1/* $NetBSD: nouveau_nvkm_subdev_clk_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $ */ 2 3/* 4 * Copyright 2012 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_clk_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $"); 28 29#include "priv.h" 30#include "pll.h" 31 32#include <subdev/bios.h> 33#include <subdev/bios/pll.h> 34#include <subdev/devinit/nv04.h> 35 36int 37nv04_clk_pll_calc(struct nvkm_clk *clock, struct nvbios_pll *info, 38 int clk, struct nvkm_pll_vals *pv) 39{ 40 int N1, M1, N2, M2, P; 41 int ret = nv04_pll_calc(&clock->subdev, info, clk, &N1, &M1, &N2, &M2, &P); 42 if (ret) { 43 pv->refclk = info->refclk; 44 pv->N1 = N1; 45 pv->M1 = M1; 46 pv->N2 = N2; 47 pv->M2 = M2; 48 pv->log2P = P; 49 } 50 return ret; 51} 52 53int 54nv04_clk_pll_prog(struct nvkm_clk *clk, u32 reg1, struct nvkm_pll_vals *pv) 55{ 56 struct nvkm_device *device = clk->subdev.device; 57 struct nvkm_devinit *devinit = device->devinit; 58 int cv = device->bios->version.chip; 59 60 if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 || 61 cv >= 0x40) { 62 if (reg1 > 0x405c) 63 setPLL_double_highregs(devinit, reg1, pv); 64 else 65 setPLL_double_lowregs(devinit, reg1, pv); 66 } else 67 setPLL_single(devinit, reg1, pv); 68 69 return 0; 70} 71 72static const struct nvkm_clk_func 73nv04_clk = { 74 .domains = { 75 { nv_clk_src_max } 76 } 77}; 78 79int 80nv04_clk_new(struct nvkm_device *device, int index, struct nvkm_clk **pclk) 81{ 82 int ret = nvkm_clk_new_(&nv04_clk, device, index, false, pclk); 83 if (ret == 0) { 84 (*pclk)->pll_calc = nv04_clk_pll_calc; 85 (*pclk)->pll_prog = nv04_clk_pll_prog; 86 } 87 return ret; 88} 89