1/*
 2 * Copyright (c) 2014 MediaTek Inc.
 3 * Author: Shunli Wang <shunli.wang@mediatek.com>
 4 *
 5 * This program is free software; you can redistribute it and/or modify
 6 * it under the terms of the GNU General Public License version 2 as
 7 * published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 */
14
15#include <linux/clk-provider.h>
16#include <linux/platform_device.h>
17
18#include "clk-mtk.h"
19#include "clk-gate.h"
20
21#include <dt-bindings/clock/mt2701-clk.h>
22
23static const struct mtk_gate_regs vdec0_cg_regs = {
24	.set_ofs = 0x0000,
25	.clr_ofs = 0x0004,
26	.sta_ofs = 0x0000,
27};
28
29static const struct mtk_gate_regs vdec1_cg_regs = {
30	.set_ofs = 0x0008,
31	.clr_ofs = 0x000c,
32	.sta_ofs = 0x0008,
33};
34
35#define GATE_VDEC0(_id, _name, _parent, _shift) {	\
36		.id = _id,				\
37		.name = _name,				\
38		.parent_name = _parent,			\
39		.regs = &vdec0_cg_regs,			\
40		.shift = _shift,			\
41		.ops = &mtk_clk_gate_ops_setclr_inv,	\
42	}
43
44#define GATE_VDEC1(_id, _name, _parent, _shift) {	\
45		.id = _id,				\
46		.name = _name,				\
47		.parent_name = _parent,			\
48		.regs = &vdec1_cg_regs,			\
49		.shift = _shift,			\
50		.ops = &mtk_clk_gate_ops_setclr_inv,	\
51	}
52
53static const struct mtk_gate vdec_clks[] = {
54	GATE_VDEC0(CLK_VDEC_CKGEN, "vdec_cken", "vdec_sel", 0),
55	GATE_VDEC1(CLK_VDEC_LARB, "vdec_larb_cken", "mm_sel", 0),
56};
57
58static const struct of_device_id of_match_clk_mt2701_vdec[] = {
59	{ .compatible = "mediatek,mt2701-vdecsys", },
60	{}
61};
62
63static int clk_mt2701_vdec_probe(struct platform_device *pdev)
64{
65	struct clk_onecell_data *clk_data;
66	int r;
67	struct device_node *node = pdev->dev.of_node;
68
69	clk_data = mtk_alloc_clk_data(CLK_VDEC_NR);
70
71	mtk_clk_register_gates(node, vdec_clks, ARRAY_SIZE(vdec_clks),
72						clk_data);
73
74	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
75	if (r)
76		dev_err(&pdev->dev,
77			"could not register clock provider: %s: %d\n",
78			pdev->name, r);
79
80	return r;
81}
82
83static struct platform_driver clk_mt2701_vdec_drv = {
84	.probe = clk_mt2701_vdec_probe,
85	.driver = {
86		.name = "clk-mt2701-vdec",
87		.of_match_table = of_match_clk_mt2701_vdec,
88	},
89};
90
91builtin_platform_driver(clk_mt2701_vdec_drv);