1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright (c) 2017 MediaTek Inc.
3 * Author: Kevin Chen <kevin-cw.chen@mediatek.com>
4 */
5
6#include <linux/clk-provider.h>
7#include <linux/platform_device.h>
8#include <dt-bindings/clock/mt6797-clk.h>
9
10#include "clk-mtk.h"
11#include "clk-gate.h"
12
13static const struct mtk_gate_regs img_cg_regs = {
14	.set_ofs = 0x0004,
15	.clr_ofs = 0x0008,
16	.sta_ofs = 0x0000,
17};
18
19#define GATE_IMG(_id, _name, _parent, _shift) {		\
20		.id = _id,				\
21		.name = _name,				\
22		.parent_name = _parent,			\
23		.regs = &img_cg_regs,			\
24		.shift = _shift,			\
25		.ops = &mtk_clk_gate_ops_setclr,	\
26	}
27
28static const struct mtk_gate img_clks[] = {
29	GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_sel", 11),
30	GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_sel", 10),
31	GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_sel", 6),
32	GATE_IMG(CLK_IMG_LARB6, "img_larb6", "mm_sel", 0),
33};
34
35static const struct of_device_id of_match_clk_mt6797_img[] = {
36	{ .compatible = "mediatek,mt6797-imgsys", },
37	{}
38};
39
40static int clk_mt6797_img_probe(struct platform_device *pdev)
41{
42	struct clk_onecell_data *clk_data;
43	int r;
44	struct device_node *node = pdev->dev.of_node;
45
46	clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
47
48	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
49			       clk_data);
50
51	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
52	if (r)
53		dev_err(&pdev->dev,
54			"could not register clock provider: %s: %d\n",
55			pdev->name, r);
56
57	return r;
58}
59
60static struct platform_driver clk_mt6797_img_drv = {
61	.probe = clk_mt6797_img_probe,
62	.driver = {
63		.name = "clk-mt6797-img",
64		.of_match_table = of_match_clk_mt6797_img,
65	},
66};
67
68builtin_platform_driver(clk_mt6797_img_drv);
69