1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (c) 2017 MediaTek Inc.
 4 * Author: Kevin 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 venc_cg_regs = {
16	.set_ofs = 0x0004,
17	.clr_ofs = 0x0008,
18	.sta_ofs = 0x0000,
19};
20
21#define GATE_VENC(_id, _name, _parent, _shift) {	\
22		.id = _id,				\
23		.name = _name,				\
24		.parent_name = _parent,			\
25		.regs = &venc_cg_regs,			\
26		.shift = _shift,			\
27		.ops = &mtk_clk_gate_ops_setclr_inv,	\
28	}
29
30static const struct mtk_gate venc_clks[] = {
31	GATE_VENC(CLK_VENC_0, "venc_0", "mm_sel", 0),
32	GATE_VENC(CLK_VENC_1, "venc_1", "venc_sel", 4),
33	GATE_VENC(CLK_VENC_2, "venc_2", "venc_sel", 8),
34	GATE_VENC(CLK_VENC_3, "venc_3", "venc_sel", 12),
35};
36
37static const struct of_device_id of_match_clk_mt6797_venc[] = {
38	{ .compatible = "mediatek,mt6797-vencsys", },
39	{}
40};
41
42static int clk_mt6797_venc_probe(struct platform_device *pdev)
43{
44	struct clk_onecell_data *clk_data;
45	int r;
46	struct device_node *node = pdev->dev.of_node;
47
48	clk_data = mtk_alloc_clk_data(CLK_VENC_NR);
49
50	mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
51			       clk_data);
52
53	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
54	if (r)
55		dev_err(&pdev->dev,
56			"could not register clock provider: %s: %d\n",
57			pdev->name, r);
58
59	return r;
60}
61
62static struct platform_driver clk_mt6797_venc_drv = {
63	.probe = clk_mt6797_venc_probe,
64	.driver = {
65		.name = "clk-mt6797-venc",
66		.of_match_table = of_match_clk_mt6797_venc,
67	},
68};
69
70builtin_platform_driver(clk_mt6797_venc_drv);