linux-imx

/*

 * Qualcomm Peripheral Image Loader helpers

 *

 * Copyright (C) 2016 Linaro Ltd

 * Copyright (C) 2015 Sony Mobile Communications Inc

 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <linux/firmware.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/notifier.h>

#include <linux/remoteproc.h>

#include <linux/rpmsg/qcom_glink.h>

#include <linux/rpmsg/qcom_smd.h>

#include <linux/soc/qcom/mdt_loader.h>

​

#include "remoteproc_internal.h"

#include "qcom_common.h"

​

#define to_glink_subdev(d) container_of(d, struct qcom_rproc_glink, subdev)

#define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev)

#define to_ssr_subdev(d) container_of(d, struct qcom_rproc_ssr, subdev)

​

static BLOCKING_NOTIFIER_HEAD(ssr_notifiers);

​

static int glink_subdev_start(struct rproc_subdev *subdev)

{

    struct qcom_rproc_glink *glink = to_glink_subdev(subdev);

​

    glink->edge = qcom_glink_smem_register(glink->dev, glink->node);

​

    return PTR_ERR_OR_ZERO(glink->edge);

}

​

static void glink_subdev_stop(struct rproc_subdev *subdev, bool crashed)

{

    struct qcom_rproc_glink *glink = to_glink_subdev(subdev);

​

    qcom_glink_smem_unregister(glink->edge);

    glink->edge = NULL;

}

​

/**

 * qcom_add_glink_subdev() - try to add a GLINK subdevice to rproc

 * @rproc:  rproc handle to parent the subdevice

 * @glink:  reference to a GLINK subdev context

 */

void qcom_add_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink)

{

    struct device *dev = &rproc->dev;

​

    glink->node = of_get_child_by_name(dev->parent->of_node, "glink-edge");

    if (!glink->node)