1 /*
2  * Copyright 2013 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
23  */
24 #include "nv50.h"
25 
26 #include <subdev/bios.h>
27 #include <subdev/bios/init.h>
28 #include <subdev/bios/pll.h>
29 #include <subdev/clk/pll.h>
30 
31 int
32 gf100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
33 {
34 	struct nvkm_subdev *subdev = &init->subdev;
35 	struct nvkm_device *device = subdev->device;
36 	struct nvbios_pll info;
37 	int N, fN, M, P;
38 	int ret;
39 
40 	ret = nvbios_pll_parse(device->bios, type, &info);
41 	if (ret)
42 		return ret;
43 
44 	ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
45 	if (ret < 0)
46 		return ret;
47 
48 	switch (info.type) {
49 	case PLL_VPLL0:
50 	case PLL_VPLL1:
51 	case PLL_VPLL2:
52 	case PLL_VPLL3:
53 		nvkm_mask(device, info.reg + 0x0c, 0x00000000, 0x00000100);
54 		nvkm_wr32(device, info.reg + 0x04, (P << 16) | (N << 8) | M);
55 		nvkm_wr32(device, info.reg + 0x10, fN << 16);
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 
66 static u64
67 gf100_devinit_disable(struct nvkm_devinit *init)
68 {
69 	struct nvkm_device *device = init->subdev.device;
70 	u32 r022500 = nvkm_rd32(device, 0x022500);
71 	u64 disable = 0ULL;
72 
73 	if (r022500 & 0x00000001)
74 		disable |= (1ULL << NVKM_ENGINE_DISP);
75 
76 	if (r022500 & 0x00000002) {
77 		disable |= (1ULL << NVKM_ENGINE_MSPDEC);
78 		disable |= (1ULL << NVKM_ENGINE_MSPPP);
79 	}
80 
81 	if (r022500 & 0x00000004)
82 		disable |= (1ULL << NVKM_ENGINE_MSVLD);
83 	if (r022500 & 0x00000008)
84 		disable |= (1ULL << NVKM_ENGINE_MSENC);
85 	if (r022500 & 0x00000100)
86 		disable |= (1ULL << NVKM_ENGINE_CE0);
87 	if (r022500 & 0x00000200)
88 		disable |= (1ULL << NVKM_ENGINE_CE1);
89 
90 	return disable;
91 }
92 
93 void
94 gf100_devinit_preinit(struct nvkm_devinit *base)
95 {
96 	struct nv50_devinit *init = nv50_devinit(base);
97 	struct nvkm_subdev *subdev = &init->base.subdev;
98 	struct nvkm_device *device = subdev->device;
99 
100 	/*
101 	 * This bit is set by devinit, and flips back to 0 on suspend. We
102 	 * can use it as a reliable way to know whether we should run devinit.
103 	 */
104 	base->post = ((nvkm_rd32(device, 0x2240c) & BIT(1)) == 0);
105 }
106 
107 static const struct nvkm_devinit_func
108 gf100_devinit = {
109 	.preinit = gf100_devinit_preinit,
110 	.init = nv50_devinit_init,
111 	.post = nv04_devinit_post,
112 	.pll_set = gf100_devinit_pll_set,
113 	.disable = gf100_devinit_disable,
114 };
115 
116 int
117 gf100_devinit_new(struct nvkm_device *device, int index,
118 		struct nvkm_devinit **pinit)
119 {
120 	return nv50_devinit_new_(&gf100_devinit, device, index, pinit);
121 }
122