1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Copyright (c) 2022 Collabora Ltd.
5  * Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
6  */
7 
8 #include <dt-bindings/clock/mt8173-clk.h>
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include "clk-gate.h"
12 #include "clk-mtk.h"
13 
14 static const struct mtk_gate_regs venc_cg_regs = {
15 	.set_ofs = 0x4,
16 	.clr_ofs = 0x8,
17 	.sta_ofs = 0x0,
18 };
19 
20 #define GATE_VENC(_id, _name, _parent, _shift)			\
21 	GATE_MTK(_id, _name, _parent, &venc_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
22 
23 static const struct mtk_gate venc_clks[] = {
24 	GATE_DUMMY(CLK_DUMMY, "venc_dummy"),
25 	GATE_VENC(CLK_VENC_CKE0, "venc_cke0", "mm_sel", 0),
26 	GATE_VENC(CLK_VENC_CKE1, "venc_cke1", "venc_sel", 4),
27 	GATE_VENC(CLK_VENC_CKE2, "venc_cke2", "venc_sel", 8),
28 	GATE_VENC(CLK_VENC_CKE3, "venc_cke3", "venc_sel", 12),
29 };
30 
31 static const struct mtk_gate venclt_clks[] = {
32 	GATE_DUMMY(CLK_DUMMY, "venclt_dummy"),
33 	GATE_VENC(CLK_VENCLT_CKE0, "venclt_cke0", "mm_sel", 0),
34 	GATE_VENC(CLK_VENCLT_CKE1, "venclt_cke1", "venclt_sel", 4),
35 };
36 
37 static const struct mtk_clk_desc venc_desc = {
38 	.clks = venc_clks,
39 	.num_clks = ARRAY_SIZE(venc_clks),
40 };
41 
42 static const struct mtk_clk_desc venc_lt_desc = {
43 	.clks = venclt_clks,
44 	.num_clks = ARRAY_SIZE(venclt_clks),
45 };
46 
47 static const struct of_device_id of_match_clk_mt8173_vencsys[] = {
48 	{ .compatible = "mediatek,mt8173-vencsys", .data = &venc_desc },
49 	{ .compatible = "mediatek,mt8173-vencltsys", .data = &venc_lt_desc },
50 	{ /* sentinel */ }
51 };
52 MODULE_DEVICE_TABLE(of, of_match_clk_mt8173_vencsys);
53 
54 static struct platform_driver clk_mt8173_vencsys_drv = {
55 	.driver = {
56 		.name = "clk-mt8173-vencsys",
57 		.of_match_table = of_match_clk_mt8173_vencsys,
58 	},
59 	.probe = mtk_clk_simple_probe,
60 	.remove = mtk_clk_simple_remove,
61 };
62 module_platform_driver(clk_mt8173_vencsys_drv);
63 
64 MODULE_DESCRIPTION("MediaTek MT8173 vencsys clocks driver");
65 MODULE_LICENSE("GPL");
66