drivers/gpu/drm/nouveau/nvkm/subdev/fuse/base.c

   1 /*
   2  * Copyright 2014 Martin Peres
   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: Martin Peres
  23  */
  24 #include "priv.h"
  25
  26 u32
  27 nvkm_fuse_read(struct nvkm_fuse *fuse, u32 addr)
  28 {
  29         return fuse->func->read(fuse, addr);
  30 }
  31
  32 static void *
  33 nvkm_fuse_dtor(struct nvkm_subdev *subdev)
  34 {
  35         return nvkm_fuse(subdev);
  36 }
  37
  38 static const struct nvkm_subdev_func
  39 nvkm_fuse = {
  40         .dtor = nvkm_fuse_dtor,
  41 };
  42
  43 int
  44 nvkm_fuse_new_(const struct nvkm_fuse_func *func, struct nvkm_device *device,
  45                int index, struct nvkm_fuse **pfuse)
  46 {
  47         struct nvkm_fuse *fuse;
  48         if (!(fuse = *pfuse = kzalloc(sizeof(*fuse), GFP_KERNEL)))
  49                 return -ENOMEM;
  50         nvkm_subdev_ctor(&nvkm_fuse, device, index, &fuse->subdev);
  51         fuse->func = func;
  52         spin_lock_init(&fuse->lock);
  53         return 0;
  54 }