nouveau/nvif/driver.c

0001 /*
0002  * Copyright 2016 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Ben Skeggs
0023  */
0024 #include <nvif/driver.h>
0025 #include <nvif/client.h>
0026
0027 static const struct nvif_driver *
0028 nvif_driver[] = {
0029 #ifdef __KERNEL__
0030     &nvif_driver_nvkm,
0031 #else
0032     &nvif_driver_drm,
0033     &nvif_driver_lib,
0034     &nvif_driver_null,
0035 #endif
0036     NULL
0037 };
0038
0039 int
0040 nvif_driver_init(const char *drv, const char *cfg, const char *dbg,
0041          const char *name, u64 device, struct nvif_client *client)
0042 {
0043     int ret = -EINVAL, i;
0044
0045     for (i = 0; (client->driver = nvif_driver[i]); i++) {
0046         if (!drv || !strcmp(client->driver->name, drv)) {
0047             ret = client->driver->init(name, device, cfg, dbg,
0048                            &client->object.priv);
0049             if (ret == 0)
0050                 break;
0051             client->driver->fini(client->object.priv);
0052         }
0053     }
0054
0055     if (ret == 0)
0056         ret = nvif_client_ctor(client, name, device, client);
0057     return ret;
0058 }