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 
11 #include "clk-mtk.h"
12 #include "clk-gate.h"
13 
14 #include <dt-bindings/clock/mt6779-clk.h>
15 
16 static const struct mtk_gate_regs vdec0_cg_regs = {
17 	.set_ofs = 0x0000,
18 	.clr_ofs = 0x0004,
19 	.sta_ofs = 0x0000,
20 };
21 
22 static const struct mtk_gate_regs vdec1_cg_regs = {
23 	.set_ofs = 0x0008,
24 	.clr_ofs = 0x000c,
25 	.sta_ofs = 0x0008,
26 };
27 
28 #define GATE_VDEC0_I(_id, _name, _parent, _shift)		\
29 	GATE_MTK(_id, _name, _parent, &vdec0_cg_regs, _shift,	\
30 		&mtk_clk_gate_ops_setclr_inv)
31 #define GATE_VDEC1_I(_id, _name, _parent, _shift)		\
32 	GATE_MTK(_id, _name, _parent, &vdec1_cg_regs, _shift,	\
33 		&mtk_clk_gate_ops_setclr_inv)
34 
35 static const struct mtk_gate vdec_clks[] = {
36 	/* VDEC0 */
37 	GATE_VDEC0_I(CLK_VDEC_VDEC, "vdec_cken", "vdec_sel", 0),
38 	/* VDEC1 */
39 	GATE_VDEC1_I(CLK_VDEC_LARB1, "vdec_larb1_cken", "vdec_sel", 0),
40 };
41 
42 static const struct of_device_id of_match_clk_mt6779_vdec[] = {
43 	{ .compatible = "mediatek,mt6779-vdecsys", },
44 	{}
45 };
46 
47 static int clk_mt6779_vdec_probe(struct platform_device *pdev)
48 {
49 	struct clk_onecell_data *clk_data;
50 	struct device_node *node = pdev->dev.of_node;
51 
52 	clk_data = mtk_alloc_clk_data(CLK_VDEC_GCON_NR_CLK);
53 
54 	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
55 			       clk_data);
56 
57 	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
58 }
59 
60 static struct platform_driver clk_mt6779_vdec_drv = {
61 	.probe = clk_mt6779_vdec_probe,
62 	.driver = {
63 		.name = "clk-mt6779-vdec",
64 		.of_match_table = of_match_clk_mt6779_vdec,
65 	},
66 };
67 
68 module_platform_driver(clk_mt6779_vdec_drv);
69 MODULE_LICENSE("GPL");
70