drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c

   1 /*
   2  * Copyright 2013 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 "nv50.h"
  25
  26 #include <subdev/bios.h>
  27 #include <subdev/bios/init.h>
  28
  29 u64
  30 gm107_devinit_disable(struct nvkm_devinit *init)
  31 {
  32         struct nvkm_device *device = init->subdev.device;
  33         u32 r021c00 = nvkm_rd32(device, 0x021c00);
  34         u32 r021c04 = nvkm_rd32(device, 0x021c04);
  35         u64 disable = 0ULL;
  36
  37         if (r021c00 & 0x00000001)
  38                 disable |= (1ULL << NVKM_ENGINE_CE0);
  39         if (r021c00 & 0x00000004)
  40                 disable |= (1ULL << NVKM_ENGINE_CE2);
  41         if (r021c04 & 0x00000001)
  42                 disable |= (1ULL << NVKM_ENGINE_DISP);
  43
  44         return disable;
  45 }
  46
  47 static const struct nvkm_devinit_func
  48 gm107_devinit = {
  49         .preinit = gf100_devinit_preinit,
  50         .init = nv50_devinit_init,
  51         .post = nv04_devinit_post,
  52         .pll_set = gf100_devinit_pll_set,
  53         .disable = gm107_devinit_disable,
  54 };
  55
  56 int
  57 gm107_devinit_new(struct nvkm_device *device, int index,
  58                 struct nvkm_devinit **pinit)
  59 {
  60         return nv50_devinit_new_(&gm107_devinit, device, index, pinit);
  61 }