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b90fcfcb13
Move the SMD edge handling to the Qualcomm common file to make it reusable for other Qualcomm remoteproc drivers. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/*
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* Qualcomm Peripheral Image Loader helpers
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*
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* Copyright (C) 2016 Linaro Ltd
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* Copyright (C) 2015 Sony Mobile Communications Inc
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/firmware.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/remoteproc.h>
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#include <linux/rpmsg/qcom_smd.h>
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#include "remoteproc_internal.h"
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#include "qcom_common.h"
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#define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev)
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/**
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* qcom_mdt_find_rsc_table() - provide dummy resource table for remoteproc
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* @rproc: remoteproc handle
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* @fw: firmware header
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* @tablesz: outgoing size of the table
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*
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* Returns a dummy table.
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*/
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struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc,
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const struct firmware *fw,
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int *tablesz)
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{
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static struct resource_table table = { .ver = 1, };
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*tablesz = sizeof(table);
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return &table;
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}
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EXPORT_SYMBOL_GPL(qcom_mdt_find_rsc_table);
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static int smd_subdev_probe(struct rproc_subdev *subdev)
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{
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struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);
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smd->edge = qcom_smd_register_edge(smd->dev, smd->node);
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return IS_ERR(smd->edge) ? PTR_ERR(smd->edge) : 0;
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}
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static void smd_subdev_remove(struct rproc_subdev *subdev)
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{
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struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);
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qcom_smd_unregister_edge(smd->edge);
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smd->edge = NULL;
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}
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/**
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* qcom_add_smd_subdev() - try to add a SMD subdevice to rproc
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* @rproc: rproc handle to parent the subdevice
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* @smd: reference to a Qualcomm subdev context
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*/
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void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)
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{
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struct device *dev = &rproc->dev;
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smd->node = of_get_child_by_name(dev->parent->of_node, "smd-edge");
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if (!smd->node)
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return;
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smd->dev = dev;
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rproc_add_subdev(rproc, &smd->subdev, smd_subdev_probe, smd_subdev_remove);
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}
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EXPORT_SYMBOL_GPL(qcom_add_smd_subdev);
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/**
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* qcom_remove_smd_subdev() - remove the smd subdevice from rproc
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* @rproc: rproc handle
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* @smd: the SMD subdevice to remove
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*/
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void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)
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{
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rproc_remove_subdev(rproc, &smd->subdev);
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of_node_put(smd->node);
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}
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EXPORT_SYMBOL_GPL(qcom_remove_smd_subdev);
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MODULE_DESCRIPTION("Qualcomm Remoteproc helper driver");
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MODULE_LICENSE("GPL v2");
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