forked from luck/tmp_suning_uos_patched
dd37eed7db
Driver bind to devices based on the engine types & (optional) versions. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Chris Bostic <cbostic@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/*
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* FSI core driver
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*
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* Copyright (C) IBM Corporation 2016
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* 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/device.h>
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#include <linux/fsi.h>
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#include <linux/module.h>
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/* FSI core & Linux bus type definitions */
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static int fsi_bus_match(struct device *dev, struct device_driver *drv)
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{
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struct fsi_device *fsi_dev = to_fsi_dev(dev);
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struct fsi_driver *fsi_drv = to_fsi_drv(drv);
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const struct fsi_device_id *id;
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if (!fsi_drv->id_table)
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return 0;
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for (id = fsi_drv->id_table; id->engine_type; id++) {
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if (id->engine_type != fsi_dev->engine_type)
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continue;
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if (id->version == FSI_VERSION_ANY ||
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id->version == fsi_dev->version)
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return 1;
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}
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return 0;
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}
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struct bus_type fsi_bus_type = {
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.name = "fsi",
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.match = fsi_bus_match,
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};
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EXPORT_SYMBOL_GPL(fsi_bus_type);
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static int fsi_init(void)
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{
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return bus_register(&fsi_bus_type);
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}
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static void fsi_exit(void)
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{
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bus_unregister(&fsi_bus_type);
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}
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module_init(fsi_init);
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module_exit(fsi_exit);
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