1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Author: Shunli Wang <shunli.wang@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/mt2701-clk.h>
14 
15 static const struct mtk_gate_regs img_cg_regs = {
16 	.set_ofs = 0x0004,
17 	.clr_ofs = 0x0008,
18 	.sta_ofs = 0x0000,
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_SMI_COMM, "img_smi_comm", "mm_sel", 0),
32 	GATE_IMG(CLK_IMG_RESZ, "img_resz", "mm_sel", 1),
33 	GATE_IMG(CLK_IMG_JPGDEC_SMI, "img_jpgdec_smi", "mm_sel", 5),
34 	GATE_IMG(CLK_IMG_JPGDEC, "img_jpgdec", "mm_sel", 6),
35 	GATE_IMG(CLK_IMG_VENC_LT, "img_venc_lt", "mm_sel", 8),
36 	GATE_IMG(CLK_IMG_VENC, "img_venc", "mm_sel", 9),
37 };
38 
39 static const struct of_device_id of_match_clk_mt2701_img[] = {
40 	{ .compatible = "mediatek,mt2701-imgsys", },
41 	{}
42 };
43 
44 static int clk_mt2701_img_probe(struct platform_device *pdev)
45 {
46 	struct clk_onecell_data *clk_data;
47 	int r;
48 	struct device_node *node = pdev->dev.of_node;
49 
50 	clk_data = mtk_alloc_clk_data(CLK_IMG_NR);
51 
52 	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
53 						clk_data);
54 
55 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
56 	if (r)
57 		dev_err(&pdev->dev,
58 			"could not register clock provider: %s: %d\n",
59 			pdev->name, r);
60 
61 	return r;
62 }
63 
64 static struct platform_driver clk_mt2701_img_drv = {
65 	.probe = clk_mt2701_img_probe,
66 	.driver = {
67 		.name = "clk-mt2701-img",
68 		.of_match_table = of_match_clk_mt2701_img,
69 	},
70 };
71 
72 builtin_platform_driver(clk_mt2701_img_drv);
73