1/* $NetBSD: nouveau_subdev_clock_nv04.c,v 1.1.1.1 2014/08/06 12:36:29 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
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_clock_nv04.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $");
29
30#include <subdev/bios.h>
31#include <subdev/bios/pll.h>
32#include <subdev/clock.h>
33#include <subdev/devinit/nv04.h>
34
35#include "pll.h"
36
37struct nv04_clock_priv {
38 struct nouveau_clock base;
39};
40
41int
42nv04_clock_pll_calc(struct nouveau_clock *clock, struct nvbios_pll *info,
43 int clk, struct nouveau_pll_vals *pv)
44{
45 int N1, M1, N2, M2, P;
46 int ret = nv04_pll_calc(nv_subdev(clock), info, clk, &N1, &M1, &N2, &M2, &P);
47 if (ret) {
48 pv->refclk = info->refclk;
49 pv->N1 = N1;
50 pv->M1 = M1;
51 pv->N2 = N2;
52 pv->M2 = M2;
53 pv->log2P = P;
54 }
55 return ret;
56}
57
58int
59nv04_clock_pll_prog(struct nouveau_clock *clk, u32 reg1,
60 struct nouveau_pll_vals *pv)
61{
62 struct nouveau_devinit *devinit = nouveau_devinit(clk);
63 int cv = nouveau_bios(clk)->version.chip;
64
65 if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 ||
66 cv >= 0x40) {
67 if (reg1 > 0x405c)
68 setPLL_double_highregs(devinit, reg1, pv);
69 else
70 setPLL_double_lowregs(devinit, reg1, pv);
71 } else
72 setPLL_single(devinit, reg1, pv);
73
74 return 0;
75}
76
77static struct nouveau_clocks
78nv04_domain[] = {
79 { nv_clk_src_max }
80};
81
82static int
83nv04_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
84 struct nouveau_oclass *oclass, void *data, u32 size,
85 struct nouveau_object **pobject)
86{
87 struct nv04_clock_priv *priv;
88 int ret;
89
90 ret = nouveau_clock_create(parent, engine, oclass, nv04_domain, &priv);
91 *pobject = nv_object(priv);
92 if (ret)
93 return ret;
94
95 priv->base.pll_calc = nv04_clock_pll_calc;
96 priv->base.pll_prog = nv04_clock_pll_prog;
97 return 0;
98}
99
100struct nouveau_oclass
101nv04_clock_oclass = {
102 .handle = NV_SUBDEV(CLOCK, 0x04),
103 .ofuncs = &(struct nouveau_ofuncs) {
104 .ctor = nv04_clock_ctor,
105 .dtor = _nouveau_clock_dtor,
106 .init = _nouveau_clock_init,
107 .fini = _nouveau_clock_fini,
108 },
109};
110