drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gp102.c

   1 /*
   2  * Copyright 2016 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 <bskeggs@redhat.com>
  23  */
  24 #include "priv.h"
  25
  26 static void
  27 gp102_pmu_reset(struct nvkm_pmu *pmu)
  28 {
  29         struct nvkm_device *device = pmu->subdev.device;
  30         nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000001);
  31         nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000000);
  32 }
  33
  34 static bool
  35 gp102_pmu_enabled(struct nvkm_pmu *pmu)
  36 {
  37         return !(nvkm_rd32(pmu->subdev.device, 0x10a3c0) & 0x00000001);
  38 }
  39
  40 static const struct nvkm_pmu_func
  41 gp102_pmu = {
  42         .flcn = &gt215_pmu_flcn,
  43         .enabled = gp102_pmu_enabled,
  44         .reset = gp102_pmu_reset,
  45 };
  46
  47 static const struct nvkm_pmu_fwif
  48 gp102_pmu_fwif[] = {
  49         { -1, gf100_pmu_nofw, &gp102_pmu },
  50         {}
  51 };
  52
  53 int
  54 gp102_pmu_new(struct nvkm_device *device, int index, struct nvkm_pmu **ppmu)
  55 {
  56         return nvkm_pmu_new_(gp102_pmu_fwif, device, index, ppmu);
  57 }