ASoC: Intel: Remove baytrail solution

sound/soc/intel/baytrail is a niche solution which supports limited
number of BYT products - as described by
snd_soc_acpi_intel_baytrail_legacy_machines table. For a long time it's
deprecated in favor of sound/soc/intel/atom solution with SOF providing
support for some products too effectively rendering /baytrail/ redundant.
Remove deprecated code from ASoC tree.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Liam Girdwood <liam.r.girdwood@intel.com>
Link: https://lore.kernel.org/r/20201006064907.16277-5-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 0 insertions, 459 deletions

diff --git a/sound/soc/intel/baytrail/sst-baytrail-pcm.c b/sound/soc/intel/baytrail/sst-baytrail-pcm.c
deleted file mode 100644
index 54a66cc6db89..000000000000
--- a/sound/soc/intel/baytrail/sst-baytrail-pcm.c
+++ /dev/null
@@ -1,459 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel Baytrail SST PCM Support
- * Copyright (c) 2014, Intel Corporation.
- */
-
-#include <linux/module.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include "sst-baytrail-ipc.h"
-#include "../common/sst-dsp-priv.h"
-#include "../common/sst-dsp.h"
-
-#define DRV_NAME "byt-dai"
-#define BYT_PCM_COUNT		2
-
-static const struct snd_pcm_hardware sst_byt_pcm_hardware = {
-	.info			= SNDRV_PCM_INFO_MMAP |
-				  SNDRV_PCM_INFO_MMAP_VALID |
-				  SNDRV_PCM_INFO_INTERLEAVED |
-				  SNDRV_PCM_INFO_PAUSE |
-				  SNDRV_PCM_INFO_RESUME,
-	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S24_LE,
-	.period_bytes_min	= 384,
-	.period_bytes_max	= 48000,
-	.periods_min		= 2,
-	.periods_max		= 250,
-	.buffer_bytes_max	= 96000,
-};
-
-/* private data for each PCM DSP stream */
-struct sst_byt_pcm_data {
-	struct sst_byt_stream *stream;
-	struct snd_pcm_substream *substream;
-	struct mutex mutex;
-
-	/* latest DSP DMA hw pointer */
-	u32 hw_ptr;
-
-	struct work_struct work;
-};
-
-/* private data for the driver */
-struct sst_byt_priv_data {
-	/* runtime DSP */
-	struct sst_byt *byt;
-
-	/* DAI data */
-	struct sst_byt_pcm_data pcm[BYT_PCM_COUNT];
-
-	/* flag indicating is stream context restore needed after suspend */
-	bool restore_stream;
-};
-
-/* this may get called several times by oss emulation */
-static int sst_byt_pcm_hw_params(struct snd_soc_component *component,
-				 struct snd_pcm_substream *substream,
-				 struct snd_pcm_hw_params *params)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-	struct sst_byt *byt = pdata->byt;
-	u32 rate, bits;
-	u8 channels;
-	int ret, playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
-
-	dev_dbg(rtd->dev, "PCM: hw_params, pcm_data %p\n", pcm_data);
-
-	ret = sst_byt_stream_type(byt, pcm_data->stream,
-				  1, 1, !playback);
-	if (ret < 0) {
-		dev_err(rtd->dev, "failed to set stream format %d\n", ret);
-		return ret;
-	}
-
-	rate = params_rate(params);
-	ret = sst_byt_stream_set_rate(byt, pcm_data->stream, rate);
-	if (ret < 0) {
-		dev_err(rtd->dev, "could not set rate %d\n", rate);
-		return ret;
-	}
-
-	bits = snd_pcm_format_width(params_format(params));
-	ret = sst_byt_stream_set_bits(byt, pcm_data->stream, bits);
-	if (ret < 0) {
-		dev_err(rtd->dev, "could not set formats %d\n",
-			params_rate(params));
-		return ret;
-	}
-
-	channels = (u8)(params_channels(params) & 0xF);
-	ret = sst_byt_stream_set_channels(byt, pcm_data->stream, channels);
-	if (ret < 0) {
-		dev_err(rtd->dev, "could not set channels %d\n",
-			params_rate(params));
-		return ret;
-	}
-
-	ret = sst_byt_stream_buffer(byt, pcm_data->stream,
-				    substream->dma_buffer.addr,
-				    params_buffer_bytes(params));
-	if (ret < 0) {
-		dev_err(rtd->dev, "PCM: failed to set DMA buffer %d\n", ret);
-		return ret;
-	}
-
-	ret = sst_byt_stream_commit(byt, pcm_data->stream);
-	if (ret < 0) {
-		dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-	struct sst_byt *byt = pdata->byt;
-	int ret;
-
-	/* commit stream using existing stream params */
-	ret = sst_byt_stream_commit(byt, pcm_data->stream);
-	if (ret < 0) {
-		dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret);
-		return ret;
-	}
-
-	sst_byt_stream_start(byt, pcm_data->stream, pcm_data->hw_ptr);
-
-	dev_dbg(rtd->dev, "stream context restored at offset %d\n",
-		pcm_data->hw_ptr);
-
-	return 0;
-}
-
-static void sst_byt_pcm_work(struct work_struct *work)
-{
-	struct sst_byt_pcm_data *pcm_data =
-		container_of(work, struct sst_byt_pcm_data, work);
-
-	if (snd_pcm_running(pcm_data->substream))
-		sst_byt_pcm_restore_stream_context(pcm_data->substream);
-}
-
-static int sst_byt_pcm_trigger(struct snd_soc_component *component,
-			       struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-	struct sst_byt *byt = pdata->byt;
-
-	dev_dbg(rtd->dev, "PCM: trigger %d\n", cmd);
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		pcm_data->hw_ptr = 0;
-		sst_byt_stream_start(byt, pcm_data->stream, 0);
-		break;
-	case SNDRV_PCM_TRIGGER_RESUME:
-		if (pdata->restore_stream)
-			schedule_work(&pcm_data->work);
-		else
-			sst_byt_stream_resume(byt, pcm_data->stream);
-		break;
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		sst_byt_stream_resume(byt, pcm_data->stream);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		sst_byt_stream_stop(byt, pcm_data->stream);
-		break;
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-		pdata->restore_stream = false;
-		/* fallthrough */
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		sst_byt_stream_pause(byt, pcm_data->stream);
-		break;
-	default:
-		break;
-	}
-
-	return 0;
-}
-
-static u32 byt_notify_pointer(struct sst_byt_stream *stream, void *data)
-{
-	struct sst_byt_pcm_data *pcm_data = data;
-	struct snd_pcm_substream *substream = pcm_data->substream;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt *byt = pdata->byt;
-	u32 pos, hw_pos;
-
-	hw_pos = sst_byt_get_dsp_position(byt, pcm_data->stream,
-					  snd_pcm_lib_buffer_bytes(substream));
-	pcm_data->hw_ptr = hw_pos;
-	pos = frames_to_bytes(runtime,
-			      (runtime->control->appl_ptr %
-			       runtime->buffer_size));
-
-	dev_dbg(rtd->dev, "PCM: App/DMA pointer %u/%u bytes\n", pos, hw_pos);
-
-	snd_pcm_period_elapsed(substream);
-	return pos;
-}
-
-static snd_pcm_uframes_t sst_byt_pcm_pointer(struct snd_soc_component *component,
-					     struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-
-	dev_dbg(rtd->dev, "PCM: DMA pointer %u bytes\n", pcm_data->hw_ptr);
-
-	return bytes_to_frames(runtime, pcm_data->hw_ptr);
-}
-
-static int sst_byt_pcm_open(struct snd_soc_component *component,
-			    struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-	struct sst_byt *byt = pdata->byt;
-
-	dev_dbg(rtd->dev, "PCM: open\n");
-
-	mutex_lock(&pcm_data->mutex);
-
-	pcm_data->substream = substream;
-
-	snd_soc_set_runtime_hwparams(substream, &sst_byt_pcm_hardware);
-
-	pcm_data->stream = sst_byt_stream_new(byt, substream->stream + 1,
-					      byt_notify_pointer, pcm_data);
-	if (pcm_data->stream == NULL) {
-		dev_err(rtd->dev, "failed to create stream\n");
-		mutex_unlock(&pcm_data->mutex);
-		return -EINVAL;
-	}
-
-	mutex_unlock(&pcm_data->mutex);
-	return 0;
-}
-
-static int sst_byt_pcm_close(struct snd_soc_component *component,
-			     struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-	struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
-	struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
-	struct sst_byt *byt = pdata->byt;
-	int ret;
-
-	dev_dbg(rtd->dev, "PCM: close\n");
-
-	cancel_work_sync(&pcm_data->work);
-	mutex_lock(&pcm_data->mutex);
-	ret = sst_byt_stream_free(byt, pcm_data->stream);
-	if (ret < 0) {
-		dev_dbg(rtd->dev, "Free stream fail\n");
-		goto out;
-	}
-	pcm_data->stream = NULL;
-
-out:
-	mutex_unlock(&pcm_data->mutex);
-	return ret;
-}
-
-static int sst_byt_pcm_mmap(struct snd_soc_component *component,
-			    struct snd_pcm_substream *substream,
-			    struct vm_area_struct *vma)
-{
-	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
-
-	dev_dbg(rtd->dev, "PCM: mmap\n");
-	return snd_pcm_lib_default_mmap(substream, vma);
-}
-
-static int sst_byt_pcm_new(struct snd_soc_component *component,
-			   struct snd_soc_pcm_runtime *rtd)
-{
-	struct snd_pcm *pcm = rtd->pcm;
-	size_t size;
-	struct sst_pdata *pdata = dev_get_platdata(component->dev);
-
-	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
-	    pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
-		size = sst_byt_pcm_hardware.buffer_bytes_max;
-		snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
-					       pdata->dma_dev, size, size);
-	}
-
-	return 0;
-}
-
-static struct snd_soc_dai_driver byt_dais[] = {
-	{
-		.name  = "Baytrail PCM",
-		.playback = {
-			.stream_name = "System Playback",
-			.channels_min = 2,
-			.channels_max = 2,
-			.rates = SNDRV_PCM_RATE_48000,
-			.formats = SNDRV_PCM_FMTBIT_S24_3LE |
-				   SNDRV_PCM_FMTBIT_S16_LE,
-		},
-		.capture = {
-			.stream_name = "Analog Capture",
-			.channels_min = 2,
-			.channels_max = 2,
-			.rates = SNDRV_PCM_RATE_48000,
-			.formats = SNDRV_PCM_FMTBIT_S16_LE,
-		},
-	},
-};
-
-static int sst_byt_pcm_probe(struct snd_soc_component *component)
-{
-	struct sst_pdata *plat_data = dev_get_platdata(component->dev);
-	struct sst_byt_priv_data *priv_data;
-	int i;
-
-	if (!plat_data)
-		return -ENODEV;
-
-	priv_data = devm_kzalloc(component->dev, sizeof(*priv_data),
-				 GFP_KERNEL);
-	if (!priv_data)
-		return -ENOMEM;
-	priv_data->byt = plat_data->dsp;
-	snd_soc_component_set_drvdata(component, priv_data);
-
-	for (i = 0; i < BYT_PCM_COUNT; i++) {
-		mutex_init(&priv_data->pcm[i].mutex);
-		INIT_WORK(&priv_data->pcm[i].work, sst_byt_pcm_work);
-	}
-
-	return 0;
-}
-
-static const struct snd_soc_component_driver byt_dai_component = {
-	.name		= DRV_NAME,
-	.probe		= sst_byt_pcm_probe,
-	.open		= sst_byt_pcm_open,
-	.close		= sst_byt_pcm_close,
-	.hw_params	= sst_byt_pcm_hw_params,
-	.trigger	= sst_byt_pcm_trigger,
-	.pointer	= sst_byt_pcm_pointer,
-	.mmap		= sst_byt_pcm_mmap,
-	.pcm_construct	= sst_byt_pcm_new,
-};
-
-#ifdef CONFIG_PM
-static int sst_byt_pcm_dev_suspend_late(struct device *dev)
-{
-	struct sst_pdata *sst_pdata = dev_get_platdata(dev);
-	struct sst_byt_priv_data *priv_data = dev_get_drvdata(dev);
-	int ret;
-
-	dev_dbg(dev, "suspending late\n");
-
-	ret = sst_byt_dsp_suspend_late(dev, sst_pdata);
-	if (ret < 0) {
-		dev_err(dev, "failed to suspend %d\n", ret);
-		return ret;
-	}
-
-	priv_data->restore_stream = true;
-
-	return ret;
-}
-
-static int sst_byt_pcm_dev_resume_early(struct device *dev)
-{
-	struct sst_pdata *sst_pdata = dev_get_platdata(dev);
-	int ret;
-
-	dev_dbg(dev, "resume early\n");
-
-	/* load fw and boot DSP */
-	ret = sst_byt_dsp_boot(dev, sst_pdata);
-	if (ret)
-		return ret;
-
-	/* wait for FW to finish booting */
-	return sst_byt_dsp_wait_for_ready(dev, sst_pdata);
-}
-
-static const struct dev_pm_ops sst_byt_pm_ops = {
-	.suspend_late = sst_byt_pcm_dev_suspend_late,
-	.resume_early = sst_byt_pcm_dev_resume_early,
-};
-
-#define SST_BYT_PM_OPS	(&sst_byt_pm_ops)
-#else
-#define SST_BYT_PM_OPS	NULL
-#endif
-
-static int sst_byt_pcm_dev_probe(struct platform_device *pdev)
-{
-	struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
-	int ret;
-
-	ret = sst_byt_dsp_init(&pdev->dev, sst_pdata);
-	if (ret < 0)
-		return -ENODEV;
-
-	ret = devm_snd_soc_register_component(&pdev->dev, &byt_dai_component,
-					 byt_dais, ARRAY_SIZE(byt_dais));
-	if (ret < 0)
-		goto err_plat;
-
-	return 0;
-
-err_plat:
-	sst_byt_dsp_free(&pdev->dev, sst_pdata);
-	return ret;
-}
-
-static int sst_byt_pcm_dev_remove(struct platform_device *pdev)
-{
-	struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
-
-	sst_byt_dsp_free(&pdev->dev, sst_pdata);
-
-	return 0;
-}
-
-static struct platform_driver sst_byt_pcm_driver = {
-	.driver = {
-		.name = "baytrail-pcm-audio",
-		.pm = SST_BYT_PM_OPS,
-	},
-
-	.probe = sst_byt_pcm_dev_probe,
-	.remove = sst_byt_pcm_dev_remove,
-};
-module_platform_driver(sst_byt_pcm_driver);
-
-MODULE_AUTHOR("Jarkko Nikula");
-MODULE_DESCRIPTION("Baytrail PCM");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:baytrail-pcm-audio");