1 files changed, 0 insertions, 321 deletions

diff --git a/sound/soc/intel/common/sst-ipc.c b/sound/soc/intel/common/sst-ipc.c
deleted file mode 100644
index 6068bb697e22..000000000000
--- a/sound/soc/intel/common/sst-ipc.c
+++ /dev/null
@@ -1,321 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel SST generic IPC Support
- *
- * Copyright (C) 2015, Intel Corporation. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/wait.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <sound/asound.h>
-
-#include "sst-dsp.h"
-#include "sst-dsp-priv.h"
-#include "sst-ipc.h"
-
-/* IPC message timeout (msecs) */
-#define IPC_TIMEOUT_MSECS	300
-
-#define IPC_EMPTY_LIST_SIZE	8
-
-/* locks held by caller */
-static struct ipc_message *msg_get_empty(struct sst_generic_ipc *ipc)
-{
-	struct ipc_message *msg = NULL;
-
-	if (!list_empty(&ipc->empty_list)) {
-		msg = list_first_entry(&ipc->empty_list, struct ipc_message,
-			list);
-		list_del(&msg->list);
-	}
-
-	return msg;
-}
-
-static int tx_wait_done(struct sst_generic_ipc *ipc,
-	struct ipc_message *msg, struct sst_ipc_message *reply)
-{
-	unsigned long flags;
-	int ret;
-
-	/* wait for DSP completion (in all cases atm inc pending) */
-	ret = wait_event_timeout(msg->waitq, msg->complete,
-		msecs_to_jiffies(IPC_TIMEOUT_MSECS));
-
-	spin_lock_irqsave(&ipc->dsp->spinlock, flags);
-	if (ret == 0) {
-		if (ipc->ops.shim_dbg != NULL)
-			ipc->ops.shim_dbg(ipc, "message timeout");
-
-		list_del(&msg->list);
-		ret = -ETIMEDOUT;
-	} else {
-
-		/* copy the data returned from DSP */
-		if (reply) {
-			reply->header = msg->rx.header;
-			if (reply->data)
-				memcpy(reply->data, msg->rx.data, msg->rx.size);
-		}
-		ret = msg->errno;
-	}
-
-	list_add_tail(&msg->list, &ipc->empty_list);
-	spin_unlock_irqrestore(&ipc->dsp->spinlock, flags);
-	return ret;
-}
-
-static int ipc_tx_message(struct sst_generic_ipc *ipc,
-	struct sst_ipc_message request,
-	struct sst_ipc_message *reply, int wait)
-{
-	struct ipc_message *msg;
-	unsigned long flags;
-
-	spin_lock_irqsave(&ipc->dsp->spinlock, flags);
-
-	msg = msg_get_empty(ipc);
-	if (msg == NULL) {
-		spin_unlock_irqrestore(&ipc->dsp->spinlock, flags);
-		return -EBUSY;
-	}
-
-	msg->tx.header = request.header;
-	msg->tx.size = request.size;
-	msg->rx.header = 0;
-	msg->rx.size = reply ? reply->size : 0;
-	msg->wait = wait;
-	msg->errno = 0;
-	msg->pending = false;
-	msg->complete = false;
-
-	if ((request.size) && (ipc->ops.tx_data_copy != NULL))
-		ipc->ops.tx_data_copy(msg, request.data, request.size);
-
-	list_add_tail(&msg->list, &ipc->tx_list);
-	schedule_work(&ipc->kwork);
-	spin_unlock_irqrestore(&ipc->dsp->spinlock, flags);
-
-	if (wait)
-		return tx_wait_done(ipc, msg, reply);
-	else
-		return 0;
-}
-
-static int msg_empty_list_init(struct sst_generic_ipc *ipc)
-{
-	int i;
-
-	ipc->msg = kcalloc(IPC_EMPTY_LIST_SIZE, sizeof(struct ipc_message),
-			   GFP_KERNEL);
-	if (ipc->msg == NULL)
-		return -ENOMEM;
-
-	for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
-		ipc->msg[i].tx.data = kzalloc(ipc->tx_data_max_size, GFP_KERNEL);
-		if (ipc->msg[i].tx.data == NULL)
-			goto free_mem;
-
-		ipc->msg[i].rx.data = kzalloc(ipc->rx_data_max_size, GFP_KERNEL);
-		if (ipc->msg[i].rx.data == NULL) {
-			kfree(ipc->msg[i].tx.data);
-			goto free_mem;
-		}
-
-		init_waitqueue_head(&ipc->msg[i].waitq);
-		list_add(&ipc->msg[i].list, &ipc->empty_list);
-	}
-
-	return 0;
-
-free_mem:
-	while (i > 0) {
-		kfree(ipc->msg[i-1].tx.data);
-		kfree(ipc->msg[i-1].rx.data);
-		--i;
-	}
-	kfree(ipc->msg);
-
-	return -ENOMEM;
-}
-
-static void ipc_tx_msgs(struct work_struct *work)
-{
-	struct sst_generic_ipc *ipc =
-		container_of(work, struct sst_generic_ipc, kwork);
-	struct ipc_message *msg;
-
-	spin_lock_irq(&ipc->dsp->spinlock);
-
-	while (!list_empty(&ipc->tx_list) && !ipc->pending) {
-		/* if the DSP is busy, we will TX messages after IRQ.
-		 * also postpone if we are in the middle of processing
-		 * completion irq
-		 */
-		if (ipc->ops.is_dsp_busy && ipc->ops.is_dsp_busy(ipc->dsp)) {
-			dev_dbg(ipc->dev, "ipc_tx_msgs dsp busy\n");
-			break;
-		}
-
-		msg = list_first_entry(&ipc->tx_list, struct ipc_message, list);
-		list_move(&msg->list, &ipc->rx_list);
-
-		if (ipc->ops.tx_msg != NULL)
-			ipc->ops.tx_msg(ipc, msg);
-	}
-
-	spin_unlock_irq(&ipc->dsp->spinlock);
-}
-
-int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc,
-	struct sst_ipc_message request, struct sst_ipc_message *reply)
-{
-	int ret;
-
-	/*
-	 * DSP maybe in lower power active state, so
-	 * check if the DSP supports DSP lp On method
-	 * if so invoke that before sending IPC
-	 */
-	if (ipc->ops.check_dsp_lp_on)
-		if (ipc->ops.check_dsp_lp_on(ipc->dsp, true))
-			return -EIO;
-
-	ret = ipc_tx_message(ipc, request, reply, 1);
-
-	if (ipc->ops.check_dsp_lp_on)
-		if (ipc->ops.check_dsp_lp_on(ipc->dsp, false))
-			return -EIO;
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_ipc_tx_message_wait);
-
-int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc,
-	struct sst_ipc_message request)
-{
-	return ipc_tx_message(ipc, request, NULL, 0);
-}
-EXPORT_SYMBOL_GPL(sst_ipc_tx_message_nowait);
-
-int sst_ipc_tx_message_nopm(struct sst_generic_ipc *ipc,
-	struct sst_ipc_message request, struct sst_ipc_message *reply)
-{
-	return ipc_tx_message(ipc, request, reply, 1);
-}
-EXPORT_SYMBOL_GPL(sst_ipc_tx_message_nopm);
-
-struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
-	u64 header)
-{
-	struct ipc_message *msg;
-	u64 mask;
-
-	if (ipc->ops.reply_msg_match != NULL)
-		header = ipc->ops.reply_msg_match(header, &mask);
-	else
-		mask = (u64)-1;
-
-	if (list_empty(&ipc->rx_list)) {
-		dev_err(ipc->dev, "error: rx list empty but received 0x%llx\n",
-			header);
-		return NULL;
-	}
-
-	list_for_each_entry(msg, &ipc->rx_list, list) {
-		if ((msg->tx.header & mask) == header)
-			return msg;
-	}
-
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(sst_ipc_reply_find_msg);
-
-/* locks held by caller */
-void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc,
-	struct ipc_message *msg)
-{
-	msg->complete = true;
-
-	if (!msg->wait)
-		list_add_tail(&msg->list, &ipc->empty_list);
-	else
-		wake_up(&msg->waitq);
-}
-EXPORT_SYMBOL_GPL(sst_ipc_tx_msg_reply_complete);
-
-void sst_ipc_drop_all(struct sst_generic_ipc *ipc)
-{
-	struct ipc_message *msg, *tmp;
-	unsigned long flags;
-	int tx_drop_cnt = 0, rx_drop_cnt = 0;
-
-	/* drop all TX and Rx messages before we stall + reset DSP */
-	spin_lock_irqsave(&ipc->dsp->spinlock, flags);
-
-	list_for_each_entry_safe(msg, tmp, &ipc->tx_list, list) {
-		list_move(&msg->list, &ipc->empty_list);
-		tx_drop_cnt++;
-	}
-
-	list_for_each_entry_safe(msg, tmp, &ipc->rx_list, list) {
-		list_move(&msg->list, &ipc->empty_list);
-		rx_drop_cnt++;
-	}
-
-	spin_unlock_irqrestore(&ipc->dsp->spinlock, flags);
-
-	if (tx_drop_cnt || rx_drop_cnt)
-		dev_err(ipc->dev, "dropped IPC msg RX=%d, TX=%d\n",
-			tx_drop_cnt, rx_drop_cnt);
-}
-EXPORT_SYMBOL_GPL(sst_ipc_drop_all);
-
-int sst_ipc_init(struct sst_generic_ipc *ipc)
-{
-	int ret;
-
-	INIT_LIST_HEAD(&ipc->tx_list);
-	INIT_LIST_HEAD(&ipc->rx_list);
-	INIT_LIST_HEAD(&ipc->empty_list);
-	init_waitqueue_head(&ipc->wait_txq);
-
-	ret = msg_empty_list_init(ipc);
-	if (ret < 0)
-		return -ENOMEM;
-
-	INIT_WORK(&ipc->kwork, ipc_tx_msgs);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(sst_ipc_init);
-
-void sst_ipc_fini(struct sst_generic_ipc *ipc)
-{
-	int i;
-
-	cancel_work_sync(&ipc->kwork);
-
-	if (ipc->msg) {
-		for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
-			kfree(ipc->msg[i].tx.data);
-			kfree(ipc->msg[i].rx.data);
-		}
-		kfree(ipc->msg);
-	}
-}
-EXPORT_SYMBOL_GPL(sst_ipc_fini);
-
-/* Module information */
-MODULE_AUTHOR("Jin Yao");
-MODULE_DESCRIPTION("Intel SST IPC generic");
-MODULE_LICENSE("GPL v2");