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 venc_cg_regs = {
16 	.set_ofs = 0x4,
17 	.clr_ofs = 0x8,
18 	.sta_ofs = 0x0,
19 };
20 
21 #define GATE_VENC(_id, _name, _parent, _shift) {	\
22 		.id = _id,				\
23 		.name = _name,				\
24 		.parent_name = _parent,			\
25 		.regs = &venc_cg_regs,			\
26 		.shift = _shift,			\
27 		.ops = &mtk_clk_gate_ops_setclr_inv,	\
28 	}
29 
30 static const struct mtk_gate venc_clks[] = {
31 	GATE_VENC(CLK_VENC_SMI_COMMON_CON, "venc_smi", "mm_sel", 0),
32 	GATE_VENC(CLK_VENC_VENC, "venc_venc", "venc_sel", 4),
33 	GATE_VENC(CLK_VENC_SMI_LARB6, "venc_smi_larb6", "jpgdec_sel", 12),
34 };
35 
36 static int clk_mt2712_venc_probe(struct platform_device *pdev)
37 {
38 	struct clk_onecell_data *clk_data;
39 	int r;
40 	struct device_node *node = pdev->dev.of_node;
41 
42 	clk_data = mtk_alloc_clk_data(CLK_VENC_NR_CLK);
43 
44 	mtk_clk_register_gates(node, venc_clks, ARRAY_SIZE(venc_clks),
45 			clk_data);
46 
47 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
48 
49 	if (r != 0)
50 		pr_err("%s(): could not register clock provider: %d\n",
51 			__func__, r);
52 
53 	return r;
54 }
55 
56 static const struct of_device_id of_match_clk_mt2712_venc[] = {
57 	{ .compatible = "mediatek,mt2712-vencsys", },
58 	{}
59 };
60 
61 static struct platform_driver clk_mt2712_venc_drv = {
62 	.probe = clk_mt2712_venc_probe,
63 	.driver = {
64 		.name = "clk-mt2712-venc",
65 		.of_match_table = of_match_clk_mt2712_venc,
66 	},
67 };
68 
69 builtin_platform_driver(clk_mt2712_venc_drv);
70