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/module.h>
8 #include <linux/clk-provider.h>
9 #include <linux/platform_device.h>
10 #include <dt-bindings/clock/mt6779-clk.h>
11 
12 #include "clk-mtk.h"
13 #include "clk-gate.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 	GATE_MTK(_id, _name, _parent, &img_cg_regs, _shift,	\
23 		&mtk_clk_gate_ops_setclr)
24 
25 static const struct mtk_gate img_clks[] = {
26 	GATE_IMG(CLK_IMG_LARB5, "imgsys_larb5", "img_sel", 0),
27 	GATE_IMG(CLK_IMG_LARB6, "imgsys_larb6", "img_sel", 1),
28 	GATE_IMG(CLK_IMG_DIP, "imgsys_dip", "img_sel", 2),
29 	GATE_IMG(CLK_IMG_MFB, "imgsys_mfb", "img_sel", 6),
30 	GATE_IMG(CLK_IMG_WPE_A, "imgsys_wpe_a", "img_sel", 7),
31 };
32 
33 static const struct of_device_id of_match_clk_mt6779_img[] = {
34 	{ .compatible = "mediatek,mt6779-imgsys", },
35 	{}
36 };
37 
38 static int clk_mt6779_img_probe(struct platform_device *pdev)
39 {
40 	struct clk_hw_onecell_data *clk_data;
41 	struct device_node *node = pdev->dev.of_node;
42 
43 	clk_data = mtk_alloc_clk_data(CLK_IMG_NR_CLK);
44 
45 	mtk_clk_register_gates(node, img_clks, ARRAY_SIZE(img_clks),
46 			       clk_data);
47 
48 	return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
49 }
50 
51 static struct platform_driver clk_mt6779_img_drv = {
52 	.probe = clk_mt6779_img_probe,
53 	.driver = {
54 		.name = "clk-mt6779-img",
55 		.of_match_table = of_match_clk_mt6779_img,
56 	},
57 };
58 
59 module_platform_driver(clk_mt6779_img_drv);
60 MODULE_LICENSE("GPL");
61