1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2017 MediaTek Inc.
4 * Author: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
14
15static const struct mtk_gate_regs vdec0_cg_regs = {
16	.set_ofs = 0x0,
17	.clr_ofs = 0x4,
18	.sta_ofs = 0x0,
19};
20
21static const struct mtk_gate_regs vdec1_cg_regs = {
22	.set_ofs = 0x8,
23	.clr_ofs = 0xc,
24	.sta_ofs = 0x8,
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	/* VDEC0 */
47	GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
48	/* VDEC1 */
49	GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "vdec_sel", 0),
50	GATE_VDEC1(CLK_VDEC_IMGRZ_CKEN, "vdec_imgrz_cken", "vdec_sel", 1),
51};
52
53static int clk_mt2712_vdec_probe(struct platform_device *pdev)
54{
55	struct clk_onecell_data *clk_data;
56	int r;
57	struct device_node *node = pdev->dev.of_node;
58
59	clk_data = mtk_alloc_clk_data(CLK_VDEC_NR_CLK);
60
61	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
62			clk_data);
63
64	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
65
66	if (r != 0)
67		pr_err("%s(): could not register clock provider: %d\n",
68			__func__, r);
69
70	return r;
71}
72
73static const struct of_device_id of_match_clk_mt2712_vdec[] = {
74	{ .compatible = "mediatek,mt2712-vdecsys", },
75	{}
76};
77
78static struct platform_driver clk_mt2712_vdec_drv = {
79	.probe = clk_mt2712_vdec_probe,
80	.driver = {
81		.name = "clk-mt2712-vdec",
82		.of_match_table = of_match_clk_mt2712_vdec,
83	},
84};
85
86builtin_platform_driver(clk_mt2712_vdec_drv);
87