1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2017 MediaTek Inc.
4 * Author: Kevin-CW Chen <kevin-cw.chen@mediatek.com>
5 */
6
7#include <linux/clk-provider.h>
8#include <linux/platform_device.h>
9
10#include "clk-mtk.h"
11#include "clk-gate.h"
12
13#include <dt-bindings/clock/mt6797-clk.h>
14
15static const struct mtk_gate_regs vdec0_cg_regs = {
16	.set_ofs = 0x0000,
17	.clr_ofs = 0x0004,
18	.sta_ofs = 0x0000,
19};
20
21static const struct mtk_gate_regs vdec1_cg_regs = {
22	.set_ofs = 0x0008,
23	.clr_ofs = 0x000c,
24	.sta_ofs = 0x0008,
25};
26
27#define GATE_VDEC0(_id, _name, _parent, _shift) {		\
28	.id = _id,					\
29	.name = _name,					\
30	.parent_name = _parent,				\
31	.regs = &vdec0_cg_regs,				\
32	.shift = _shift,				\
33	.ops = &mtk_clk_gate_ops_setclr_inv,		\
34}
35
36#define GATE_VDEC1(_id, _name, _parent, _shift) {		\
37	.id = _id,					\
38	.name = _name,					\
39	.parent_name = _parent,				\
40	.regs = &vdec1_cg_regs,				\
41	.shift = _shift,				\
42	.ops = &mtk_clk_gate_ops_setclr_inv,		\
43}
44
45static const struct mtk_gate vdec_clks[] = {
46	GATE_VDEC0(CLK_VDEC_CKEN_ENG, "vdec_cken_eng", "vdec_sel", 8),
47	GATE_VDEC0(CLK_VDEC_ACTIVE, "vdec_active", "vdec_sel", 4),
48	GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
49	GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "mm_sel", 0),
50};
51
52static const struct of_device_id of_match_clk_mt6797_vdec[] = {
53	{ .compatible = "mediatek,mt6797-vdecsys", },
54	{}
55};
56
57static int clk_mt6797_vdec_probe(struct platform_device *pdev)
58{
59	struct clk_onecell_data *clk_data;
60	int r;
61	struct device_node *node = pdev->dev.of_node;
62
63	clk_data = mtk_alloc_clk_data(CLK_VDEC_NR);
64
65	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
66			       clk_data);
67
68	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
69	if (r)
70		dev_err(&pdev->dev,
71			"could not register clock provider: %s: %d\n",
72			pdev->name, r);
73
74	return r;
75}
76
77static struct platform_driver clk_mt6797_vdec_drv = {
78	.probe = clk_mt6797_vdec_probe,
79	.driver = {
80		.name = "clk-mt6797-vdec",
81		.of_match_table = of_match_clk_mt6797_vdec,
82	},
83};
84
85builtin_platform_driver(clk_mt6797_vdec_drv);
86