Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 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> |
Ben Skeggs | 70790f4 | 2012-07-10 17:26:46 +1000 | [diff] [blame] | 26 | #include <subdev/bios.h> |
| 27 | #include <subdev/bios/pll.h> |
| 28 | |
| 29 | #include "pll.h" |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 30 | |
| 31 | struct nva3_clock_priv { |
| 32 | struct nouveau_clock base; |
| 33 | }; |
| 34 | |
Ben Skeggs | 70790f4 | 2012-07-10 17:26:46 +1000 | [diff] [blame] | 35 | static int |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 36 | nva3_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) |
| 37 | { |
| 38 | struct nva3_clock_priv *priv = (void *)clk; |
Ben Skeggs | 70790f4 | 2012-07-10 17:26:46 +1000 | [diff] [blame] | 39 | struct nouveau_bios *bios = nouveau_bios(priv); |
| 40 | struct nvbios_pll info; |
| 41 | int N, fN, M, P; |
| 42 | int ret; |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 43 | |
Ben Skeggs | 70790f4 | 2012-07-10 17:26:46 +1000 | [diff] [blame] | 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 | } |
| 65 | |
| 66 | return ret; |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 67 | } |
| 68 | |
Maarten Lankhorst | d9c3905 | 2012-11-16 17:47:16 +0100 | [diff] [blame^] | 69 | int |
| 70 | nva3_clock_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, |
| 71 | int clk, struct nouveau_pll_vals *pv) |
| 72 | { |
| 73 | int ret, N, M, P; |
| 74 | |
| 75 | ret = nva3_pll_calc(clock, info, clk, &N, NULL, &M, &P); |
| 76 | |
| 77 | if (ret > 0) { |
| 78 | pv->refclk = info->refclk; |
| 79 | pv->N1 = N; |
| 80 | pv->M1 = M; |
| 81 | pv->log2P = P; |
| 82 | } |
| 83 | return ret; |
| 84 | } |
| 85 | |
| 86 | |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 87 | static int |
| 88 | nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 89 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 90 | struct nouveau_object **pobject) |
| 91 | { |
| 92 | struct nva3_clock_priv *priv; |
| 93 | int ret; |
| 94 | |
| 95 | ret = nouveau_clock_create(parent, engine, oclass, &priv); |
| 96 | *pobject = nv_object(priv); |
| 97 | if (ret) |
| 98 | return ret; |
| 99 | |
| 100 | priv->base.pll_set = nva3_clock_pll_set; |
Maarten Lankhorst | d9c3905 | 2012-11-16 17:47:16 +0100 | [diff] [blame^] | 101 | priv->base.pll_calc = nva3_clock_pll_calc; |
Ben Skeggs | 8aceb7d | 2012-07-10 16:45:24 +1000 | [diff] [blame] | 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | struct nouveau_oclass |
| 106 | nva3_clock_oclass = { |
| 107 | .handle = NV_SUBDEV(CLOCK, 0xa3), |
| 108 | .ofuncs = &(struct nouveau_ofuncs) { |
| 109 | .ctor = nva3_clock_ctor, |
| 110 | .dtor = _nouveau_clock_dtor, |
| 111 | .init = _nouveau_clock_init, |
| 112 | .fini = _nouveau_clock_fini, |
| 113 | }, |
| 114 | }; |