LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gm20b.c

   1/*
   2 * Copyright (c) 2016, 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
  23#include <engine/falcon.h>
  24#include <core/msgqueue.h>
  25#include "priv.h"
  26
  27static void
  28gm20b_pmu_recv(struct nvkm_pmu *pmu)
  29{
  30        if (!pmu->queue) {
  31                nvkm_warn(&pmu->subdev,
  32                          "recv function called while no firmware set!\n");
  33                return;
  34        }
  35
  36        nvkm_msgqueue_recv(pmu->queue);
  37}
  38
  39static const struct nvkm_pmu_func
  40gm20b_pmu = {
  41        .enabled = gf100_pmu_enabled,
  42        .intr = gt215_pmu_intr,
  43        .recv = gm20b_pmu_recv,
  44};
  45
  46int
  47gm20b_pmu_new(struct nvkm_device *device, int index, struct nvkm_pmu **ppmu)
  48{
  49        int ret;
  50
  51        ret = nvkm_pmu_new_(&gm20b_pmu, device, index, ppmu);
  52        if (ret)
  53                return ret;
  54
  55        return 0;
  56}
  57