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 cam_cg_regs = {
15 	.set_ofs = 0x0004,
16 	.clr_ofs = 0x0008,
17 	.sta_ofs = 0x0000,
18 };
19 
20 #define GATE_CAM(_id, _name, _parent, _shift)			\
21 	GATE_MTK(_id, _name, _parent, &cam_cg_regs, _shift,	\
22 		&mtk_clk_gate_ops_setclr)
23 
24 static const struct mtk_gate cam_clks[] = {
25 	GATE_CAM(CLK_CAM_LARB10, "camsys_larb10", "cam_sel", 0),
26 	GATE_CAM(CLK_CAM_DFP_VAD, "camsys_dfp_vad", "cam_sel", 1),
27 	GATE_CAM(CLK_CAM_LARB11, "camsys_larb11", "cam_sel", 2),
28 	GATE_CAM(CLK_CAM_LARB9, "camsys_larb9", "cam_sel", 3),
29 	GATE_CAM(CLK_CAM_CAM, "camsys_cam", "cam_sel", 6),
30 	GATE_CAM(CLK_CAM_CAMTG, "camsys_camtg", "cam_sel", 7),
31 	GATE_CAM(CLK_CAM_SENINF, "camsys_seninf", "cam_sel", 8),
32 	GATE_CAM(CLK_CAM_CAMSV0, "camsys_camsv0", "cam_sel", 9),
33 	GATE_CAM(CLK_CAM_CAMSV1, "camsys_camsv1", "cam_sel", 10),
34 	GATE_CAM(CLK_CAM_CAMSV2, "camsys_camsv2", "cam_sel", 11),
35 	GATE_CAM(CLK_CAM_CAMSV3, "camsys_camsv3", "cam_sel", 12),
36 	GATE_CAM(CLK_CAM_CCU, "camsys_ccu", "cam_sel", 13),
37 	GATE_CAM(CLK_CAM_FAKE_ENG, "camsys_fake_eng", "cam_sel", 14),
38 };
39 
40 static const struct of_device_id of_match_clk_mt6779_cam[] = {
41 	{ .compatible = "mediatek,mt6779-camsys", },
42 	{}
43 };
44 
45 static int clk_mt6779_cam_probe(struct platform_device *pdev)
46 {
47 	struct clk_onecell_data *clk_data;
48 	struct device_node *node = pdev->dev.of_node;
49 
50 	clk_data = mtk_alloc_clk_data(CLK_CAM_NR_CLK);
51 
52 	mtk_clk_register_gates(node, cam_clks, ARRAY_SIZE(cam_clks),
53 			       clk_data);
54 
55 	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
56 }
57 
58 static struct platform_driver clk_mt6779_cam_drv = {
59 	.probe = clk_mt6779_cam_probe,
60 	.driver = {
61 		.name = "clk-mt6779-cam",
62 		.of_match_table = of_match_clk_mt6779_cam,
63 	},
64 };
65 
66 builtin_platform_driver(clk_mt6779_cam_drv);
67