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1 | /* |
2 | * Copyright 2012 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 | ||
25 | #include <subdev/clock.h> | |
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26 | #include <subdev/bios.h> |
27 | #include <subdev/bios/pll.h> | |
28 | ||
29 | #include "pll.h" | |
8aceb7de BS |
30 | |
31 | struct nva3_clock_priv { | |
32 | struct nouveau_clock base; | |
33 | }; | |
34 | ||
70790f4f | 35 | static int |
8aceb7de BS |
36 | nva3_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) |
37 | { | |
38 | struct nva3_clock_priv *priv = (void *)clk; | |
70790f4f BS |
39 | struct nouveau_bios *bios = nouveau_bios(priv); |
40 | struct nvbios_pll info; | |
41 | int N, fN, M, P; | |
42 | int ret; | |
43 | ||
44 | ret = nvbios_pll_parse(bios, type, &info); | |
45 | if (ret) | |
46 | return ret; | |
47 | ||
48 | ret = nva3_pll_calc(clk, &info, freq, &N, &fN, &M, &P); | |
49 | if (ret < 0) | |
50 | return ret; | |
51 | ||
52 | switch (info.type) { | |
53 | case PLL_VPLL0: | |
54 | case PLL_VPLL1: | |
55 | nv_wr32(priv, info.reg + 0, 0x50000610); | |
56 | nv_mask(priv, info.reg + 4, 0x003fffff, | |
57 | (P << 16) | (M << 8) | N); | |
58 | nv_wr32(priv, info.reg + 8, fN); | |
59 | break; | |
60 | default: | |
61 | nv_warn(priv, "0x%08x/%dKhz unimplemented\n", type, freq); | |
62 | ret = -EINVAL; | |
63 | break; | |
64 | } | |
8aceb7de | 65 | |
70790f4f | 66 | return ret; |
8aceb7de BS |
67 | } |
68 | ||
69 | static int | |
70 | nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, | |
71 | struct nouveau_oclass *oclass, void *data, u32 size, | |
72 | struct nouveau_object **pobject) | |
73 | { | |
74 | struct nva3_clock_priv *priv; | |
75 | int ret; | |
76 | ||
77 | ret = nouveau_clock_create(parent, engine, oclass, &priv); | |
78 | *pobject = nv_object(priv); | |
79 | if (ret) | |
80 | return ret; | |
81 | ||
82 | priv->base.pll_set = nva3_clock_pll_set; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | struct nouveau_oclass | |
87 | nva3_clock_oclass = { | |
88 | .handle = NV_SUBDEV(CLOCK, 0xa3), | |
89 | .ofuncs = &(struct nouveau_ofuncs) { | |
90 | .ctor = nva3_clock_ctor, | |
91 | .dtor = _nouveau_clock_dtor, | |
92 | .init = _nouveau_clock_init, | |
93 | .fini = _nouveau_clock_fini, | |
94 | }, | |
95 | }; |