1324 lines
33 KiB
C
1324 lines
33 KiB
C
/*
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* Freescale DSP driver
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*
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* Copyright (c) 2012-2013 by Tensilica Inc. ALL RIGHTS RESERVED.
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* Copyright 2018 NXP
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Copyright (c) 2001 William L. Pitts
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <linux/interrupt.h>
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#include <linux/file.h>
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#include <linux/of_platform.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/slab.h>
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#include <linux/platform_data/dma-imx.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/pm_runtime.h>
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#include <linux/pm_domain.h>
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#include <linux/mx8_mu.h>
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#include <linux/uaccess.h>
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#include <linux/poll.h>
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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#endif
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#include <uapi/linux/mxc_dsp.h>
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#include <linux/firmware/imx/svc/misc.h>
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#include <dt-bindings/firmware/imx/rsrc.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include "fsl_dsp.h"
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#include "fsl_dsp_pool.h"
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#include "fsl_dsp_xaf_api.h"
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/* ...allocate new client */
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struct xf_client *xf_client_alloc(struct fsl_dsp *dsp_priv)
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{
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struct xf_client *client;
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u32 id;
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id = dsp_priv->xf_client_map[0].next;
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/* ...try to allocate a client handle */
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if (id != 0) {
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/* ...allocate client memory */
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client = kmalloc(sizeof(*client), GFP_KERNEL);
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if (!client)
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return ERR_PTR(-ENOMEM);
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/* ...advance the head of free clients */
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dsp_priv->xf_client_map[0].next =
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dsp_priv->xf_client_map[id].next;
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/* ...put associate client id with given object */
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dsp_priv->xf_client_map[id].client = client;
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/* ...mark client is not yet bound to proxy */
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client->proxy = NULL;
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/* ...save global proxy client identifier */
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client->id = id;
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return client;
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}
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/* ...number of clients exceeded */
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return ERR_PTR(-EBUSY);
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}
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/* ...recycle client object */
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static inline void xf_client_free(struct xf_client *client)
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{
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int id = client->id;
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struct fsl_dsp *dsp_priv = (struct fsl_dsp *)client->global;
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/* ...put proxy client id into free clients list */
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dsp_priv->xf_client_map[id].next = dsp_priv->xf_client_map[0].next;
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dsp_priv->xf_client_map[0].next = id;
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/* ...destroy client data */
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kfree(client);
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}
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/* ...lookup client basing on id */
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struct xf_client *xf_client_lookup(struct fsl_dsp *dsp_priv, u32 id)
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{
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if ((id >= XF_CFG_MAX_IPC_CLIENTS) ||
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(dsp_priv->xf_client_map[id].next < XF_CFG_MAX_IPC_CLIENTS)
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)
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return NULL;
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else
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return dsp_priv->xf_client_map[id].client;
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}
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/* ...helper function for retrieving the client handle */
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static inline struct xf_client *xf_get_client(struct file *file)
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{
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struct xf_client *client;
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u32 id;
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client = (struct xf_client *)file->private_data;
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if (!client)
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return ERR_PTR(-EINVAL);
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id = client->id;
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if (id >= XF_CFG_MAX_IPC_CLIENTS)
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return ERR_PTR(-EINVAL);
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return client;
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}
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static int fsl_dsp_client_register(struct xf_client *client)
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{
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struct fsl_dsp *dsp_priv;
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struct device *dev;
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dsp_priv = (struct fsl_dsp *)client->global;
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dev = dsp_priv->dev;
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/* ...make sure client is not registered yet */
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if (client->proxy != NULL) {
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pr_err("client-%x already registered", client->id);
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return -EBUSY;
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}
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/* ...complete association (no communication with remote proxy here) */
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client->proxy = &dsp_priv->proxy;
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pr_debug("client-%x registered within proxy", client->id);
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return 0;
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}
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/* ...unregister client from shared memory interface */
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static int fsl_dsp_client_unregister(struct xf_client *client)
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{
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struct xf_proxy *proxy = client->proxy;
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/* ...make sure client is registered */
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if (proxy == NULL) {
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pr_err("client-%x is not registered", client->id);
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return -EBUSY;
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}
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/* ...just clean proxy reference */
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client->proxy = NULL;
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pr_debug("client-%x registered within proxy", client->id);
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return 0;
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}
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static int fsl_dsp_ipc_msg_to_dsp(struct xf_client *client,
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void __user *user)
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{
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struct fsl_dsp *dsp_priv = (struct fsl_dsp *)client->global;
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struct device *dev = dsp_priv->dev;
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struct xf_proxy_message msg;
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void *buffer;
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unsigned long ret = 0;
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ret = copy_from_user(&msg, user, sizeof(struct xf_proxy_message));
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if (ret) {
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dev_err(dev, "failed to get message from user space\n");
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return -EFAULT;
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}
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/* ...make sure message pointer is sane */
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buffer = xf_proxy_a2b(&dsp_priv->proxy, msg.address);
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if (buffer == (void *)-1)
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return -EFAULT;
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/* ...put current proxy client into message session id */
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msg.session_id = XF_MSG_AP_FROM_USER(msg.session_id, client->id);
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xf_cmd_send(&dsp_priv->proxy,
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msg.session_id,
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msg.opcode,
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buffer,
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msg.length);
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return 0;
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}
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static int fsl_dsp_ipc_msg_from_dsp(struct xf_client *client,
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void __user *user)
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{
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struct fsl_dsp *dsp_priv = (struct fsl_dsp *)client->global;
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struct device *dev = dsp_priv->dev;
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struct xf_message *m;
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struct xf_proxy_message msg;
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unsigned long ret = 0;
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m = xf_cmd_recv(&dsp_priv->proxy, &client->wait, &client->queue, 0);
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if (IS_ERR(m)) {
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xf_unlock(&dsp_priv->proxy.lock);
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dev_err(dev, "receiving failed: %d", (int)PTR_ERR(m));
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return PTR_ERR(m);
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}
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/* ...check if there is a response available */
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if (m == NULL)
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return -EAGAIN;
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/* ...prepare message parameters (lock is taken) */
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msg.session_id = XF_MSG_AP_TO_USER(m->id);
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msg.opcode = m->opcode;
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msg.length = m->length;
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msg.address = xf_proxy_b2a(&dsp_priv->proxy, m->buffer);
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msg.ret = m->ret;
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/* ...return the message back to a pool and release lock */
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xf_msg_free(&dsp_priv->proxy, m);
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xf_unlock(&dsp_priv->proxy.lock);
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ret = copy_to_user(user, &msg, sizeof(struct xf_proxy_message));
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if (ret) {
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dev_err(dev, "failed to response message to user space\n");
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return -EFAULT;
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}
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return 0;
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}
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static int fsl_dsp_get_shmem_info(struct xf_client *client,
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void __user *user)
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{
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struct fsl_dsp *dsp_priv = (struct fsl_dsp *)client->global;
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struct device *dev = dsp_priv->dev;
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struct shmem_info mem_info;
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unsigned long ret = 0;
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mem_info.phys_addr = dsp_priv->scratch_buf_phys;
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mem_info.size = dsp_priv->scratch_buf_size;
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ret = copy_to_user(user, &mem_info, sizeof(struct shmem_info));
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if (ret) {
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dev_err(dev, "failed to response message to user space\n");
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return -EFAULT;
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}
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return ret;
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}
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static struct miscdevice dsp_miscdev = {
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.name = "mxc_hifi4",
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.minor = MISC_DYNAMIC_MINOR,
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};
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static long fsl_dsp_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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struct xf_client *client;
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struct fsl_dsp *dsp_priv;
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struct xf_proxy *proxy;
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struct device *dev;
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void __user *user;
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long ret = 0;
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/* ...basic sanity checks */
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client = xf_get_client(file);
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if (IS_ERR(client))
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return PTR_ERR(client);
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dsp_priv = (struct fsl_dsp *)client->global;
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proxy = &dsp_priv->proxy;
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dev = dsp_priv->dev;
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user = (void __user *)arg;
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mutex_lock(&dsp_priv->dsp_mutex);
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if (!proxy->is_ready) {
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mutex_unlock(&dsp_priv->dsp_mutex);
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dev_err(dev, "dsp firmware is not ready\n");
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return -EFAULT;
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}
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switch (cmd) {
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case DSP_CLIENT_REGISTER:
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ret = fsl_dsp_client_register(client);
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break;
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case DSP_CLIENT_UNREGISTER:
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ret = fsl_dsp_client_unregister(client);
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break;
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case DSP_IPC_MSG_SEND:
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ret = fsl_dsp_ipc_msg_to_dsp(client, user);
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break;
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case DSP_IPC_MSG_RECV:
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ret = fsl_dsp_ipc_msg_from_dsp(client, user);
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break;
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case DSP_GET_SHMEM_INFO:
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ret = fsl_dsp_get_shmem_info(client, user);
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break;
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default:
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break;
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}
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mutex_unlock(&dsp_priv->dsp_mutex);
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return ret;
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}
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void resource_release(struct fsl_dsp *dsp_priv)
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{
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int i;
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/* ...initialize client association map */
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for (i = 0; i < XF_CFG_MAX_IPC_CLIENTS - 1; i++)
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dsp_priv->xf_client_map[i].next = i + 1;
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/* ...set list terminator */
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dsp_priv->xf_client_map[i].next = 0;
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/* ...set pointer to shared memory */
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xf_proxy_init(&dsp_priv->proxy);
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}
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int fsl_dsp_open_func(struct fsl_dsp *dsp_priv, struct xf_client *client)
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{
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struct device *dev = dsp_priv->dev;
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int ret = 0;
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/* ...initialize waiting queue */
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init_waitqueue_head(&client->wait);
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/* ...initialize client pending message queue */
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xf_msg_queue_init(&client->queue);
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/* ...mark user data is not mapped */
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client->vm_start = 0;
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/* ...reset mappings counter */
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atomic_set(&client->vm_use, 0);
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client->global = (void *)dsp_priv;
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dsp_priv->proxy.is_active = 1;
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pm_runtime_get_sync(dev);
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mutex_lock(&dsp_priv->dsp_mutex);
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/* increase reference counter when opening device */
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atomic_long_inc(&dsp_priv->refcnt);
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mutex_unlock(&dsp_priv->dsp_mutex);
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return ret;
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}
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static int fsl_dsp_open(struct inode *inode, struct file *file)
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{
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struct fsl_dsp *dsp_priv = dev_get_drvdata(dsp_miscdev.parent);
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struct xf_client *client;
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int ret = 0;
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/* ...basic sanity checks */
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if (!inode || !file)
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return -EINVAL;
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/* ...allocate new proxy client object */
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client = xf_client_alloc(dsp_priv);
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if (IS_ERR(client))
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return PTR_ERR(client);
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fsl_dsp_open_func(dsp_priv, client);
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file->private_data = (void *)client;
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return ret;
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}
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int fsl_dsp_close_func(struct xf_client *client)
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{
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struct fsl_dsp *dsp_priv;
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struct device *dev;
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struct xf_proxy *proxy;
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/* ...basic sanity checks */
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proxy = client->proxy;
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/* release all pending messages */
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if (proxy)
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xf_msg_free_all(proxy, &client->queue);
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dsp_priv = (struct fsl_dsp *)client->global;
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dev = dsp_priv->dev;
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pm_runtime_put_sync(dev);
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/* ...recycle client id and release memory */
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xf_client_free(client);
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mutex_lock(&dsp_priv->dsp_mutex);
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/* decrease reference counter when closing device */
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atomic_long_dec(&dsp_priv->refcnt);
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/* If device is free, reinitialize the resource of
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* dsp driver and framework
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*/
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if (atomic_long_read(&dsp_priv->refcnt) <= 0) {
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/* we are closing up, wait for proxy processing
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* function to finish */
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cancel_work_sync(&dsp_priv->proxy.work);
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resource_release(dsp_priv);
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}
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mutex_unlock(&dsp_priv->dsp_mutex);
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return 0;
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}
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static int fsl_dsp_close(struct inode *inode, struct file *file)
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{
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struct xf_client *client;
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/* ...basic sanity checks */
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client = xf_get_client(file);
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if (IS_ERR(client))
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return PTR_ERR(client);
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fsl_dsp_close_func(client);
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return 0;
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}
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/* ...wait until data is available in the response queue */
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static unsigned int fsl_dsp_poll(struct file *file, poll_table *wait)
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{
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struct xf_proxy *proxy;
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struct xf_client *client;
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int mask;
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/* ...basic sanity checks */
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client = xf_get_client(file);
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if (IS_ERR(client))
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return PTR_ERR(client);
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/* ...get proxy interface */
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proxy = client->proxy;
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if (!proxy)
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return -EPERM;
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/* ...register client waiting queue */
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poll_wait(file, &client->wait, wait);
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/* ...return current queue state */
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mask = (xf_msg_queue_head(&client->queue) ? POLLIN | POLLRDNORM : 0);
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return mask;
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}
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/*******************************************************************************
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* Low-level mmap interface
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******************************************************************************/
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/* ...add reference to shared buffer */
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static void dsp_mmap_open(struct vm_area_struct *vma)
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{
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struct xf_client *client = vma->vm_private_data;
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/* ...probably just increase counter of open references? - tbd */
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atomic_inc(&client->vm_use);
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pr_debug("xf_mmap_open: vma = %p, client = %p", vma, client);
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}
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/* ...close reference to shared buffer */
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static void dsp_mmap_close(struct vm_area_struct *vma)
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{
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struct xf_client *client = vma->vm_private_data;
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pr_debug("xf_mmap_close: vma = %p, b = %p", vma, client);
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/* ...decrement number of mapping */
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atomic_dec(&client->vm_use);
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}
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/* ...memory map operations */
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static const struct vm_operations_struct dsp_mmap_ops = {
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.open = dsp_mmap_open,
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.close = dsp_mmap_close,
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};
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/* ...shared memory mapping */
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static int fsl_dsp_mmap(struct file *file, struct vm_area_struct *vma)
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{
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struct xf_proxy *proxy;
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struct xf_client *client;
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unsigned long size;
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unsigned long pfn;
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int r;
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struct fsl_dsp *dsp_priv;
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/* ...basic sanity checks */
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client = xf_get_client(file);
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if (IS_ERR(client))
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return PTR_ERR(client);
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|
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/* ...get proxy interface */
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proxy = client->proxy;
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if (!proxy)
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|
return -EPERM;
|
|
|
|
/* ...check it was not mapped already */
|
|
if (client->vm_start != 0)
|
|
return -EBUSY;
|
|
|
|
/* ...check mapping flags (tbd) */
|
|
if ((vma->vm_flags & (VM_READ | VM_WRITE | VM_SHARED))
|
|
!= (VM_READ | VM_WRITE | VM_SHARED))
|
|
return -EPERM;
|
|
|
|
/* ...set memory map operations */
|
|
vma->vm_ops = &dsp_mmap_ops;
|
|
|
|
/* ...assign private data */
|
|
client->vm_start = vma->vm_start;
|
|
|
|
/* ...set private memory data */
|
|
vma->vm_private_data = client;
|
|
|
|
/* ...set page number of shared memory */
|
|
dsp_priv = (struct fsl_dsp *)client->global;
|
|
pfn = dsp_priv->scratch_buf_phys >> PAGE_SHIFT;
|
|
size = dsp_priv->scratch_buf_size;
|
|
|
|
/* ...remap shared memory to user-space */
|
|
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
|
|
r = remap_pfn_range(vma, vma->vm_start, pfn, size, vma->vm_page_prot);
|
|
if (r != 0) {
|
|
pr_err("mapping failed: %d", r);
|
|
return r;
|
|
}
|
|
|
|
/* ...system-specific hook for registering shared memory mapping */
|
|
return 0;
|
|
}
|
|
|
|
void *memset_dsp(void *dest, int c, size_t count)
|
|
{
|
|
uint *dl = (uint *)dest;
|
|
void *dl_1, *dl_2;
|
|
size_t align = 4;
|
|
size_t n, n1, n2;
|
|
|
|
/* while all data is aligned (common case), copy a word at a time */
|
|
if ((((ulong)dest) & (sizeof(*dl) - 1)) != 0) {
|
|
dl = (unsigned int *)(((ulong)dest + align - 1) &
|
|
(~(align - 1)));
|
|
dl_1 = dest;
|
|
dl_2 = (void *)(((ulong)dest + count) & (~(align - 1)));
|
|
n1 = (ulong)dl - (ulong)dl_1;
|
|
n2 = (ulong)dest + count - (ulong)dl_2;
|
|
n = (count - n1 - n2) / align;
|
|
|
|
while (n--) {
|
|
writel_relaxed(0, dl);
|
|
dl++;
|
|
}
|
|
while (n1--) {
|
|
writeb_relaxed(0, dl_1);
|
|
dl_1++;
|
|
}
|
|
while (n2--) {
|
|
writeb_relaxed(0, dl_2);
|
|
dl_2++;
|
|
}
|
|
} else {
|
|
n = count / align;
|
|
n1 = count - n * align;
|
|
dl_1 = dest + n * align;
|
|
while (n--) {
|
|
writel_relaxed(0, dl);
|
|
dl++;
|
|
}
|
|
while (n1--) {
|
|
writeb_relaxed(0, dl_1);
|
|
dl_1++;
|
|
}
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
void *memcpy_dsp(void *dest, const void *src, size_t count)
|
|
{
|
|
unsigned int *dl = (unsigned int *)dest, *sl = (unsigned int *)src;
|
|
size_t n = round_up(count, 4) / 4;
|
|
|
|
if (src == dest)
|
|
return dest;
|
|
|
|
/* while all data is aligned (common case), copy a word at a time */
|
|
if ((((ulong)dest | (ulong)src) & (sizeof(*dl) - 1)) != 0)
|
|
pr_info("dest %p src %p not 4 bytes aligned\n", dest, src);
|
|
|
|
while (n--) {
|
|
writel_relaxed(*sl, dl);
|
|
dl++;
|
|
sl++;
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
static void fsl_dsp_start(struct fsl_dsp *dsp_priv)
|
|
{
|
|
switch (dsp_priv->dsp_board_type){
|
|
case DSP_IMX8QM_TYPE:
|
|
case DSP_IMX8QXP_TYPE:
|
|
imx_sc_pm_cpu_start(dsp_priv->dsp_ipcHandle,
|
|
IMX_SC_R_DSP, true, dsp_priv->iram);
|
|
break;
|
|
case DSP_IMX8MP_TYPE:
|
|
imx_audiomix_dsp_start(dsp_priv->audiomix);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void dsp_load_firmware(const struct firmware *fw, void *context)
|
|
{
|
|
struct fsl_dsp *dsp_priv = context;
|
|
struct device *dev = dsp_priv->dev;
|
|
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
|
|
Elf32_Shdr *shdr; /* Section header structure pointer */
|
|
Elf32_Addr sh_addr;
|
|
unsigned char *strtab = 0; /* String table pointer */
|
|
unsigned char *image; /* Binary image pointer */
|
|
int i; /* Loop counter */
|
|
unsigned long addr;
|
|
|
|
if (!fw) {
|
|
dev_info(dev, "external firmware not found\n");
|
|
return;
|
|
}
|
|
|
|
addr = (unsigned long)fw->data;
|
|
ehdr = (Elf32_Ehdr *)addr;
|
|
|
|
/* Find the section header string table for output info */
|
|
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
|
(ehdr->e_shstrndx * sizeof(Elf32_Shdr)));
|
|
|
|
strtab = (unsigned char *)(addr + shdr->sh_offset);
|
|
|
|
/* Load each appropriate section */
|
|
for (i = 0; i < ehdr->e_shnum; ++i) {
|
|
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
|
(i * sizeof(Elf32_Shdr)));
|
|
|
|
if (!(shdr->sh_flags & SHF_ALLOC) ||
|
|
shdr->sh_addr == 0 || shdr->sh_size == 0)
|
|
continue;
|
|
|
|
dev_dbg(dev, "%sing %s @ 0x%08lx (%ld bytes)\n",
|
|
(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
|
|
&strtab[shdr->sh_name], (unsigned long)shdr->sh_addr,
|
|
(long)shdr->sh_size);
|
|
|
|
sh_addr = shdr->sh_addr;
|
|
|
|
if (shdr->sh_type == SHT_NOBITS) {
|
|
memset_dsp((void *)(dsp_priv->sdram_vir_addr +
|
|
(sh_addr - dsp_priv->sdram_phys_addr)),
|
|
0,
|
|
shdr->sh_size);
|
|
} else {
|
|
image = (unsigned char *)addr + shdr->sh_offset;
|
|
if ((!strcmp(&strtab[shdr->sh_name], ".rodata")) ||
|
|
(!strcmp(&strtab[shdr->sh_name], ".text")) ||
|
|
(!strcmp(&strtab[shdr->sh_name], ".data")) ||
|
|
(!strcmp(&strtab[shdr->sh_name], ".bss"))
|
|
) {
|
|
memcpy_dsp((void *)(dsp_priv->sdram_vir_addr
|
|
+ (sh_addr - dsp_priv->sdram_phys_addr)),
|
|
(const void *)image,
|
|
shdr->sh_size);
|
|
} else {
|
|
/* sh_addr is from DSP view, we need to
|
|
* fixup addr because we load the firmware from
|
|
* the ARM core side
|
|
*/
|
|
sh_addr -= dsp_priv->fixup_offset;
|
|
|
|
memcpy_dsp((void *)(dsp_priv->regs +
|
|
(sh_addr - dsp_priv->paddr)),
|
|
(const void *)image,
|
|
shdr->sh_size);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* start the core */
|
|
fsl_dsp_start(dsp_priv);
|
|
}
|
|
|
|
/* Initialization of the MU code. */
|
|
int dsp_mu_init(struct fsl_dsp *dsp_priv)
|
|
{
|
|
struct device *dev = dsp_priv->dev;
|
|
struct device_node *np;
|
|
unsigned int dsp_mu_id;
|
|
u32 irq;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* Get the address of MU to be used for communication with the dsp
|
|
*/
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,imx8-mu-dsp");
|
|
if (!np) {
|
|
dev_err(dev, "Cannot find MU entry in device tree\n");
|
|
return -EINVAL;
|
|
}
|
|
dsp_priv->mu_base_virtaddr = of_iomap(np, 0);
|
|
WARN_ON(!dsp_priv->mu_base_virtaddr);
|
|
|
|
ret = of_property_read_u32_index(np,
|
|
"fsl,dsp_ap_mu_id", 0, &dsp_mu_id);
|
|
if (ret) {
|
|
dev_err(dev, "Cannot get mu_id %d\n", ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dsp_priv->dsp_mu_id = dsp_mu_id;
|
|
|
|
irq = of_irq_get(np, 0);
|
|
|
|
ret = devm_request_irq(dsp_priv->dev, irq, fsl_dsp_mu_isr,
|
|
IRQF_EARLY_RESUME, "dsp_mu_isr", &dsp_priv->proxy);
|
|
if (ret) {
|
|
dev_err(dev, "request_irq failed %d, err = %d\n", irq, ret);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations dsp_fops = {
|
|
.owner = THIS_MODULE,
|
|
.unlocked_ioctl = fsl_dsp_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = fsl_dsp_ioctl,
|
|
#endif
|
|
.open = fsl_dsp_open,
|
|
.poll = fsl_dsp_poll,
|
|
.mmap = fsl_dsp_mmap,
|
|
.release = fsl_dsp_close,
|
|
};
|
|
|
|
extern struct snd_compr_ops dsp_platform_compr_ops;
|
|
|
|
static const struct snd_soc_component_driver dsp_soc_platform_drv = {
|
|
.name = FSL_DSP_COMP_NAME,
|
|
.compr_ops = &dsp_platform_compr_ops,
|
|
};
|
|
|
|
|
|
int fsl_dsp_configure_audmix(struct fsl_dsp *dsp_priv) {
|
|
struct device_node *np;
|
|
struct platform_device *pdev;
|
|
|
|
np = of_find_node_by_name(NULL, "audiomix_dsp");
|
|
if (!np)
|
|
return -EPROBE_DEFER;
|
|
|
|
pdev = of_find_device_by_node(np);
|
|
if (!pdev)
|
|
return -EPROBE_DEFER;
|
|
|
|
dsp_priv->audiomix = dev_get_drvdata(&pdev->dev);
|
|
if (!dsp_priv->audiomix)
|
|
return -EPROBE_DEFER;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fsl_dsp_configure_scu(struct fsl_dsp *dsp_priv)
|
|
{
|
|
int ret;
|
|
|
|
/* there is no SCU on i.MX8MP */
|
|
if (dsp_priv->dsp_board_type == DSP_IMX8MP_TYPE)
|
|
return 0;
|
|
|
|
ret = imx_scu_get_handle(&dsp_priv->dsp_ipcHandle);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Cannot get scu handle %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (dsp_priv->dsp_board_type == DSP_IMX8QXP_TYPE) {
|
|
ret = imx_sc_misc_set_control(dsp_priv->dsp_ipcHandle, IMX_SC_R_DSP,
|
|
IMX_SC_C_OFS_SEL, 1);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Error system address offset source select\n");
|
|
return -EIO;
|
|
}
|
|
|
|
ret = imx_sc_misc_set_control(dsp_priv->dsp_ipcHandle, IMX_SC_R_DSP,
|
|
IMX_SC_C_OFS_PERIPH, 0x5A);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Error system address offset of PERIPH %d\n",
|
|
ret);
|
|
return -EIO;
|
|
}
|
|
|
|
ret = imx_sc_misc_set_control(dsp_priv->dsp_ipcHandle, IMX_SC_R_DSP,
|
|
IMX_SC_C_OFS_IRQ, 0x51);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Error system address offset of IRQ\n");
|
|
return -EIO;
|
|
}
|
|
|
|
ret = imx_sc_misc_set_control(dsp_priv->dsp_ipcHandle, IMX_SC_R_DSP,
|
|
IMX_SC_C_OFS_AUDIO, 0x80);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Error system address offset of AUDIO\n");
|
|
return -EIO;
|
|
}
|
|
} else {
|
|
ret = imx_sc_misc_set_control(dsp_priv->dsp_ipcHandle, IMX_SC_R_DSP,
|
|
IMX_SC_C_OFS_SEL, 0);
|
|
if (ret) {
|
|
dev_err(dsp_priv->dev, "Error system address offset source select\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fsl_dsp_configure(struct fsl_dsp *dsp_priv)
|
|
{
|
|
switch (dsp_priv->dsp_board_type) {
|
|
case DSP_IMX8QM_TYPE:
|
|
case DSP_IMX8QXP_TYPE:
|
|
return fsl_dsp_configure_scu(dsp_priv);
|
|
case DSP_IMX8MP_TYPE:
|
|
return fsl_dsp_configure_audmix(dsp_priv);
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
static int fsl_dsp_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
struct device_node *reserved_node;
|
|
struct resource reserved_res;
|
|
struct fsl_dsp *dsp_priv;
|
|
const char *fw_name;
|
|
struct resource *res;
|
|
void __iomem *regs;
|
|
void *buf_virt;
|
|
dma_addr_t buf_phys;
|
|
int size, offset, i;
|
|
int ret;
|
|
int num_domains = 0;
|
|
char tmp[16];
|
|
|
|
dsp_priv = devm_kzalloc(&pdev->dev, sizeof(*dsp_priv), GFP_KERNEL);
|
|
if (!dsp_priv)
|
|
return -ENOMEM;
|
|
|
|
if (of_device_is_compatible(np, "fsl,imx8qxp-dsp-v1"))
|
|
dsp_priv->dsp_board_type = DSP_IMX8QXP_TYPE;
|
|
else if (of_device_is_compatible(np, "fsl,imx8qm-dsp-v1"))
|
|
dsp_priv->dsp_board_type = DSP_IMX8QM_TYPE;
|
|
else
|
|
dsp_priv->dsp_board_type = DSP_IMX8MP_TYPE;
|
|
|
|
dsp_priv->dev = &pdev->dev;
|
|
|
|
/* Get the addresses and IRQ */
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(regs))
|
|
return PTR_ERR(regs);
|
|
|
|
dsp_priv->paddr = res->start;
|
|
dsp_priv->regs = regs;
|
|
|
|
dsp_priv->dram0 = dsp_priv->paddr + DRAM0_OFFSET;
|
|
dsp_priv->dram1 = dsp_priv->paddr + DRAM1_OFFSET;
|
|
dsp_priv->iram = dsp_priv->paddr + IRAM_OFFSET;
|
|
dsp_priv->sram = dsp_priv->paddr + SYSRAM_OFFSET;
|
|
|
|
num_domains = of_count_phandle_with_args(np, "power-domains",
|
|
"#power-domain-cells");
|
|
if (num_domains > 1) {
|
|
for (i = 0; i < num_domains; i++) {
|
|
struct device *pd_dev;
|
|
struct device_link *link;
|
|
|
|
pd_dev = dev_pm_domain_attach_by_id(&pdev->dev, i);
|
|
if (IS_ERR(pd_dev))
|
|
return PTR_ERR(pd_dev);
|
|
|
|
link = device_link_add(&pdev->dev, pd_dev,
|
|
DL_FLAG_STATELESS |
|
|
DL_FLAG_PM_RUNTIME |
|
|
DL_FLAG_RPM_ACTIVE);
|
|
if (IS_ERR(link))
|
|
return PTR_ERR(link);
|
|
}
|
|
}
|
|
|
|
ret = fsl_dsp_configure(dsp_priv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = dsp_mu_init(dsp_priv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = of_property_read_string(np, "fsl,dsp-firmware", &fw_name);
|
|
dsp_priv->fw_name = fw_name;
|
|
|
|
ret = of_property_read_u32(np, "fixup-offset", &dsp_priv->fixup_offset);
|
|
|
|
platform_set_drvdata(pdev, dsp_priv);
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
dsp_miscdev.fops = &dsp_fops,
|
|
dsp_miscdev.parent = &pdev->dev,
|
|
ret = misc_register(&dsp_miscdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register misc device %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
reserved_node = of_parse_phandle(np, "memory-region", 0);
|
|
if (!reserved_node) {
|
|
dev_err(&pdev->dev, "failed to get reserved region node\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (of_address_to_resource(reserved_node, 0, &reserved_res)) {
|
|
dev_err(&pdev->dev, "failed to get reserved region address\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dsp_priv->sdram_phys_addr = reserved_res.start;
|
|
dsp_priv->sdram_reserved_size = (reserved_res.end - reserved_res.start)
|
|
+ 1;
|
|
if (dsp_priv->sdram_reserved_size <= 0) {
|
|
dev_err(&pdev->dev, "invalid value of reserved region size\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dsp_priv->sdram_vir_addr = ioremap_wc(dsp_priv->sdram_phys_addr,
|
|
dsp_priv->sdram_reserved_size);
|
|
if (!dsp_priv->sdram_vir_addr) {
|
|
dev_err(&pdev->dev, "failed to remap sdram space for dsp firmware\n");
|
|
return -ENXIO;
|
|
}
|
|
memset_io(dsp_priv->sdram_vir_addr, 0, dsp_priv->sdram_reserved_size);
|
|
|
|
size = MSG_BUF_SIZE + DSP_CONFIG_SIZE;
|
|
|
|
buf_virt = dma_alloc_coherent(&pdev->dev, size, &buf_phys, GFP_KERNEL);
|
|
if (!buf_virt) {
|
|
dev_err(&pdev->dev, "failed alloc memory.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* msg ring buffer memory */
|
|
dsp_priv->msg_buf_virt = buf_virt;
|
|
dsp_priv->msg_buf_phys = buf_phys;
|
|
dsp_priv->msg_buf_size = MSG_BUF_SIZE;
|
|
offset = MSG_BUF_SIZE;
|
|
|
|
/* keep dsp framework's global data when suspend/resume */
|
|
dsp_priv->dsp_config_virt = buf_virt + offset;
|
|
dsp_priv->dsp_config_phys = buf_phys + offset;
|
|
dsp_priv->dsp_config_size = DSP_CONFIG_SIZE;
|
|
|
|
/* scratch memory for dsp framework. The sdram reserved memory
|
|
* is split into two equal parts currently. The front part is
|
|
* used to keep the dsp firmware, the other part is considered
|
|
* as scratch memory for dsp framework.
|
|
*/
|
|
dsp_priv->scratch_buf_virt = dsp_priv->sdram_vir_addr +
|
|
dsp_priv->sdram_reserved_size / 2;
|
|
dsp_priv->scratch_buf_phys = dsp_priv->sdram_phys_addr +
|
|
dsp_priv->sdram_reserved_size / 2;
|
|
dsp_priv->scratch_buf_size = dsp_priv->sdram_reserved_size / 2;
|
|
|
|
/* initialize the reference counter for dsp_priv
|
|
* structure
|
|
*/
|
|
atomic_long_set(&dsp_priv->refcnt, 0);
|
|
|
|
/* ...initialize client association map */
|
|
for (i = 0; i < XF_CFG_MAX_IPC_CLIENTS - 1; i++)
|
|
dsp_priv->xf_client_map[i].next = i + 1;
|
|
/* ...set list terminator */
|
|
dsp_priv->xf_client_map[i].next = 0;
|
|
|
|
/* ...set pointer to shared memory */
|
|
xf_proxy_init(&dsp_priv->proxy);
|
|
|
|
/* ...initialize mutex */
|
|
mutex_init(&dsp_priv->dsp_mutex);
|
|
|
|
ret = devm_snd_soc_register_component(&pdev->dev, &dsp_soc_platform_drv, NULL, 0);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "registering soc platform failed\n");
|
|
return ret;
|
|
}
|
|
|
|
dsp_priv->esai_ipg_clk = devm_clk_get(&pdev->dev, "esai_ipg");
|
|
if (IS_ERR(dsp_priv->esai_ipg_clk))
|
|
dsp_priv->esai_ipg_clk = NULL;
|
|
|
|
dsp_priv->esai_mclk = devm_clk_get(&pdev->dev, "esai_mclk");
|
|
if (IS_ERR(dsp_priv->esai_mclk))
|
|
dsp_priv->esai_mclk = NULL;
|
|
|
|
dsp_priv->asrc_mem_clk = devm_clk_get(&pdev->dev, "asrc_mem");
|
|
if (IS_ERR(dsp_priv->asrc_mem_clk))
|
|
dsp_priv->asrc_mem_clk = NULL;
|
|
|
|
dsp_priv->asrc_ipg_clk = devm_clk_get(&pdev->dev, "asrc_ipg");
|
|
if (IS_ERR(dsp_priv->asrc_ipg_clk))
|
|
dsp_priv->asrc_ipg_clk = NULL;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
sprintf(tmp, "asrck_%x", i);
|
|
dsp_priv->asrck_clk[i] = devm_clk_get(&pdev->dev, tmp);
|
|
if (IS_ERR(dsp_priv->asrck_clk[i]))
|
|
dsp_priv->asrck_clk[i] = NULL;
|
|
}
|
|
|
|
dsp_priv->dsp_ocrama_clk = devm_clk_get(&pdev->dev, "ocram");
|
|
if (IS_ERR(dsp_priv->dsp_ocrama_clk))
|
|
dsp_priv->dsp_ocrama_clk = NULL;
|
|
|
|
dsp_priv->dsp_root_clk = devm_clk_get(&pdev->dev, "core");
|
|
if (IS_ERR(dsp_priv->dsp_root_clk))
|
|
dsp_priv->dsp_root_clk = NULL;
|
|
|
|
dsp_priv->debug_clk = devm_clk_get(&pdev->dev, "debug");
|
|
if (IS_ERR(dsp_priv->debug_clk))
|
|
dsp_priv->debug_clk = NULL;
|
|
|
|
dsp_priv->mu2_clk = devm_clk_get(&pdev->dev, "mu2");
|
|
if (IS_ERR(dsp_priv->mu2_clk))
|
|
dsp_priv->mu2_clk = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_dsp_remove(struct platform_device *pdev)
|
|
{
|
|
struct fsl_dsp *dsp_priv = platform_get_drvdata(pdev);
|
|
int size;
|
|
|
|
misc_deregister(&dsp_miscdev);
|
|
|
|
size = MSG_BUF_SIZE + DSP_CONFIG_SIZE;
|
|
dma_free_coherent(&pdev->dev, size, dsp_priv->msg_buf_virt,
|
|
dsp_priv->msg_buf_phys);
|
|
if (dsp_priv->sdram_vir_addr)
|
|
iounmap(dsp_priv->sdram_vir_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int fsl_dsp_runtime_resume(struct device *dev)
|
|
{
|
|
struct fsl_dsp *dsp_priv = dev_get_drvdata(dev);
|
|
struct xf_proxy *proxy = &dsp_priv->proxy;
|
|
int ret;
|
|
int i;
|
|
|
|
ret = clk_prepare_enable(dsp_priv->esai_ipg_clk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable esai ipg clock: %d\n", ret);
|
|
goto esai_ipg_clk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->esai_mclk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable esai mclk: %d\n", ret);
|
|
goto esai_mclk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->asrc_mem_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable asrc_mem_clk ret = %d\n", ret);
|
|
goto asrc_mem_clk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->asrc_ipg_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable asrc_ipg_clk ret = %d\n", ret);
|
|
goto asrc_ipg_clk;
|
|
}
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
ret = clk_prepare_enable(dsp_priv->asrck_clk[i]);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to prepare arc clk %d\n", i);
|
|
goto asrck_clk;
|
|
}
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->dsp_ocrama_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable dsp_ocrama_clk ret = %d\n", ret);
|
|
goto ocrama_clk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->dsp_root_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable dsp_root_clk ret = %d\n", ret);
|
|
goto dsp_root_clk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->debug_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable debug_clk ret = %d\n", ret);
|
|
goto debug_clk;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsp_priv->mu2_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable mu2_clk ret = %d\n", ret);
|
|
goto mu2_clk;
|
|
}
|
|
|
|
if (!dsp_priv->dsp_mu_init) {
|
|
MU_Init(dsp_priv->mu_base_virtaddr);
|
|
MU_EnableRxFullInt(dsp_priv->mu_base_virtaddr, 0);
|
|
dsp_priv->dsp_mu_init = 1;
|
|
}
|
|
|
|
if (!proxy->is_ready) {
|
|
init_completion(&proxy->cmd_complete);
|
|
|
|
ret = request_firmware_nowait(THIS_MODULE,
|
|
FW_ACTION_HOTPLUG, dsp_priv->fw_name,
|
|
dev,
|
|
GFP_KERNEL, dsp_priv, dsp_load_firmware);
|
|
|
|
if (ret) {
|
|
dev_err(dev, "failed to load firmware\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = icm_ack_wait(proxy, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dev_info(dev, "dsp driver registered\n");
|
|
}
|
|
|
|
return 0;
|
|
|
|
mu2_clk:
|
|
clk_disable_unprepare(dsp_priv->debug_clk);
|
|
debug_clk:
|
|
clk_disable_unprepare(dsp_priv->dsp_root_clk);
|
|
dsp_root_clk:
|
|
clk_disable_unprepare(dsp_priv->dsp_ocrama_clk);
|
|
ocrama_clk:
|
|
for (i = 0; i < 4; i++)
|
|
clk_disable_unprepare(dsp_priv->asrck_clk[i]);
|
|
asrck_clk:
|
|
clk_disable_unprepare(dsp_priv->asrc_ipg_clk);
|
|
asrc_ipg_clk:
|
|
clk_disable_unprepare(dsp_priv->asrc_mem_clk);
|
|
asrc_mem_clk:
|
|
clk_disable_unprepare(dsp_priv->esai_mclk);
|
|
esai_mclk:
|
|
clk_disable_unprepare(dsp_priv->esai_ipg_clk);
|
|
esai_ipg_clk:
|
|
return ret;
|
|
}
|
|
|
|
static int fsl_dsp_runtime_suspend(struct device *dev)
|
|
{
|
|
struct fsl_dsp *dsp_priv = dev_get_drvdata(dev);
|
|
struct xf_proxy *proxy = &dsp_priv->proxy;
|
|
int i;
|
|
|
|
/*
|
|
* FIXME:
|
|
* DSP in i.MX865 don't have dedicate power control
|
|
* which bind with audiomix. if the audiomix power
|
|
* on, we can't reload the firmware.
|
|
*/
|
|
if (dsp_priv->dsp_board_type != DSP_IMX8MP_TYPE) {
|
|
dsp_priv->dsp_mu_init = 0;
|
|
proxy->is_ready = 0;
|
|
}
|
|
|
|
for (i = 0; i < 4; i++)
|
|
clk_disable_unprepare(dsp_priv->asrck_clk[i]);
|
|
|
|
clk_disable_unprepare(dsp_priv->asrc_ipg_clk);
|
|
clk_disable_unprepare(dsp_priv->asrc_mem_clk);
|
|
|
|
clk_disable_unprepare(dsp_priv->esai_mclk);
|
|
clk_disable_unprepare(dsp_priv->esai_ipg_clk);
|
|
|
|
clk_disable_unprepare(dsp_priv->dsp_ocrama_clk);
|
|
clk_disable_unprepare(dsp_priv->dsp_root_clk);
|
|
clk_disable_unprepare(dsp_priv->debug_clk);
|
|
clk_disable_unprepare(dsp_priv->mu2_clk);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int fsl_dsp_suspend(struct device *dev)
|
|
{
|
|
struct fsl_dsp *dsp_priv = dev_get_drvdata(dev);
|
|
struct xf_proxy *proxy = &dsp_priv->proxy;
|
|
int ret = 0;
|
|
|
|
if (proxy->is_ready) {
|
|
ret = xf_cmd_send_suspend(proxy);
|
|
if (ret) {
|
|
dev_err(dev, "dsp suspend fail\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = pm_runtime_force_suspend(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fsl_dsp_resume(struct device *dev)
|
|
{
|
|
struct fsl_dsp *dsp_priv = dev_get_drvdata(dev);
|
|
struct xf_proxy *proxy = &dsp_priv->proxy;
|
|
int ret = 0;
|
|
|
|
ret = pm_runtime_force_resume(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (proxy->is_ready) {
|
|
ret = xf_cmd_send_resume(proxy);
|
|
if (ret) {
|
|
dev_err(dev, "dsp resume fail\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static const struct dev_pm_ops fsl_dsp_pm = {
|
|
SET_RUNTIME_PM_OPS(fsl_dsp_runtime_suspend,
|
|
fsl_dsp_runtime_resume, NULL)
|
|
SET_SYSTEM_SLEEP_PM_OPS(fsl_dsp_suspend, fsl_dsp_resume)
|
|
};
|
|
|
|
static const struct of_device_id fsl_dsp_ids[] = {
|
|
{ .compatible = "fsl,imx8qxp-dsp-v1", },
|
|
{ .compatible = "fsl,imx8qm-dsp-v1", },
|
|
{ .compatible = "fsl,imx8mp-dsp-v1", },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, fsl_dsp_ids);
|
|
|
|
static struct platform_driver fsl_dsp_driver = {
|
|
.probe = fsl_dsp_probe,
|
|
.remove = fsl_dsp_remove,
|
|
.driver = {
|
|
.name = "fsl-dsp",
|
|
.of_match_table = fsl_dsp_ids,
|
|
.pm = &fsl_dsp_pm,
|
|
},
|
|
};
|
|
module_platform_driver(fsl_dsp_driver);
|
|
|
|
MODULE_DESCRIPTION("Freescale DSP driver");
|
|
MODULE_ALIAS("platform:fsl-dsp");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|