1/*
2 * Copyright 2021 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#include <subdev/gsp.h>
28
29static int
30ga100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
31{
32	struct nvkm_subdev *subdev = &init->subdev;
33	struct nvkm_device *device = subdev->device;
34	struct nvbios_pll info;
35	int head = type - PLL_VPLL0;
36	int N, fN, M, P;
37	int ret;
38
39	ret = nvbios_pll_parse(device->bios, type, &info);
40	if (ret)
41		return ret;
42
43	ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
44	if (ret < 0)
45		return ret;
46
47	switch (info.type) {
48	case PLL_VPLL0:
49	case PLL_VPLL1:
50	case PLL_VPLL2:
51	case PLL_VPLL3:
52		nvkm_wr32(device, 0x00ef00 + (head * 0x40), 0x02080004);
53		nvkm_wr32(device, 0x00ef18 + (head * 0x40), (N << 16) | fN);
54		nvkm_wr32(device, 0x00ef04 + (head * 0x40), (P << 16) | M);
55		nvkm_wr32(device, 0x00e9c0 + (head * 0x04), 0x00000001);
56		break;
57	default:
58		nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
59		ret = -EINVAL;
60		break;
61	}
62
63	return ret;
64}
65
66static void
67ga100_devinit_disable(struct nvkm_devinit *init)
68{
69	struct nvkm_device *device = init->subdev.device;
70	u32 r820c04 = nvkm_rd32(device, 0x820c04);
71
72	if (r820c04 & 0x00000001)
73		nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0);
74}
75
76static const struct nvkm_devinit_func
77ga100_devinit = {
78	.disable = ga100_devinit_disable,
79	.init = nv50_devinit_init,
80	.post = tu102_devinit_post,
81	.pll_set = ga100_devinit_pll_set,
82};
83
84int
85ga100_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
86		  struct nvkm_devinit **pinit)
87{
88	if (nvkm_gsp_rm(device->gsp))
89		return r535_devinit_new(&ga100_devinit, device, type, inst, pinit);
90
91	return nv50_devinit_new_(&ga100_devinit, device, type, inst, pinit);
92}
93