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 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 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 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