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