drivers/gpu/drm/nouveau/nvkm/subdev/therm/fannil.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 "priv.h"
  25
  26 static int
  27 nvkm_fannil_get(struct nvkm_therm *therm)
  28 {
  29         return -ENODEV;
  30 }
  31
  32 static int
  33 nvkm_fannil_set(struct nvkm_therm *therm, int percent)
  34 {
  35         return -ENODEV;
  36 }
  37
  38 int
  39 nvkm_fannil_create(struct nvkm_therm *therm)
  40 {
  41         struct nvkm_fan *priv;
  42
  43         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
  44         therm->fan = priv;
  45         if (!priv)
  46                 return -ENOMEM;
  47
  48         priv->type = "none / external";
  49         priv->get = nvkm_fannil_get;
  50         priv->set = nvkm_fannil_set;
  51         return 0;
  52 }