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 void
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 
72 	if (r022500 & 0x00000001)
73 		nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0);
74 
75 	if (r022500 & 0x00000002) {
76 		nvkm_subdev_disable(device, NVKM_ENGINE_MSPDEC, 0);
77 		nvkm_subdev_disable(device, NVKM_ENGINE_MSPPP, 0);
78 	}
79 
80 	if (r022500 & 0x00000004)
81 		nvkm_subdev_disable(device, NVKM_ENGINE_MSVLD, 0);
82 	if (r022500 & 0x00000008)
83 		nvkm_subdev_disable(device, NVKM_ENGINE_MSENC, 0);
84 	if (r022500 & 0x00000100)
85 		nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0);
86 	if (r022500 & 0x00000200)
87 		nvkm_subdev_disable(device, NVKM_ENGINE_CE, 1);
88 }
89 
90 void
91 gf100_devinit_preinit(struct nvkm_devinit *base)
92 {
93 	struct nv50_devinit *init = nv50_devinit(base);
94 	struct nvkm_subdev *subdev = &init->base.subdev;
95 	struct nvkm_device *device = subdev->device;
96 
97 	/*
98 	 * This bit is set by devinit, and flips back to 0 on suspend. We
99 	 * can use it as a reliable way to know whether we should run devinit.
100 	 */
101 	base->post = ((nvkm_rd32(device, 0x2240c) & BIT(1)) == 0);
102 }
103 
104 static const struct nvkm_devinit_func
105 gf100_devinit = {
106 	.preinit = gf100_devinit_preinit,
107 	.init = nv50_devinit_init,
108 	.post = nv04_devinit_post,
109 	.pll_set = gf100_devinit_pll_set,
110 	.disable = gf100_devinit_disable,
111 };
112 
113 int
114 gf100_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
115 		  struct nvkm_devinit **pinit)
116 {
117 	return nv50_devinit_new_(&gf100_devinit, device, type, inst, pinit);
118 }
119