1 /*
2  * Copyright 2016 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 <bskeggs@redhat.com>
23  */
24 #include "priv.h"
25 
26 static void
27 gp102_pmu_reset(struct nvkm_pmu *pmu)
28 {
29 	struct nvkm_device *device = pmu->subdev.device;
30 	nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000001);
31 	nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000000);
32 }
33 
34 static bool
35 gp102_pmu_enabled(struct nvkm_pmu *pmu)
36 {
37 	return !(nvkm_rd32(pmu->subdev.device, 0x10a3c0) & 0x00000001);
38 }
39 
40 static const struct nvkm_pmu_func
41 gp102_pmu = {
42 	.flcn = &gt215_pmu_flcn,
43 	.enabled = gp102_pmu_enabled,
44 	.reset = gp102_pmu_reset,
45 };
46 
47 static const struct nvkm_pmu_fwif
48 gp102_pmu_fwif[] = {
49 	{ -1, gm200_pmu_nofw, &gp102_pmu },
50 	{}
51 };
52 
53 int
54 gp102_pmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
55 	      struct nvkm_pmu **ppmu)
56 {
57 	return nvkm_pmu_new_(gp102_pmu_fwif, device, type, inst, ppmu);
58 }
59