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8886a57974
The FPGA region class driver data structure is being treated as a managed resource instead of using the standard dev_release call-back function to release the class data structure. This change removes the managed resource code and combines the create() and register() functions into a single register() or register_full() function. The register_full() function accepts an info data structure to provide flexibility in passing optional parameters. The register() function supports the current parameter list for users that don't require the use of optional parameters. Signed-off-by: Russ Weight <russell.h.weight@intel.com> Reviewed-by: Xu Yilun <yilun.xu@intel.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* FPGA Region Driver for FPGA Management Engine (FME)
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*
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* Copyright (C) 2017-2018 Intel Corporation, Inc.
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*
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* Authors:
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* Wu Hao <hao.wu@intel.com>
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* Joseph Grecco <joe.grecco@intel.com>
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* Enno Luebbers <enno.luebbers@intel.com>
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* Tim Whisonant <tim.whisonant@intel.com>
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* Ananda Ravuri <ananda.ravuri@intel.com>
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* Henry Mitchel <henry.mitchel@intel.com>
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*/
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#include <linux/module.h>
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#include <linux/fpga/fpga-mgr.h>
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#include <linux/fpga/fpga-region.h>
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#include "dfl-fme-pr.h"
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static int fme_region_get_bridges(struct fpga_region *region)
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{
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struct dfl_fme_region_pdata *pdata = region->priv;
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struct device *dev = &pdata->br->dev;
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return fpga_bridge_get_to_list(dev, region->info, ®ion->bridge_list);
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}
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static int fme_region_probe(struct platform_device *pdev)
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{
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struct dfl_fme_region_pdata *pdata = dev_get_platdata(&pdev->dev);
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struct fpga_region_info info = { 0 };
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struct device *dev = &pdev->dev;
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struct fpga_region *region;
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struct fpga_manager *mgr;
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int ret;
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mgr = fpga_mgr_get(&pdata->mgr->dev);
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if (IS_ERR(mgr))
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return -EPROBE_DEFER;
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info.mgr = mgr;
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info.compat_id = mgr->compat_id;
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info.get_bridges = fme_region_get_bridges;
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info.priv = pdata;
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region = fpga_region_register_full(dev, &info);
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if (IS_ERR(region)) {
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ret = PTR_ERR(region);
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goto eprobe_mgr_put;
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}
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platform_set_drvdata(pdev, region);
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dev_dbg(dev, "DFL FME FPGA Region probed\n");
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return 0;
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eprobe_mgr_put:
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fpga_mgr_put(mgr);
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return ret;
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}
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static int fme_region_remove(struct platform_device *pdev)
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{
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struct fpga_region *region = platform_get_drvdata(pdev);
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struct fpga_manager *mgr = region->mgr;
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fpga_region_unregister(region);
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fpga_mgr_put(mgr);
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return 0;
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}
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static struct platform_driver fme_region_driver = {
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.driver = {
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.name = DFL_FPGA_FME_REGION,
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},
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.probe = fme_region_probe,
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.remove = fme_region_remove,
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};
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module_platform_driver(fme_region_driver);
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MODULE_DESCRIPTION("FPGA Region for DFL FPGA Management Engine");
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MODULE_AUTHOR("Intel Corporation");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:dfl-fme-region");
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