| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs |
| */ |
| |
| #include <subdev/clock.h> |
| #include <subdev/bios.h> |
| #include <subdev/bios/pll.h> |
| |
| #include "pll.h" |
| |
| struct nva3_clock_priv { |
| struct nouveau_clock base; |
| }; |
| |
| static int |
| nva3_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq) |
| { |
| struct nva3_clock_priv *priv = (void *)clk; |
| struct nouveau_bios *bios = nouveau_bios(priv); |
| struct nvbios_pll info; |
| int N, fN, M, P; |
| int ret; |
| |
| ret = nvbios_pll_parse(bios, type, &info); |
| if (ret) |
| return ret; |
| |
| ret = nva3_pll_calc(clk, &info, freq, &N, &fN, &M, &P); |
| if (ret < 0) |
| return ret; |
| |
| switch (info.type) { |
| case PLL_VPLL0: |
| case PLL_VPLL1: |
| nv_wr32(priv, info.reg + 0, 0x50000610); |
| nv_mask(priv, info.reg + 4, 0x003fffff, |
| (P << 16) | (M << 8) | N); |
| nv_wr32(priv, info.reg + 8, fN); |
| break; |
| default: |
| nv_warn(priv, "0x%08x/%dKhz unimplemented\n", type, freq); |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| int |
| nva3_clock_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info, |
| int clk, struct nouveau_pll_vals *pv) |
| { |
| int ret, N, M, P; |
| |
| ret = nva3_pll_calc(clock, info, clk, &N, NULL, &M, &P); |
| |
| if (ret > 0) { |
| pv->refclk = info->refclk; |
| pv->N1 = N; |
| pv->M1 = M; |
| pv->log2P = P; |
| } |
| return ret; |
| } |
| |
| |
| static int |
| nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct nva3_clock_priv *priv; |
| int ret; |
| |
| ret = nouveau_clock_create(parent, engine, oclass, &priv); |
| *pobject = nv_object(priv); |
| if (ret) |
| return ret; |
| |
| priv->base.pll_set = nva3_clock_pll_set; |
| priv->base.pll_calc = nva3_clock_pll_calc; |
| return 0; |
| } |
| |
| struct nouveau_oclass |
| nva3_clock_oclass = { |
| .handle = NV_SUBDEV(CLOCK, 0xa3), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nva3_clock_ctor, |
| .dtor = _nouveau_clock_dtor, |
| .init = _nouveau_clock_init, |
| .fini = _nouveau_clock_fini, |
| }, |
| }; |