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// SPDX-License-Identifier: GPL-2.0
/*
* FPGA Region Driver for FPGA Management Engine (FME)
*
* Copyright (C) 2017-2018 Intel Corporation, Inc.
*
* Authors:
* Wu Hao <hao.wu@intel.com>
* Joseph Grecco <joe.grecco@intel.com>
* Enno Luebbers <enno.luebbers@intel.com>
* Tim Whisonant <tim.whisonant@intel.com>
* Ananda Ravuri <ananda.ravuri@intel.com>
* Henry Mitchel <henry.mitchel@intel.com>
*/
#include <linux/module.h>
#include <linux/fpga/fpga-mgr.h>
#include <linux/fpga/fpga-region.h>
#include "dfl-fme-pr.h"
static int fme_region_get_bridges(struct fpga_region *region)
{
struct dfl_fme_region_pdata *pdata = region->priv;
struct device *dev = &pdata->br->dev;
return fpga_bridge_get_to_list(dev, region->info, ®ion->bridge_list);
}
static int fme_region_probe(struct platform_device *pdev)
{
struct dfl_fme_region_pdata *pdata = dev_get_platdata(&pdev->dev);
struct device *dev = &pdev->dev;
struct fpga_region *region;
struct fpga_manager *mgr;
int ret;
mgr = fpga_mgr_get(&pdata->mgr->dev);
if (IS_ERR(mgr))
return -EPROBE_DEFER;
region = fpga_region_create(dev, mgr, fme_region_get_bridges);
if (!region) {
ret = -ENOMEM;
goto eprobe_mgr_put;
}
region->priv = pdata;
region->compat_id = mgr->compat_id;
platform_set_drvdata(pdev, region);
ret = fpga_region_register(region);
if (ret)
goto region_free;
dev_dbg(dev, "DFL FME FPGA Region probed\n");
return 0;
region_free:
fpga_region_free(region);
eprobe_mgr_put:
fpga_mgr_put(mgr);
return ret;
}
static int fme_region_remove(struct platform_device *pdev)
{
struct fpga_region *region = dev_get_drvdata(&pdev->dev);
struct fpga_manager *mgr = region->mgr;
fpga_region_unregister(region);
fpga_mgr_put(mgr);
return 0;
}
static struct platform_driver fme_region_driver = {
.driver = {
.name = DFL_FPGA_FME_REGION,
},
.probe = fme_region_probe,
.remove = fme_region_remove,
};
module_platform_driver(fme_region_driver);
MODULE_DESCRIPTION("FPGA Region for DFL FPGA Management Engine");
MODULE_AUTHOR("Intel Corporation");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:dfl-fme-region");
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