
-	struct psc_dma *psc_dma;
-	struct resource res;
-	int size, irq, rc;
-	const __be32 *prop;
-	void __iomem *regs;
-	int ret;
-
-	/* Fetch the registers and IRQ of the PSC */
-	irq = irq_of_parse_and_map(op->dev.of_node, 0);
-	if (of_address_to_resource(op->dev.of_node, 0, &res)) {
-		dev_err(&op->dev, "Missing reg property\n");
-		return -ENODEV;
-	}
-	regs = ioremap(res.start, resource_size(&res));
-	if (!regs) {
-		dev_err(&op->dev, "Could not map registers\n");
-		return -ENODEV;
-	}
-
-	/* Allocate and initialize the driver private data */
-	psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL);
-	if (!psc_dma) {
-		ret = -ENOMEM;
-		goto out_unmap;
-	}
-
-	/* Get the PSC ID */
-	prop = of_get_property(op->dev.of_node, "cell-index", &size);
-	if (!prop || size < sizeof *prop) {
-		ret = -ENODEV;
-		goto out_free;
-	}
-
-	spin_lock_init(&psc_dma->lock);
-	mutex_init(&psc_dma->mutex);
-	psc_dma->id = be32_to_cpu(*prop);
-	psc_dma->irq = irq;
-	psc_dma->psc_regs = regs;
-	psc_dma->fifo_regs = regs + sizeof *psc_dma->psc_regs;
-	psc_dma->dev = &op->dev;
-	psc_dma->playback.psc_dma = psc_dma;
-	psc_dma->capture.psc_dma = psc_dma;
-	snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_dma->id);
-
-	/* Find the address of the fifo data registers and setup the
-	 * DMA tasks */
-	fifo = res.start + offsetof(struct mpc52xx_psc, buffer.buffer_32);
-	psc_dma->capture.bcom_task =
-		bcom_psc_gen_bd_rx_init(psc_dma->id, 10, fifo, 512);
-	psc_dma->playback.bcom_task =
-		bcom_psc_gen_bd_tx_init(psc_dma->id, 10, fifo);
-	if (!psc_dma->capture.bcom_task ||
-	    !psc_dma->playback.bcom_task) {
-		dev_err(&op->dev, "Could not allocate bestcomm tasks\n");
-		ret = -ENODEV;
-		goto out_free;
-	}
-
-	/* Disable all interrupts and reset the PSC */
-	out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr);
-	 /* reset receiver */
-	out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_RX);
-	 /* reset transmitter */
-	out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_TX);
-	 /* reset error */
-	out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_ERR_STAT);
-	 /* reset mode */
-	out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_SEL_MODE_REG_1);
-
-	/* Set up mode register;
-	 * First write: RxRdy (FIFO Alarm) generates rx FIFO irq
-	 * Second write: register Normal mode for non loopback
-	 */
-	out_8(&psc_dma->psc_regs->mode, 0);
-	out_8(&psc_dma->psc_regs->mode, 0);
-
-	/* Set the TX and RX fifo alarm thresholds */
-	out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
-	out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
-	out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
-	out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
-
-	/* Lookup the IRQ numbers */
-	psc_dma->playback.irq =
-		bcom_get_task_irq(psc_dma->playback.bcom_task);
-	psc_dma->capture.irq =
-		bcom_get_task_irq(psc_dma->capture.bcom_task);
-
-	rc = request_irq(psc_dma->irq, &psc_dma_status_irq, IRQF_SHARED,
-			 "psc-dma-status", psc_dma);
-	rc |= request_irq(psc_dma->capture.irq, &psc_dma_bcom_irq, IRQF_SHARED,
-			  "psc-dma-capture", &psc_dma->capture);
-	rc |= request_irq(psc_dma->playback.irq, &psc_dma_bcom_irq, IRQF_SHARED,
-			  "psc-dma-playback", &psc_dma->playback);
-	if (rc) {
-		ret = -ENODEV;
-		goto out_irq;
-	}
-
-	/* Save what we've done so it can be found again later */
-	dev_set_drvdata(&op->dev, psc_dma);
-
-	/* Tell the ASoC OF helpers about it */
-	return snd_soc_register_platform(&op->dev, &mpc5200_audio_dma_platform);
-out_irq:
-	free_irq(psc_dma->irq, psc_dma);
-	free_irq(psc_dma->capture.irq, &psc_dma->capture);
-	free_irq(psc_dma->playback.irq, &psc_dma->playback);
-out_free:
-	kfree(psc_dma);
-out_unmap:
-	iounmap(regs);
-	return ret;
-}
-
-static int mpc5200_hpcd_remove(struct platform_device *op)
-{
-	struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
-
-	dev_dbg(&op->dev, "mpc5200_audio_dma_destroy()\n");
-
-	snd_soc_unregister_platform(&op->dev);
-
-	bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
-	bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
-
-	/* Release irqs */
-	free_irq(psc_dma->irq, psc_dma);
-	free_irq(psc_dma->capture.irq, &psc_dma->capture);
-	free_irq(psc_dma->playback.irq, &psc_dma->playback);
-
-	iounmap(psc_dma->psc_regs);
-	kfree(psc_dma);
-	dev_set_drvdata(&op->dev, NULL);
-
-	return 0;
-}
-
-static struct of_device_id mpc5200_hpcd_match[] = {
-	{ .compatible = "fsl,mpc5200-pcm", },
-	{}
-};
-MODULE_DEVICE_TABLE(of, mpc5200_hpcd_match);
-
-static struct platform_driver mpc5200_hpcd_of_driver = {
-	.probe		= mpc5200_hpcd_probe,
-	.remove		= mpc5200_hpcd_remove,
-	.driver = {
-		.owner		= THIS_MODULE,
-		.name		= "mpc5200-pcm-audio",
-		.of_match_table    = mpc5200_hpcd_match,
-	}
-};
-
-module_platform_driver(mpc5200_hpcd_of_driver);
-
-MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
-MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
-MODULE_LICENSE("GPL");