drivers/gpu/drm/nouveau/nvkm/engine/disp/sornv50.c

   1 /*
   2  * Copyright 2012 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 #include "outp.h"
  26
  27 #include <core/client.h>
  28 #include <subdev/timer.h>
  29
  30 #include <nvif/class.h>
  31 #include <nvif/unpack.h>
  32
  33 int
  34 nv50_sor_power(NV50_DISP_MTHD_V1)
  35 {
  36         struct nvkm_device *device = disp->base.engine.subdev.device;
  37         union {
  38                 struct nv50_disp_sor_pwr_v0 v0;
  39         } *args = data;
  40         const u32 soff = outp->or * 0x800;
  41         u32 stat;
  42         int ret;
  43
  44         nvif_ioctl(object, "disp sor pwr size %d\n", size);
  45         if (nvif_unpack(args->v0, 0, 0, false)) {
  46                 nvif_ioctl(object, "disp sor pwr vers %d state %d\n",
  47                            args->v0.version, args->v0.state);
  48                 stat = !!args->v0.state;
  49         } else
  50                 return ret;
  51
  52
  53         nvkm_msec(device, 2000,
  54                 if (!(nvkm_rd32(device, 0x61c004 + soff) & 0x80000000))
  55                         break;
  56         );
  57         nvkm_mask(device, 0x61c004 + soff, 0x80000001, 0x80000000 | stat);
  58         nvkm_msec(device, 2000,
  59                 if (!(nvkm_rd32(device, 0x61c004 + soff) & 0x80000000))
  60                         break;
  61         );
  62         nvkm_msec(device, 2000,
  63                 if (!(nvkm_rd32(device, 0x61c030 + soff) & 0x10000000))
  64                         break;
  65         );
  66         return 0;
  67 }