import whole driver package

4 files changed, 0 insertions, 1306 deletions

diff --git a/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h b/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h
deleted file mode 100755
index 2df54cf..0000000
--- a/snd-alpx/core/RedHat/4.18/dmaengine_pcm.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+
- *
- *  Copyright (C) 2012, Analog Devices Inc.
- *	Author: Lars-Peter Clausen <lars@metafoo.de>
- */
-
-#ifndef __SOUND_DMAENGINE_PCM_H__
-#define __SOUND_DMAENGINE_PCM_H__
-
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <linux/dmaengine.h>
-
-/**
- * snd_pcm_substream_to_dma_direction - Get dma_transfer_direction for a PCM
- *   substream
- * @substream: PCM substream
- *
- * Return: DMA transfer direction
- */
-static inline enum dma_transfer_direction
-snd_pcm_substream_to_dma_direction(const struct snd_pcm_substream *substream)
-{
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		return DMA_MEM_TO_DEV;
-	else
-		return DMA_DEV_TO_MEM;
-}
-
-int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
-	const struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config);
-int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
-	struct dma_chan *chan);
-int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
-	dma_filter_fn filter_fn, void *filter_data);
-int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream);
-
-struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
-	void *filter_data);
-struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream);
-
-/*
- * The DAI supports packed transfers, eg 2 16-bit samples in a 32-bit word.
- * If this flag is set the dmaengine driver won't put any restriction on
- * the supported sample formats and set the DMA transfer size to undefined.
- * The DAI driver is responsible to disable any unsupported formats in it's
- * configuration and catch corner cases that are not already handled in
- * the ALSA core.
- */
-#define SND_DMAENGINE_PCM_DAI_FLAG_PACK BIT(0)
-
-/**
- * struct snd_dmaengine_dai_dma_data - DAI DMA configuration data
- * @addr: Address of the DAI data source or destination register.
- * @addr_width: Width of the DAI data source or destination register.
- * @maxburst: Maximum number of words(note: words, as in units of the
- * src_addr_width member, not bytes) that can be send to or received from the
- * DAI in one burst.
- * @filter_data: Custom DMA channel filter data, this will usually be used when
- * requesting the DMA channel.
- * @chan_name: Custom channel name to use when requesting DMA channel.
- * @fifo_size: FIFO size of the DAI controller in bytes
- * @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
- * @peripheral_config: peripheral configuration for programming peripheral
- * for dmaengine transfer
- * @peripheral_size: peripheral configuration buffer size
- */
-struct snd_dmaengine_dai_dma_data {
-	dma_addr_t addr;
-	enum dma_slave_buswidth addr_width;
-	u32 maxburst;
-	void *filter_data;
-	const char *chan_name;
-	unsigned int fifo_size;
-	unsigned int flags;
-	void *peripheral_config;
-	size_t peripheral_size;
-};
-
-void snd_dmaengine_pcm_set_config_from_dai_data(
-	const struct snd_pcm_substream *substream,
-	const struct snd_dmaengine_dai_dma_data *dma_data,
-	struct dma_slave_config *config);
-
-int snd_dmaengine_pcm_refine_runtime_hwparams(
-	struct snd_pcm_substream *substream,
-	struct snd_dmaengine_dai_dma_data *dma_data,
-	struct snd_pcm_hardware *hw,
-	struct dma_chan *chan);
-
-/*
- * Try to request the DMA channel using compat_request_channel or
- * compat_filter_fn if it couldn't be requested through devicetree.
- */
-#define SND_DMAENGINE_PCM_FLAG_COMPAT BIT(0)
-/*
- * Don't try to request the DMA channels through devicetree. This flag only
- * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well.
- */
-#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
-/*
- * The PCM is half duplex and the DMA channel is shared between capture and
- * playback.
- */
-#define SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX BIT(3)
-
-/**
- * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM
- * @prepare_slave_config: Callback used to fill in the DMA slave_config for a
- *   PCM substream. Will be called from the PCM drivers hwparams callback.
- * @compat_request_channel: Callback to request a DMA channel for platforms
- *   which do not use devicetree.
- * @process: Callback used to apply processing on samples transferred from/to
- *   user space.
- * @compat_filter_fn: Will be used as the filter function when requesting a
- *  channel for platforms which do not use devicetree. The filter parameter
- *  will be the DAI's DMA data.
- * @dma_dev: If set, request DMA channel on this device rather than the DAI
- *  device.
- * @chan_names: If set, these custom DMA channel names will be requested at
- *  registration time.
- * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM.
- * @prealloc_buffer_size: Size of the preallocated audio buffer.
- *
- * Note: If both compat_request_channel and compat_filter_fn are set
- * compat_request_channel will be used to request the channel and
- * compat_filter_fn will be ignored. Otherwise the channel will be requested
- * using dma_request_channel with compat_filter_fn as the filter function.
- */
-struct snd_dmaengine_pcm_config {
-	int (*prepare_slave_config)(struct snd_pcm_substream *substream,
-			struct snd_pcm_hw_params *params,
-			struct dma_slave_config *slave_config);
-	struct dma_chan *(*compat_request_channel)(
-			struct snd_soc_pcm_runtime *rtd,
-			struct snd_pcm_substream *substream);
-	int (*process)(struct snd_pcm_substream *substream,
-		       int channel, unsigned long hwoff,
-		       void *buf, unsigned long bytes);
-	dma_filter_fn compat_filter_fn;
-	struct device *dma_dev;
-	const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];
-
-	const struct snd_pcm_hardware *pcm_hardware;
-	unsigned int prealloc_buffer_size;
-};
-
-int snd_dmaengine_pcm_register(struct device *dev,
-	const struct snd_dmaengine_pcm_config *config,
-	unsigned int flags);
-void snd_dmaengine_pcm_unregister(struct device *dev);
-
-int devm_snd_dmaengine_pcm_register(struct device *dev,
-	const struct snd_dmaengine_pcm_config *config,
-	unsigned int flags);
-
-int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
-	struct snd_pcm_hw_params *params,
-	struct dma_slave_config *slave_config);
-
-#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm"
-
-struct dmaengine_pcm {
-	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
-	const struct snd_dmaengine_pcm_config *config;
-	struct snd_soc_component component;
-	unsigned int flags;
-};
-
-static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)
-{
-	return container_of(p, struct dmaengine_pcm, component);
-}
-#endif
diff --git a/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c b/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c
deleted file mode 100755
index 494ec0c..0000000
--- a/snd-alpx/core/RedHat/4.18/pcm_dmaengine.c
+++ /dev/null
@@ -1,473 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2012, Analog Devices Inc.
- *	Author: Lars-Peter Clausen <lars@metafoo.de>
- *
- *  Based on:
- *	imx-pcm-dma-mx2.c, Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
- *	mxs-pcm.c, Copyright (C) 2011 Freescale Semiconductor, Inc.
- *	ep93xx-pcm.c, Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *		      Copyright (C) 2006 Applied Data Systems
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/dmaengine.h>
-#include <linux/slab.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <sound/dmaengine_pcm.h>
-
-struct dmaengine_pcm_runtime_data {
-	struct dma_chan *dma_chan;
-	dma_cookie_t cookie;
-
-	unsigned int pos;
-};
-
-static inline struct dmaengine_pcm_runtime_data *substream_to_prtd(
-	const struct snd_pcm_substream *substream)
-{
-	return substream->runtime->private_data;
-}
-
-struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	return prtd->dma_chan;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_chan);
-
-/**
- * snd_hwparams_to_dma_slave_config - Convert hw_params to dma_slave_config
- * @substream: PCM substream
- * @params: hw_params
- * @slave_config: DMA slave config
- *
- * This function can be used to initialize a dma_slave_config from a substream
- * and hw_params in a dmaengine based PCM driver implementation.
- *
- * Return: zero if successful, or a negative error code
- */
-int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
-	const struct snd_pcm_hw_params *params,
-	struct dma_slave_config *slave_config)
-{
-	enum dma_slave_buswidth buswidth;
-	int bits;
-
-	bits = params_physical_width(params);
-	if (bits < 8 || bits > 64)
-		return -EINVAL;
-	else if (bits == 8)
-		buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
-	else if (bits == 16)
-		buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
-	else if (bits == 24)
-		buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES;
-	else if (bits <= 32)
-		buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	else
-		buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES;
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config->direction = DMA_MEM_TO_DEV;
-		slave_config->dst_addr_width = buswidth;
-	} else {
-		slave_config->direction = DMA_DEV_TO_MEM;
-		slave_config->src_addr_width = buswidth;
-	}
-
-	slave_config->device_fc = false;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_hwparams_to_dma_slave_config);
-
-/**
- * snd_dmaengine_pcm_set_config_from_dai_data() - Initializes a dma slave config
- *  using DAI DMA data.
- * @substream: PCM substream
- * @dma_data: DAI DMA data
- * @slave_config: DMA slave configuration
- *
- * Initializes the {dst,src}_addr, {dst,src}_maxburst, {dst,src}_addr_width
- * fields of the DMA slave config from the same fields of the DAI DMA
- * data struct. The src and dst fields will be initialized depending on the
- * direction of the substream. If the substream is a playback stream the dst
- * fields will be initialized, if it is a capture stream the src fields will be
- * initialized. The {dst,src}_addr_width field will only be initialized if the
- * SND_DMAENGINE_PCM_DAI_FLAG_PACK flag is set or if the addr_width field of
- * the DAI DMA data struct is not equal to DMA_SLAVE_BUSWIDTH_UNDEFINED. If
- * both conditions are met the latter takes priority.
- */
-void snd_dmaengine_pcm_set_config_from_dai_data(
-	const struct snd_pcm_substream *substream,
-	const struct snd_dmaengine_dai_dma_data *dma_data,
-	struct dma_slave_config *slave_config)
-{
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config->dst_addr = dma_data->addr;
-		slave_config->dst_maxburst = dma_data->maxburst;
-		if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)
-			slave_config->dst_addr_width =
-				DMA_SLAVE_BUSWIDTH_UNDEFINED;
-		if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED)
-			slave_config->dst_addr_width = dma_data->addr_width;
-	} else {
-		slave_config->src_addr = dma_data->addr;
-		slave_config->src_maxburst = dma_data->maxburst;
-		if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)
-			slave_config->src_addr_width =
-				DMA_SLAVE_BUSWIDTH_UNDEFINED;
-		if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED)
-			slave_config->src_addr_width = dma_data->addr_width;
-	}
-
-	slave_config->peripheral_config = dma_data->peripheral_config;
-	slave_config->peripheral_size = dma_data->peripheral_size;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data);
-
-static void dmaengine_pcm_dma_complete(void *arg)
-{
-	unsigned int new_pos;
-	struct snd_pcm_substream *substream = arg;
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	new_pos = prtd->pos + snd_pcm_lib_period_bytes(substream);
-	if (new_pos >= snd_pcm_lib_buffer_bytes(substream))
-		new_pos = 0;
-	prtd->pos = new_pos;
-
-	snd_pcm_period_elapsed(substream);
-}
-
-static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct dma_chan *chan = prtd->dma_chan;
-	struct dma_async_tx_descriptor *desc;
-	enum dma_transfer_direction direction;
-	unsigned long flags = DMA_CTRL_ACK;
-
-	direction = snd_pcm_substream_to_dma_direction(substream);
-
-	if (!substream->runtime->no_period_wakeup)
-		flags |= DMA_PREP_INTERRUPT;
-
-	prtd->pos = 0;
-	desc = dmaengine_prep_dma_cyclic(chan,
-		substream->runtime->dma_addr,
-		snd_pcm_lib_buffer_bytes(substream),
-		snd_pcm_lib_period_bytes(substream), direction, flags);
-
-	if (!desc)
-		return -ENOMEM;
-
-	desc->callback = dmaengine_pcm_dma_complete;
-	desc->callback_param = substream;
-	prtd->cookie = dmaengine_submit(desc);
-
-	return 0;
-}
-
-/**
- * snd_dmaengine_pcm_trigger - dmaengine based PCM trigger implementation
- * @substream: PCM substream
- * @cmd: Trigger command
- *
- * This function can be used as the PCM trigger callback for dmaengine based PCM
- * driver implementations.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int ret;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		ret = dmaengine_pcm_prepare_and_submit(substream);
-		if (ret)
-			return ret;
-		dma_async_issue_pending(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		dmaengine_resume(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-		if (runtime->info & SNDRV_PCM_INFO_PAUSE)
-			dmaengine_pause(prtd->dma_chan);
-		else
-			dmaengine_terminate_async(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		dmaengine_pause(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		dmaengine_terminate_async(prtd->dma_chan);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_trigger);
-
-/**
- * snd_dmaengine_pcm_pointer_no_residue - dmaengine based PCM pointer implementation
- * @substream: PCM substream
- *
- * This function is deprecated and should not be used by new drivers, as its
- * results may be unreliable.
- *
- * Return: PCM position in frames
- */
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	return bytes_to_frames(substream->runtime, prtd->pos);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer_no_residue);
-
-/**
- * snd_dmaengine_pcm_pointer - dmaengine based PCM pointer implementation
- * @substream: PCM substream
- *
- * This function can be used as the PCM pointer callback for dmaengine based PCM
- * driver implementations.
- *
- * Return: PCM position in frames
- */
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct dma_tx_state state;
-	enum dma_status status;
-	unsigned int buf_size;
-	unsigned int pos = 0;
-
-	status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state);
-	if (status == DMA_IN_PROGRESS || status == DMA_PAUSED) {
-		buf_size = snd_pcm_lib_buffer_bytes(substream);
-		if (state.residue > 0 && state.residue <= buf_size)
-			pos = buf_size - state.residue;
-
-		runtime->delay = bytes_to_frames(runtime,
-						 state.in_flight_bytes);
-	}
-
-	return bytes_to_frames(runtime, pos);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer);
-
-/**
- * snd_dmaengine_pcm_request_channel - Request channel for the dmaengine PCM
- * @filter_fn: Filter function used to request the DMA channel
- * @filter_data: Data passed to the DMA filter function
- *
- * This function request a DMA channel for usage with dmaengine PCM.
- *
- * Return: NULL or the requested DMA channel
- */
-struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
-	void *filter_data)
-{
-	dma_cap_mask_t mask;
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	dma_cap_set(DMA_CYCLIC, mask);
-
-	return dma_request_channel(mask, filter_fn, filter_data);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_request_channel);
-
-/**
- * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream
- * @substream: PCM substream
- * @chan: DMA channel to use for data transfers
- *
- * The function should usually be called from the pcm open callback. Note that
- * this function will use private_data field of the substream's runtime. So it
- * is not available to your pcm driver implementation.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
-	struct dma_chan *chan)
-{
-	struct dmaengine_pcm_runtime_data *prtd;
-	int ret;
-
-	if (!chan)
-		return -ENXIO;
-
-	ret = snd_pcm_hw_constraint_integer(substream->runtime,
-					    SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
-		return ret;
-
-	prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
-	if (!prtd)
-		return -ENOMEM;
-
-	prtd->dma_chan = chan;
-
-	substream->runtime->private_data = prtd;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open);
-
-/**
- * snd_dmaengine_pcm_open_request_chan - Open a dmaengine based PCM substream and request channel
- * @substream: PCM substream
- * @filter_fn: Filter function used to request the DMA channel
- * @filter_data: Data passed to the DMA filter function
- *
- * This function will request a DMA channel using the passed filter function and
- * data. The function should usually be called from the pcm open callback. Note
- * that this function will use private_data field of the substream's runtime. So
- * it is not available to your pcm driver implementation.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
-	dma_filter_fn filter_fn, void *filter_data)
-{
-	return snd_dmaengine_pcm_open(substream,
-		    snd_dmaengine_pcm_request_channel(filter_fn, filter_data));
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan);
-
-/**
- * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream
- * @substream: PCM substream
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	dmaengine_synchronize(prtd->dma_chan);
-	kfree(prtd);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close);
-
-/**
- * snd_dmaengine_pcm_close_release_chan - Close a dmaengine based PCM
- *					  substream and release channel
- * @substream: PCM substream
- *
- * Releases the DMA channel associated with the PCM substream.
- *
- * Return: zero if successful, or a negative error code
- */
-int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	dmaengine_synchronize(prtd->dma_chan);
-	dma_release_channel(prtd->dma_chan);
-	kfree(prtd);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan);
-
-/**
- * snd_dmaengine_pcm_refine_runtime_hwparams - Refine runtime hw params
- * @substream: PCM substream
- * @dma_data: DAI DMA data
- * @hw: PCM hw params
- * @chan: DMA channel to use for data transfers
- *
- * This function will query DMA capability, then refine the pcm hardware
- * parameters.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_refine_runtime_hwparams(
-	struct snd_pcm_substream *substream,
-	struct snd_dmaengine_dai_dma_data *dma_data,
-	struct snd_pcm_hardware *hw,
-	struct dma_chan *chan)
-{
-	struct dma_slave_caps dma_caps;
-	u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
-			  BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
-			  BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
-	snd_pcm_format_t i;
-	int ret = 0;
-
-	if (!hw || !chan || !dma_data)
-		return -EINVAL;
-
-	ret = dma_get_slave_caps(chan, &dma_caps);
-	if (ret == 0) {
-		if (dma_caps.cmd_pause && dma_caps.cmd_resume)
-			hw->info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
-		if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT)
-			hw->info |= SNDRV_PCM_INFO_BATCH;
-
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			addr_widths = dma_caps.dst_addr_widths;
-		else
-			addr_widths = dma_caps.src_addr_widths;
-	}
-
-	/*
-	 * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep
-	 * hw.formats set to 0, meaning no restrictions are in place.
-	 * In this case it's the responsibility of the DAI driver to
-	 * provide the supported format information.
-	 */
-	if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK))
-		/*
-		 * Prepare formats mask for valid/allowed sample types. If the
-		 * dma does not have support for the given physical word size,
-		 * it needs to be masked out so user space can not use the
-		 * format which produces corrupted audio.
-		 * In case the dma driver does not implement the slave_caps the
-		 * default assumption is that it supports 1, 2 and 4 bytes
-		 * widths.
-		 */
-		pcm_for_each_format(i) {
-			int bits = snd_pcm_format_physical_width(i);
-
-			/*
-			 * Enable only samples with DMA supported physical
-			 * widths
-			 */
-			switch (bits) {
-			case 8:
-			case 16:
-			case 24:
-			case 32:
-			case 64:
-				if (addr_widths & (1 << (bits / 8)))
-					hw->formats |= pcm_format_to_bits(i);
-				break;
-			default:
-				/* Unsupported types */
-				break;
-			}
-		}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_refine_runtime_hwparams);
-
-MODULE_LICENSE("GPL");
diff --git a/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h b/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h
deleted file mode 100755
index 2df54cf..0000000
--- a/snd-alpx/core/RedHat/5.14/dmaengine_pcm.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+
- *
- *  Copyright (C) 2012, Analog Devices Inc.
- *	Author: Lars-Peter Clausen <lars@metafoo.de>
- */
-
-#ifndef __SOUND_DMAENGINE_PCM_H__
-#define __SOUND_DMAENGINE_PCM_H__
-
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <linux/dmaengine.h>
-
-/**
- * snd_pcm_substream_to_dma_direction - Get dma_transfer_direction for a PCM
- *   substream
- * @substream: PCM substream
- *
- * Return: DMA transfer direction
- */
-static inline enum dma_transfer_direction
-snd_pcm_substream_to_dma_direction(const struct snd_pcm_substream *substream)
-{
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		return DMA_MEM_TO_DEV;
-	else
-		return DMA_DEV_TO_MEM;
-}
-
-int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
-	const struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config);
-int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream);
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
-	struct dma_chan *chan);
-int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream);
-
-int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
-	dma_filter_fn filter_fn, void *filter_data);
-int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream);
-
-struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
-	void *filter_data);
-struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream);
-
-/*
- * The DAI supports packed transfers, eg 2 16-bit samples in a 32-bit word.
- * If this flag is set the dmaengine driver won't put any restriction on
- * the supported sample formats and set the DMA transfer size to undefined.
- * The DAI driver is responsible to disable any unsupported formats in it's
- * configuration and catch corner cases that are not already handled in
- * the ALSA core.
- */
-#define SND_DMAENGINE_PCM_DAI_FLAG_PACK BIT(0)
-
-/**
- * struct snd_dmaengine_dai_dma_data - DAI DMA configuration data
- * @addr: Address of the DAI data source or destination register.
- * @addr_width: Width of the DAI data source or destination register.
- * @maxburst: Maximum number of words(note: words, as in units of the
- * src_addr_width member, not bytes) that can be send to or received from the
- * DAI in one burst.
- * @filter_data: Custom DMA channel filter data, this will usually be used when
- * requesting the DMA channel.
- * @chan_name: Custom channel name to use when requesting DMA channel.
- * @fifo_size: FIFO size of the DAI controller in bytes
- * @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
- * @peripheral_config: peripheral configuration for programming peripheral
- * for dmaengine transfer
- * @peripheral_size: peripheral configuration buffer size
- */
-struct snd_dmaengine_dai_dma_data {
-	dma_addr_t addr;
-	enum dma_slave_buswidth addr_width;
-	u32 maxburst;
-	void *filter_data;
-	const char *chan_name;
-	unsigned int fifo_size;
-	unsigned int flags;
-	void *peripheral_config;
-	size_t peripheral_size;
-};
-
-void snd_dmaengine_pcm_set_config_from_dai_data(
-	const struct snd_pcm_substream *substream,
-	const struct snd_dmaengine_dai_dma_data *dma_data,
-	struct dma_slave_config *config);
-
-int snd_dmaengine_pcm_refine_runtime_hwparams(
-	struct snd_pcm_substream *substream,
-	struct snd_dmaengine_dai_dma_data *dma_data,
-	struct snd_pcm_hardware *hw,
-	struct dma_chan *chan);
-
-/*
- * Try to request the DMA channel using compat_request_channel or
- * compat_filter_fn if it couldn't be requested through devicetree.
- */
-#define SND_DMAENGINE_PCM_FLAG_COMPAT BIT(0)
-/*
- * Don't try to request the DMA channels through devicetree. This flag only
- * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well.
- */
-#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
-/*
- * The PCM is half duplex and the DMA channel is shared between capture and
- * playback.
- */
-#define SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX BIT(3)
-
-/**
- * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM
- * @prepare_slave_config: Callback used to fill in the DMA slave_config for a
- *   PCM substream. Will be called from the PCM drivers hwparams callback.
- * @compat_request_channel: Callback to request a DMA channel for platforms
- *   which do not use devicetree.
- * @process: Callback used to apply processing on samples transferred from/to
- *   user space.
- * @compat_filter_fn: Will be used as the filter function when requesting a
- *  channel for platforms which do not use devicetree. The filter parameter
- *  will be the DAI's DMA data.
- * @dma_dev: If set, request DMA channel on this device rather than the DAI
- *  device.
- * @chan_names: If set, these custom DMA channel names will be requested at
- *  registration time.
- * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM.
- * @prealloc_buffer_size: Size of the preallocated audio buffer.
- *
- * Note: If both compat_request_channel and compat_filter_fn are set
- * compat_request_channel will be used to request the channel and
- * compat_filter_fn will be ignored. Otherwise the channel will be requested
- * using dma_request_channel with compat_filter_fn as the filter function.
- */
-struct snd_dmaengine_pcm_config {
-	int (*prepare_slave_config)(struct snd_pcm_substream *substream,
-			struct snd_pcm_hw_params *params,
-			struct dma_slave_config *slave_config);
-	struct dma_chan *(*compat_request_channel)(
-			struct snd_soc_pcm_runtime *rtd,
-			struct snd_pcm_substream *substream);
-	int (*process)(struct snd_pcm_substream *substream,
-		       int channel, unsigned long hwoff,
-		       void *buf, unsigned long bytes);
-	dma_filter_fn compat_filter_fn;
-	struct device *dma_dev;
-	const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];
-
-	const struct snd_pcm_hardware *pcm_hardware;
-	unsigned int prealloc_buffer_size;
-};
-
-int snd_dmaengine_pcm_register(struct device *dev,
-	const struct snd_dmaengine_pcm_config *config,
-	unsigned int flags);
-void snd_dmaengine_pcm_unregister(struct device *dev);
-
-int devm_snd_dmaengine_pcm_register(struct device *dev,
-	const struct snd_dmaengine_pcm_config *config,
-	unsigned int flags);
-
-int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
-	struct snd_pcm_hw_params *params,
-	struct dma_slave_config *slave_config);
-
-#define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm"
-
-struct dmaengine_pcm {
-	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
-	const struct snd_dmaengine_pcm_config *config;
-	struct snd_soc_component component;
-	unsigned int flags;
-};
-
-static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p)
-{
-	return container_of(p, struct dmaengine_pcm, component);
-}
-#endif
diff --git a/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c b/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c
deleted file mode 100755
index 494ec0c..0000000
--- a/snd-alpx/core/RedHat/5.14/pcm_dmaengine.c
+++ /dev/null
@@ -1,473 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2012, Analog Devices Inc.
- *	Author: Lars-Peter Clausen <lars@metafoo.de>
- *
- *  Based on:
- *	imx-pcm-dma-mx2.c, Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
- *	mxs-pcm.c, Copyright (C) 2011 Freescale Semiconductor, Inc.
- *	ep93xx-pcm.c, Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *		      Copyright (C) 2006 Applied Data Systems
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/dmaengine.h>
-#include <linux/slab.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <sound/dmaengine_pcm.h>
-
-struct dmaengine_pcm_runtime_data {
-	struct dma_chan *dma_chan;
-	dma_cookie_t cookie;
-
-	unsigned int pos;
-};
-
-static inline struct dmaengine_pcm_runtime_data *substream_to_prtd(
-	const struct snd_pcm_substream *substream)
-{
-	return substream->runtime->private_data;
-}
-
-struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	return prtd->dma_chan;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_get_chan);
-
-/**
- * snd_hwparams_to_dma_slave_config - Convert hw_params to dma_slave_config
- * @substream: PCM substream
- * @params: hw_params
- * @slave_config: DMA slave config
- *
- * This function can be used to initialize a dma_slave_config from a substream
- * and hw_params in a dmaengine based PCM driver implementation.
- *
- * Return: zero if successful, or a negative error code
- */
-int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
-	const struct snd_pcm_hw_params *params,
-	struct dma_slave_config *slave_config)
-{
-	enum dma_slave_buswidth buswidth;
-	int bits;
-
-	bits = params_physical_width(params);
-	if (bits < 8 || bits > 64)
-		return -EINVAL;
-	else if (bits == 8)
-		buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
-	else if (bits == 16)
-		buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
-	else if (bits == 24)
-		buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES;
-	else if (bits <= 32)
-		buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	else
-		buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES;
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config->direction = DMA_MEM_TO_DEV;
-		slave_config->dst_addr_width = buswidth;
-	} else {
-		slave_config->direction = DMA_DEV_TO_MEM;
-		slave_config->src_addr_width = buswidth;
-	}
-
-	slave_config->device_fc = false;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_hwparams_to_dma_slave_config);
-
-/**
- * snd_dmaengine_pcm_set_config_from_dai_data() - Initializes a dma slave config
- *  using DAI DMA data.
- * @substream: PCM substream
- * @dma_data: DAI DMA data
- * @slave_config: DMA slave configuration
- *
- * Initializes the {dst,src}_addr, {dst,src}_maxburst, {dst,src}_addr_width
- * fields of the DMA slave config from the same fields of the DAI DMA
- * data struct. The src and dst fields will be initialized depending on the
- * direction of the substream. If the substream is a playback stream the dst
- * fields will be initialized, if it is a capture stream the src fields will be
- * initialized. The {dst,src}_addr_width field will only be initialized if the
- * SND_DMAENGINE_PCM_DAI_FLAG_PACK flag is set or if the addr_width field of
- * the DAI DMA data struct is not equal to DMA_SLAVE_BUSWIDTH_UNDEFINED. If
- * both conditions are met the latter takes priority.
- */
-void snd_dmaengine_pcm_set_config_from_dai_data(
-	const struct snd_pcm_substream *substream,
-	const struct snd_dmaengine_dai_dma_data *dma_data,
-	struct dma_slave_config *slave_config)
-{
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config->dst_addr = dma_data->addr;
-		slave_config->dst_maxburst = dma_data->maxburst;
-		if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)
-			slave_config->dst_addr_width =
-				DMA_SLAVE_BUSWIDTH_UNDEFINED;
-		if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED)
-			slave_config->dst_addr_width = dma_data->addr_width;
-	} else {
-		slave_config->src_addr = dma_data->addr;
-		slave_config->src_maxburst = dma_data->maxburst;
-		if (dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)
-			slave_config->src_addr_width =
-				DMA_SLAVE_BUSWIDTH_UNDEFINED;
-		if (dma_data->addr_width != DMA_SLAVE_BUSWIDTH_UNDEFINED)
-			slave_config->src_addr_width = dma_data->addr_width;
-	}
-
-	slave_config->peripheral_config = dma_data->peripheral_config;
-	slave_config->peripheral_size = dma_data->peripheral_size;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data);
-
-static void dmaengine_pcm_dma_complete(void *arg)
-{
-	unsigned int new_pos;
-	struct snd_pcm_substream *substream = arg;
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	new_pos = prtd->pos + snd_pcm_lib_period_bytes(substream);
-	if (new_pos >= snd_pcm_lib_buffer_bytes(substream))
-		new_pos = 0;
-	prtd->pos = new_pos;
-
-	snd_pcm_period_elapsed(substream);
-}
-
-static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct dma_chan *chan = prtd->dma_chan;
-	struct dma_async_tx_descriptor *desc;
-	enum dma_transfer_direction direction;
-	unsigned long flags = DMA_CTRL_ACK;
-
-	direction = snd_pcm_substream_to_dma_direction(substream);
-
-	if (!substream->runtime->no_period_wakeup)
-		flags |= DMA_PREP_INTERRUPT;
-
-	prtd->pos = 0;
-	desc = dmaengine_prep_dma_cyclic(chan,
-		substream->runtime->dma_addr,
-		snd_pcm_lib_buffer_bytes(substream),
-		snd_pcm_lib_period_bytes(substream), direction, flags);
-
-	if (!desc)
-		return -ENOMEM;
-
-	desc->callback = dmaengine_pcm_dma_complete;
-	desc->callback_param = substream;
-	prtd->cookie = dmaengine_submit(desc);
-
-	return 0;
-}
-
-/**
- * snd_dmaengine_pcm_trigger - dmaengine based PCM trigger implementation
- * @substream: PCM substream
- * @cmd: Trigger command
- *
- * This function can be used as the PCM trigger callback for dmaengine based PCM
- * driver implementations.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int ret;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		ret = dmaengine_pcm_prepare_and_submit(substream);
-		if (ret)
-			return ret;
-		dma_async_issue_pending(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		dmaengine_resume(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-		if (runtime->info & SNDRV_PCM_INFO_PAUSE)
-			dmaengine_pause(prtd->dma_chan);
-		else
-			dmaengine_terminate_async(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		dmaengine_pause(prtd->dma_chan);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		dmaengine_terminate_async(prtd->dma_chan);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_trigger);
-
-/**
- * snd_dmaengine_pcm_pointer_no_residue - dmaengine based PCM pointer implementation
- * @substream: PCM substream
- *
- * This function is deprecated and should not be used by new drivers, as its
- * results may be unreliable.
- *
- * Return: PCM position in frames
- */
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	return bytes_to_frames(substream->runtime, prtd->pos);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer_no_residue);
-
-/**
- * snd_dmaengine_pcm_pointer - dmaengine based PCM pointer implementation
- * @substream: PCM substream
- *
- * This function can be used as the PCM pointer callback for dmaengine based PCM
- * driver implementations.
- *
- * Return: PCM position in frames
- */
-snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct dma_tx_state state;
-	enum dma_status status;
-	unsigned int buf_size;
-	unsigned int pos = 0;
-
-	status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state);
-	if (status == DMA_IN_PROGRESS || status == DMA_PAUSED) {
-		buf_size = snd_pcm_lib_buffer_bytes(substream);
-		if (state.residue > 0 && state.residue <= buf_size)
-			pos = buf_size - state.residue;
-
-		runtime->delay = bytes_to_frames(runtime,
-						 state.in_flight_bytes);
-	}
-
-	return bytes_to_frames(runtime, pos);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer);
-
-/**
- * snd_dmaengine_pcm_request_channel - Request channel for the dmaengine PCM
- * @filter_fn: Filter function used to request the DMA channel
- * @filter_data: Data passed to the DMA filter function
- *
- * This function request a DMA channel for usage with dmaengine PCM.
- *
- * Return: NULL or the requested DMA channel
- */
-struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn,
-	void *filter_data)
-{
-	dma_cap_mask_t mask;
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	dma_cap_set(DMA_CYCLIC, mask);
-
-	return dma_request_channel(mask, filter_fn, filter_data);
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_request_channel);
-
-/**
- * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream
- * @substream: PCM substream
- * @chan: DMA channel to use for data transfers
- *
- * The function should usually be called from the pcm open callback. Note that
- * this function will use private_data field of the substream's runtime. So it
- * is not available to your pcm driver implementation.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
-	struct dma_chan *chan)
-{
-	struct dmaengine_pcm_runtime_data *prtd;
-	int ret;
-
-	if (!chan)
-		return -ENXIO;
-
-	ret = snd_pcm_hw_constraint_integer(substream->runtime,
-					    SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
-		return ret;
-
-	prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
-	if (!prtd)
-		return -ENOMEM;
-
-	prtd->dma_chan = chan;
-
-	substream->runtime->private_data = prtd;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open);
-
-/**
- * snd_dmaengine_pcm_open_request_chan - Open a dmaengine based PCM substream and request channel
- * @substream: PCM substream
- * @filter_fn: Filter function used to request the DMA channel
- * @filter_data: Data passed to the DMA filter function
- *
- * This function will request a DMA channel using the passed filter function and
- * data. The function should usually be called from the pcm open callback. Note
- * that this function will use private_data field of the substream's runtime. So
- * it is not available to your pcm driver implementation.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream,
-	dma_filter_fn filter_fn, void *filter_data)
-{
-	return snd_dmaengine_pcm_open(substream,
-		    snd_dmaengine_pcm_request_channel(filter_fn, filter_data));
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan);
-
-/**
- * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream
- * @substream: PCM substream
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	dmaengine_synchronize(prtd->dma_chan);
-	kfree(prtd);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close);
-
-/**
- * snd_dmaengine_pcm_close_release_chan - Close a dmaengine based PCM
- *					  substream and release channel
- * @substream: PCM substream
- *
- * Releases the DMA channel associated with the PCM substream.
- *
- * Return: zero if successful, or a negative error code
- */
-int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream)
-{
-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
-
-	dmaengine_synchronize(prtd->dma_chan);
-	dma_release_channel(prtd->dma_chan);
-	kfree(prtd);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan);
-
-/**
- * snd_dmaengine_pcm_refine_runtime_hwparams - Refine runtime hw params
- * @substream: PCM substream
- * @dma_data: DAI DMA data
- * @hw: PCM hw params
- * @chan: DMA channel to use for data transfers
- *
- * This function will query DMA capability, then refine the pcm hardware
- * parameters.
- *
- * Return: 0 on success, a negative error code otherwise
- */
-int snd_dmaengine_pcm_refine_runtime_hwparams(
-	struct snd_pcm_substream *substream,
-	struct snd_dmaengine_dai_dma_data *dma_data,
-	struct snd_pcm_hardware *hw,
-	struct dma_chan *chan)
-{
-	struct dma_slave_caps dma_caps;
-	u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
-			  BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
-			  BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
-	snd_pcm_format_t i;
-	int ret = 0;
-
-	if (!hw || !chan || !dma_data)
-		return -EINVAL;
-
-	ret = dma_get_slave_caps(chan, &dma_caps);
-	if (ret == 0) {
-		if (dma_caps.cmd_pause && dma_caps.cmd_resume)
-			hw->info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
-		if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT)
-			hw->info |= SNDRV_PCM_INFO_BATCH;
-
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			addr_widths = dma_caps.dst_addr_widths;
-		else
-			addr_widths = dma_caps.src_addr_widths;
-	}
-
-	/*
-	 * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep
-	 * hw.formats set to 0, meaning no restrictions are in place.
-	 * In this case it's the responsibility of the DAI driver to
-	 * provide the supported format information.
-	 */
-	if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK))
-		/*
-		 * Prepare formats mask for valid/allowed sample types. If the
-		 * dma does not have support for the given physical word size,
-		 * it needs to be masked out so user space can not use the
-		 * format which produces corrupted audio.
-		 * In case the dma driver does not implement the slave_caps the
-		 * default assumption is that it supports 1, 2 and 4 bytes
-		 * widths.
-		 */
-		pcm_for_each_format(i) {
-			int bits = snd_pcm_format_physical_width(i);
-
-			/*
-			 * Enable only samples with DMA supported physical
-			 * widths
-			 */
-			switch (bits) {
-			case 8:
-			case 16:
-			case 24:
-			case 32:
-			case 64:
-				if (addr_widths & (1 << (bits / 8)))
-					hw->formats |= pcm_format_to_bits(i);
-				break;
-			default:
-				/* Unsupported types */
-				break;
-			}
-		}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_refine_runtime_hwparams);
-
-MODULE_LICENSE("GPL");