1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (c) 2018 MediaTek Inc.
 4 * Author: Sean Wang <sean.wang@mediatek.com>
 5 *
 6 */
 7
 8#include <linux/clk-provider.h>
 9#include <linux/of.h>
10#include <linux/of_address.h>
11#include <linux/of_device.h>
12#include <linux/platform_device.h>
13
14#include "clk-mtk.h"
15#include "clk-gate.h"
16
17#include <dt-bindings/clock/mt2701-clk.h>
18
19#define GATE_G3D(_id, _name, _parent, _shift) {	\
20		.id = _id,				\
21		.name = _name,				\
22		.parent_name = _parent,			\
23		.regs = &g3d_cg_regs,			\
24		.shift = _shift,			\
25		.ops = &mtk_clk_gate_ops_setclr,	\
26	}
27
28static const struct mtk_gate_regs g3d_cg_regs = {
29	.sta_ofs = 0x0,
30	.set_ofs = 0x4,
31	.clr_ofs = 0x8,
32};
33
34static const struct mtk_gate g3d_clks[] = {
35	GATE_G3D(CLK_G3DSYS_CORE, "g3d_core", "mfg_sel", 0),
36};
37
38static int clk_mt2701_g3dsys_init(struct platform_device *pdev)
39{
40	struct clk_onecell_data *clk_data;
41	struct device_node *node = pdev->dev.of_node;
42	int r;
43
44	clk_data = mtk_alloc_clk_data(CLK_G3DSYS_NR);
45
46	mtk_clk_register_gates(node, g3d_clks, ARRAY_SIZE(g3d_clks),
47			       clk_data);
48
49	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
50	if (r)
51		dev_err(&pdev->dev,
52			"could not register clock provider: %s: %d\n",
53			pdev->name, r);
54
55	mtk_register_reset_controller(node, 1, 0xc);
56
57	return r;
58}
59
60static const struct of_device_id of_match_clk_mt2701_g3d[] = {
61	{
62		.compatible = "mediatek,mt2701-g3dsys",
63		.data = clk_mt2701_g3dsys_init,
64	}, {
65		/* sentinel */
66	}
67};
68
69static int clk_mt2701_g3d_probe(struct platform_device *pdev)
70{
71	int (*clk_init)(struct platform_device *);
72	int r;
73
74	clk_init = of_device_get_match_data(&pdev->dev);
75	if (!clk_init)
76		return -EINVAL;
77
78	r = clk_init(pdev);
79	if (r)
80		dev_err(&pdev->dev,
81			"could not register clock provider: %s: %d\n",
82			pdev->name, r);
83
84	return r;
85}
86
87static struct platform_driver clk_mt2701_g3d_drv = {
88	.probe = clk_mt2701_g3d_probe,
89	.driver = {
90		.name = "clk-mt2701-g3d",
91		.of_match_table = of_match_clk_mt2701_g3d,
92	},
93};
94
95builtin_platform_driver(clk_mt2701_g3d_drv);