1/*	$NetBSD: nouveau_nvkm_subdev_clk_nv04.c,v 1.3 2021/12/18 23:45:39 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#include <sys/cdefs.h>
27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_clk_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
28
29#include "priv.h"
30#include "pll.h"
31
32#include <subdev/bios.h>
33#include <subdev/bios/pll.h>
34#include <subdev/devinit/nv04.h>
35
36int
37nv04_clk_pll_calc(struct nvkm_clk *clock, struct nvbios_pll *info,
38		  int clk, struct nvkm_pll_vals *pv)
39{
40	int N1, M1, N2, M2, P;
41	int ret = nv04_pll_calc(&clock->subdev, info, clk, &N1, &M1, &N2, &M2, &P);
42	if (ret) {
43		pv->refclk = info->refclk;
44		pv->N1 = N1;
45		pv->M1 = M1;
46		pv->N2 = N2;
47		pv->M2 = M2;
48		pv->log2P = P;
49	}
50	return ret;
51}
52
53int
54nv04_clk_pll_prog(struct nvkm_clk *clk, u32 reg1, struct nvkm_pll_vals *pv)
55{
56	struct nvkm_device *device = clk->subdev.device;
57	struct nvkm_devinit *devinit = device->devinit;
58	int cv = device->bios->version.chip;
59
60	if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 ||
61	    cv >= 0x40) {
62		if (reg1 > 0x405c)
63			setPLL_double_highregs(devinit, reg1, pv);
64		else
65			setPLL_double_lowregs(devinit, reg1, pv);
66	} else
67		setPLL_single(devinit, reg1, pv);
68
69	return 0;
70}
71
72static const struct nvkm_clk_func
73nv04_clk = {
74	.domains = {
75		{ nv_clk_src_max }
76	}
77};
78
79int
80nv04_clk_new(struct nvkm_device *device, int index, struct nvkm_clk **pclk)
81{
82	int ret = nvkm_clk_new_(&nv04_clk, device, index, false, pclk);
83	if (ret == 0) {
84		(*pclk)->pll_calc = nv04_clk_pll_calc;
85		(*pclk)->pll_prog = nv04_clk_pll_prog;
86	}
87	return ret;
88}
89