1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2017 MediaTek Inc.
4  * Author: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
14 
15 static const struct mtk_gate_regs vdec0_cg_regs = {
16 	.set_ofs = 0x0,
17 	.clr_ofs = 0x4,
18 	.sta_ofs = 0x0,
19 };
20 
21 static const struct mtk_gate_regs vdec1_cg_regs = {
22 	.set_ofs = 0x8,
23 	.clr_ofs = 0xc,
24 	.sta_ofs = 0x8,
25 };
26 
27 #define GATE_VDEC0(_id, _name, _parent, _shift) {	\
28 		.id = _id,				\
29 		.name = _name,				\
30 		.parent_name = _parent,			\
31 		.regs = &vdec0_cg_regs,			\
32 		.shift = _shift,			\
33 		.ops = &mtk_clk_gate_ops_setclr_inv,	\
34 	}
35 
36 #define GATE_VDEC1(_id, _name, _parent, _shift) {	\
37 		.id = _id,				\
38 		.name = _name,				\
39 		.parent_name = _parent,			\
40 		.regs = &vdec1_cg_regs,			\
41 		.shift = _shift,			\
42 		.ops = &mtk_clk_gate_ops_setclr_inv,	\
43 	}
44 
45 static const struct mtk_gate vdec_clks[] = {
46 	/* VDEC0 */
47 	GATE_VDEC0(CLK_VDEC_CKEN, "vdec_cken", "vdec_sel", 0),
48 	/* VDEC1 */
49 	GATE_VDEC1(CLK_VDEC_LARB1_CKEN, "vdec_larb1_cken", "vdec_sel", 0),
50 	GATE_VDEC1(CLK_VDEC_IMGRZ_CKEN, "vdec_imgrz_cken", "vdec_sel", 1),
51 };
52 
53 static int clk_mt2712_vdec_probe(struct platform_device *pdev)
54 {
55 	struct clk_hw_onecell_data *clk_data;
56 	int r;
57 	struct device_node *node = pdev->dev.of_node;
58 
59 	clk_data = mtk_alloc_clk_data(CLK_VDEC_NR_CLK);
60 
61 	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
62 			clk_data);
63 
64 	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
65 
66 	if (r != 0)
67 		pr_err("%s(): could not register clock provider: %d\n",
68 			__func__, r);
69 
70 	return r;
71 }
72 
73 static const struct of_device_id of_match_clk_mt2712_vdec[] = {
74 	{ .compatible = "mediatek,mt2712-vdecsys", },
75 	{}
76 };
77 
78 static struct platform_driver clk_mt2712_vdec_drv = {
79 	.probe = clk_mt2712_vdec_probe,
80 	.driver = {
81 		.name = "clk-mt2712-vdec",
82 		.of_match_table = of_match_clk_mt2712_vdec,
83 	},
84 };
85 
86 builtin_platform_driver(clk_mt2712_vdec_drv);
87