LXR linux/drivers/gpu/drm/nouveau/nvif/driver.c

   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
  27static const struct nvif_driver *
  28nvif_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
  39int
  40nvif_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