drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk20a.c

   1 /*
   2  * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
   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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "gf100.h"
  23
  24 struct gk20a_fb_priv {
  25         struct nvkm_fb base;
  26 };
  27
  28 static int
  29 gk20a_fb_init(struct nvkm_object *object)
  30 {
  31         struct gk20a_fb_priv *priv = (void *)object;
  32         int ret;
  33
  34         ret = nvkm_fb_init(&priv->base);
  35         if (ret)
  36                 return ret;
  37
  38         nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
  39         return 0;
  40 }
  41
  42 static int
  43 gk20a_fb_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
  44               struct nvkm_oclass *oclass, void *data, u32 size,
  45               struct nvkm_object **pobject)
  46 {
  47         struct gk20a_fb_priv *priv;
  48         int ret;
  49
  50         ret = nvkm_fb_create(parent, engine, oclass, &priv);
  51         *pobject = nv_object(priv);
  52         if (ret)
  53                 return ret;
  54
  55         return 0;
  56 }
  57
  58 struct nvkm_oclass *
  59 gk20a_fb_oclass = &(struct nvkm_fb_impl) {
  60         .base.handle = NV_SUBDEV(FB, 0xea),
  61         .base.ofuncs = &(struct nvkm_ofuncs) {
  62                 .ctor = gk20a_fb_ctor,
  63                 .dtor = _nvkm_fb_dtor,
  64                 .init = gk20a_fb_init,
  65                 .fini = _nvkm_fb_fini,
  66         },
  67         .memtype = gf100_fb_memtype_valid,
  68         .ram = &gk20a_ram_oclass,
  69 }.base;