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 28 static int 29 ga100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq) 30 { 31 struct nvkm_subdev *subdev = &init->subdev; 32 struct nvkm_device *device = subdev->device; 33 struct nvbios_pll info; 34 int head = type - PLL_VPLL0; 35 int N, fN, M, P; 36 int ret; 37 38 ret = nvbios_pll_parse(device->bios, type, &info); 39 if (ret) 40 return ret; 41 42 ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P); 43 if (ret < 0) 44 return ret; 45 46 switch (info.type) { 47 case PLL_VPLL0: 48 case PLL_VPLL1: 49 case PLL_VPLL2: 50 case PLL_VPLL3: 51 nvkm_wr32(device, 0x00ef00 + (head * 0x40), 0x02080004); 52 nvkm_wr32(device, 0x00ef18 + (head * 0x40), (N << 16) | fN); 53 nvkm_wr32(device, 0x00ef04 + (head * 0x40), (P << 16) | M); 54 nvkm_wr32(device, 0x00e9c0 + (head * 0x04), 0x00000001); 55 break; 56 default: 57 nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq); 58 ret = -EINVAL; 59 break; 60 } 61 62 return ret; 63 } 64 65 static const struct nvkm_devinit_func 66 ga100_devinit = { 67 .init = nv50_devinit_init, 68 .post = tu102_devinit_post, 69 .pll_set = ga100_devinit_pll_set, 70 }; 71 72 int 73 ga100_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 74 struct nvkm_devinit **pinit) 75 { 76 return nv50_devinit_new_(&ga100_devinit, device, type, inst, pinit); 77 } 78