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
29 static int
ga100_devinit_pll_set(struct nvkm_devinit * init,u32 type,u32 freq)30 ga100_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
66 static void
ga100_devinit_disable(struct nvkm_devinit * init)67 ga100_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
76 static const struct nvkm_devinit_func
77 ga100_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
84 int
ga100_devinit_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_devinit ** pinit)85 ga100_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