1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2019 MediaTek Inc.
4  * Author: Wendell Lin <wendell.lin@mediatek.com>
5  */
6 
7 #include <linux/clk-provider.h>
8 #include <linux/platform_device.h>
9 #include <dt-bindings/clock/mt6779-clk.h>
10 
11 #include "clk-mtk.h"
12 #include "clk-gate.h"
13 
14 static const struct mtk_gate_regs img_cg_regs = {
15 	.set_ofs = 0x0004,
16 	.clr_ofs = 0x0008,
17 	.sta_ofs = 0x0000,
18 };
19 
20 #define GATE_IMG(_id, _name, _parent, _shift)			\
21 	GATE_MTK(_id, _name, _parent, &img_cg_regs, _shift,	\
22 		&mtk_clk_gate_ops_setclr)
23 
24 static const struct mtk_gate img_clks[] = {
25 	GATE_IMG(CLK_IMG_LARB5, "imgsys_larb5", "img_sel", 0),
26 	GATE_IMG(CLK_IMG_LARB6, "imgsys_larb6", "img_sel", 1),
27 	GATE_IMG(CLK_IMG_DIP, "imgsys_dip", "img_sel", 2),
28 	GATE_IMG(CLK_IMG_MFB, "imgsys_mfb", "img_sel", 6),
29 	GATE_IMG(CLK_IMG_WPE_A, "imgsys_wpe_a", "img_sel", 7),
30 };
31 
32 static const struct of_device_id of_match_clk_mt6779_img[] = {
33 	{ .compatible = "mediatek,mt6779-imgsys", },
34 	{}
35 };
36 
37 static int clk_mt6779_img_probe(struct platform_device *pdev)
38 {
39 	struct clk_onecell_data *clk_data;
40 	struct device_node *node = pdev->dev.of_node;
41 
42 	clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
43 
44 	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
45 			       clk_data);
46 
47 	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
48 }
49 
50 static struct platform_driver clk_mt6779_img_drv = {
51 	.probe = clk_mt6779_img_probe,
52 	.driver = {
53 		.name = "clk-mt6779-img",
54 		.of_match_table = of_match_clk_mt6779_img,
55 	},
56 };
57 
58 builtin_platform_driver(clk_mt6779_img_drv);
59