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 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 return 0ULL; 90 } 91 92 void 93 gf100_devinit_preinit(struct nvkm_devinit *base) 94 { 95 struct nv50_devinit *init = nv50_devinit(base); 96 struct nvkm_subdev *subdev = &init->base.subdev; 97 struct nvkm_device *device = subdev->device; 98 99 /* 100 * This bit is set by devinit, and flips back to 0 on suspend. We 101 * can use it as a reliable way to know whether we should run devinit. 102 */ 103 base->post = ((nvkm_rd32(device, 0x2240c) & BIT(1)) == 0); 104 } 105 106 static const struct nvkm_devinit_func 107 gf100_devinit = { 108 .preinit = gf100_devinit_preinit, 109 .init = nv50_devinit_init, 110 .post = nv04_devinit_post, 111 .pll_set = gf100_devinit_pll_set, 112 .disable = gf100_devinit_disable, 113 }; 114 115 int 116 gf100_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 117 struct nvkm_devinit **pinit) 118 { 119 return nv50_devinit_new_(&gf100_devinit, device, type, inst, pinit); 120 } 121