xref: /linux/drivers/gpu/drm/nouveau/nvkm/subdev/therm/fannil.c (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
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
nvkm_fannil_get(struct nvkm_therm * therm)27 nvkm_fannil_get(struct nvkm_therm *therm)
28 {
29 	return -ENODEV;
30 }
31 
32 static int
nvkm_fannil_set(struct nvkm_therm * therm,int percent)33 nvkm_fannil_set(struct nvkm_therm *therm, int percent)
34 {
35 	return -ENODEV;
36 }
37 
38 int
nvkm_fannil_create(struct nvkm_therm * therm)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 }
53