1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2018 MediaTek Inc.
4  * Author: Owen Chen <owen.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/mt6765-clk.h>
14 
15 static const struct mtk_gate_regs img_cg_regs = {
16 	.set_ofs = 0x4,
17 	.clr_ofs = 0x8,
18 	.sta_ofs = 0x0,
19 };
20 
21 #define GATE_IMG(_id, _name, _parent, _shift) {		\
22 		.id = _id,				\
23 		.name = _name,				\
24 		.parent_name = _parent,			\
25 		.regs = &img_cg_regs,			\
26 		.shift = _shift,			\
27 		.ops = &mtk_clk_gate_ops_setclr,	\
28 	}
29 
30 static const struct mtk_gate img_clks[] = {
31 	GATE_IMG(CLK_IMG_LARB2, "img_larb2", "mm_ck", 0),
32 	GATE_IMG(CLK_IMG_DIP, "img_dip", "mm_ck", 2),
33 	GATE_IMG(CLK_IMG_FDVT, "img_fdvt", "mm_ck", 3),
34 	GATE_IMG(CLK_IMG_DPE, "img_dpe", "mm_ck", 4),
35 	GATE_IMG(CLK_IMG_RSC, "img_rsc", "mm_ck", 5),
36 };
37 
38 static int clk_mt6765_img_probe(struct platform_device *pdev)
39 {
40 	struct clk_onecell_data *clk_data;
41 	int r;
42 	struct device_node *node = pdev->dev.of_node;
43 
44 	clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
45 
46 	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks), clk_data);
47 
48 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
49 
50 	if (r)
51 		pr_err("%s(): could not register clock provider: %d\n",
52 		       __func__, r);
53 
54 	return r;
55 }
56 
57 static const struct of_device_id of_match_clk_mt6765_img[] = {
58 	{ .compatible = "mediatek,mt6765-imgsys", },
59 	{}
60 };
61 
62 static struct platform_driver clk_mt6765_img_drv = {
63 	.probe = clk_mt6765_img_probe,
64 	.driver = {
65 		.name = "clk-mt6765-img",
66 		.of_match_table = of_match_clk_mt6765_img,
67 	},
68 };
69 
70 builtin_platform_driver(clk_mt6765_img_drv);
71