98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <subdev/clock.h>
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#include <subdev/bios.h>
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#include <subdev/bios/pll.h>
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#include "pll.h"
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struct nvc0_clock_priv {
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struct nouveau_clock base;
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};
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static int
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nvc0_clock_pll_set(struct nouveau_clock *clk, u32 type, u32 freq)
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{
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struct nvc0_clock_priv *priv = (void *)clk;
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struct nouveau_bios *bios = nouveau_bios(priv);
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struct nvbios_pll info;
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int N, fN, M, P;
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int ret;
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ret = nvbios_pll_parse(bios, type, &info);
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if (ret)
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return ret;
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ret = nva3_pll_calc(clk, &info, freq, &N, &fN, &M, &P);
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if (ret < 0)
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return ret;
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switch (info.type) {
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case PLL_VPLL0:
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case PLL_VPLL1:
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case PLL_VPLL2:
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case PLL_VPLL3:
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nv_mask(priv, info.reg + 0x0c, 0x00000000, 0x00000100);
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nv_wr32(priv, info.reg + 0x04, (P << 16) | (N << 8) | M);
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nv_wr32(priv, info.reg + 0x10, fN << 16);
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break;
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default:
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nv_warn(priv, "0x%08x/%dKhz unimplemented\n", type, freq);
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int
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nvc0_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
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struct nouveau_oclass *oclass, void *data, u32 size,
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struct nouveau_object **pobject)
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{
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struct nvc0_clock_priv *priv;
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int ret;
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ret = nouveau_clock_create(parent, engine, oclass, &priv);
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*pobject = nv_object(priv);
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if (ret)
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return ret;
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priv->base.pll_set = nvc0_clock_pll_set;
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priv->base.pll_calc = nva3_clock_pll_calc;
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return 0;
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}
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struct nouveau_oclass
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nvc0_clock_oclass = {
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.handle = NV_SUBDEV(CLOCK, 0xc0),
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.ofuncs = &(struct nouveau_ofuncs) {
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.ctor = nvc0_clock_ctor,
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.dtor = _nouveau_clock_dtor,
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.init = _nouveau_clock_init,
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.fini = _nouveau_clock_fini,
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},
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};
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