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Diffstat (limited to 'sound/soc/txx9/txx9aclc.c')
-rw-r--r--sound/soc/txx9/txx9aclc.c422
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");