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 .enabled = gp102_pmu_enabled,
43 .reset = gp102_pmu_reset,
44 };
45
46 int
47 gp102_pmu_new(struct nvkm_device *device, int index, struct nvkm_pmu **ppmu)
48 {
49 return nvkm_pmu_new_(&gp102_pmu, device, index, ppmu);
50 }