1 /*
2 * Copyright 2019 Ilia Mirkin
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: Ilia Mirkin
23 */
24 #include "priv.h"
25
26 #include <subdev/fuse.h>
27
28 static int
29 gf117_volt_speedo_read(struct nvkm_volt *volt)
30 {
31 struct nvkm_device *device = volt->subdev.device;
32 struct nvkm_fuse *fuse = device->fuse;
33
34 if (!fuse)
35 return -EINVAL;
36
37 return nvkm_fuse_read(fuse, 0x3a8);
38 }
39
40 static const struct nvkm_volt_func
41 gf117_volt = {
42 .oneinit = gf100_volt_oneinit,
43 .vid_get = nvkm_voltgpio_get,
44 .vid_set = nvkm_voltgpio_set,
45 .speedo_read = gf117_volt_speedo_read,
46 };
47
48 int
49 gf117_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
50 {
51 struct nvkm_volt *volt;
52 int ret;
53
54 ret = nvkm_volt_new_(&gf117_volt, device, index, &volt);
55 *pvolt = volt;
56 if (ret)
57 return ret;
58
59 return nvkm_voltgpio_init(volt);
60 }