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 cam_cg_regs = {
16 	.set_ofs = 0x4,
17 	.clr_ofs = 0x8,
18 	.sta_ofs = 0x0,
19 };
20 
21 #define GATE_CAM(_id, _name, _parent, _shift) {		\
22 		.id = _id,				\
23 		.name = _name,				\
24 		.parent_name = _parent,			\
25 		.regs = &cam_cg_regs,			\
26 		.shift = _shift,			\
27 		.ops = &mtk_clk_gate_ops_setclr,	\
28 	}
29 
30 static const struct mtk_gate cam_clks[] = {
31 	GATE_CAM(CLK_CAM_LARB3, "cam_larb3", "mm_ck", 0),
32 	GATE_CAM(CLK_CAM_DFP_VAD, "cam_dfp_vad", "mm_ck", 1),
33 	GATE_CAM(CLK_CAM, "cam", "mm_ck", 6),
34 	GATE_CAM(CLK_CAMTG, "camtg", "mm_ck", 7),
35 	GATE_CAM(CLK_CAM_SENINF, "cam_seninf", "mm_ck", 8),
36 	GATE_CAM(CLK_CAMSV0, "camsv0", "mm_ck", 9),
37 	GATE_CAM(CLK_CAMSV1, "camsv1", "mm_ck", 10),
38 	GATE_CAM(CLK_CAMSV2, "camsv2", "mm_ck", 11),
39 	GATE_CAM(CLK_CAM_CCU, "cam_ccu", "mm_ck", 12),
40 };
41 
clk_mt6765_cam_probe(struct platform_device * pdev)42 static int clk_mt6765_cam_probe(struct platform_device *pdev)
43 {
44 	struct clk_onecell_data *clk_data;
45 	int r;
46 	struct device_node *node = pdev->dev.of_node;
47 
48 	clk_data = mtk_alloc_clk_data(CLK_CAM_NR_CLK);
49 
50 	mtk_clk_register_gates(node, cam_clks, ARRAY_SIZE(cam_clks), clk_data);
51 
52 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
53 
54 	if (r)
55 		pr_err("%s(): could not register clock provider: %d\n",
56 		       __func__, r);
57 
58 	return r;
59 }
60 
61 static const struct of_device_id of_match_clk_mt6765_cam[] = {
62 	{ .compatible = "mediatek,mt6765-camsys", },
63 	{}
64 };
65 
66 static struct platform_driver clk_mt6765_cam_drv = {
67 	.probe = clk_mt6765_cam_probe,
68 	.driver = {
69 		.name = "clk-mt6765-cam",
70 		.of_match_table = of_match_clk_mt6765_cam,
71 	},
72 };
73 
74 builtin_platform_driver(clk_mt6765_cam_drv);
75