1a3c950f2SKarol Herbst /*
2a3c950f2SKarol Herbst * Copyright 2016 Karol Herbst
3a3c950f2SKarol Herbst *
4a3c950f2SKarol Herbst * Permission is hereby granted, free of charge, to any person obtaining a
5a3c950f2SKarol Herbst * copy of this software and associated documentation files (the "Software"),
6a3c950f2SKarol Herbst * to deal in the Software without restriction, including without limitation
7a3c950f2SKarol Herbst * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8a3c950f2SKarol Herbst * and/or sell copies of the Software, and to permit persons to whom the
9a3c950f2SKarol Herbst * Software is furnished to do so, subject to the following conditions:
10a3c950f2SKarol Herbst *
11a3c950f2SKarol Herbst * The above copyright notice and this permission notice shall be included in
12a3c950f2SKarol Herbst * all copies or substantial portions of the Software.
13a3c950f2SKarol Herbst *
14a3c950f2SKarol Herbst * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15a3c950f2SKarol Herbst * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16a3c950f2SKarol Herbst * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17a3c950f2SKarol Herbst * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18a3c950f2SKarol Herbst * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19a3c950f2SKarol Herbst * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20a3c950f2SKarol Herbst * OTHER DEALINGS IN THE SOFTWARE.
21a3c950f2SKarol Herbst *
22a3c950f2SKarol Herbst * Authors: Karol Herbst
23a3c950f2SKarol Herbst */
24a3c950f2SKarol Herbst #include "priv.h"
25a3c950f2SKarol Herbst
2608de5743SKarol Herbst #include <subdev/fuse.h>
2708de5743SKarol Herbst
2808de5743SKarol Herbst static int
gf100_volt_speedo_read(struct nvkm_volt * volt)2908de5743SKarol Herbst gf100_volt_speedo_read(struct nvkm_volt *volt)
3008de5743SKarol Herbst {
3108de5743SKarol Herbst struct nvkm_device *device = volt->subdev.device;
3208de5743SKarol Herbst struct nvkm_fuse *fuse = device->fuse;
3308de5743SKarol Herbst
3408de5743SKarol Herbst if (!fuse)
3508de5743SKarol Herbst return -EINVAL;
3608de5743SKarol Herbst
3708de5743SKarol Herbst return nvkm_fuse_read(fuse, 0x1cc);
3808de5743SKarol Herbst }
3908de5743SKarol Herbst
4008de5743SKarol Herbst int
gf100_volt_oneinit(struct nvkm_volt * volt)4108de5743SKarol Herbst gf100_volt_oneinit(struct nvkm_volt *volt)
4208de5743SKarol Herbst {
4308de5743SKarol Herbst struct nvkm_subdev *subdev = &volt->subdev;
4408de5743SKarol Herbst if (volt->speedo <= 0)
4508de5743SKarol Herbst nvkm_error(subdev, "couldn't find speedo value, volting not "
4608de5743SKarol Herbst "possible\n");
4708de5743SKarol Herbst return 0;
4808de5743SKarol Herbst }
4908de5743SKarol Herbst
50a3c950f2SKarol Herbst static const struct nvkm_volt_func
51a3c950f2SKarol Herbst gf100_volt = {
5208de5743SKarol Herbst .oneinit = gf100_volt_oneinit,
53a3c950f2SKarol Herbst .vid_get = nvkm_voltgpio_get,
54a3c950f2SKarol Herbst .vid_set = nvkm_voltgpio_set,
5508de5743SKarol Herbst .speedo_read = gf100_volt_speedo_read,
56a3c950f2SKarol Herbst };
57a3c950f2SKarol Herbst
58a3c950f2SKarol Herbst int
gf100_volt_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_volt ** pvolt)59*d07be5d7SBen Skeggs gf100_volt_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
60*d07be5d7SBen Skeggs struct nvkm_volt **pvolt)
61a3c950f2SKarol Herbst {
62a3c950f2SKarol Herbst struct nvkm_volt *volt;
63a3c950f2SKarol Herbst int ret;
64a3c950f2SKarol Herbst
65*d07be5d7SBen Skeggs ret = nvkm_volt_new_(&gf100_volt, device, type, inst, &volt);
66a3c950f2SKarol Herbst *pvolt = volt;
67a3c950f2SKarol Herbst if (ret)
68a3c950f2SKarol Herbst return ret;
69a3c950f2SKarol Herbst
70a3c950f2SKarol Herbst return nvkm_voltgpio_init(volt);
71a3c950f2SKarol Herbst }
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