import whole driver package

7 files changed, 0 insertions, 3862 deletions

diff --git a/snd-alpx/core/generic/6.2/amd_xdma.h b/snd-alpx/core/generic/6.2/amd_xdma.h
deleted file mode 100644
index b5e23e1..0000000
--- a/snd-alpx/core/generic/6.2/amd_xdma.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2022, Advanced Micro Devices, Inc.
- */
-
-#ifndef _PLATDATA_AMD_XDMA_H
-#define _PLATDATA_AMD_XDMA_H
-
-#include <linux/dmaengine.h>
-
-/**
- * struct xdma_chan_info - DMA channel information
- *	This information is used to match channel when request dma channel
- * @dir: Channel transfer direction
- */
-struct xdma_chan_info {
-	enum dma_transfer_direction dir;
-};
-
-#define XDMA_FILTER_PARAM(chan_info)	((void *)(chan_info))
-
-struct dma_slave_map;
-
-/**
- * struct xdma_platdata - platform specific data for XDMA engine
- * @max_dma_channels: Maximum dma channels in each direction
- */
-struct xdma_platdata {
-	u32 max_dma_channels;
-	u32 device_map_cnt;
-	struct dma_slave_map *device_map;
-};
-
-#endif /* _PLATDATA_AMD_XDMA_H */
diff --git a/snd-alpx/core/generic/6.2/dmaengine.c b/snd-alpx/core/generic/6.2/dmaengine.c
deleted file mode 100644
index 8a6e6b6..0000000
--- a/snd-alpx/core/generic/6.2/dmaengine.c
+++ /dev/null
@@ -1,1652 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
- */
-
-/*
- * This code implements the DMA subsystem. It provides a HW-neutral interface
- * for other kernel code to use asynchronous memory copy capabilities,
- * if present, and allows different HW DMA drivers to register as providing
- * this capability.
- *
- * Due to the fact we are accelerating what is already a relatively fast
- * operation, the code goes to great lengths to avoid additional overhead,
- * such as locking.
- *
- * LOCKING:
- *
- * The subsystem keeps a global list of dma_device structs it is protected by a
- * mutex, dma_list_mutex.
- *
- * A subsystem can get access to a channel by calling dmaengine_get() followed
- * by dma_find_channel(), or if it has need for an exclusive channel it can call
- * dma_request_channel().  Once a channel is allocated a reference is taken
- * against its corresponding driver to disable removal.
- *
- * Each device has a channels list, which runs unlocked but is never modified
- * once the device is registered, it's just setup by the driver.
- *
- * See Documentation/driver-api/dmaengine for more details
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/device.h>
-#include <linux/dmaengine.h>
-#include <linux/hardirq.h>
-#include <linux/spinlock.h>
-#include <linux/percpu.h>
-#include <linux/rcupdate.h>
-#include <linux/mutex.h>
-#include <linux/jiffies.h>
-#include <linux/rculist.h>
-#include <linux/idr.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-#include <linux/acpi_dma.h>
-#include <linux/of_dma.h>
-#include <linux/mempool.h>
-#include <linux/numa.h>
-
-#include "dmaengine.h"
-
-static DEFINE_MUTEX(dma_list_mutex);
-static DEFINE_IDA(dma_ida);
-static LIST_HEAD(dma_device_list);
-static long dmaengine_ref_count;
-
-/* --- debugfs implementation --- */
-#ifdef CONFIG_DEBUG_FS
-#include <linux/debugfs.h>
-
-static struct dentry *rootdir;
-
-static void dmaengine_debug_register(struct dma_device *dma_dev)
-{
-	dma_dev->dbg_dev_root = debugfs_create_dir(dev_name(dma_dev->dev),
-						   rootdir);
-	if (IS_ERR(dma_dev->dbg_dev_root))
-		dma_dev->dbg_dev_root = NULL;
-}
-
-static void dmaengine_debug_unregister(struct dma_device *dma_dev)
-{
-	debugfs_remove_recursive(dma_dev->dbg_dev_root);
-	dma_dev->dbg_dev_root = NULL;
-}
-
-static void dmaengine_dbg_summary_show(struct seq_file *s,
-				       struct dma_device *dma_dev)
-{
-	struct dma_chan *chan;
-
-	list_for_each_entry(chan, &dma_dev->channels, device_node) {
-		if (chan->client_count) {
-			seq_printf(s, " %-13s| %s", dma_chan_name(chan),
-				   chan->dbg_client_name ?: "in-use");
-
-			if (chan->router)
-				seq_printf(s, " (via router: %s)\n",
-					dev_name(chan->router->dev));
-			else
-				seq_puts(s, "\n");
-		}
-	}
-}
-
-static int dmaengine_summary_show(struct seq_file *s, void *data)
-{
-	struct dma_device *dma_dev = NULL;
-
-	mutex_lock(&dma_list_mutex);
-	list_for_each_entry(dma_dev, &dma_device_list, global_node) {
-		seq_printf(s, "dma%d (%s): number of channels: %u\n",
-			   dma_dev->dev_id, dev_name(dma_dev->dev),
-			   dma_dev->chancnt);
-
-		if (dma_dev->dbg_summary_show)
-			dma_dev->dbg_summary_show(s, dma_dev);
-		else
-			dmaengine_dbg_summary_show(s, dma_dev);
-
-		if (!list_is_last(&dma_dev->global_node, &dma_device_list))
-			seq_puts(s, "\n");
-	}
-	mutex_unlock(&dma_list_mutex);
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(dmaengine_summary);
-
-static void __init dmaengine_debugfs_init(void)
-{
-	rootdir = debugfs_create_dir("dmaengine", NULL);
-
-	/* /sys/kernel/debug/dmaengine/summary */
-	debugfs_create_file("summary", 0444, rootdir, NULL,
-			    &dmaengine_summary_fops);
-}
-#else
-static inline void dmaengine_debugfs_init(void) { }
-static inline int dmaengine_debug_register(struct dma_device *dma_dev)
-{
-	return 0;
-}
-
-static inline void dmaengine_debug_unregister(struct dma_device *dma_dev) { }
-#endif	/* DEBUG_FS */
-
-/* --- sysfs implementation --- */
-
-#define DMA_SLAVE_NAME	"slave"
-
-/**
- * dev_to_dma_chan - convert a device pointer to its sysfs container object
- * @dev:	device node
- *
- * Must be called under dma_list_mutex.
- */
-static struct dma_chan *dev_to_dma_chan(struct device *dev)
-{
-	struct dma_chan_dev *chan_dev;
-
-	chan_dev = container_of(dev, typeof(*chan_dev), device);
-	return chan_dev->chan;
-}
-
-static ssize_t memcpy_count_show(struct device *dev,
-				 struct device_attribute *attr, char *buf)
-{
-	struct dma_chan *chan;
-	unsigned long count = 0;
-	int i;
-	int err;
-
-	mutex_lock(&dma_list_mutex);
-	chan = dev_to_dma_chan(dev);
-	if (chan) {
-		for_each_possible_cpu(i)
-			count += per_cpu_ptr(chan->local, i)->memcpy_count;
-		err = sprintf(buf, "%lu\n", count);
-	} else
-		err = -ENODEV;
-	mutex_unlock(&dma_list_mutex);
-
-	return err;
-}
-static DEVICE_ATTR_RO(memcpy_count);
-
-static ssize_t bytes_transferred_show(struct device *dev,
-				      struct device_attribute *attr, char *buf)
-{
-	struct dma_chan *chan;
-	unsigned long count = 0;
-	int i;
-	int err;
-
-	mutex_lock(&dma_list_mutex);
-	chan = dev_to_dma_chan(dev);
-	if (chan) {
-		for_each_possible_cpu(i)
-			count += per_cpu_ptr(chan->local, i)->bytes_transferred;
-		err = sprintf(buf, "%lu\n", count);
-	} else
-		err = -ENODEV;
-	mutex_unlock(&dma_list_mutex);
-
-	return err;
-}
-static DEVICE_ATTR_RO(bytes_transferred);
-
-static ssize_t in_use_show(struct device *dev, struct device_attribute *attr,
-			   char *buf)
-{
-	struct dma_chan *chan;
-	int err;
-
-	mutex_lock(&dma_list_mutex);
-	chan = dev_to_dma_chan(dev);
-	if (chan)
-		err = sprintf(buf, "%d\n", chan->client_count);
-	else
-		err = -ENODEV;
-	mutex_unlock(&dma_list_mutex);
-
-	return err;
-}
-static DEVICE_ATTR_RO(in_use);
-
-static struct attribute *dma_dev_attrs[] = {
-	&dev_attr_memcpy_count.attr,
-	&dev_attr_bytes_transferred.attr,
-	&dev_attr_in_use.attr,
-	NULL,
-};
-ATTRIBUTE_GROUPS(dma_dev);
-
-static void chan_dev_release(struct device *dev)
-{
-	struct dma_chan_dev *chan_dev;
-
-	chan_dev = container_of(dev, typeof(*chan_dev), device);
-	kfree(chan_dev);
-}
-
-static struct class dma_devclass = {
-	.name		= "dma",
-	.dev_groups	= dma_dev_groups,
-	.dev_release	= chan_dev_release,
-};
-
-/* --- client and device registration --- */
-
-/* enable iteration over all operation types */
-static dma_cap_mask_t dma_cap_mask_all;
-
-/**
- * struct dma_chan_tbl_ent - tracks channel allocations per core/operation
- * @chan:	associated channel for this entry
- */
-struct dma_chan_tbl_ent {
-	struct dma_chan *chan;
-};
-
-/* percpu lookup table for memory-to-memory offload providers */
-static struct dma_chan_tbl_ent __percpu *channel_table[DMA_TX_TYPE_END];
-
-static int __init dma_channel_table_init(void)
-{
-	enum dma_transaction_type cap;
-	int err = 0;
-
-	bitmap_fill(dma_cap_mask_all.bits, DMA_TX_TYPE_END);
-
-	/* 'interrupt', 'private', and 'slave' are channel capabilities,
-	 * but are not associated with an operation so they do not need
-	 * an entry in the channel_table
-	 */
-	clear_bit(DMA_INTERRUPT, dma_cap_mask_all.bits);
-	clear_bit(DMA_PRIVATE, dma_cap_mask_all.bits);
-	clear_bit(DMA_SLAVE, dma_cap_mask_all.bits);
-
-	for_each_dma_cap_mask(cap, dma_cap_mask_all) {
-		channel_table[cap] = alloc_percpu(struct dma_chan_tbl_ent);
-		if (!channel_table[cap]) {
-			err = -ENOMEM;
-			break;
-		}
-	}
-
-	if (err) {
-		pr_err("dmaengine dma_channel_table_init failure: %d\n", err);
-		for_each_dma_cap_mask(cap, dma_cap_mask_all)
-			free_percpu(channel_table[cap]);
-	}
-
-	return err;
-}
-arch_initcall(dma_channel_table_init);
-
-/**
- * dma_chan_is_local - checks if the channel is in the same NUMA-node as the CPU
- * @chan:	DMA channel to test
- * @cpu:	CPU index which the channel should be close to
- *
- * Returns true if the channel is in the same NUMA-node as the CPU.
- */
-static bool dma_chan_is_local(struct dma_chan *chan, int cpu)
-{
-	int node = dev_to_node(chan->device->dev);
-	return node == NUMA_NO_NODE ||
-		cpumask_test_cpu(cpu, cpumask_of_node(node));
-}
-
-/**
- * min_chan - finds the channel with min count and in the same NUMA-node as the CPU
- * @cap:	capability to match
- * @cpu:	CPU index which the channel should be close to
- *
- * If some channels are close to the given CPU, the one with the lowest
- * reference count is returned. Otherwise, CPU is ignored and only the
- * reference count is taken into account.
- *
- * Must be called under dma_list_mutex.
- */
-static struct dma_chan *min_chan(enum dma_transaction_type cap, int cpu)
-{
-	struct dma_device *device;
-	struct dma_chan *chan;
-	struct dma_chan *min = NULL;
-	struct dma_chan *localmin = NULL;
-
-	list_for_each_entry(device, &dma_device_list, global_node) {
-		if (!dma_has_cap(cap, device->cap_mask) ||
-		    dma_has_cap(DMA_PRIVATE, device->cap_mask))
-			continue;
-		list_for_each_entry(chan, &device->channels, device_node) {
-			if (!chan->client_count)
-				continue;
-			if (!min || chan->table_count < min->table_count)
-				min = chan;
-
-			if (dma_chan_is_local(chan, cpu))
-				if (!localmin ||
-				    chan->table_count < localmin->table_count)
-					localmin = chan;
-		}
-	}
-
-	chan = localmin ? localmin : min;
-
-	if (chan)
-		chan->table_count++;
-
-	return chan;
-}
-
-/**
- * dma_channel_rebalance - redistribute the available channels
- *
- * Optimize for CPU isolation (each CPU gets a dedicated channel for an
- * operation type) in the SMP case, and operation isolation (avoid
- * multi-tasking channels) in the non-SMP case.
- *
- * Must be called under dma_list_mutex.
- */
-static void dma_channel_rebalance(void)
-{
-	struct dma_chan *chan;
-	struct dma_device *device;
-	int cpu;
-	int cap;
-
-	/* undo the last distribution */
-	for_each_dma_cap_mask(cap, dma_cap_mask_all)
-		for_each_possible_cpu(cpu)
-			per_cpu_ptr(channel_table[cap], cpu)->chan = NULL;
-
-	list_for_each_entry(device, &dma_device_list, global_node) {
-		if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
-			continue;
-		list_for_each_entry(chan, &device->channels, device_node)
-			chan->table_count = 0;
-	}
-
-	/* don't populate the channel_table if no clients are available */
-	if (!dmaengine_ref_count)
-		return;
-
-	/* redistribute available channels */
-	for_each_dma_cap_mask(cap, dma_cap_mask_all)
-		for_each_online_cpu(cpu) {
-			chan = min_chan(cap, cpu);
-			per_cpu_ptr(channel_table[cap], cpu)->chan = chan;
-		}
-}
-
-static int dma_device_satisfies_mask(struct dma_device *device,
-				     const dma_cap_mask_t *want)
-{
-	dma_cap_mask_t has;
-
-	bitmap_and(has.bits, want->bits, device->cap_mask.bits,
-		DMA_TX_TYPE_END);
-	return bitmap_equal(want->bits, has.bits, DMA_TX_TYPE_END);
-}
-
-static struct module *dma_chan_to_owner(struct dma_chan *chan)
-{
-	return chan->device->owner;
-}
-
-/**
- * balance_ref_count - catch up the channel reference count
- * @chan:	channel to balance ->client_count versus dmaengine_ref_count
- *
- * Must be called under dma_list_mutex.
- */
-static void balance_ref_count(struct dma_chan *chan)
-{
-	struct module *owner = dma_chan_to_owner(chan);
-
-	while (chan->client_count < dmaengine_ref_count) {
-		__module_get(owner);
-		chan->client_count++;
-	}
-}
-
-static void dma_device_release(struct kref *ref)
-{
-	struct dma_device *device = container_of(ref, struct dma_device, ref);
-
-	list_del_rcu(&device->global_node);
-	dma_channel_rebalance();
-
-	if (device->device_release)
-		device->device_release(device);
-}
-
-static void dma_device_put(struct dma_device *device)
-{
-	lockdep_assert_held(&dma_list_mutex);
-	kref_put(&device->ref, dma_device_release);
-}
-
-/**
- * dma_chan_get - try to grab a DMA channel's parent driver module
- * @chan:	channel to grab
- *
- * Must be called under dma_list_mutex.
- */
-static int dma_chan_get(struct dma_chan *chan)
-{
-	struct module *owner = dma_chan_to_owner(chan);
-	int ret;
-
-	/* The channel is already in use, update client count */
-	if (chan->client_count) {
-		__module_get(owner);
-		chan->client_count++;
-		return 0;
-	}
-
-	if (!try_module_get(owner))
-		return -ENODEV;
-
-	ret = kref_get_unless_zero(&chan->device->ref);
-	if (!ret) {
-		ret = -ENODEV;
-		goto module_put_out;
-	}
-
-	/* allocate upon first client reference */
-	if (chan->device->device_alloc_chan_resources) {
-		ret = chan->device->device_alloc_chan_resources(chan);
-		if (ret < 0)
-			goto err_out;
-	}
-
-	chan->client_count++;
-
-	if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
-		balance_ref_count(chan);
-
-	return 0;
-
-err_out:
-	dma_device_put(chan->device);
-module_put_out:
-	module_put(owner);
-	return ret;
-}
-
-/**
- * dma_chan_put - drop a reference to a DMA channel's parent driver module
- * @chan:	channel to release
- *
- * Must be called under dma_list_mutex.
- */
-static void dma_chan_put(struct dma_chan *chan)
-{
-	/* This channel is not in use, bail out */
-	if (!chan->client_count)
-		return;
-
-	chan->client_count--;
-
-	/* This channel is not in use anymore, free it */
-	if (!chan->client_count && chan->device->device_free_chan_resources) {
-		/* Make sure all operations have completed */
-		dmaengine_synchronize(chan);
-		chan->device->device_free_chan_resources(chan);
-	}
-
-	/* If the channel is used via a DMA request router, free the mapping */
-	if (chan->router && chan->router->route_free) {
-		chan->router->route_free(chan->router->dev, chan->route_data);
-		chan->router = NULL;
-		chan->route_data = NULL;
-	}
-
-	dma_device_put(chan->device);
-	module_put(dma_chan_to_owner(chan));
-}
-
-enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie)
-{
-	enum dma_status status;
-	unsigned long dma_sync_wait_timeout = jiffies + msecs_to_jiffies(5000);
-
-	dma_async_issue_pending(chan);
-	do {
-		status = dma_async_is_tx_complete(chan, cookie, NULL, NULL);
-		if (time_after_eq(jiffies, dma_sync_wait_timeout)) {
-			dev_err(chan->device->dev, "%s: timeout!\n", __func__);
-			return DMA_ERROR;
-		}
-		if (status != DMA_IN_PROGRESS)
-			break;
-		cpu_relax();
-	} while (1);
-
-	return status;
-}
-EXPORT_SYMBOL(dma_sync_wait);
-
-/**
- * dma_find_channel - find a channel to carry out the operation
- * @tx_type:	transaction type
- */
-struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
-{
-	return this_cpu_read(channel_table[tx_type]->chan);
-}
-EXPORT_SYMBOL(dma_find_channel);
-
-/**
- * dma_issue_pending_all - flush all pending operations across all channels
- */
-void dma_issue_pending_all(void)
-{
-	struct dma_device *device;
-	struct dma_chan *chan;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(device, &dma_device_list, global_node) {
-		if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
-			continue;
-		list_for_each_entry(chan, &device->channels, device_node)
-			if (chan->client_count)
-				device->device_issue_pending(chan);
-	}
-	rcu_read_unlock();
-}
-EXPORT_SYMBOL(dma_issue_pending_all);
-
-int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps)
-{
-	struct dma_device *device;
-
-	if (!chan || !caps)
-		return -EINVAL;
-
-	device = chan->device;
-
-	/* check if the channel supports slave transactions */
-	if (!(test_bit(DMA_SLAVE, device->cap_mask.bits) ||
-	      test_bit(DMA_CYCLIC, device->cap_mask.bits)))
-		return -ENXIO;
-
-	/*
-	 * Check whether it reports it uses the generic slave
-	 * capabilities, if not, that means it doesn't support any
-	 * kind of slave capabilities reporting.
-	 */
-	if (!device->directions)
-		return -ENXIO;
-
-	caps->src_addr_widths = device->src_addr_widths;
-	caps->dst_addr_widths = device->dst_addr_widths;
-	caps->directions = device->directions;
-	caps->min_burst = device->min_burst;
-	caps->max_burst = device->max_burst;
-	caps->max_sg_burst = device->max_sg_burst;
-	caps->residue_granularity = device->residue_granularity;
-	caps->descriptor_reuse = device->descriptor_reuse;
-	caps->cmd_pause = !!device->device_pause;
-	caps->cmd_resume = !!device->device_resume;
-	caps->cmd_terminate = !!device->device_terminate_all;
-
-	/*
-	 * DMA engine device might be configured with non-uniformly
-	 * distributed slave capabilities per device channels. In this
-	 * case the corresponding driver may provide the device_caps
-	 * callback to override the generic capabilities with
-	 * channel-specific ones.
-	 */
-	if (device->device_caps)
-		device->device_caps(chan, caps);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(dma_get_slave_caps);
-
-static struct dma_chan *private_candidate(const dma_cap_mask_t *mask,
-					  struct dma_device *dev,
-					  dma_filter_fn fn, void *fn_param)
-{
-	struct dma_chan *chan;
-
-	if (mask && !dma_device_satisfies_mask(dev, mask)) {
-		dev_dbg(dev->dev, "%s: wrong capabilities\n", __func__);
-		return NULL;
-	}
-	/* devices with multiple channels need special handling as we need to
-	 * ensure that all channels are either private or public.
-	 */
-	if (dev->chancnt > 1 && !dma_has_cap(DMA_PRIVATE, dev->cap_mask))
-		list_for_each_entry(chan, &dev->channels, device_node) {
-			/* some channels are already publicly allocated */
-			if (chan->client_count)
-				return NULL;
-		}
-
-	list_for_each_entry(chan, &dev->channels, device_node) {
-		if (chan->client_count) {
-			dev_dbg(dev->dev, "%s: %s busy\n",
-				 __func__, dma_chan_name(chan));
-			continue;
-		}
-		if (fn && !fn(chan, fn_param)) {
-			dev_dbg(dev->dev, "%s: %s filter said false\n",
-				 __func__, dma_chan_name(chan));
-			continue;
-		}
-		return chan;
-	}
-
-	return NULL;
-}
-
-static struct dma_chan *find_candidate(struct dma_device *device,
-				       const dma_cap_mask_t *mask,
-				       dma_filter_fn fn, void *fn_param)
-{
-	struct dma_chan *chan = private_candidate(mask, device, fn, fn_param);
-	int err;
-
-	if (chan) {
-		/* Found a suitable channel, try to grab, prep, and return it.
-		 * We first set DMA_PRIVATE to disable balance_ref_count as this
-		 * channel will not be published in the general-purpose
-		 * allocator
-		 */
-		dma_cap_set(DMA_PRIVATE, device->cap_mask);
-		device->privatecnt++;
-		err = dma_chan_get(chan);
-
-		if (err) {
-			if (err == -ENODEV) {
-				dev_dbg(device->dev, "%s: %s module removed\n",
-					__func__, dma_chan_name(chan));
-				list_del_rcu(&device->global_node);
-			} else
-				dev_dbg(device->dev,
-					"%s: failed to get %s: (%d)\n",
-					 __func__, dma_chan_name(chan), err);
-
-			if (--device->privatecnt == 0)
-				dma_cap_clear(DMA_PRIVATE, device->cap_mask);
-
-			chan = ERR_PTR(err);
-		}
-	}
-
-	return chan ? chan : ERR_PTR(-EPROBE_DEFER);
-}
-
-/**
- * dma_get_slave_channel - try to get specific channel exclusively
- * @chan:	target channel
- */
-struct dma_chan *dma_get_slave_channel(struct dma_chan *chan)
-{
-	/* lock against __dma_request_channel */
-	mutex_lock(&dma_list_mutex);
-
-	if (chan->client_count == 0) {
-		struct dma_device *device = chan->device;
-		int err;
-
-		dma_cap_set(DMA_PRIVATE, device->cap_mask);
-		device->privatecnt++;
-		err = dma_chan_get(chan);
-		if (err) {
-			dev_dbg(chan->device->dev,
-				"%s: failed to get %s: (%d)\n",
-				__func__, dma_chan_name(chan), err);
-			chan = NULL;
-			if (--device->privatecnt == 0)
-				dma_cap_clear(DMA_PRIVATE, device->cap_mask);
-		}
-	} else
-		chan = NULL;
-
-	mutex_unlock(&dma_list_mutex);
-
-
-	return chan;
-}
-EXPORT_SYMBOL_GPL(dma_get_slave_channel);
-
-struct dma_chan *dma_get_any_slave_channel(struct dma_device *device)
-{
-	dma_cap_mask_t mask;
-	struct dma_chan *chan;
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	/* lock against __dma_request_channel */
-	mutex_lock(&dma_list_mutex);
-
-	chan = find_candidate(device, &mask, NULL, NULL);
-
-	mutex_unlock(&dma_list_mutex);
-
-	return IS_ERR(chan) ? NULL : chan;
-}
-EXPORT_SYMBOL_GPL(dma_get_any_slave_channel);
-
-/**
- * __dma_request_channel - try to allocate an exclusive channel
- * @mask:	capabilities that the channel must satisfy
- * @fn:		optional callback to disposition available channels
- * @fn_param:	opaque parameter to pass to dma_filter_fn()
- * @np:		device node to look for DMA channels
- *
- * Returns pointer to appropriate DMA channel on success or NULL.
- */
-struct dma_chan *__dma_request_channel(const dma_cap_mask_t *mask,
-				       dma_filter_fn fn, void *fn_param,
-				       struct device_node *np)
-{
-	struct dma_device *device, *_d;
-	struct dma_chan *chan = NULL;
-
-	/* Find a channel */
-	mutex_lock(&dma_list_mutex);
-	list_for_each_entry_safe(device, _d, &dma_device_list, global_node) {
-		/* Finds a DMA controller with matching device node */
-		if (np && device->dev->of_node && np != device->dev->of_node)
-			continue;
-
-		chan = find_candidate(device, mask, fn, fn_param);
-		if (!IS_ERR(chan))
-			break;
-
-		chan = NULL;
-	}
-	mutex_unlock(&dma_list_mutex);
-
-	pr_debug("%s: %s (%s)\n",
-		 __func__,
-		 chan ? "success" : "fail",
-		 chan ? dma_chan_name(chan) : NULL);
-
-	return chan;
-}
-EXPORT_SYMBOL_GPL(__dma_request_channel);
-
-static const struct dma_slave_map *dma_filter_match(struct dma_device *device,
-						    const char *name,
-						    struct device *dev)
-{
-	int i;
-
-	if (!device->filter.mapcnt)
-		return NULL;
-
-	for (i = 0; i < device->filter.mapcnt; i++) {
-		const struct dma_slave_map *map = &device->filter.map[i];
-
-		if (!strcmp(map->devname, dev_name(dev)) &&
-		    !strcmp(map->slave, name))
-			return map;
-	}
-
-	return NULL;
-}
-
-/**
- * dma_request_chan - try to allocate an exclusive slave channel
- * @dev:	pointer to client device structure
- * @name:	slave channel name
- *
- * Returns pointer to appropriate DMA channel on success or an error pointer.
- */
-struct dma_chan *dma_request_chan(struct device *dev, const char *name)
-{
-	struct dma_device *d, *_d;
-	struct dma_chan *chan = NULL;
-
-	/* If device-tree is present get slave info from here */
-	if (dev->of_node)
-		chan = of_dma_request_slave_channel(dev->of_node, name);
-
-	/* If device was enumerated by ACPI get slave info from here */
-	if (has_acpi_companion(dev) && !chan)
-		chan = acpi_dma_request_slave_chan_by_name(dev, name);
-
-	if (PTR_ERR(chan) == -EPROBE_DEFER)
-		return chan;
-
-	if (!IS_ERR_OR_NULL(chan))
-		goto found;
-
-	/* Try to find the channel via the DMA filter map(s) */
-	mutex_lock(&dma_list_mutex);
-	list_for_each_entry_safe(d, _d, &dma_device_list, global_node) {
-		dma_cap_mask_t mask;
-		const struct dma_slave_map *map = dma_filter_match(d, name, dev);
-
-		if (!map)
-			continue;
-
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
-
-		chan = find_candidate(d, &mask, d->filter.fn, map->param);
-		if (!IS_ERR(chan))
-			break;
-	}
-	mutex_unlock(&dma_list_mutex);
-
-	if (IS_ERR(chan))
-		return chan;
-	if (!chan)
-		return ERR_PTR(-EPROBE_DEFER);
-
-found:
-#ifdef CONFIG_DEBUG_FS
-	chan->dbg_client_name = kasprintf(GFP_KERNEL, "%s:%s", dev_name(dev),
-					  name);
-#endif
-
-	chan->name = kasprintf(GFP_KERNEL, "dma:%s", name);
-	if (!chan->name)
-		return chan;
-	chan->slave = dev;
-
-	if (sysfs_create_link(&chan->dev->device.kobj, &dev->kobj,
-			      DMA_SLAVE_NAME))
-		dev_warn(dev, "Cannot create DMA %s symlink\n", DMA_SLAVE_NAME);
-	if (sysfs_create_link(&dev->kobj, &chan->dev->device.kobj, chan->name))
-		dev_warn(dev, "Cannot create DMA %s symlink\n", chan->name);
-
-	return chan;
-}
-EXPORT_SYMBOL_GPL(dma_request_chan);
-
-/**
- * dma_request_chan_by_mask - allocate a channel satisfying certain capabilities
- * @mask:	capabilities that the channel must satisfy
- *
- * Returns pointer to appropriate DMA channel on success or an error pointer.
- */
-struct dma_chan *dma_request_chan_by_mask(const dma_cap_mask_t *mask)
-{
-	struct dma_chan *chan;
-
-	if (!mask)
-		return ERR_PTR(-ENODEV);
-
-	chan = __dma_request_channel(mask, NULL, NULL, NULL);
-	if (!chan) {
-		mutex_lock(&dma_list_mutex);
-		if (list_empty(&dma_device_list))
-			chan = ERR_PTR(-EPROBE_DEFER);
-		else
-			chan = ERR_PTR(-ENODEV);
-		mutex_unlock(&dma_list_mutex);
-	}
-
-	return chan;
-}
-EXPORT_SYMBOL_GPL(dma_request_chan_by_mask);
-
-void dma_release_channel(struct dma_chan *chan)
-{
-	mutex_lock(&dma_list_mutex);
-	WARN_ONCE(chan->client_count != 1,
-		  "chan reference count %d != 1\n", chan->client_count);
-	dma_chan_put(chan);
-	/* drop PRIVATE cap enabled by __dma_request_channel() */
-	if (--chan->device->privatecnt == 0)
-		dma_cap_clear(DMA_PRIVATE, chan->device->cap_mask);
-
-	if (chan->slave) {
-		sysfs_remove_link(&chan->dev->device.kobj, DMA_SLAVE_NAME);
-		sysfs_remove_link(&chan->slave->kobj, chan->name);
-		kfree(chan->name);
-		chan->name = NULL;
-		chan->slave = NULL;
-	}
-
-#ifdef CONFIG_DEBUG_FS
-	kfree(chan->dbg_client_name);
-	chan->dbg_client_name = NULL;
-#endif
-	mutex_unlock(&dma_list_mutex);
-}
-EXPORT_SYMBOL_GPL(dma_release_channel);
-
-/**
- * dmaengine_get - register interest in dma_channels
- */
-void dmaengine_get(void)
-{
-	struct dma_device *device, *_d;
-	struct dma_chan *chan;
-	int err;
-
-	mutex_lock(&dma_list_mutex);
-	dmaengine_ref_count++;
-
-	/* try to grab channels */
-	list_for_each_entry_safe(device, _d, &dma_device_list, global_node) {
-		if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
-			continue;
-		list_for_each_entry(chan, &device->channels, device_node) {
-			err = dma_chan_get(chan);
-			if (err == -ENODEV) {
-				/* module removed before we could use it */
-				list_del_rcu(&device->global_node);
-				break;
-			} else if (err)
-				dev_dbg(chan->device->dev,
-					"%s: failed to get %s: (%d)\n",
-					__func__, dma_chan_name(chan), err);
-		}
-	}
-
-	/* if this is the first reference and there were channels
-	 * waiting we need to rebalance to get those channels
-	 * incorporated into the channel table
-	 */
-	if (dmaengine_ref_count == 1)
-		dma_channel_rebalance();
-	mutex_unlock(&dma_list_mutex);
-}
-EXPORT_SYMBOL(dmaengine_get);
-
-/**
- * dmaengine_put - let DMA drivers be removed when ref_count == 0
- */
-void dmaengine_put(void)
-{
-	struct dma_device *device, *_d;
-	struct dma_chan *chan;
-
-	mutex_lock(&dma_list_mutex);
-	dmaengine_ref_count--;
-	BUG_ON(dmaengine_ref_count < 0);
-	/* drop channel references */
-	list_for_each_entry_safe(device, _d, &dma_device_list, global_node) {
-		if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
-			continue;
-		list_for_each_entry(chan, &device->channels, device_node)
-			dma_chan_put(chan);
-	}
-	mutex_unlock(&dma_list_mutex);
-}
-EXPORT_SYMBOL(dmaengine_put);
-
-static bool device_has_all_tx_types(struct dma_device *device)
-{
-	/* A device that satisfies this test has channels that will never cause
-	 * an async_tx channel switch event as all possible operation types can
-	 * be handled.
-	 */
-	#ifdef CONFIG_ASYNC_TX_DMA
-	if (!dma_has_cap(DMA_INTERRUPT, device->cap_mask))
-		return false;
-	#endif
-
-	#if IS_ENABLED(CONFIG_ASYNC_MEMCPY)
-	if (!dma_has_cap(DMA_MEMCPY, device->cap_mask))
-		return false;
-	#endif
-
-	#if IS_ENABLED(CONFIG_ASYNC_XOR)
-	if (!dma_has_cap(DMA_XOR, device->cap_mask))
-		return false;
-
-	#ifndef CONFIG_ASYNC_TX_DISABLE_XOR_VAL_DMA
-	if (!dma_has_cap(DMA_XOR_VAL, device->cap_mask))
-		return false;
-	#endif
-	#endif
-
-	#if IS_ENABLED(CONFIG_ASYNC_PQ)
-	if (!dma_has_cap(DMA_PQ, device->cap_mask))
-		return false;
-
-	#ifndef CONFIG_ASYNC_TX_DISABLE_PQ_VAL_DMA
-	if (!dma_has_cap(DMA_PQ_VAL, device->cap_mask))
-		return false;
-	#endif
-	#endif
-
-	return true;
-}
-
-static int get_dma_id(struct dma_device *device)
-{
-	int rc = ida_alloc(&dma_ida, GFP_KERNEL);
-
-	if (rc < 0)
-		return rc;
-	device->dev_id = rc;
-	return 0;
-}
-
-static int __dma_async_device_channel_register(struct dma_device *device,
-					       struct dma_chan *chan)
-{
-	int rc;
-
-	chan->local = alloc_percpu(typeof(*chan->local));
-	if (!chan->local)
-		return -ENOMEM;
-	chan->dev = kzalloc(sizeof(*chan->dev), GFP_KERNEL);
-	if (!chan->dev) {
-		rc = -ENOMEM;
-		goto err_free_local;
-	}
-
-	/*
-	 * When the chan_id is a negative value, we are dynamically adding
-	 * the channel. Otherwise we are static enumerating.
-	 */
-	chan->chan_id = ida_alloc(&device->chan_ida, GFP_KERNEL);
-	if (chan->chan_id < 0) {
-		pr_err("%s: unable to alloc ida for chan: %d\n",
-		       __func__, chan->chan_id);
-		rc = chan->chan_id;
-		goto err_free_dev;
-	}
-
-	chan->dev->device.class = &dma_devclass;
-	chan->dev->device.parent = device->dev;
-	chan->dev->chan = chan;
-	chan->dev->dev_id = device->dev_id;
-	dev_set_name(&chan->dev->device, "dma%dchan%d",
-		     device->dev_id, chan->chan_id);
-	rc = device_register(&chan->dev->device);
-	if (rc)
-		goto err_out_ida;
-	chan->client_count = 0;
-	device->chancnt++;
-
-	return 0;
-
- err_out_ida:
-	ida_free(&device->chan_ida, chan->chan_id);
- err_free_dev:
-	kfree(chan->dev);
- err_free_local:
-	free_percpu(chan->local);
-	chan->local = NULL;
-	return rc;
-}
-
-int dma_async_device_channel_register(struct dma_device *device,
-				      struct dma_chan *chan)
-{
-	int rc;
-
-	rc = __dma_async_device_channel_register(device, chan);
-	if (rc < 0)
-		return rc;
-
-	dma_channel_rebalance();
-	return 0;
-}
-EXPORT_SYMBOL_GPL(dma_async_device_channel_register);
-
-static void __dma_async_device_channel_unregister(struct dma_device *device,
-						  struct dma_chan *chan)
-{
-	WARN_ONCE(!device->device_release && chan->client_count,
-		  "%s called while %d clients hold a reference\n",
-		  __func__, chan->client_count);
-	mutex_lock(&dma_list_mutex);
-	device->chancnt--;
-	chan->dev->chan = NULL;
-	mutex_unlock(&dma_list_mutex);
-	ida_free(&device->chan_ida, chan->chan_id);
-	device_unregister(&chan->dev->device);
-	free_percpu(chan->local);
-}
-
-void dma_async_device_channel_unregister(struct dma_device *device,
-					 struct dma_chan *chan)
-{
-	__dma_async_device_channel_unregister(device, chan);
-	dma_channel_rebalance();
-}
-EXPORT_SYMBOL_GPL(dma_async_device_channel_unregister);
-
-/**
- * dma_async_device_register - registers DMA devices found
- * @device:	pointer to &struct dma_device
- *
- * After calling this routine the structure should not be freed except in the
- * device_release() callback which will be called after
- * dma_async_device_unregister() is called and no further references are taken.
- */
-int dma_async_device_register(struct dma_device *device)
-{
-	int rc;
-	struct dma_chan* chan;
-
-	if (!device)
-		return -ENODEV;
-
-	/* validate device routines */
-	if (!device->dev) {
-		pr_err("DMAdevice must have dev\n");
-		return -EIO;
-	}
-
-	device->owner = device->dev->driver->owner;
-
-	if (dma_has_cap(DMA_MEMCPY, device->cap_mask) && !device->device_prep_dma_memcpy) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_MEMCPY");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_XOR, device->cap_mask) && !device->device_prep_dma_xor) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_XOR");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_XOR_VAL, device->cap_mask) && !device->device_prep_dma_xor_val) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_XOR_VAL");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_PQ, device->cap_mask) && !device->device_prep_dma_pq) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_PQ");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_PQ_VAL, device->cap_mask) && !device->device_prep_dma_pq_val) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_PQ_VAL");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_MEMSET, device->cap_mask) && !device->device_prep_dma_memset) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_MEMSET");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_INTERRUPT, device->cap_mask) && !device->device_prep_dma_interrupt) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_INTERRUPT");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_CYCLIC, device->cap_mask) && !device->device_prep_dma_cyclic) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_CYCLIC");
-		return -EIO;
-	}
-
-	if (dma_has_cap(DMA_INTERLEAVE, device->cap_mask) && !device->device_prep_interleaved_dma) {
-		dev_err(device->dev,
-			"Device claims capability %s, but op is not defined\n",
-			"DMA_INTERLEAVE");
-		return -EIO;
-	}
-
-
-	if (!device->device_tx_status) {
-		dev_err(device->dev, "Device tx_status is not defined\n");
-		return -EIO;
-	}
-
-
-	if (!device->device_issue_pending) {
-		dev_err(device->dev, "Device issue_pending is not defined\n");
-		return -EIO;
-	}
-
-	if (!device->device_release)
-		dev_dbg(device->dev,
-			 "WARN: Device release is not defined so it is not safe to unbind this driver while in use\n");
-
-	kref_init(&device->ref);
-
-	/* note: this only matters in the
-	 * CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH=n case
-	 */
-	if (device_has_all_tx_types(device))
-		dma_cap_set(DMA_ASYNC_TX, device->cap_mask);
-
-	rc = get_dma_id(device);
-	if (rc != 0)
-		return rc;
-
-	ida_init(&device->chan_ida);
-
-	/* represent channels in sysfs. Probably want devs too */
-	list_for_each_entry(chan, &device->channels, device_node) {
-		rc = __dma_async_device_channel_register(device, chan);
-		if (rc < 0)
-			goto err_out;
-	}
-
-	mutex_lock(&dma_list_mutex);
-	/* take references on public channels */
-	if (dmaengine_ref_count && !dma_has_cap(DMA_PRIVATE, device->cap_mask))
-		list_for_each_entry(chan, &device->channels, device_node) {
-			/* if clients are already waiting for channels we need
-			 * to take references on their behalf
-			 */
-			if (dma_chan_get(chan) == -ENODEV) {
-				/* note we can only get here for the first
-				 * channel as the remaining channels are
-				 * guaranteed to get a reference
-				 */
-				rc = -ENODEV;
-				mutex_unlock(&dma_list_mutex);
-				goto err_out;
-			}
-		}
-	list_add_tail_rcu(&device->global_node, &dma_device_list);
-	if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
-		device->privatecnt++;	/* Always private */
-	dma_channel_rebalance();
-	mutex_unlock(&dma_list_mutex);
-
-	dmaengine_debug_register(device);
-
-	return 0;
-
-err_out:
-	/* if we never registered a channel just release the idr */
-	if (!device->chancnt) {
-		ida_free(&dma_ida, device->dev_id);
-		return rc;
-	}
-
-	list_for_each_entry(chan, &device->channels, device_node) {
-		if (chan->local == NULL)
-			continue;
-		mutex_lock(&dma_list_mutex);
-		chan->dev->chan = NULL;
-		mutex_unlock(&dma_list_mutex);
-		device_unregister(&chan->dev->device);
-		free_percpu(chan->local);
-	}
-	return rc;
-}
-EXPORT_SYMBOL(dma_async_device_register);
-
-/**
- * dma_async_device_unregister - unregister a DMA device
- * @device:	pointer to &struct dma_device
- *
- * This routine is called by dma driver exit routines, dmaengine holds module
- * references to prevent it being called while channels are in use.
- */
-void dma_async_device_unregister(struct dma_device *device)
-{
-	struct dma_chan *chan, *n;
-
-	dmaengine_debug_unregister(device);
-
-	list_for_each_entry_safe(chan, n, &device->channels, device_node)
-		__dma_async_device_channel_unregister(device, chan);
-
-	mutex_lock(&dma_list_mutex);
-	/*
-	 * setting DMA_PRIVATE ensures the device being torn down will not
-	 * be used in the channel_table
-	 */
-	dma_cap_set(DMA_PRIVATE, device->cap_mask);
-	dma_channel_rebalance();
-	ida_free(&dma_ida, device->dev_id);
-	dma_device_put(device);
-	mutex_unlock(&dma_list_mutex);
-}
-EXPORT_SYMBOL(dma_async_device_unregister);
-
-static void dmam_device_release(struct device *dev, void *res)
-{
-	struct dma_device *device;
-
-	device = *(struct dma_device **)res;
-	dma_async_device_unregister(device);
-}
-
-/**
- * dmaenginem_async_device_register - registers DMA devices found
- * @device:	pointer to &struct dma_device
- *
- * The operation is managed and will be undone on driver detach.
- */
-int dmaenginem_async_device_register(struct dma_device *device)
-{
-	void *p;
-	int ret;
-
-	p = devres_alloc(dmam_device_release, sizeof(void *), GFP_KERNEL);
-	if (!p)
-		return -ENOMEM;
-
-	ret = dma_async_device_register(device);
-	if (!ret) {
-		*(struct dma_device **)p = device;
-		devres_add(device->dev, p);
-	} else {
-		devres_free(p);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL(dmaenginem_async_device_register);
-
-struct dmaengine_unmap_pool {
-	struct kmem_cache *cache;
-	const char *name;
-	mempool_t *pool;
-	size_t size;
-};
-
-#define __UNMAP_POOL(x) { .size = x, .name = "dmaengine-unmap-" __stringify(x) }
-static struct dmaengine_unmap_pool unmap_pool[] = {
-	__UNMAP_POOL(2),
-	#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID)
-	__UNMAP_POOL(16),
-	__UNMAP_POOL(128),
-	__UNMAP_POOL(256),
-	#endif
-};
-
-static struct dmaengine_unmap_pool *__get_unmap_pool(int nr)
-{
-	int order = get_count_order(nr);
-
-	switch (order) {
-	case 0 ... 1:
-		return &unmap_pool[0];
-#if IS_ENABLED(CONFIG_DMA_ENGINE_RAID)
-	case 2 ... 4:
-		return &unmap_pool[1];
-	case 5 ... 7:
-		return &unmap_pool[2];
-	case 8:
-		return &unmap_pool[3];
-#endif
-	default:
-		BUG();
-		return NULL;
-	}
-}
-
-static void dmaengine_unmap(struct kref *kref)
-{
-	struct dmaengine_unmap_data *unmap = container_of(kref, typeof(*unmap), kref);
-	struct device *dev = unmap->dev;
-	int cnt, i;
-
-	cnt = unmap->to_cnt;
-	for (i = 0; i < cnt; i++)
-		dma_unmap_page(dev, unmap->addr[i], unmap->len,
-			       DMA_TO_DEVICE);
-	cnt += unmap->from_cnt;
-	for (; i < cnt; i++)
-		dma_unmap_page(dev, unmap->addr[i], unmap->len,
-			       DMA_FROM_DEVICE);
-	cnt += unmap->bidi_cnt;
-	for (; i < cnt; i++) {
-		if (unmap->addr[i] == 0)
-			continue;
-		dma_unmap_page(dev, unmap->addr[i], unmap->len,
-			       DMA_BIDIRECTIONAL);
-	}
-	cnt = unmap->map_cnt;
-	mempool_free(unmap, __get_unmap_pool(cnt)->pool);
-}
-
-void dmaengine_unmap_put(struct dmaengine_unmap_data *unmap)
-{
-	if (unmap)
-		kref_put(&unmap->kref, dmaengine_unmap);
-}
-EXPORT_SYMBOL_GPL(dmaengine_unmap_put);
-
-static void dmaengine_destroy_unmap_pool(void)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(unmap_pool); i++) {
-		struct dmaengine_unmap_pool *p = &unmap_pool[i];
-
-		mempool_destroy(p->pool);
-		p->pool = NULL;
-		kmem_cache_destroy(p->cache);
-		p->cache = NULL;
-	}
-}
-
-static int __init dmaengine_init_unmap_pool(void)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(unmap_pool); i++) {
-		struct dmaengine_unmap_pool *p = &unmap_pool[i];
-		size_t size;
-
-		size = sizeof(struct dmaengine_unmap_data) +
-		       sizeof(dma_addr_t) * p->size;
-
-		p->cache = kmem_cache_create(p->name, size, 0,
-					     SLAB_HWCACHE_ALIGN, NULL);
-		if (!p->cache)
-			break;
-		p->pool = mempool_create_slab_pool(1, p->cache);
-		if (!p->pool)
-			break;
-	}
-
-	if (i == ARRAY_SIZE(unmap_pool))
-		return 0;
-
-	dmaengine_destroy_unmap_pool();
-	return -ENOMEM;
-}
-
-struct dmaengine_unmap_data *
-dmaengine_get_unmap_data(struct device *dev, int nr, gfp_t flags)
-{
-	struct dmaengine_unmap_data *unmap;
-
-	unmap = mempool_alloc(__get_unmap_pool(nr)->pool, flags);
-	if (!unmap)
-		return NULL;
-
-	memset(unmap, 0, sizeof(*unmap));
-	kref_init(&unmap->kref);
-	unmap->dev = dev;
-	unmap->map_cnt = nr;
-
-	return unmap;
-}
-EXPORT_SYMBOL(dmaengine_get_unmap_data);
-
-void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
-	struct dma_chan *chan)
-{
-	tx->chan = chan;
-	#ifdef CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH
-	spin_lock_init(&tx->lock);
-	#endif
-}
-EXPORT_SYMBOL(dma_async_tx_descriptor_init);
-
-static inline int desc_check_and_set_metadata_mode(
-	struct dma_async_tx_descriptor *desc, enum dma_desc_metadata_mode mode)
-{
-	/* Make sure that the metadata mode is not mixed */
-	if (!desc->desc_metadata_mode) {
-		if (dmaengine_is_metadata_mode_supported(desc->chan, mode))
-			desc->desc_metadata_mode = mode;
-		else
-			return -ENOTSUPP;
-	} else if (desc->desc_metadata_mode != mode) {
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-int dmaengine_desc_attach_metadata(struct dma_async_tx_descriptor *desc,
-				   void *data, size_t len)
-{
-	int ret;
-
-	if (!desc)
-		return -EINVAL;
-
-	ret = desc_check_and_set_metadata_mode(desc, DESC_METADATA_CLIENT);
-	if (ret)
-		return ret;
-
-	if (!desc->metadata_ops || !desc->metadata_ops->attach)
-		return -ENOTSUPP;
-
-	return desc->metadata_ops->attach(desc, data, len);
-}
-EXPORT_SYMBOL_GPL(dmaengine_desc_attach_metadata);
-
-void *dmaengine_desc_get_metadata_ptr(struct dma_async_tx_descriptor *desc,
-				      size_t *payload_len, size_t *max_len)
-{
-	int ret;
-
-	if (!desc)
-		return ERR_PTR(-EINVAL);
-
-	ret = desc_check_and_set_metadata_mode(desc, DESC_METADATA_ENGINE);
-	if (ret)
-		return ERR_PTR(ret);
-
-	if (!desc->metadata_ops || !desc->metadata_ops->get_ptr)
-		return ERR_PTR(-ENOTSUPP);
-
-	return desc->metadata_ops->get_ptr(desc, payload_len, max_len);
-}
-EXPORT_SYMBOL_GPL(dmaengine_desc_get_metadata_ptr);
-
-int dmaengine_desc_set_metadata_len(struct dma_async_tx_descriptor *desc,
-				    size_t payload_len)
-{
-	int ret;
-
-	if (!desc)
-		return -EINVAL;
-
-	ret = desc_check_and_set_metadata_mode(desc, DESC_METADATA_ENGINE);
-	if (ret)
-		return ret;
-
-	if (!desc->metadata_ops || !desc->metadata_ops->set_len)
-		return -ENOTSUPP;
-
-	return desc->metadata_ops->set_len(desc, payload_len);
-}
-EXPORT_SYMBOL_GPL(dmaengine_desc_set_metadata_len);
-
-/**
- * dma_wait_for_async_tx - spin wait for a transaction to complete
- * @tx:		in-flight transaction to wait on
- */
-enum dma_status
-dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
-{
-	unsigned long dma_sync_wait_timeout = jiffies + msecs_to_jiffies(5000);
-
-	if (!tx)
-		return DMA_COMPLETE;
-
-	while (tx->cookie == -EBUSY) {
-		if (time_after_eq(jiffies, dma_sync_wait_timeout)) {
-			dev_err(tx->chan->device->dev,
-				"%s timeout waiting for descriptor submission\n",
-				__func__);
-			return DMA_ERROR;
-		}
-		cpu_relax();
-	}
-	return dma_sync_wait(tx->chan, tx->cookie);
-}
-EXPORT_SYMBOL_GPL(dma_wait_for_async_tx);
-
-/**
- * dma_run_dependencies - process dependent operations on the target channel
- * @tx:		transaction with dependencies
- *
- * Helper routine for DMA drivers to process (start) dependent operations
- * on their target channel.
- */
-void dma_run_dependencies(struct dma_async_tx_descriptor *tx)
-{
-	struct dma_async_tx_descriptor *dep = txd_next(tx);
-	struct dma_async_tx_descriptor *dep_next;
-	struct dma_chan *chan;
-
-	if (!dep)
-		return;
-
-	/* we'll submit tx->next now, so clear the link */
-	txd_clear_next(tx);
-	chan = dep->chan;
-
-	/* keep submitting up until a channel switch is detected
-	 * in that case we will be called again as a result of
-	 * processing the interrupt from async_tx_channel_switch
-	 */
-	for (; dep; dep = dep_next) {
-		txd_lock(dep);
-		txd_clear_parent(dep);
-		dep_next = txd_next(dep);
-		if (dep_next && dep_next->chan == chan)
-			txd_clear_next(dep); /* ->next will be submitted */
-		else
-			dep_next = NULL; /* submit current dep and terminate */
-		txd_unlock(dep);
-
-		dep->tx_submit(dep);
-	}
-
-	chan->device->device_issue_pending(chan);
-}
-EXPORT_SYMBOL_GPL(dma_run_dependencies);
-
-static int __init dma_bus_init(void)
-{
-	int err = dmaengine_init_unmap_pool();
-
-	if (err)
-		return err;
-
-	err = class_register(&dma_devclass);
-	if (!err)
-		dmaengine_debugfs_init();
-
-	return err;
-}
-arch_initcall(dma_bus_init);
diff --git a/snd-alpx/core/generic/6.2/dmaengine.h b/snd-alpx/core/generic/6.2/dmaengine.h
deleted file mode 100644
index 53f16d3..0000000
--- a/snd-alpx/core/generic/6.2/dmaengine.h
+++ /dev/null
@@ -1,201 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * The contents of this file are private to DMA engine drivers, and is not
- * part of the API to be used by DMA engine users.
- */
-#ifndef DMAENGINE_H
-#define DMAENGINE_H
-
-#include <linux/bug.h>
-#include <linux/dmaengine.h>
-
-/**
- * dma_cookie_init - initialize the cookies for a DMA channel
- * @chan: dma channel to initialize
- */
-static inline void dma_cookie_init(struct dma_chan *chan)
-{
-	chan->cookie = DMA_MIN_COOKIE;
-	chan->completed_cookie = DMA_MIN_COOKIE;
-}
-
-/**
- * dma_cookie_assign - assign a DMA engine cookie to the descriptor
- * @tx: descriptor needing cookie
- *
- * Assign a unique non-zero per-channel cookie to the descriptor.
- * Note: caller is expected to hold a lock to prevent concurrency.
- */
-static inline dma_cookie_t dma_cookie_assign(struct dma_async_tx_descriptor *tx)
-{
-	struct dma_chan *chan = tx->chan;
-	dma_cookie_t cookie;
-
-	cookie = chan->cookie + 1;
-	if (cookie < DMA_MIN_COOKIE)
-		cookie = DMA_MIN_COOKIE;
-	tx->cookie = chan->cookie = cookie;
-
-	return cookie;
-}
-
-/**
- * dma_cookie_complete - complete a descriptor
- * @tx: descriptor to complete
- *
- * Mark this descriptor complete by updating the channels completed
- * cookie marker.  Zero the descriptors cookie to prevent accidental
- * repeated completions.
- *
- * Note: caller is expected to hold a lock to prevent concurrency.
- */
-static inline void dma_cookie_complete(struct dma_async_tx_descriptor *tx)
-{
-	BUG_ON(tx->cookie < DMA_MIN_COOKIE);
-	tx->chan->completed_cookie = tx->cookie;
-	tx->cookie = 0;
-}
-
-/**
- * dma_cookie_status - report cookie status
- * @chan: dma channel
- * @cookie: cookie we are interested in
- * @state: dma_tx_state structure to return last/used cookies
- *
- * Report the status of the cookie, filling in the state structure if
- * non-NULL.  No locking is required.
- */
-static inline enum dma_status dma_cookie_status(struct dma_chan *chan,
-	dma_cookie_t cookie, struct dma_tx_state *state)
-{
-	dma_cookie_t used, complete;
-
-	used = chan->cookie;
-	complete = chan->completed_cookie;
-	barrier();
-	if (state) {
-		state->last = complete;
-		state->used = used;
-		state->residue = 0;
-		state->in_flight_bytes = 0;
-	}
-	return dma_async_is_complete(cookie, complete, used);
-}
-
-static inline void dma_set_residue(struct dma_tx_state *state, u32 residue)
-{
-	if (state)
-		state->residue = residue;
-}
-
-static inline void dma_set_in_flight_bytes(struct dma_tx_state *state,
-					   u32 in_flight_bytes)
-{
-	if (state)
-		state->in_flight_bytes = in_flight_bytes;
-}
-
-struct dmaengine_desc_callback {
-	dma_async_tx_callback callback;
-	dma_async_tx_callback_result callback_result;
-	void *callback_param;
-};
-
-/**
- * dmaengine_desc_get_callback - get the passed in callback function
- * @tx: tx descriptor
- * @cb: temp struct to hold the callback info
- *
- * Fill the passed in cb struct with what's available in the passed in
- * tx descriptor struct
- * No locking is required.
- */
-static inline void
-dmaengine_desc_get_callback(struct dma_async_tx_descriptor *tx,
-			    struct dmaengine_desc_callback *cb)
-{
-	cb->callback = tx->callback;
-	cb->callback_result = tx->callback_result;
-	cb->callback_param = tx->callback_param;
-}
-
-/**
- * dmaengine_desc_callback_invoke - call the callback function in cb struct
- * @cb: temp struct that is holding the callback info
- * @result: transaction result
- *
- * Call the callback function provided in the cb struct with the parameter
- * in the cb struct.
- * Locking is dependent on the driver.
- */
-static inline void
-dmaengine_desc_callback_invoke(struct dmaengine_desc_callback *cb,
-			       const struct dmaengine_result *result)
-{
-	struct dmaengine_result dummy_result = {
-		.result = DMA_TRANS_NOERROR,
-		.residue = 0
-	};
-
-	if (cb->callback_result) {
-		if (!result)
-			result = &dummy_result;
-		cb->callback_result(cb->callback_param, result);
-	} else if (cb->callback) {
-		cb->callback(cb->callback_param);
-	}
-}
-
-/**
- * dmaengine_desc_get_callback_invoke - get the callback in tx descriptor and
- * 					then immediately call the callback.
- * @tx: dma async tx descriptor
- * @result: transaction result
- *
- * Call dmaengine_desc_get_callback() and dmaengine_desc_callback_invoke()
- * in a single function since no work is necessary in between for the driver.
- * Locking is dependent on the driver.
- */
-static inline void
-dmaengine_desc_get_callback_invoke(struct dma_async_tx_descriptor *tx,
-				   const struct dmaengine_result *result)
-{
-	struct dmaengine_desc_callback cb;
-
-	dmaengine_desc_get_callback(tx, &cb);
-	dmaengine_desc_callback_invoke(&cb, result);
-}
-
-/**
- * dmaengine_desc_callback_valid - verify the callback is valid in cb
- * @cb: callback info struct
- *
- * Return a bool that verifies whether callback in cb is valid or not.
- * No locking is required.
- */
-static inline bool
-dmaengine_desc_callback_valid(struct dmaengine_desc_callback *cb)
-{
-	return cb->callback || cb->callback_result;
-}
-
-struct dma_chan *dma_get_slave_channel(struct dma_chan *chan);
-struct dma_chan *dma_get_any_slave_channel(struct dma_device *device);
-
-#ifdef CONFIG_DEBUG_FS
-#include <linux/debugfs.h>
-
-static inline struct dentry *
-dmaengine_get_debugfs_root(struct dma_device *dma_dev) {
-	return dma_dev->dbg_dev_root;
-}
-#else
-struct dentry;
-static inline struct dentry *
-dmaengine_get_debugfs_root(struct dma_device *dma_dev)
-{
-	return NULL;
-}
-#endif /* CONFIG_DEBUG_FS */
-
-#endif
diff --git a/snd-alpx/core/generic/6.2/virt-dma.c b/snd-alpx/core/generic/6.2/virt-dma.c
deleted file mode 100644
index a6f4265..0000000
--- a/snd-alpx/core/generic/6.2/virt-dma.c
+++ /dev/null
@@ -1,142 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Virtual DMA channel support for DMAengine
- *
- * Copyright (C) 2012 Russell King
- */
-#include <linux/device.h>
-#include <linux/dmaengine.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-
-#include "virt-dma.h"
-
-static struct virt_dma_desc *to_virt_desc(struct dma_async_tx_descriptor *tx)
-{
-	return container_of(tx, struct virt_dma_desc, tx);
-}
-
-dma_cookie_t vchan_tx_submit(struct dma_async_tx_descriptor *tx)
-{
-	struct virt_dma_chan *vc = to_virt_chan(tx->chan);
-	struct virt_dma_desc *vd = to_virt_desc(tx);
-	unsigned long flags;
-	dma_cookie_t cookie;
-
-	spin_lock_irqsave(&vc->lock, flags);
-	cookie = dma_cookie_assign(tx);
-
-	list_move_tail(&vd->node, &vc->desc_submitted);
-	spin_unlock_irqrestore(&vc->lock, flags);
-
-	dev_dbg(vc->chan.device->dev, "vchan %p: txd %p[%x]: submitted\n",
-		vc, vd, cookie);
-
-	return cookie;
-}
-EXPORT_SYMBOL_GPL(vchan_tx_submit);
-
-/**
- * vchan_tx_desc_free - free a reusable descriptor
- * @tx: the transfer
- *
- * This function frees a previously allocated reusable descriptor. The only
- * other way is to clear the DMA_CTRL_REUSE flag and submit one last time the
- * transfer.
- *
- * Returns 0 upon success
- */
-int vchan_tx_desc_free(struct dma_async_tx_descriptor *tx)
-{
-	struct virt_dma_chan *vc = to_virt_chan(tx->chan);
-	struct virt_dma_desc *vd = to_virt_desc(tx);
-	unsigned long flags;
-
-	spin_lock_irqsave(&vc->lock, flags);
-	list_del(&vd->node);
-	spin_unlock_irqrestore(&vc->lock, flags);
-
-	dev_dbg(vc->chan.device->dev, "vchan %p: txd %p[%x]: freeing\n",
-		vc, vd, vd->tx.cookie);
-	vc->desc_free(vd);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(vchan_tx_desc_free);
-
-struct virt_dma_desc *vchan_find_desc(struct virt_dma_chan *vc,
-	dma_cookie_t cookie)
-{
-	struct virt_dma_desc *vd;
-
-	list_for_each_entry(vd, &vc->desc_issued, node)
-		if (vd->tx.cookie == cookie)
-			return vd;
-
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(vchan_find_desc);
-
-/*
- * This tasklet handles the completion of a DMA descriptor by
- * calling its callback and freeing it.
- */
-static void vchan_complete(struct tasklet_struct *t)
-{
-	struct virt_dma_chan *vc = from_tasklet(vc, t, task);
-	struct virt_dma_desc *vd, *_vd;
-	struct dmaengine_desc_callback cb;
-	LIST_HEAD(head);
-
-	spin_lock_irq(&vc->lock);
-	list_splice_tail_init(&vc->desc_completed, &head);
-	vd = vc->cyclic;
-	if (vd) {
-		vc->cyclic = NULL;
-		dmaengine_desc_get_callback(&vd->tx, &cb);
-	} else {
-		memset(&cb, 0, sizeof(cb));
-	}
-	spin_unlock_irq(&vc->lock);
-
-	dmaengine_desc_callback_invoke(&cb, &vd->tx_result);
-
-	list_for_each_entry_safe(vd, _vd, &head, node) {
-		dmaengine_desc_get_callback(&vd->tx, &cb);
-
-		list_del(&vd->node);
-		dmaengine_desc_callback_invoke(&cb, &vd->tx_result);
-		vchan_vdesc_fini(vd);
-	}
-}
-
-void vchan_dma_desc_free_list(struct virt_dma_chan *vc, struct list_head *head)
-{
-	struct virt_dma_desc *vd, *_vd;
-
-	list_for_each_entry_safe(vd, _vd, head, node) {
-		list_del(&vd->node);
-		vchan_vdesc_fini(vd);
-	}
-}
-EXPORT_SYMBOL_GPL(vchan_dma_desc_free_list);
-
-void vchan_init(struct virt_dma_chan *vc, struct dma_device *dmadev)
-{
-	dma_cookie_init(&vc->chan);
-
-	spin_lock_init(&vc->lock);
-	INIT_LIST_HEAD(&vc->desc_allocated);
-	INIT_LIST_HEAD(&vc->desc_submitted);
-	INIT_LIST_HEAD(&vc->desc_issued);
-	INIT_LIST_HEAD(&vc->desc_completed);
-	INIT_LIST_HEAD(&vc->desc_terminated);
-
-	tasklet_setup(&vc->task, vchan_complete);
-
-	vc->chan.device = dmadev;
-	list_add_tail(&vc->chan.device_node, &dmadev->channels);
-}
-EXPORT_SYMBOL_GPL(vchan_init);
-
-MODULE_AUTHOR("Russell King");
-MODULE_LICENSE("GPL");
diff --git a/snd-alpx/core/generic/6.2/virt-dma.h b/snd-alpx/core/generic/6.2/virt-dma.h
deleted file mode 100644
index e9f5250..0000000
--- a/snd-alpx/core/generic/6.2/virt-dma.h
+++ /dev/null
@@ -1,227 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Virtual DMA channel support for DMAengine
- *
- * Copyright (C) 2012 Russell King
- */
-#ifndef VIRT_DMA_H
-#define VIRT_DMA_H
-
-#include <linux/dmaengine.h>
-#include <linux/interrupt.h>
-
-#include "dmaengine.h"
-
-struct virt_dma_desc {
-	struct dma_async_tx_descriptor tx;
-	struct dmaengine_result tx_result;
-	/* protected by vc.lock */
-	struct list_head node;
-};
-
-struct virt_dma_chan {
-	struct dma_chan	chan;
-	struct tasklet_struct task;
-	void (*desc_free)(struct virt_dma_desc *);
-
-	spinlock_t lock;
-
-	/* protected by vc.lock */
-	struct list_head desc_allocated;
-	struct list_head desc_submitted;
-	struct list_head desc_issued;
-	struct list_head desc_completed;
-	struct list_head desc_terminated;
-
-	struct virt_dma_desc *cyclic;
-};
-
-static inline struct virt_dma_chan *to_virt_chan(struct dma_chan *chan)
-{
-	return container_of(chan, struct virt_dma_chan, chan);
-}
-
-void vchan_dma_desc_free_list(struct virt_dma_chan *vc, struct list_head *head);
-void vchan_init(struct virt_dma_chan *vc, struct dma_device *dmadev);
-struct virt_dma_desc *vchan_find_desc(struct virt_dma_chan *, dma_cookie_t);
-extern dma_cookie_t vchan_tx_submit(struct dma_async_tx_descriptor *);
-extern int vchan_tx_desc_free(struct dma_async_tx_descriptor *);
-
-/**
- * vchan_tx_prep - prepare a descriptor
- * @vc: virtual channel allocating this descriptor
- * @vd: virtual descriptor to prepare
- * @tx_flags: flags argument passed in to prepare function
- */
-static inline struct dma_async_tx_descriptor *vchan_tx_prep(struct virt_dma_chan *vc,
-	struct virt_dma_desc *vd, unsigned long tx_flags)
-{
-	unsigned long flags;
-
-	dma_async_tx_descriptor_init(&vd->tx, &vc->chan);
-	vd->tx.flags = tx_flags;
-	vd->tx.tx_submit = vchan_tx_submit;
-	vd->tx.desc_free = vchan_tx_desc_free;
-
-	vd->tx_result.result = DMA_TRANS_NOERROR;
-	vd->tx_result.residue = 0;
-
-	spin_lock_irqsave(&vc->lock, flags);
-	list_add_tail(&vd->node, &vc->desc_allocated);
-	spin_unlock_irqrestore(&vc->lock, flags);
-
-	return &vd->tx;
-}
-
-/**
- * vchan_issue_pending - move submitted descriptors to issued list
- * @vc: virtual channel to update
- *
- * vc.lock must be held by caller
- */
-static inline bool vchan_issue_pending(struct virt_dma_chan *vc)
-{
-	list_splice_tail_init(&vc->desc_submitted, &vc->desc_issued);
-	return !list_empty(&vc->desc_issued);
-}
-
-/**
- * vchan_cookie_complete - report completion of a descriptor
- * @vd: virtual descriptor to update
- *
- * vc.lock must be held by caller
- */
-static inline void vchan_cookie_complete(struct virt_dma_desc *vd)
-{
-	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
-	dma_cookie_t cookie;
-
-	cookie = vd->tx.cookie;
-	dma_cookie_complete(&vd->tx);
-	dev_vdbg(vc->chan.device->dev, "txd %p[%x]: marked complete\n",
-		 vd, cookie);
-	list_add_tail(&vd->node, &vc->desc_completed);
-
-	tasklet_schedule(&vc->task);
-}
-
-/**
- * vchan_vdesc_fini - Free or reuse a descriptor
- * @vd: virtual descriptor to free/reuse
- */
-static inline void vchan_vdesc_fini(struct virt_dma_desc *vd)
-{
-	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
-
-	if (dmaengine_desc_test_reuse(&vd->tx)) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&vc->lock, flags);
-		list_add(&vd->node, &vc->desc_allocated);
-		spin_unlock_irqrestore(&vc->lock, flags);
-	} else {
-		vc->desc_free(vd);
-	}
-}
-
-/**
- * vchan_cyclic_callback - report the completion of a period
- * @vd: virtual descriptor
- */
-static inline void vchan_cyclic_callback(struct virt_dma_desc *vd)
-{
-	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
-
-	vc->cyclic = vd;
-	tasklet_schedule(&vc->task);
-}
-
-/**
- * vchan_terminate_vdesc - Disable pending cyclic callback
- * @vd: virtual descriptor to be terminated
- *
- * vc.lock must be held by caller
- */
-static inline void vchan_terminate_vdesc(struct virt_dma_desc *vd)
-{
-	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
-
-	list_add_tail(&vd->node, &vc->desc_terminated);
-
-	if (vc->cyclic == vd)
-		vc->cyclic = NULL;
-}
-
-/**
- * vchan_next_desc - peek at the next descriptor to be processed
- * @vc: virtual channel to obtain descriptor from
- *
- * vc.lock must be held by caller
- */
-static inline struct virt_dma_desc *vchan_next_desc(struct virt_dma_chan *vc)
-{
-	return list_first_entry_or_null(&vc->desc_issued,
-					struct virt_dma_desc, node);
-}
-
-/**
- * vchan_get_all_descriptors - obtain all submitted and issued descriptors
- * @vc: virtual channel to get descriptors from
- * @head: list of descriptors found
- *
- * vc.lock must be held by caller
- *
- * Removes all submitted and issued descriptors from internal lists, and
- * provides a list of all descriptors found
- */
-static inline void vchan_get_all_descriptors(struct virt_dma_chan *vc,
-	struct list_head *head)
-{
-	list_splice_tail_init(&vc->desc_allocated, head);
-	list_splice_tail_init(&vc->desc_submitted, head);
-	list_splice_tail_init(&vc->desc_issued, head);
-	list_splice_tail_init(&vc->desc_completed, head);
-	list_splice_tail_init(&vc->desc_terminated, head);
-}
-
-static inline void vchan_free_chan_resources(struct virt_dma_chan *vc)
-{
-	struct virt_dma_desc *vd;
-	unsigned long flags;
-	LIST_HEAD(head);
-
-	spin_lock_irqsave(&vc->lock, flags);
-	vchan_get_all_descriptors(vc, &head);
-	list_for_each_entry(vd, &head, node)
-		dmaengine_desc_clear_reuse(&vd->tx);
-	spin_unlock_irqrestore(&vc->lock, flags);
-
-	vchan_dma_desc_free_list(vc, &head);
-}
-
-/**
- * vchan_synchronize() - synchronize callback execution to the current context
- * @vc: virtual channel to synchronize
- *
- * Makes sure that all scheduled or active callbacks have finished running. For
- * proper operation the caller has to ensure that no new callbacks are scheduled
- * after the invocation of this function started.
- * Free up the terminated cyclic descriptor to prevent memory leakage.
- */
-static inline void vchan_synchronize(struct virt_dma_chan *vc)
-{
-	LIST_HEAD(head);
-	unsigned long flags;
-
-	tasklet_kill(&vc->task);
-
-	spin_lock_irqsave(&vc->lock, flags);
-
-	list_splice_tail_init(&vc->desc_terminated, &head);
-
-	spin_unlock_irqrestore(&vc->lock, flags);
-
-	vchan_dma_desc_free_list(vc, &head);
-}
-
-#endif
diff --git a/snd-alpx/core/generic/6.2/xilinx/xdma-regs.h b/snd-alpx/core/generic/6.2/xilinx/xdma-regs.h
deleted file mode 100644
index 4ee96de..0000000
--- a/snd-alpx/core/generic/6.2/xilinx/xdma-regs.h
+++ /dev/null
@@ -1,169 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2017-2020 Xilinx, Inc. All rights reserved.
- * Copyright (C) 2022, Advanced Micro Devices, Inc.
- */
-
-#ifndef __DMA_XDMA_REGS_H
-#define __DMA_XDMA_REGS_H
-
-/* The length of register space exposed to host */
-#define XDMA_REG_SPACE_LEN	65536
-
-/*
- * maximum number of DMA channels for each direction:
- * Host to Card (H2C) or Card to Host (C2H)
- */
-#define XDMA_MAX_CHANNELS	4
-
-/*
- * macros to define the number of descriptor blocks can be used in one
- * DMA transfer request.
- * the DMA engine uses a linked list of descriptor blocks that specify the
- * source, destination, and length of the DMA transfers.
- */
-#define XDMA_DESC_BLOCK_NUM		BIT(7)
-#define XDMA_DESC_BLOCK_MASK		(XDMA_DESC_BLOCK_NUM - 1)
-
-/* descriptor definitions */
-#define XDMA_DESC_ADJACENT		32
-#define XDMA_DESC_ADJACENT_MASK		(XDMA_DESC_ADJACENT - 1)
-#define XDMA_DESC_ADJACENT_BITS		GENMASK(13, 8)
-#define XDMA_DESC_MAGIC			0xad4bUL
-#define XDMA_DESC_MAGIC_BITS		GENMASK(31, 16)
-#define XDMA_DESC_FLAGS_BITS		GENMASK(7, 0)
-#define XDMA_DESC_STOPPED		BIT(0)
-#define XDMA_DESC_COMPLETED		BIT(1)
-#define XDMA_DESC_BLEN_BITS		28
-#define XDMA_DESC_BLEN_MAX		(BIT(XDMA_DESC_BLEN_BITS) - PAGE_SIZE)
-
-/* macros to construct the descriptor control word */
-#define XDMA_DESC_CONTROL(adjacent, flag)				\
-	(FIELD_PREP(XDMA_DESC_MAGIC_BITS, XDMA_DESC_MAGIC) |		\
-	 FIELD_PREP(XDMA_DESC_ADJACENT_BITS, (adjacent) - 1) |		\
-	 FIELD_PREP(XDMA_DESC_FLAGS_BITS, (flag)))
-#define XDMA_DESC_CONTROL_LAST						\
-	XDMA_DESC_CONTROL(1, XDMA_DESC_STOPPED | XDMA_DESC_COMPLETED)
-#define XDMA_DESC_CONTROL_CYCLIC					\
-	XDMA_DESC_CONTROL(1, XDMA_DESC_COMPLETED)
-
-/*
- * Descriptor for a single contiguous memory block transfer.
- *
- * Multiple descriptors are linked by means of the next pointer. An additional
- * extra adjacent number gives the amount of extra contiguous descriptors.
- *
- * The descriptors are in root complex memory, and the bytes in the 32-bit
- * words must be in little-endian byte ordering.
- */
-struct xdma_hw_desc {
-	__le32		control;
-	__le32		bytes;
-	__le64		src_addr;
-	__le64		dst_addr;
-	__le64		next_desc;
-};
-
-#define XDMA_DESC_SIZE			sizeof(struct xdma_hw_desc)
-#define XDMA_DESC_BLOCK_SIZE		(XDMA_DESC_SIZE * XDMA_DESC_ADJACENT)
-#define XDMA_DESC_BLOCK_ALIGN		32
-#define XDMA_DESC_BLOCK_BOUNDARY	4096
-
-/*
- * Channel registers
- */
-#define XDMA_CHAN_IDENTIFIER		0x0
-#define XDMA_CHAN_CONTROL		0x4
-#define XDMA_CHAN_CONTROL_W1S		0x8
-#define XDMA_CHAN_CONTROL_W1C		0xc
-#define XDMA_CHAN_STATUS		0x40
-#define XDMA_CHAN_STATUS_RC		0x44
-#define XDMA_CHAN_COMPLETED_DESC	0x48
-#define XDMA_CHAN_ALIGNMENTS		0x4c
-#define XDMA_CHAN_INTR_ENABLE		0x90
-#define XDMA_CHAN_INTR_ENABLE_W1S	0x94
-#define XDMA_CHAN_INTR_ENABLE_W1C	0x9c
-
-#define XDMA_CHAN_STRIDE	0x100
-#define XDMA_CHAN_H2C_OFFSET	0x0
-#define XDMA_CHAN_C2H_OFFSET	0x1000
-#define XDMA_CHAN_H2C_TARGET	0x0
-#define XDMA_CHAN_C2H_TARGET	0x1
-
-/* macro to check if channel is available */
-#define XDMA_CHAN_MAGIC		0x1fc0
-#define XDMA_CHAN_CHECK_TARGET(id, target)		\
-	(((u32)(id) >> 16) == XDMA_CHAN_MAGIC + (target))
-
-/* bits of the channel control register */
-#define CHAN_CTRL_RUN_STOP			BIT(0)
-#define CHAN_CTRL_IE_DESC_STOPPED		BIT(1)
-#define CHAN_CTRL_IE_DESC_COMPLETED		BIT(2)
-#define CHAN_CTRL_IE_DESC_ALIGN_MISMATCH	BIT(3)
-#define CHAN_CTRL_IE_MAGIC_STOPPED		BIT(4)
-#define CHAN_CTRL_IE_IDLE_STOPPED		BIT(6)
-#define CHAN_CTRL_IE_READ_ERROR			GENMASK(13, 9)
-#define CHAN_CTRL_IE_WRITE_ERROR		GENMASK(18, 14)
-#define CHAN_CTRL_IE_DESC_ERROR			GENMASK(23, 19)
-#define CHAN_CTRL_NON_INCR_ADDR			BIT(25)
-#define CHAN_CTRL_POLL_MODE_WB			BIT(26)
-#define CHAN_CTRL_TRANSFER_INFO_WB			BIT(27)
-
-#define CHAN_CTRL_START	(CHAN_CTRL_RUN_STOP |				\
-			 CHAN_CTRL_IE_DESC_STOPPED |			\
-			 CHAN_CTRL_IE_DESC_COMPLETED |			\
-			 CHAN_CTRL_IE_DESC_ALIGN_MISMATCH |		\
-			 CHAN_CTRL_IE_MAGIC_STOPPED |			\
-			 CHAN_CTRL_IE_READ_ERROR |			\
-			 CHAN_CTRL_IE_WRITE_ERROR |			\
-			 CHAN_CTRL_IE_DESC_ERROR)
-
-#define XDMA_CHAN_STATUS_MASK CHAN_CTRL_START
-
-#define XDMA_CHAN_ERROR_MASK (CHAN_CTRL_IE_DESC_ALIGN_MISMATCH |	\
-			      CHAN_CTRL_IE_MAGIC_STOPPED |		\
-			      CHAN_CTRL_IE_READ_ERROR |			\
-			      CHAN_CTRL_IE_WRITE_ERROR |		\
-			      CHAN_CTRL_IE_DESC_ERROR)
-
-/* bits of the channel interrupt enable mask */
-#define CHAN_IM_DESC_ERROR			BIT(19)
-#define CHAN_IM_READ_ERROR			BIT(9)
-#define CHAN_IM_IDLE_STOPPED			BIT(6)
-#define CHAN_IM_MAGIC_STOPPED			BIT(4)
-#define CHAN_IM_DESC_COMPLETED			BIT(2)
-#define CHAN_IM_DESC_STOPPED			BIT(1)
-
-#define CHAN_IM_ALL	(CHAN_IM_DESC_ERROR | CHAN_IM_READ_ERROR |	\
-			 CHAN_IM_IDLE_STOPPED | CHAN_IM_MAGIC_STOPPED | \
-			 CHAN_IM_DESC_COMPLETED | CHAN_IM_DESC_STOPPED)
-
-/*
- * Channel SGDMA registers
- */
-#define XDMA_SGDMA_IDENTIFIER	0x4000
-#define XDMA_SGDMA_DESC_LO	0x4080
-#define XDMA_SGDMA_DESC_HI	0x4084
-#define XDMA_SGDMA_DESC_ADJ	0x4088
-#define XDMA_SGDMA_DESC_CREDIT	0x408c
-
-/*
- * interrupt registers
- */
-#define XDMA_IRQ_IDENTIFIER		0x2000
-#define XDMA_IRQ_USER_INT_EN		0x2004
-#define XDMA_IRQ_USER_INT_EN_W1S	0x2008
-#define XDMA_IRQ_USER_INT_EN_W1C	0x200c
-#define XDMA_IRQ_CHAN_INT_EN		0x2010
-#define XDMA_IRQ_CHAN_INT_EN_W1S	0x2014
-#define XDMA_IRQ_CHAN_INT_EN_W1C	0x2018
-#define XDMA_IRQ_USER_INT_REQ		0x2040
-#define XDMA_IRQ_CHAN_INT_REQ		0x2044
-#define XDMA_IRQ_USER_INT_PEND		0x2048
-#define XDMA_IRQ_CHAN_INT_PEND		0x204c
-#define XDMA_IRQ_USER_VEC_NUM		0x2080
-#define XDMA_IRQ_CHAN_VEC_NUM		0x20a0
-
-#define XDMA_IRQ_VEC_SHIFT		8
-
-#endif /* __DMA_XDMA_REGS_H */
diff --git a/snd-alpx/core/generic/6.2/xilinx/xdma.c b/snd-alpx/core/generic/6.2/xilinx/xdma.c
deleted file mode 100644
index 6c89145..0000000
--- a/snd-alpx/core/generic/6.2/xilinx/xdma.c
+++ /dev/null
@@ -1,1437 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DMA driver for Xilinx DMA/Bridge Subsystem
- *
- * Copyright (C) 2017-2020 Xilinx, Inc. All rights reserved.
- * Copyright (C) 2022, Advanced Micro Devices, Inc.
- */
-
-/*
- * The DMA/Bridge Subsystem for PCI Express allows for the movement of data
- * between Host memory and the DMA subsystem. It does this by operating on
- * 'descriptors' that contain information about the source, destination and
- * amount of data to transfer. These direct memory transfers can be both in
- * the Host to Card (H2C) and Card to Host (C2H) transfers. The DMA can be
- * configured to have a single AXI4 Master interface shared by all channels
- * or one AXI4-Stream interface for each channel enabled. Memory transfers are
- * specified on a per-channel basis in descriptor linked lists, which the DMA
- * fetches from host memory and processes. Events such as descriptor completion
- * and errors are signaled using interrupts. The core also provides up to 16
- * user interrupt wires that generate interrupts to the host.
- */
-
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/bitfield.h>
-#include <linux/dmapool.h>
-
-#include <linux/regmap.h>
-
-#if defined (CONFIG_KERNEL_REDHAT)
-	#warning REDHAT Kernel
-	#if KERNEL_VERSION(5, 19, 0) <= LINUX_VERSION_CODE
-	/* Use Generic include */
-	#include "../../../../include/5.6/virt-dma.h"
-	#elif KERNEL_VERSION(4, 18, 0) <= LINUX_VERSION_CODE
-	/* Use Generic include : files equal !! */
-	#warning ReadHat 4.18 at least
-	#include "../../../../include/5.6/virt-dma.h"
-	#else
-	#error Redhat kernel NOT Supported
-	#endif
-
-#else
-	/* Generic Kernels */
-	#warning "Generic Kernels"
-	#if KERNEL_VERSION(6, 3, 0) <= LINUX_VERSION_CODE
-	#include "../virt-dma.h"
-	#elif KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE
-	#include "../../../../include/5.6/virt-dma.h"
-	#elif KERNEL_VERSION(5, 3, 0) <= LINUX_VERSION_CODE
-	#include "../../../../include/5.3/virt-dma.h"
-	#else
-	#include "../../../../include/4.16/virt-dma.h"
-	#endif
-
-#endif
-
-
-#if KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE
-#include <linux/dmaengine.h>
-#elif KERNEL_VERSION(5, 3, 0) <= LINUX_VERSION_CODE
-#include "../../../../include/5.3/dmaengine.h"
-#else
-#include "../../../../include/4.16/dmaengine.h"
-#endif
-
-#include "../../../../include/6.2/amd_xdma.h"
-#include <linux/platform_device.h>
-#include "../amd_xdma.h"
-#include <linux/dma-mapping.h>
-#include <linux/pci.h>
-
-#include "xdma-regs.h"
-
-/* mmio regmap config for all XDMA registers */
-static const struct regmap_config xdma_regmap_config = {
-	.reg_bits = 32,
-	.val_bits = 32,
-	.reg_stride = 4,
-	.max_register = XDMA_REG_SPACE_LEN,
-};
-
-/**
- * struct xdma_desc_block - Descriptor block
- * @virt_addr: Virtual address of block start
- * @dma_addr: DMA address of block start
- */
-struct xdma_desc_block {
-	void		*virt_addr;
-	dma_addr_t	dma_addr;
-};
-
-/**
- * struct xdma_c2h_write_back  - Write back block , written by the XDMA.
- * @magic_status_bit : magic (0x52B4) once written
- * @length: effective transfer length (in bytes)
- * @PADDING to be aligned on 32 bytes
- * @associated dma address
- */
-struct xdma_c2h_write_back {
-	__le32 magic_status_bit;
-	__le32 length;
-	u32 padding_1[6];
-	dma_addr_t dma_addr;
-};
-
-/**
- * struct xdma_chan - Driver specific DMA channel structure
- * @vchan: Virtual channel
- * @xdev_hdl: Pointer to DMA device structure
- * @base: Offset of channel registers
- * @desc_pool: Descriptor pool
- * @busy: Busy flag of the channel
- * @dir: Transferring direction of the channel
- * @cfg: Transferring config of the channel
- * @irq: IRQ assigned to the channel
- * @write_back : C2H meta data write back
- */
-struct xdma_chan {
-	struct virt_dma_chan		vchan;
-	void				*xdev_hdl;
-	u32				base;
-	struct dma_pool			*desc_pool;
-	bool				busy;
-	enum dma_transfer_direction	dir;
-	struct dma_slave_config		cfg;
-	u32				irq;
-	struct xdma_c2h_write_back* write_back;
-};
-
-/**
- * struct xdma_desc - DMA desc structure
- * @vdesc: Virtual DMA descriptor
- * @chan: DMA channel pointer
- * @dir: Transferring direction of the request
- * @desc_blocks: Hardware descriptor blocks
- * @dblk_num: Number of hardware descriptor blocks
- * @desc_num: Number of hardware descriptors
- * @completed_desc_num: Completed hardware descriptors
- * @cyclic: Cyclic transfer vs. scatter-gather
- * @interleaved_dma: Interleaved DMA transfer
- * @periods: Number of periods in the cyclic transfer
- * @period_size: Size of a period in bytes in cyclic transfers
- * @frames_left: Number of frames left in interleaved DMA transfer
- * @error: tx error flag
- */
-struct xdma_desc {
-	struct virt_dma_desc		vdesc;
-	struct xdma_chan		*chan;
-	enum dma_transfer_direction	dir;
-	struct xdma_desc_block		*desc_blocks;
-	u32				dblk_num;
-	u32				desc_num;
-	u32				completed_desc_num;
-	bool				cyclic;
-	bool				interleaved_dma;
-	u32				periods;
-	u32				period_size;
-	u32				frames_left;
-	bool				error;
-};
-
-#define XDMA_DEV_STATUS_REG_DMA		BIT(0)
-#define XDMA_DEV_STATUS_INIT_MSIX	BIT(1)
-
-/**
- * struct xdma_device - DMA device structure
- * @pdev: Platform device pointer
- * @dma_dev: DMA device structure
- * @rmap: MMIO regmap for DMA registers
- * @h2c_chans: Host to Card channels
- * @c2h_chans: Card to Host channels
- * @h2c_chan_num: Number of H2C channels
- * @c2h_chan_num: Number of C2H channels
- * @irq_start: Start IRQ assigned to device
- * @irq_num: Number of IRQ assigned to device
- * @status: Initialization status
- */
-struct xdma_device {
-	struct platform_device	*pdev;
-	struct dma_device	dma_dev;
-	struct regmap		*rmap;
-	struct xdma_chan	*h2c_chans;
-	struct xdma_chan	*c2h_chans;
-	u32			h2c_chan_num;
-	u32			c2h_chan_num;
-	u32			irq_start;
-	u32			irq_num;
-	u32			status;
-};
-
-#define xdma_err(xdev, fmt, args...)					\
-	dev_err(&(xdev)->pdev->dev, fmt, ##args)
-#define XDMA_CHAN_NUM(_xd) ({						\
-	typeof(_xd) (xd) = (_xd);					\
-	((xd)->h2c_chan_num + (xd)->c2h_chan_num); })
-
-/* Get the last desc in a desc block */
-static inline void *xdma_blk_last_desc(struct xdma_desc_block *block)
-{
-	return block->virt_addr + (XDMA_DESC_ADJACENT - 1) * XDMA_DESC_SIZE;
-}
-
-/**
- * xdma_link_sg_desc_blocks - Link SG descriptor blocks for DMA transfer
- * @sw_desc: Tx descriptor pointer
- */
-static void xdma_link_sg_desc_blocks(struct xdma_desc *sw_desc)
-{
-	struct xdma_desc_block *block;
-	u32 last_blk_desc, desc_control;
-	struct xdma_hw_desc *desc;
-	int i;
-
-	desc_control = XDMA_DESC_CONTROL(XDMA_DESC_ADJACENT, 0);
-	for (i = 1; i < sw_desc->dblk_num; i++) {
-		block = &sw_desc->desc_blocks[i - 1];
-		desc = xdma_blk_last_desc(block);
-
-		if (!(i & XDMA_DESC_BLOCK_MASK)) {
-			desc->control = cpu_to_le32(XDMA_DESC_CONTROL_LAST);
-			continue;
-		}
-		desc->control = cpu_to_le32(desc_control);
-		desc->next_desc = cpu_to_le64(block[1].dma_addr);
-	}
-
-	/* update the last block */
-	last_blk_desc = (sw_desc->desc_num - 1) & XDMA_DESC_ADJACENT_MASK;
-	if (((sw_desc->dblk_num - 1) & XDMA_DESC_BLOCK_MASK) > 0) {
-		block = &sw_desc->desc_blocks[sw_desc->dblk_num - 2];
-		desc = xdma_blk_last_desc(block);
-		desc_control = XDMA_DESC_CONTROL(last_blk_desc + 1, 0);
-		desc->control = cpu_to_le32(desc_control);
-	}
-
-	block = &sw_desc->desc_blocks[sw_desc->dblk_num - 1];
-	desc = block->virt_addr + last_blk_desc * XDMA_DESC_SIZE;
-	desc->control = cpu_to_le32(XDMA_DESC_CONTROL_LAST);
-}
-
-/**
- * xdma_link_cyclic_desc_blocks - Link cyclic descriptor blocks for DMA transfer
- * @sw_desc: Tx descriptor pointer
- */
-static void xdma_link_cyclic_desc_blocks(struct xdma_desc *sw_desc)
-{
-	struct xdma_desc_block *block;
-	struct xdma_hw_desc *desc;
-	int i;
-
-	block = sw_desc->desc_blocks;
-	for (i = 0; i < sw_desc->desc_num - 1; i++) {
-		desc = block->virt_addr + i * XDMA_DESC_SIZE;
-		desc->next_desc = cpu_to_le64(block->dma_addr + ((i + 1) * XDMA_DESC_SIZE));
-	}
-	desc = block->virt_addr + i * XDMA_DESC_SIZE;
-	desc->next_desc = cpu_to_le64(block->dma_addr);
-}
-
-static inline struct xdma_chan *to_xdma_chan(struct dma_chan *chan)
-{
-	return container_of(chan, struct xdma_chan, vchan.chan);
-}
-
-static inline struct xdma_desc *to_xdma_desc(struct virt_dma_desc *vdesc)
-{
-	return container_of(vdesc, struct xdma_desc, vdesc);
-}
-
-/**
- * xdma_channel_init - Initialize DMA channel registers
- * @chan: DMA channel pointer
- */
-static int xdma_channel_init(struct xdma_chan *chan)
-{
-	struct xdma_device *xdev = chan->xdev_hdl;
-	int ret;
-	unsigned int reg_ctrl = 0;
-
-	regmap_read(xdev->rmap, chan->base + XDMA_CHAN_CONTROL, &reg_ctrl);
-	dev_dbg(&xdev->pdev->dev, "CONTROL Init: 0x%08x\n", reg_ctrl);
-
-	ret = regmap_write(xdev->rmap, chan->base + XDMA_CHAN_CONTROL_W1C,
-			   CHAN_CTRL_NON_INCR_ADDR | CHAN_CTRL_TRANSFER_INFO_WB);
-	if (ret)
-		return ret;
-
-	regmap_read(xdev->rmap, chan->base + XDMA_CHAN_CONTROL, &reg_ctrl);
-	dev_dbg(&xdev->pdev->dev, "CONTROL Init: 0x%08x\n", reg_ctrl);
-
-	ret = regmap_write(xdev->rmap, chan->base + XDMA_CHAN_INTR_ENABLE,
-			   CHAN_IM_ALL);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/**
- * xdma_free_desc - Free descriptor
- * @vdesc: Virtual DMA descriptor
- */
-static void xdma_free_desc(struct virt_dma_desc *vdesc)
-{
-	struct xdma_desc *sw_desc;
-	int i;
-
-	sw_desc = to_xdma_desc(vdesc);
-	for (i = 0; i < sw_desc->dblk_num; i++) {
-		if (!sw_desc->desc_blocks[i].virt_addr)
-			break;
-		dma_pool_free(sw_desc->chan->desc_pool,
-			      sw_desc->desc_blocks[i].virt_addr,
-			      sw_desc->desc_blocks[i].dma_addr);
-	}
-	kfree(sw_desc->desc_blocks);
-	kfree(sw_desc);
-}
-
-/**
- * xdma_alloc_desc - Allocate descriptor
- * @chan: DMA channel pointer
- * @desc_num: Number of hardware descriptors
- * @cyclic: Whether this is a cyclic transfer
- */
-static struct xdma_desc *
-xdma_alloc_desc(struct xdma_chan *chan, u32 desc_num, bool cyclic)
-{
-	struct xdma_desc *sw_desc;
-	struct xdma_hw_desc *desc;
-	dma_addr_t dma_addr;
-	u32 dblk_num;
-	u32 control;
-	void *addr;
-	int i, j;
-
-	sw_desc = kzalloc(sizeof(*sw_desc), GFP_NOWAIT);
-	if (!sw_desc)
-		return NULL;
-
-	sw_desc->chan = chan;
-	sw_desc->desc_num = desc_num;
-	sw_desc->cyclic = cyclic;
-	sw_desc->error = false;
-	dblk_num = DIV_ROUND_UP(desc_num, XDMA_DESC_ADJACENT);
-	sw_desc->desc_blocks = kcalloc(dblk_num, sizeof(*sw_desc->desc_blocks),
-				       GFP_NOWAIT);
-	if (!sw_desc->desc_blocks)
-		goto failed;
-
-	if (cyclic)
-		control = XDMA_DESC_CONTROL_CYCLIC;
-	else
-		control = XDMA_DESC_CONTROL(1, 0);
-
-	sw_desc->dblk_num = dblk_num;
-	for (i = 0; i < sw_desc->dblk_num; i++) {
-		addr = dma_pool_alloc(chan->desc_pool, GFP_NOWAIT, &dma_addr);
-		if (!addr)
-			goto failed;
-
-		sw_desc->desc_blocks[i].virt_addr = addr;
-		sw_desc->desc_blocks[i].dma_addr = dma_addr;
-		for (j = 0, desc = addr; j < XDMA_DESC_ADJACENT; j++)
-			desc[j].control = cpu_to_le32(control);
-	}
-
-	if (cyclic)
-		xdma_link_cyclic_desc_blocks(sw_desc);
-	else
-		xdma_link_sg_desc_blocks(sw_desc);
-
-	return sw_desc;
-
-failed:
-	xdma_free_desc(&sw_desc->vdesc);
-	return NULL;
-}
-
-/**
- * xdma_xfer_start - Start DMA transfer
- * @xchan: DMA channel pointer
- */
-static int xdma_xfer_start(struct xdma_chan *xchan)
-{
-	struct virt_dma_desc *vd = vchan_next_desc(&xchan->vchan);
-	struct xdma_device *xdev = xchan->xdev_hdl;
-	struct xdma_desc_block *block;
-	u32 val, completed_blocks;
-	struct xdma_desc *desc;
-	int ret;
-
-	/*
-	 * check if there is not any submitted descriptor or channel is busy.
-	 * vchan lock should be held where this function is called.
-	 */
-	if (!vd || xchan->busy)
-		return -EINVAL;
-
-	/* clear run stop bit to get ready for transfer */
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL_W1C,
-			   CHAN_CTRL_RUN_STOP);
-	if (ret)
-		return ret;
-
-	desc = to_xdma_desc(vd);
-	if (desc->dir != xchan->dir) {
-		xdma_err(xdev, "incorrect request direction");
-		return -EINVAL;
-	}
-
-	/* set DMA engine to the first descriptor block */
-	completed_blocks = desc->completed_desc_num / XDMA_DESC_ADJACENT;
-	block = &desc->desc_blocks[completed_blocks];
-	val = lower_32_bits(block->dma_addr);
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_LO, val);
-	if (ret)
-		return ret;
-
-	val = upper_32_bits(block->dma_addr);
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_HI, val);
-	if (ret)
-		return ret;
-
-	if (completed_blocks + 1 == desc->dblk_num)
-		val = (desc->desc_num - 1) & XDMA_DESC_ADJACENT_MASK;
-	else
-		val = XDMA_DESC_ADJACENT - 1;
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_ADJ, val);
-	if (ret)
-		return ret;
-
-	/* kick off DMA transfer, force 0=1 transition, USE Bit clear/set registers */
-
-	regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL_W1C,
-			   CHAN_CTRL_START);
-
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL_W1S,
-			   CHAN_CTRL_START);
-	if (ret)
-		return ret;
-
-	xchan->busy = true;
-
-	return 0;
-}
-
-/**
- * xdma_xfer_stop - Stop DMA transfer
- * @xchan: DMA channel pointer
- */
-static int xdma_xfer_stop(struct xdma_chan *xchan)
-{
-	int ret;
-	u32 val;
-	struct xdma_device *xdev = xchan->xdev_hdl;
-
-	/* clear run stop bit to prevent any further auto-triggering */
-	ret = regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL_W1C,
-			   CHAN_CTRL_RUN_STOP);
-	if (ret)
-		return ret;
-
-	/* Clear the channel status register */
-	ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_STATUS_RC, &val);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/**
- * xdma_alloc_channels - Detect and allocate DMA channels
- * @xdev: DMA device pointer
- * @dir: Channel direction
- */
-static int xdma_alloc_channels(struct xdma_device *xdev,
-			       enum dma_transfer_direction dir)
-{
-	struct xdma_platdata *pdata = dev_get_platdata(&xdev->pdev->dev);
-	struct xdma_chan **chans, *xchan;
-	u32 base, identifier, target;
-	u32 *chan_num;
-	int i, j, ret;
-
-	if (dir == DMA_MEM_TO_DEV) {
-		base = XDMA_CHAN_H2C_OFFSET;
-		target = XDMA_CHAN_H2C_TARGET;
-		chans = &xdev->h2c_chans;
-		chan_num = &xdev->h2c_chan_num;
-	} else if (dir == DMA_DEV_TO_MEM) {
-		base = XDMA_CHAN_C2H_OFFSET;
-		target = XDMA_CHAN_C2H_TARGET;
-		chans = &xdev->c2h_chans;
-		chan_num = &xdev->c2h_chan_num;
-	} else {
-		xdma_err(xdev, "invalid direction specified");
-		return -EINVAL;
-	}
-
-	/* detect number of available DMA channels */
-	for (i = 0, *chan_num = 0; i < pdata->max_dma_channels; i++) {
-		ret = regmap_read(xdev->rmap, base + i * XDMA_CHAN_STRIDE,
-				  &identifier);
-		if (ret)
-			return ret;
-
-		/* check if it is available DMA channel */
-		if (XDMA_CHAN_CHECK_TARGET(identifier, target))
-			(*chan_num)++;
-	}
-
-	if (!*chan_num) {
-		xdma_err(xdev, "does not probe any channel");
-		return -EINVAL;
-	}
-
-	*chans = devm_kcalloc(&xdev->pdev->dev, *chan_num, sizeof(**chans),
-			      GFP_KERNEL);
-	if (!*chans)
-		return -ENOMEM;
-
-	for (i = 0, j = 0; i < pdata->max_dma_channels; i++) {
-		ret = regmap_read(xdev->rmap, base + i * XDMA_CHAN_STRIDE,
-				  &identifier);
-		if (ret)
-			return ret;
-
-		if (!XDMA_CHAN_CHECK_TARGET(identifier, target))
-			continue;
-
-		if (j == *chan_num) {
-			xdma_err(xdev, "invalid channel number");
-			return -EIO;
-		}
-
-		/* init channel structure and hardware */
-		xchan = &(*chans)[j];
-		xchan->xdev_hdl = xdev;
-		xchan->base = base + i * XDMA_CHAN_STRIDE;
-		xchan->dir = dir;
-
-		ret = xdma_channel_init(xchan);
-		if (ret)
-			return ret;
-		xchan->vchan.desc_free = xdma_free_desc;
-		vchan_init(&xchan->vchan, &xdev->dma_dev);
-
-		j++;
-	}
-
-	dev_info(&xdev->pdev->dev, "configured %d %s channels", j,
-		 (dir == DMA_MEM_TO_DEV) ? "H2C" : "C2H");
-
-	return 0;
-}
-
-/**
- * xdma_issue_pending - Issue pending transactions
- * @chan: DMA channel pointer
- */
-static void xdma_issue_pending(struct dma_chan *chan)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	unsigned long flags;
-
-	spin_lock_irqsave(&xdma_chan->vchan.lock, flags);
-	if (vchan_issue_pending(&xdma_chan->vchan))
-		xdma_xfer_start(xdma_chan);
-	spin_unlock_irqrestore(&xdma_chan->vchan.lock, flags);
-}
-
-/**
- * xdma_terminate_all - Terminate all transactions
- * @chan: DMA channel pointer
- */
-static int xdma_terminate_all(struct dma_chan *chan)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct virt_dma_desc *vd;
-	unsigned long flags;
-	LIST_HEAD(head);
-
-	xdma_xfer_stop(xdma_chan);
-
-	spin_lock_irqsave(&xdma_chan->vchan.lock, flags);
-
-	xdma_chan->busy = false;
-	vd = vchan_next_desc(&xdma_chan->vchan);
-	if (vd) {
-		list_del(&vd->node);
-		dma_cookie_complete(&vd->tx);
-		vchan_terminate_vdesc(vd);
-	}
-	vchan_get_all_descriptors(&xdma_chan->vchan, &head);
-	list_splice_tail(&head, &xdma_chan->vchan.desc_terminated);
-
-	spin_unlock_irqrestore(&xdma_chan->vchan.lock, flags);
-
-	return 0;
-}
-
-/**
- * xdma_synchronize - Synchronize terminated transactions
- * @chan: DMA channel pointer
- */
-static void xdma_synchronize(struct dma_chan *chan)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-
-	vchan_synchronize(&xdma_chan->vchan);
-}
-
-/**
- * xdma_fill_descs - Fill hardware descriptors for one contiguous memory chunk.
- *		     More than one descriptor will be used if the size is bigger
- *		     than XDMA_DESC_BLEN_MAX.
- * @sw_desc: Descriptor container
- * @src_addr: First value for the ->src_addr field
- * @dst_addr: First value for the ->dst_addr field
- * @size: Size of the contiguous memory block
- * @desc_start_num: Index of the first descriptor to take care of in @sw_desc
- */
-static inline u32 xdma_fill_descs(struct xdma_desc *sw_desc, u64 src_addr,
-				  u64 dst_addr, u32 size, u32 filled_descs_num)
-{
-	u32 left = size, len, desc_num = filled_descs_num;
-	struct xdma_desc_block *dblk;
-	struct xdma_hw_desc *desc;
-
-	dblk = sw_desc->desc_blocks + (desc_num / XDMA_DESC_ADJACENT);
-	desc = dblk->virt_addr;
-	desc += desc_num & XDMA_DESC_ADJACENT_MASK;
-	do {
-		len = min_t(u32, left, XDMA_DESC_BLEN_MAX);
-		/* set hardware descriptor */
-		desc->bytes = cpu_to_le32(len);
-		desc->src_addr = cpu_to_le64(src_addr);
-		desc->dst_addr = cpu_to_le64(dst_addr);
-
-		dev_dbg(NULL, "desc[%u]:%p {src:0x%llx, dst: 0x%llx, length: %u}",
-					desc_num,
-					desc,
-					src_addr,
-					dst_addr,
-					len);
-
-		if (!(++desc_num & XDMA_DESC_ADJACENT_MASK))
-			desc = (++dblk)->virt_addr;
-		else
-			desc++;
-
-		src_addr += len;
-		dst_addr += len;
-		left -= len;
-	} while (left);
-
-	return desc_num - filled_descs_num;
-}
-
-/**
- * xdma_prep_device_sg - prepare a descriptor for a DMA transaction
- * @chan: DMA channel pointer
- * @sgl: Transfer scatter gather list
- * @sg_len: Length of scatter gather list
- * @dir: Transfer direction
- * @flags: transfer ack flags
- * @context: APP words of the descriptor
- */
-static struct dma_async_tx_descriptor *
-xdma_prep_device_sg(struct dma_chan *chan, struct scatterlist *sgl,
-		    unsigned int sg_len, enum dma_transfer_direction dir,
-		    unsigned long flags, void *context)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct xdma_device *xdev = xdma_chan ->xdev_hdl;
-
-	struct dma_async_tx_descriptor *tx_desc;
-	struct xdma_desc *sw_desc;
-	u32 desc_num = 0, i;
-	u64 addr, dev_addr, *src, *dst;
-	struct scatterlist *sg;
-
-	for_each_sg(sgl, sg, sg_len, i)
-		desc_num += DIV_ROUND_UP(sg_dma_len(sg), XDMA_DESC_BLEN_MAX);
-
-	sw_desc = xdma_alloc_desc(xdma_chan, desc_num, false);
-	if (!sw_desc)
-		return NULL;
-	sw_desc->dir = dir;
-	sw_desc->cyclic = false;
-	sw_desc->interleaved_dma = false;
-
-	if (dir == DMA_MEM_TO_DEV) {
-		dev_addr = xdma_chan->cfg.dst_addr;
-		src = &addr;
-		dst = &dev_addr;
-	} else {
-		dev_addr = xdma_chan->cfg.src_addr ? xdma_chan->cfg.src_addr : xdma_chan->write_back->dma_addr;
-		src = &dev_addr;
-		dst = &addr;
-	}
-
-	dev_dbg(&xdev->pdev->dev, "desc[%s]:%p {src: %p, dst: %p, length: %u}",
-			dir == DMA_MEM_TO_DEV ? "C2H" : "H2C",
-			sw_desc,
-			src,
-			dst,
-			sg_dma_len(sg));
-
-
-	desc_num = 0;
-	for_each_sg(sgl, sg, sg_len, i) {
-		addr = sg_dma_address(sg);
-		desc_num += xdma_fill_descs(sw_desc, *src, *dst, sg_dma_len(sg), desc_num);
-		dev_addr += sg_dma_len(sg);
-	}
-
-	tx_desc = vchan_tx_prep(&xdma_chan->vchan, &sw_desc->vdesc, flags);
-	if (!tx_desc)
-		goto failed;
-
-	return tx_desc;
-
-failed:
-	xdma_free_desc(&sw_desc->vdesc);
-
-	return NULL;
-}
-
-/**
- * xdma_prep_dma_cyclic - prepare for cyclic DMA transactions
- * @chan: DMA channel pointer
- * @address: Device DMA address to access
- * @size: Total length to transfer
- * @period_size: Period size to use for each transfer
- * @dir: Transfer direction
- * @flags: Transfer ack flags
- */
-static struct dma_async_tx_descriptor *
-xdma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t address,
-		     size_t size, size_t period_size,
-		     enum dma_transfer_direction dir,
-		     unsigned long flags)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct xdma_device *xdev = xdma_chan->xdev_hdl;
-	unsigned int periods = size / period_size;
-	struct dma_async_tx_descriptor *tx_desc;
-	struct xdma_desc *sw_desc;
-	u64 addr, dev_addr, *src, *dst;
-	u32 desc_num = 0;
-	unsigned int i;
-
-	/*
-	 * Simplify the whole logic by preventing an abnormally high number of
-	 * periods and periods size.
-	 */
-	if (period_size > XDMA_DESC_BLEN_MAX) {
-		xdma_err(xdev, "period size limited to %lu bytes\n", XDMA_DESC_BLEN_MAX);
-		return NULL;
-	}
-
-	if (periods > XDMA_DESC_ADJACENT) {
-		xdma_err(xdev, "number of periods limited to %u\n", XDMA_DESC_ADJACENT);
-		return NULL;
-	}
-
-	sw_desc = xdma_alloc_desc(xdma_chan, periods, true);
-	if (!sw_desc)
-		return NULL;
-
-	sw_desc->periods = periods;
-	sw_desc->period_size = period_size;
-	sw_desc->dir = dir;
-	sw_desc->interleaved_dma = false;
-
-	addr = address;
-	if (dir == DMA_MEM_TO_DEV) {
-		dev_addr = xdma_chan->cfg.dst_addr;
-		src = &addr;
-		dst = &dev_addr;
-	} else {
-		dev_addr = xdma_chan->cfg.src_addr ? xdma_chan->cfg.src_addr : xdma_chan->write_back->dma_addr;
-		src = &dev_addr;
-		dst = &addr;
-	}
-
-	dev_dbg(&xdev->pdev->dev, "desc[%s]:%p {src: %p, dst: %p, length: %lu}",
-		dir == DMA_MEM_TO_DEV ? "C2H" : "H2C",
-		sw_desc,
-		src,
-		dst,
-		period_size);
-
-	for (i = 0; i < periods; i++) {
-		xdma_fill_descs(sw_desc, *src, *dst, period_size, desc_num++);
-		addr += period_size;
-	}
-
-	tx_desc = vchan_tx_prep(&xdma_chan->vchan, &sw_desc->vdesc, flags);
-	if (!tx_desc)
-		goto failed;
-
-	return tx_desc;
-
-failed:
-	xdma_free_desc(&sw_desc->vdesc);
-
-	return NULL;
-}
-
-/**
- * xdma_prep_interleaved_dma - Prepare virtual descriptor for interleaved DMA transfers
- * @chan: DMA channel
- * @xt: DMA transfer template
- * @flags: tx flags
- */
-static struct dma_async_tx_descriptor *
-xdma_prep_interleaved_dma(struct dma_chan *chan,
-			  struct dma_interleaved_template *xt,
-			  unsigned long flags)
-{
-	int i;
-	u32 desc_num = 0, period_size = 0;
-	struct dma_async_tx_descriptor *tx_desc;
-	struct xdma_chan *xchan = to_xdma_chan(chan);
-	struct xdma_desc *sw_desc;
-	u64 src_addr, dst_addr;
-
-	for (i = 0; i < xt->frame_size; ++i)
-		desc_num += DIV_ROUND_UP(xt->sgl[i].size, XDMA_DESC_BLEN_MAX);
-
-	sw_desc = xdma_alloc_desc(xchan, desc_num, false);
-	if (!sw_desc)
-		return NULL;
-	sw_desc->dir = xt->dir;
-	sw_desc->interleaved_dma = true;
-	sw_desc->cyclic = flags & DMA_PREP_REPEAT;
-	sw_desc->frames_left = xt->numf;
-	sw_desc->periods = xt->numf;
-
-	desc_num = 0;
-	src_addr = xt->src_start;
-	dst_addr = xt->dst_start;
-	for (i = 0; i < xt->frame_size; ++i) {
-		desc_num += xdma_fill_descs(sw_desc, src_addr, dst_addr, xt->sgl[i].size, desc_num);
-		src_addr += dmaengine_get_src_icg(xt, &xt->sgl[i]) + (xt->src_inc ?
-							      xt->sgl[i].size : 0);
-		dst_addr += dmaengine_get_dst_icg(xt, &xt->sgl[i]) + (xt->dst_inc ?
-							      xt->sgl[i].size : 0);
-		period_size += xt->sgl[i].size;
-	}
-	sw_desc->period_size = period_size;
-
-	tx_desc = vchan_tx_prep(&xchan->vchan, &sw_desc->vdesc, flags);
-	if (tx_desc)
-		return tx_desc;
-
-	xdma_free_desc(&sw_desc->vdesc);
-	return NULL;
-}
-
-/**
- * xdma_device_config - Configure the DMA channel
- * @chan: DMA channel
- * @cfg: channel configuration
- */
-static int xdma_device_config(struct dma_chan *chan,
-			      struct dma_slave_config *cfg)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-
-	memcpy(&xdma_chan->cfg, cfg, sizeof(*cfg));
-
-	return 0;
-}
-
-/**
- * xdma_free_chan_resources - Free channel resources
- * @chan: DMA channel
- */
-static void xdma_free_chan_resources(struct dma_chan *chan)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-
-	vchan_free_chan_resources(&xdma_chan->vchan);
-	dma_pool_free(xdma_chan->desc_pool,
-				xdma_chan->write_back,
-			   xdma_chan->write_back->dma_addr);
-	dma_pool_destroy(xdma_chan->desc_pool);
-	xdma_chan->desc_pool = NULL;
-}
-
-/**
- * xdma_alloc_chan_resources - Allocate channel resources
- * @chan: DMA channel
- */
-static int xdma_alloc_chan_resources(struct dma_chan *chan)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct xdma_device *xdev = xdma_chan->xdev_hdl;
-	struct device *dev = xdev->dma_dev.dev;
-	dma_addr_t write_back_addr;
-
-	while (dev && !dev_is_pci(dev))
-		dev = dev->parent;
-	if (!dev) {
-		xdma_err(xdev, "unable to find pci device");
-		return -EINVAL;
-	}
-
-	//Allocate the pool WITH the H2C write back
-	xdma_chan->desc_pool = dma_pool_create(dma_chan_name(chan), dev, XDMA_DESC_BLOCK_SIZE +
-									sizeof(struct xdma_c2h_write_back),
-					       XDMA_DESC_BLOCK_ALIGN, XDMA_DESC_BLOCK_BOUNDARY);
-	if (!xdma_chan->desc_pool) {
-		xdma_err(xdev, "unable to allocate descriptor pool");
-		return -ENOMEM;
-	}
-
-	/* Allocate the C2H write back out of the pool*/
-
-	xdma_chan->write_back = dma_pool_alloc(xdma_chan->desc_pool, GFP_NOWAIT, &write_back_addr);
-
-	dev_dbg(dev, "C2H write_back : %p, dma_addr: %lld", xdma_chan->write_back, write_back_addr);
-
-	if (!xdma_chan->write_back) {
-		xdma_err(xdev, "unable to allocate C2H write back block");
-		return -ENOMEM;
-	}
-	xdma_chan->write_back->dma_addr = write_back_addr;
-
-
-	return 0;
-}
-
-static enum dma_status xdma_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
-				      struct dma_tx_state *state)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct xdma_desc *desc = NULL;
-	struct virt_dma_desc *vd;
-	enum dma_status ret;
-	unsigned long flags;
-	unsigned int period_idx;
-	u32 residue = 0;
-
-	ret = dma_cookie_status(chan, cookie, state);
-	if (ret == DMA_COMPLETE)
-		return ret;
-
-	spin_lock_irqsave(&xdma_chan->vchan.lock, flags);
-
-	vd = vchan_find_desc(&xdma_chan->vchan, cookie);
-	if (!vd)
-		goto out;
-
-	desc = to_xdma_desc(vd);
-	if (desc->error) {
-		ret = DMA_ERROR;
-	} else if (desc->cyclic) {
-		period_idx = desc->completed_desc_num % desc->periods;
-		residue = (desc->periods - period_idx) * desc->period_size;
-		dma_set_residue(state, residue);
-	}
-out:
-	spin_unlock_irqrestore(&xdma_chan->vchan.lock, flags);
-
-	return ret;
-}
-
-/**
- * xdma_channel_isr - XDMA channel interrupt handler
- * @irq: IRQ number
- * @dev_id: Pointer to the DMA channel structure
- */
-static irqreturn_t xdma_channel_isr(int irq, void *dev_id)
-{
-	struct xdma_chan *xchan = dev_id;
-	u32 complete_desc_num = 0;
-	struct xdma_device *xdev = xchan->xdev_hdl;
-	struct virt_dma_desc *vd, *next_vd;
-	struct xdma_desc *desc;
-	int ret;
-	u32 st;
-	bool repeat_tx;
-
-	spin_lock(&xchan->vchan.lock);
-
-	/* get submitted request */
-	vd = vchan_next_desc(&xchan->vchan);
-	if (!vd)
-		goto out;
-
-	/* Clear-on-read the status register */
-	ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_STATUS_RC, &st);
-	if (ret)
-		goto out;
-
-	desc = to_xdma_desc(vd);
-
-	st &= XDMA_CHAN_STATUS_MASK;
-	if ((st & XDMA_CHAN_ERROR_MASK) ||
-	    !(st & (CHAN_CTRL_IE_DESC_COMPLETED | CHAN_CTRL_IE_DESC_STOPPED))) {
-		desc->error = true;
-		xdma_err(xdev, "channel error, status register value: 0x%x", st);
-		goto out;
-	}
-
-	ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_COMPLETED_DESC,
-			  &complete_desc_num);
-	if (ret)
-		goto out;
-
-	if (desc->interleaved_dma) {
-		xchan->busy = false;
-		desc->completed_desc_num += complete_desc_num;
-		if (complete_desc_num == XDMA_DESC_BLOCK_NUM * XDMA_DESC_ADJACENT) {
-			xdma_xfer_start(xchan);
-			goto out;
-		}
-
-		/* last desc of any frame */
-		desc->frames_left--;
-		if (desc->frames_left)
-			goto out;
-
-		/* last desc of the last frame  */
-		repeat_tx = vd->tx.flags & DMA_PREP_REPEAT;
-		next_vd = list_first_entry_or_null(&vd->node, struct virt_dma_desc, node);
-		if (next_vd)
-			repeat_tx = repeat_tx && !(next_vd->tx.flags & DMA_PREP_LOAD_EOT);
-		if (repeat_tx) {
-			desc->frames_left = desc->periods;
-			desc->completed_desc_num = 0;
-			vchan_cyclic_callback(vd);
-		} else {
-			list_del(&vd->node);
-			vchan_cookie_complete(vd);
-		}
-		/* start (or continue) the tx of a first desc on the vc.desc_issued list, if any */
-		xdma_xfer_start(xchan);
-	} else if (!desc->cyclic) {
-		xchan->busy = false;
-		desc->completed_desc_num += complete_desc_num;
-
-		/* if all data blocks are transferred, remove and complete the request */
-		if (desc->completed_desc_num == desc->desc_num) {
-			list_del(&vd->node);
-			vchan_cookie_complete(vd);
-			goto out;
-		}
-
-		if (desc->completed_desc_num > desc->desc_num ||
-		    complete_desc_num != XDMA_DESC_BLOCK_NUM * XDMA_DESC_ADJACENT)
-			goto out;
-
-		/* transfer the rest of data */
-		xdma_xfer_start(xchan);
-	} else {
-		desc->completed_desc_num = complete_desc_num;
-		vchan_cyclic_callback(vd);
-	}
-
-out:
-	spin_unlock(&xchan->vchan.lock);
-	return IRQ_HANDLED;
-}
-
-/**
- * xdma_irq_fini - Uninitialize IRQ
- * @xdev: DMA device pointer
- */
-static void xdma_irq_fini(struct xdma_device *xdev)
-{
-	int i;
-
-	/* disable interrupt */
-	regmap_write(xdev->rmap, XDMA_IRQ_CHAN_INT_EN_W1C, ~0);
-
-	/* free irq handler */
-	for (i = 0; i < xdev->h2c_chan_num; i++)
-		free_irq(xdev->h2c_chans[i].irq, &xdev->h2c_chans[i]);
-
-	for (i = 0; i < xdev->c2h_chan_num; i++)
-		free_irq(xdev->c2h_chans[i].irq, &xdev->c2h_chans[i]);
-}
-
-/**
- * xdma_set_vector_reg - configure hardware IRQ registers
- * @xdev: DMA device pointer
- * @vec_tbl_start: Start of IRQ registers
- * @irq_start: Start of IRQ
- * @irq_num: Number of IRQ
- */
-static int xdma_set_vector_reg(struct xdma_device *xdev, u32 vec_tbl_start,
-			       u32 irq_start, u32 irq_num)
-{
-	u32 shift, i, val = 0;
-	int ret;
-
-	/* Each IRQ register is 32 bit and contains 4 IRQs */
-	while (irq_num > 0) {
-		for (i = 0; i < 4; i++) {
-			shift = XDMA_IRQ_VEC_SHIFT * i;
-			val |= irq_start << shift;
-			irq_start++;
-			irq_num--;
-			if (!irq_num)
-				break;
-		}
-
-		/* write IRQ register */
-		ret = regmap_write(xdev->rmap, vec_tbl_start, val);
-		if (ret)
-			return ret;
-		vec_tbl_start += sizeof(u32);
-		val = 0;
-	}
-
-	return 0;
-}
-
-/**
- * xdma_irq_init - initialize IRQs
- * @xdev: DMA device pointer
- */
-static int xdma_irq_init(struct xdma_device *xdev)
-{
-	u32 irq = xdev->irq_start;
-	u32 user_irq_start;
-	int i, j, ret;
-
-	/* return failure if there are not enough IRQs */
-	if (xdev->irq_num < XDMA_CHAN_NUM(xdev)) {
-		xdma_err(xdev, "not enough irq");
-		return -EINVAL;
-	}
-
-	/* setup H2C interrupt handler */
-	for (i = 0; i < xdev->h2c_chan_num; i++) {
-		ret = request_irq(irq, xdma_channel_isr, 0,
-				  "xdma-h2c-channel", &xdev->h2c_chans[i]);
-		if (ret) {
-			xdma_err(xdev, "H2C channel%d request irq%d failed: %d",
-				 i, irq, ret);
-			goto failed_init_h2c;
-		}
-		xdev->h2c_chans[i].irq = irq;
-		irq++;
-	}
-
-	/* setup C2H interrupt handler */
-	for (j = 0; j < xdev->c2h_chan_num; j++) {
-		ret = request_irq(irq, xdma_channel_isr, 0,
-				  "xdma-c2h-channel", &xdev->c2h_chans[j]);
-		if (ret) {
-			xdma_err(xdev, "C2H channel%d request irq%d failed: %d",
-				 j, irq, ret);
-			goto failed_init_c2h;
-		}
-		xdev->c2h_chans[j].irq = irq;
-		irq++;
-	}
-
-	/* config hardware IRQ registers */
-	ret = xdma_set_vector_reg(xdev, XDMA_IRQ_CHAN_VEC_NUM, 0,
-				  XDMA_CHAN_NUM(xdev));
-	if (ret) {
-		xdma_err(xdev, "failed to set channel vectors: %d", ret);
-		goto failed_init_c2h;
-	}
-
-	/* config user IRQ registers if needed */
-	user_irq_start = XDMA_CHAN_NUM(xdev);
-	if (xdev->irq_num > user_irq_start) {
-		ret = xdma_set_vector_reg(xdev, XDMA_IRQ_USER_VEC_NUM,
-					  user_irq_start,
-					  xdev->irq_num - user_irq_start);
-		if (ret) {
-			xdma_err(xdev, "failed to set user vectors: %d", ret);
-			goto failed_init_c2h;
-		}
-	}
-
-	/* enable interrupt */
-	ret = regmap_write(xdev->rmap, XDMA_IRQ_CHAN_INT_EN_W1S, ~0);
-	if (ret)
-		goto failed_init_c2h;
-
-	return 0;
-
-failed_init_c2h:
-	while (j--)
-		free_irq(xdev->c2h_chans[j].irq, &xdev->c2h_chans[j]);
-failed_init_h2c:
-	while (i--)
-		free_irq(xdev->h2c_chans[i].irq, &xdev->h2c_chans[i]);
-
-	return ret;
-}
-
-static bool xdma_filter_fn(struct dma_chan *chan, void *param)
-{
-	struct xdma_chan *xdma_chan = to_xdma_chan(chan);
-	struct xdma_chan_info *chan_info = param;
-
-	return chan_info->dir == xdma_chan->dir;
-}
-
-/**
- * xdma_disable_user_irq - Disable user interrupt
- * @pdev: Pointer to the platform_device structure
- * @irq_num: System IRQ number
- */
-void xdma_disable_user_irq(struct platform_device *pdev, u32 irq_num)
-{
-	struct xdma_device *xdev = platform_get_drvdata(pdev);
-	u32 index;
-
-	index = irq_num - xdev->irq_start;
-	if (index < XDMA_CHAN_NUM(xdev) || index >= xdev->irq_num) {
-		xdma_err(xdev, "invalid user irq number");
-		return;
-	}
-	index -= XDMA_CHAN_NUM(xdev);
-
-	regmap_write(xdev->rmap, XDMA_IRQ_USER_INT_EN_W1C, 1 << index);
-}
-EXPORT_SYMBOL(xdma_disable_user_irq);
-
-/**
- * xdma_enable_user_irq - Enable user logic interrupt
- * @pdev: Pointer to the platform_device structure
- * @irq_num: System IRQ number
- */
-int xdma_enable_user_irq(struct platform_device *pdev, u32 irq_num)
-{
-	struct xdma_device *xdev = platform_get_drvdata(pdev);
-	u32 index;
-	int ret;
-
-	index = irq_num - xdev->irq_start;
-	if (index < XDMA_CHAN_NUM(xdev) || index >= xdev->irq_num) {
-		xdma_err(xdev, "invalid user irq number");
-		return -EINVAL;
-	}
-	index -= XDMA_CHAN_NUM(xdev);
-
-	ret = regmap_write(xdev->rmap, XDMA_IRQ_USER_INT_EN_W1S, 1 << index);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-EXPORT_SYMBOL(xdma_enable_user_irq);
-
-/**
- * xdma_get_user_irq - Get system IRQ number
- * @pdev: Pointer to the platform_device structure
- * @user_irq_index: User logic IRQ wire index
- *
- * Return: The system IRQ number allocated for the given wire index.
- */
-int xdma_get_user_irq(struct platform_device *pdev, u32 user_irq_index)
-{
-	struct xdma_device *xdev = platform_get_drvdata(pdev);
-
-	if (XDMA_CHAN_NUM(xdev) + user_irq_index >= xdev->irq_num) {
-		xdma_err(xdev, "invalid user irq index");
-		return -EINVAL;
-	}
-
-	return xdev->irq_start + XDMA_CHAN_NUM(xdev) + user_irq_index;
-}
-EXPORT_SYMBOL(xdma_get_user_irq);
-
-/**
- * xdma_remove - Driver remove function
- * @pdev: Pointer to the platform_device structure
- */
-static int xdma_remove(struct platform_device *pdev)
-{
-	struct xdma_device *xdev = platform_get_drvdata(pdev);
-
-	if (xdev->status & XDMA_DEV_STATUS_INIT_MSIX)
-		xdma_irq_fini(xdev);
-
-	if (xdev->status & XDMA_DEV_STATUS_REG_DMA)
-		dma_async_device_unregister(&xdev->dma_dev);
-    
-    return 0;
-}
-
-/**
- * xdma_probe - Driver probe function
- * @pdev: Pointer to the platform_device structure
- */
-static int xdma_probe(struct platform_device *pdev)
-{
-	struct xdma_platdata *pdata = dev_get_platdata(&pdev->dev);
-	struct xdma_device *xdev;
-	void __iomem *reg_base;
-	struct resource *res;
-	int ret = -ENODEV;
-
-	if (pdata->max_dma_channels > XDMA_MAX_CHANNELS) {
-		dev_err(&pdev->dev, "invalid max dma channels %d",
-			pdata->max_dma_channels);
-		return -EINVAL;
-	}
-
-	xdev = devm_kzalloc(&pdev->dev, sizeof(*xdev), GFP_KERNEL);
-	if (!xdev)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, xdev);
-	xdev->pdev = pdev;
-
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
-		xdma_err(xdev, "failed to get irq resource");
-		goto failed;
-	}
-	xdev->irq_start = res->start;
-	xdev->irq_num = resource_size(res);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		xdma_err(xdev, "failed to get io resource");
-		goto failed;
-	}
-
-	reg_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(reg_base)) {
-		xdma_err(xdev, "ioremap failed");
-		goto failed;
-	}
-
-    dev_dbg(&pdev->dev, " %s - config: %p (%lu bytes), reg_bits:%d, reg_stride:%d, pad_bits:%d, val_bits:%d, &val_bits:%p",
-             __func__,
-             &xdma_regmap_config,
-             sizeof(struct regmap_config),
-             xdma_regmap_config.reg_bits, 
-             xdma_regmap_config.reg_stride,
-             xdma_regmap_config.pad_bits,
-             xdma_regmap_config.val_bits,
-             &xdma_regmap_config.val_bits);
-    
-	xdev->rmap = devm_regmap_init_mmio(&pdev->dev, reg_base,
-					   &xdma_regmap_config);
-    if (IS_ERR(xdev->rmap)) {
-        ret = PTR_ERR(xdev->rmap);
-        xdma_err(xdev, "config regmap failed: %d", ret);
-        goto failed;
-    }
-    
-	INIT_LIST_HEAD(&xdev->dma_dev.channels);
-
-	ret = xdma_alloc_channels(xdev, DMA_MEM_TO_DEV);
-	if (ret) {
-		xdma_err(xdev, "config H2C channels failed: %d", ret);
-		goto failed;
-	}
-
-	ret = xdma_alloc_channels(xdev, DMA_DEV_TO_MEM);
-	if (ret) {
-		xdma_err(xdev, "config C2H channels failed: %d", ret);
-		goto failed;
-	}
-
-	dma_cap_set(DMA_SLAVE, xdev->dma_dev.cap_mask);
-	dma_cap_set(DMA_PRIVATE, xdev->dma_dev.cap_mask);
-	dma_cap_set(DMA_CYCLIC, xdev->dma_dev.cap_mask);
-	dma_cap_set(DMA_INTERLEAVE, xdev->dma_dev.cap_mask);
-	dma_cap_set(DMA_REPEAT, xdev->dma_dev.cap_mask);
-	dma_cap_set(DMA_LOAD_EOT, xdev->dma_dev.cap_mask);
-
-	xdev->dma_dev.dev = &pdev->dev;
-	xdev->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
-	xdev->dma_dev.device_free_chan_resources = xdma_free_chan_resources;
-	xdev->dma_dev.device_alloc_chan_resources = xdma_alloc_chan_resources;
-	xdev->dma_dev.device_tx_status = xdma_tx_status;
-	xdev->dma_dev.device_prep_slave_sg = xdma_prep_device_sg;
-	xdev->dma_dev.device_config = xdma_device_config;
-	xdev->dma_dev.device_issue_pending = xdma_issue_pending;
-	xdev->dma_dev.device_terminate_all = xdma_terminate_all;
-	xdev->dma_dev.device_synchronize = xdma_synchronize;
-	xdev->dma_dev.filter.map = pdata->device_map;
-	xdev->dma_dev.filter.mapcnt = pdata->device_map_cnt;
-	xdev->dma_dev.filter.fn = xdma_filter_fn;
-	xdev->dma_dev.device_prep_dma_cyclic = xdma_prep_dma_cyclic;
-	xdev->dma_dev.device_prep_interleaved_dma = xdma_prep_interleaved_dma;
-
-	ret = dma_async_device_register(&xdev->dma_dev);
-	if (ret) {
-		xdma_err(xdev, "failed to register Xilinx XDMA: %d", ret);
-		goto failed;
-	}
-	xdev->status |= XDMA_DEV_STATUS_REG_DMA;
-
-	ret = xdma_irq_init(xdev);
-	if (ret) {
-		xdma_err(xdev, "failed to init msix: %d", ret);
-		goto failed;
-	}
-	xdev->status |= XDMA_DEV_STATUS_INIT_MSIX;
-
-	return 0;
-
-failed:
-	xdma_remove(pdev);
-
-	return ret;
-}
-
-static const struct platform_device_id xdma_id_table[] = {
-	{ "xdma", 0},
-	{ },
-};
-
-static struct platform_driver xdma_driver = {
-	.driver		= {
-		.name = "xdma",
-	},
-	.id_table	= xdma_id_table,
-	.probe		= xdma_probe,
-	.remove	= xdma_remove,
-};
-
-module_platform_driver(xdma_driver);
-
-MODULE_DESCRIPTION("AMD XDMA driver");
-MODULE_AUTHOR("XRT Team <runtimeca39d@amd.com>");
-MODULE_LICENSE("GPL");