1 /*
2  * Copyright 2016 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Ben Skeggs
23  */
24 #include <nvif/driver.h>
25 #include <nvif/client.h>
26 
27 static const struct nvif_driver *
28 nvif_driver[] = {
29 #ifdef __KERNEL__
30 	&nvif_driver_nvkm,
31 #else
32 	&nvif_driver_drm,
33 	&nvif_driver_lib,
34 	&nvif_driver_null,
35 #endif
36 	NULL
37 };
38 
39 int
nvif_driver_init(const char * drv,const char * cfg,const char * dbg,const char * name,u64 device,struct nvif_client * client)40 nvif_driver_init(const char *drv, const char *cfg, const char *dbg,
41 		 const char *name, u64 device, struct nvif_client *client)
42 {
43 	int ret = -EINVAL, i;
44 
45 	for (i = 0; (client->driver = nvif_driver[i]); i++) {
46 		if (!drv || !strcmp(client->driver->name, drv)) {
47 			ret = client->driver->init(name, device, cfg, dbg,
48 						   &client->object.priv);
49 			if (ret == 0)
50 				break;
51 			client->driver->fini(client->object.priv);
52 		}
53 	}
54 
55 	if (ret == 0)
56 		ret = nvif_client_init(client, name, device, client);
57 	return ret;
58 }
59