1 /*
2  * Copyright 2018 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 #include "nv50.h"
23 
24 #include <subdev/bios.h>
25 #include <subdev/bios/pll.h>
26 #include <subdev/clk/pll.h>
27 
28 static int
29 gv100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
30 {
31 	struct nvkm_subdev *subdev = &init->subdev;
32 	struct nvkm_device *device = subdev->device;
33 	struct nvbios_pll info;
34 	int head = type - PLL_VPLL0;
35 	int N, fN, M, P;
36 	int ret;
37 
38 	ret = nvbios_pll_parse(device->bios, type, &info);
39 	if (ret)
40 		return ret;
41 
42 	ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
43 	if (ret < 0)
44 		return ret;
45 
46 	switch (info.type) {
47 	case PLL_VPLL0:
48 	case PLL_VPLL1:
49 	case PLL_VPLL2:
50 	case PLL_VPLL3:
51 		nvkm_wr32(device, 0x00ef10 + (head * 0x40), fN << 16);
52 		nvkm_wr32(device, 0x00ef04 + (head * 0x40), (P << 16) |
53 							    (N <<  8) |
54 							    (M <<  0));
55 		break;
56 	default:
57 		nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
58 		ret = -EINVAL;
59 		break;
60 	}
61 
62 	return ret;
63 }
64 
65 static const struct nvkm_devinit_func
66 gv100_devinit = {
67 	.preinit = gf100_devinit_preinit,
68 	.init = nv50_devinit_init,
69 	.post = gm200_devinit_post,
70 	.pll_set = gv100_devinit_pll_set,
71 	.disable = gm107_devinit_disable,
72 };
73 
74 int
75 gv100_devinit_new(struct nvkm_device *device, int index,
76 		struct nvkm_devinit **pinit)
77 {
78 	return nv50_devinit_new_(&gv100_devinit, device, index, pinit);
79 }
80