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 #include "priv.h" 25 #include "pll.h" 26 27 #include <subdev/bios.h> 28 #include <subdev/bios/pll.h> 29 #include <subdev/devinit/nv04.h> 30 31 int 32 nv04_clk_pll_calc(struct nvkm_clk *clock, struct nvbios_pll *info, 33 int clk, struct nvkm_pll_vals *pv) 34 { 35 int N1, M1, N2, M2, P; 36 int ret = nv04_pll_calc(&clock->subdev, info, clk, &N1, &M1, &N2, &M2, &P); 37 if (ret) { 38 pv->refclk = info->refclk; 39 pv->N1 = N1; 40 pv->M1 = M1; 41 pv->N2 = N2; 42 pv->M2 = M2; 43 pv->log2P = P; 44 } 45 return ret; 46 } 47 48 int 49 nv04_clk_pll_prog(struct nvkm_clk *clk, u32 reg1, struct nvkm_pll_vals *pv) 50 { 51 struct nvkm_device *device = clk->subdev.device; 52 struct nvkm_devinit *devinit = device->devinit; 53 int cv = device->bios->version.chip; 54 55 if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 || 56 cv >= 0x40) { 57 if (reg1 > 0x405c) 58 setPLL_double_highregs(devinit, reg1, pv); 59 else 60 setPLL_double_lowregs(devinit, reg1, pv); 61 } else 62 setPLL_single(devinit, reg1, pv); 63 64 return 0; 65 } 66 67 static const struct nvkm_clk_func 68 nv04_clk = { 69 .domains = { 70 { nv_clk_src_max } 71 } 72 }; 73 74 int 75 nv04_clk_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 76 struct nvkm_clk **pclk) 77 { 78 int ret = nvkm_clk_new_(&nv04_clk, device, type, inst, false, pclk); 79 if (ret == 0) { 80 (*pclk)->pll_calc = nv04_clk_pll_calc; 81 (*pclk)->pll_prog = nv04_clk_pll_prog; 82 } 83 return ret; 84 } 85