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