1 files changed, 0 insertions, 422 deletions

diff --git a/sound/soc/txx9/txx9aclc.c b/sound/soc/txx9/txx9aclc.c
deleted file mode 100644
index 1d2d0d9b57b0..000000000000
--- a/sound/soc/txx9/txx9aclc.c
+++ /dev/null
@@ -1,422 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Generic TXx9 ACLC platform driver
- *
- * Copyright (C) 2009 Atsushi Nemoto
- *
- * Based on RBTX49xx patch from CELF patch archive.
- * (C) Copyright TOSHIBA CORPORATION 2004-2006
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/dmaengine.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include "txx9aclc.h"
-
-#define DRV_NAME "txx9aclc"
-
-static struct txx9aclc_soc_device {
-	struct txx9aclc_dmadata dmadata[2];
-} txx9aclc_soc_device;
-
-/* REVISIT: How to find txx9aclc_drvdata from snd_ac97? */
-static struct txx9aclc_plat_drvdata *txx9aclc_drvdata;
-
-static int txx9aclc_dma_init(struct txx9aclc_soc_device *dev,
-			     struct txx9aclc_dmadata *dmadata);
-
-static const struct snd_pcm_hardware txx9aclc_pcm_hardware = {
-	/*
-	 * REVISIT: SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID
-	 * needs more works for noncoherent MIPS.
-	 */
-	.info		  = SNDRV_PCM_INFO_INTERLEAVED |
-			    SNDRV_PCM_INFO_BATCH |
-			    SNDRV_PCM_INFO_PAUSE,
-	.period_bytes_min = 1024,
-	.period_bytes_max = 8 * 1024,
-	.periods_min	  = 2,
-	.periods_max	  = 4096,
-	.buffer_bytes_max = 32 * 1024,
-};
-
-static int txx9aclc_pcm_hw_params(struct snd_soc_component *component,
-				  struct snd_pcm_substream *substream,
-				  struct snd_pcm_hw_params *params)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct txx9aclc_dmadata *dmadata = runtime->private_data;
-
-	dev_dbg(component->dev,
-		"runtime->dma_area = %#lx dma_addr = %#lx dma_bytes = %zd "
-		"runtime->min_align %ld\n",
-		(unsigned long)runtime->dma_area,
-		(unsigned long)runtime->dma_addr, runtime->dma_bytes,
-		runtime->min_align);
-	dev_dbg(component->dev,
-		"periods %d period_bytes %d stream %d\n",
-		params_periods(params), params_period_bytes(params),
-		substream->stream);
-
-	dmadata->substream = substream;
-	dmadata->pos = 0;
-	return 0;
-}
-
-static int txx9aclc_pcm_prepare(struct snd_soc_component *component,
-				struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct txx9aclc_dmadata *dmadata = runtime->private_data;
-
-	dmadata->dma_addr = runtime->dma_addr;
-	dmadata->buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
-	dmadata->period_bytes = snd_pcm_lib_period_bytes(substream);
-
-	if (dmadata->buffer_bytes == dmadata->period_bytes) {
-		dmadata->frag_bytes = dmadata->period_bytes >> 1;
-		dmadata->frags = 2;
-	} else {
-		dmadata->frag_bytes = dmadata->period_bytes;
-		dmadata->frags = dmadata->buffer_bytes / dmadata->period_bytes;
-	}
-	dmadata->frag_count = 0;
-	dmadata->pos = 0;
-	return 0;
-}
-
-static void txx9aclc_dma_complete(void *arg)
-{
-	struct txx9aclc_dmadata *dmadata = arg;
-	unsigned long flags;
-
-	/* dma completion handler cannot submit new operations */
-	spin_lock_irqsave(&dmadata->dma_lock, flags);
-	if (dmadata->frag_count >= 0) {
-		dmadata->dmacount--;
-		if (!WARN_ON(dmadata->dmacount < 0))
-			queue_work(system_highpri_wq, &dmadata->work);
-	}
-	spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-}
-
-static struct dma_async_tx_descriptor *
-txx9aclc_dma_submit(struct txx9aclc_dmadata *dmadata, dma_addr_t buf_dma_addr)
-{
-	struct dma_chan *chan = dmadata->dma_chan;
-	struct dma_async_tx_descriptor *desc;
-	struct scatterlist sg;
-
-	sg_init_table(&sg, 1);
-	sg_set_page(&sg, pfn_to_page(PFN_DOWN(buf_dma_addr)),
-		    dmadata->frag_bytes, buf_dma_addr & (PAGE_SIZE - 1));
-	sg_dma_address(&sg) = buf_dma_addr;
-	desc = dmaengine_prep_slave_sg(chan, &sg, 1,
-		dmadata->substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-		DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
-		DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-	if (!desc) {
-		dev_err(&chan->dev->device, "cannot prepare slave dma\n");
-		return NULL;
-	}
-	desc->callback = txx9aclc_dma_complete;
-	desc->callback_param = dmadata;
-	dmaengine_submit(desc);
-	return desc;
-}
-
-#define NR_DMA_CHAIN		2
-
-static void txx9aclc_dma_work(struct work_struct *work)
-{
-	struct txx9aclc_dmadata *dmadata =
-		container_of(work, struct txx9aclc_dmadata, work);
-	struct dma_chan *chan = dmadata->dma_chan;
-	struct dma_async_tx_descriptor *desc;
-	struct snd_pcm_substream *substream = dmadata->substream;
-	u32 ctlbit = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-		ACCTL_AUDODMA : ACCTL_AUDIDMA;
-	int i;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dmadata->dma_lock, flags);
-	if (dmadata->frag_count < 0) {
-		struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
-		void __iomem *base = drvdata->base;
-
-		spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-		dmaengine_terminate_all(chan);
-		/* first time */
-		for (i = 0; i < NR_DMA_CHAIN; i++) {
-			desc = txx9aclc_dma_submit(dmadata,
-				dmadata->dma_addr + i * dmadata->frag_bytes);
-			if (!desc)
-				return;
-		}
-		dmadata->dmacount = NR_DMA_CHAIN;
-		dma_async_issue_pending(chan);
-		spin_lock_irqsave(&dmadata->dma_lock, flags);
-		__raw_writel(ctlbit, base + ACCTLEN);
-		dmadata->frag_count = NR_DMA_CHAIN % dmadata->frags;
-		spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-		return;
-	}
-	if (WARN_ON(dmadata->dmacount >= NR_DMA_CHAIN)) {
-		spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-		return;
-	}
-	while (dmadata->dmacount < NR_DMA_CHAIN) {
-		dmadata->dmacount++;
-		spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-		desc = txx9aclc_dma_submit(dmadata,
-			dmadata->dma_addr +
-			dmadata->frag_count * dmadata->frag_bytes);
-		if (!desc)
-			return;
-		dma_async_issue_pending(chan);
-
-		spin_lock_irqsave(&dmadata->dma_lock, flags);
-		dmadata->frag_count++;
-		dmadata->frag_count %= dmadata->frags;
-		dmadata->pos += dmadata->frag_bytes;
-		dmadata->pos %= dmadata->buffer_bytes;
-		if ((dmadata->frag_count * dmadata->frag_bytes) %
-		    dmadata->period_bytes == 0)
-			snd_pcm_period_elapsed(substream);
-	}
-	spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-}
-
-static int txx9aclc_pcm_trigger(struct snd_soc_component *component,
-				struct snd_pcm_substream *substream, int cmd)
-{
-	struct txx9aclc_dmadata *dmadata = substream->runtime->private_data;
-	struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
-	void __iomem *base = drvdata->base;
-	unsigned long flags;
-	int ret = 0;
-	u32 ctlbit = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-		ACCTL_AUDODMA : ACCTL_AUDIDMA;
-
-	spin_lock_irqsave(&dmadata->dma_lock, flags);
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		dmadata->frag_count = -1;
-		queue_work(system_highpri_wq, &dmadata->work);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-		__raw_writel(ctlbit, base + ACCTLDIS);
-		break;
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-	case SNDRV_PCM_TRIGGER_RESUME:
-		__raw_writel(ctlbit, base + ACCTLEN);
-		break;
-	default:
-		ret = -EINVAL;
-	}
-	spin_unlock_irqrestore(&dmadata->dma_lock, flags);
-	return ret;
-}
-
-static snd_pcm_uframes_t
-txx9aclc_pcm_pointer(struct snd_soc_component *component,
-		     struct snd_pcm_substream *substream)
-{
-	struct txx9aclc_dmadata *dmadata = substream->runtime->private_data;
-
-	return bytes_to_frames(substream->runtime, dmadata->pos);
-}
-
-static int txx9aclc_pcm_open(struct snd_soc_component *component,
-			     struct snd_pcm_substream *substream)
-{
-	struct txx9aclc_soc_device *dev = &txx9aclc_soc_device;
-	struct txx9aclc_dmadata *dmadata = &dev->dmadata[substream->stream];
-	int ret;
-
-	ret = snd_soc_set_runtime_hwparams(substream, &txx9aclc_pcm_hardware);
-	if (ret)
-		return ret;
-	/* ensure that buffer size is a multiple of period size */
-	ret = snd_pcm_hw_constraint_integer(substream->runtime,
-					    SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
-		return ret;
-	substream->runtime->private_data = dmadata;
-	return 0;
-}
-
-static int txx9aclc_pcm_close(struct snd_soc_component *component,
-			      struct snd_pcm_substream *substream)
-{
-	struct txx9aclc_dmadata *dmadata = substream->runtime->private_data;
-	struct dma_chan *chan = dmadata->dma_chan;
-
-	dmadata->frag_count = -1;
-	dmaengine_terminate_all(chan);
-	return 0;
-}
-
-static int txx9aclc_pcm_new(struct snd_soc_component *component,
-			    struct snd_soc_pcm_runtime *rtd)
-{
-	struct snd_card *card = rtd->card->snd_card;
-	struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
-	struct snd_pcm *pcm = rtd->pcm;
-	struct platform_device *pdev = to_platform_device(component->dev);
-	struct txx9aclc_soc_device *dev;
-	struct resource *r;
-	int i;
-	int ret;
-
-	/* at this point onwards the AC97 component has probed and this will be valid */
-	dev = snd_soc_dai_get_drvdata(dai);
-
-	dev->dmadata[0].stream = SNDRV_PCM_STREAM_PLAYBACK;
-	dev->dmadata[1].stream = SNDRV_PCM_STREAM_CAPTURE;
-	for (i = 0; i < 2; i++) {
-		r = platform_get_resource(pdev, IORESOURCE_DMA, i);
-		if (!r) {
-			ret = -EBUSY;
-			goto exit;
-		}
-		dev->dmadata[i].dma_res = r;
-		ret = txx9aclc_dma_init(dev, &dev->dmadata[i]);
-		if (ret)
-			goto exit;
-	}
-
-	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
-		card->dev, 64 * 1024, 4 * 1024 * 1024);
-	return 0;
-
-exit:
-	for (i = 0; i < 2; i++) {
-		if (dev->dmadata[i].dma_chan)
-			dma_release_channel(dev->dmadata[i].dma_chan);
-		dev->dmadata[i].dma_chan = NULL;
-	}
-	return ret;
-}
-
-static bool filter(struct dma_chan *chan, void *param)
-{
-	struct txx9aclc_dmadata *dmadata = param;
-	char *devname;
-	bool found = false;
-
-	devname = kasprintf(GFP_KERNEL, "%s.%d", dmadata->dma_res->name,
-		(int)dmadata->dma_res->start);
-	if (strcmp(dev_name(chan->device->dev), devname) == 0) {
-		chan->private = &dmadata->dma_slave;
-		found = true;
-	}
-	kfree(devname);
-	return found;
-}
-
-static int txx9aclc_dma_init(struct txx9aclc_soc_device *dev,
-			     struct txx9aclc_dmadata *dmadata)
-{
-	struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
-	struct txx9dmac_slave *ds = &dmadata->dma_slave;
-	dma_cap_mask_t mask;
-
-	spin_lock_init(&dmadata->dma_lock);
-
-	ds->reg_width = sizeof(u32);
-	if (dmadata->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		ds->tx_reg = drvdata->physbase + ACAUDODAT;
-		ds->rx_reg = 0;
-	} else {
-		ds->tx_reg = 0;
-		ds->rx_reg = drvdata->physbase + ACAUDIDAT;
-	}
-
-	/* Try to grab a DMA channel */
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	dmadata->dma_chan = dma_request_channel(mask, filter, dmadata);
-	if (!dmadata->dma_chan) {
-		printk(KERN_ERR
-			"DMA channel for %s is not available\n",
-			dmadata->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-			"playback" : "capture");
-		return -EBUSY;
-	}
-	INIT_WORK(&dmadata->work, txx9aclc_dma_work);
-	return 0;
-}
-
-static int txx9aclc_pcm_probe(struct snd_soc_component *component)
-{
-	snd_soc_component_set_drvdata(component, &txx9aclc_soc_device);
-	return 0;
-}
-
-static void txx9aclc_pcm_remove(struct snd_soc_component *component)
-{
-	struct txx9aclc_soc_device *dev = snd_soc_component_get_drvdata(component);
-	struct txx9aclc_plat_drvdata *drvdata = txx9aclc_drvdata;
-	void __iomem *base = drvdata->base;
-	int i;
-
-	/* disable all FIFO DMAs */
-	__raw_writel(ACCTL_AUDODMA | ACCTL_AUDIDMA, base + ACCTLDIS);
-	/* dummy R/W to clear pending DMAREQ if any */
-	__raw_writel(__raw_readl(base + ACAUDIDAT), base + ACAUDODAT);
-
-	for (i = 0; i < 2; i++) {
-		struct txx9aclc_dmadata *dmadata = &dev->dmadata[i];
-		struct dma_chan *chan = dmadata->dma_chan;
-
-		if (chan) {
-			dmadata->frag_count = -1;
-			dmaengine_terminate_all(chan);
-			dma_release_channel(chan);
-		}
-		dev->dmadata[i].dma_chan = NULL;
-	}
-}
-
-static const struct snd_soc_component_driver txx9aclc_soc_component = {
-	.name		= DRV_NAME,
-	.probe		= txx9aclc_pcm_probe,
-	.remove		= txx9aclc_pcm_remove,
-	.open		= txx9aclc_pcm_open,
-	.close		= txx9aclc_pcm_close,
-	.hw_params	= txx9aclc_pcm_hw_params,
-	.prepare	= txx9aclc_pcm_prepare,
-	.trigger	= txx9aclc_pcm_trigger,
-	.pointer	= txx9aclc_pcm_pointer,
-	.pcm_construct	= txx9aclc_pcm_new,
-};
-
-static int txx9aclc_soc_platform_probe(struct platform_device *pdev)
-{
-	return devm_snd_soc_register_component(&pdev->dev,
-					&txx9aclc_soc_component, NULL, 0);
-}
-
-static struct platform_driver txx9aclc_pcm_driver = {
-	.driver = {
-			.name = "txx9aclc-pcm-audio",
-	},
-
-	.probe = txx9aclc_soc_platform_probe,
-};
-
-module_platform_driver(txx9aclc_pcm_driver);
-
-MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
-MODULE_DESCRIPTION("TXx9 ACLC Audio DMA driver");
-MODULE_LICENSE("GPL");