xref: /linux/drivers/gpu/drm/nouveau/nvkm/subdev/volt/nv40.c (revision d0034a7a4ac7fae708146ac0059b9c47a1543f0d)
1 /*
2  * Copyright 2013 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 const struct nvkm_volt_func
27 nv40_volt = {
28 	.vid_get = nvkm_voltgpio_get,
29 	.vid_set = nvkm_voltgpio_set,
30 };
31 
32 int
nv40_volt_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_volt ** pvolt)33 nv40_volt_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
34 	      struct nvkm_volt **pvolt)
35 {
36 	struct nvkm_volt *volt;
37 	int ret;
38 
39 	ret = nvkm_volt_new_(&nv40_volt, device, type, inst, &volt);
40 	*pvolt = volt;
41 	if (ret)
42 		return ret;
43 
44 	return nvkm_voltgpio_init(volt);
45 }
46