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/*
* 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;
}
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;
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,
},
};
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