tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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);