drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gv100.c

   1 /*
   2  * Copyright 2018 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 #include "nv50.h"
  23
  24 #include <subdev/bios.h>
  25 #include <subdev/bios/pll.h>
  26 #include <subdev/clk/pll.h>
  27
  28 static int
  29 gv100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
  30 {
  31         struct nvkm_subdev *subdev = &init->subdev;
  32         struct nvkm_device *device = subdev->device;
  33         struct nvbios_pll info;
  34         int head = type - PLL_VPLL0;
  35         int N, fN, M, P;
  36         int ret;
  37
  38         ret = nvbios_pll_parse(device->bios, type, &info);
  39         if (ret)
  40                 return ret;
  41
  42         ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
  43         if (ret < 0)
  44                 return ret;
  45
  46         switch (info.type) {
  47         case PLL_VPLL0:
  48         case PLL_VPLL1:
  49         case PLL_VPLL2:
  50         case PLL_VPLL3:
  51                 nvkm_wr32(device, 0x00ef10 + (head * 0x40), fN << 16);
  52                 nvkm_wr32(device, 0x00ef04 + (head * 0x40), (P << 16) |
  53                                                             (N <<  8) |
  54                                                             (M <<  0));
  55                 break;
  56         default:
  57                 nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
  58                 ret = -EINVAL;
  59                 break;
  60         }
  61
  62         return ret;
  63 }
  64
  65 static const struct nvkm_devinit_func
  66 gv100_devinit = {
  67         .preinit = gf100_devinit_preinit,
  68         .init = nv50_devinit_init,
  69         .post = gm200_devinit_post,
  70         .pll_set = gv100_devinit_pll_set,
  71         .disable = gm107_devinit_disable,
  72 };
  73
  74 int
  75 gv100_devinit_new(struct nvkm_device *device, int index,
  76                 struct nvkm_devinit **pinit)
  77 {
  78         return nv50_devinit_new_(&gv100_devinit, device, index, pinit);
  79 }