1// SPDX-License-Identifier: GPL-2.0
2//
3// Copyright (c) 2018 MediaTek Inc.
4// Author: Weiyi Lu <weiyi.lu@mediatek.com>
5
6#include <linux/clk-provider.h>
7#include <linux/of_platform.h>
8#include <linux/platform_device.h>
9
10#include "clk-mtk.h"
11#include "clk-gate.h"
12
13#include <dt-bindings/clock/mt8183-clk.h>
14
15static const struct mtk_gate_regs audio0_cg_regs = {
16 .set_ofs = 0x0,
17 .clr_ofs = 0x0,
18 .sta_ofs = 0x0,
19};
20
21static const struct mtk_gate_regs audio1_cg_regs = {
22 .set_ofs = 0x4,
23 .clr_ofs = 0x4,
24 .sta_ofs = 0x4,
25};
26
27#define GATE_AUDIO0(_id, _name, _parent, _shift) \
28 GATE_MTK(_id, _name, _parent, &audio0_cg_regs, _shift, \
29 &mtk_clk_gate_ops_no_setclr)
30
31#define GATE_AUDIO1(_id, _name, _parent, _shift) \
32 GATE_MTK(_id, _name, _parent, &audio1_cg_regs, _shift, \
33 &mtk_clk_gate_ops_no_setclr)
34
35static const struct mtk_gate audio_clks[] = {
36 /* AUDIO0 */
37 GATE_AUDIO0(CLK_AUDIO_AFE, "aud_afe", "audio_sel",
38 2),
39 GATE_AUDIO0(CLK_AUDIO_22M, "aud_22m", "aud_eng1_sel",
40 8),
41 GATE_AUDIO0(CLK_AUDIO_24M, "aud_24m", "aud_eng2_sel",
42 9),
43 GATE_AUDIO0(CLK_AUDIO_APLL2_TUNER, "aud_apll2_tuner", "aud_eng2_sel",
44 18),
45 GATE_AUDIO0(CLK_AUDIO_APLL_TUNER, "aud_apll_tuner", "aud_eng1_sel",
46 19),
47 GATE_AUDIO0(CLK_AUDIO_TDM, "aud_tdm", "apll12_divb",
48 20),
49 GATE_AUDIO0(CLK_AUDIO_ADC, "aud_adc", "audio_sel",
50 24),
51 GATE_AUDIO0(CLK_AUDIO_DAC, "aud_dac", "audio_sel",
52 25),
53 GATE_AUDIO0(CLK_AUDIO_DAC_PREDIS, "aud_dac_predis", "audio_sel",
54 26),
55 GATE_AUDIO0(CLK_AUDIO_TML, "aud_tml", "audio_sel",
56 27),
57 /* AUDIO1 */
58 GATE_AUDIO1(CLK_AUDIO_I2S1, "aud_i2s1", "audio_sel",
59 4),
60 GATE_AUDIO1(CLK_AUDIO_I2S2, "aud_i2s2", "audio_sel",
61 5),
62 GATE_AUDIO1(CLK_AUDIO_I2S3, "aud_i2s3", "audio_sel",
63 6),
64 GATE_AUDIO1(CLK_AUDIO_I2S4, "aud_i2s4", "audio_sel",
65 7),
66 GATE_AUDIO1(CLK_AUDIO_PDN_ADDA6_ADC, "aud_pdn_adda6_adc", "audio_sel",
67 20),
68};
69
70static const struct mtk_clk_desc audio_desc = {
71 .clks = audio_clks,
72 .num_clks = ARRAY_SIZE(audio_clks),
73};
74
75static int clk_mt8183_audio_probe(struct platform_device *pdev)
76{
77 int r;
78
79 r = mtk_clk_simple_probe(pdev);
80 if (r)
81 return r;
82
83 r = devm_of_platform_populate(dev: &pdev->dev);
84 if (r)
85 mtk_clk_simple_remove(pdev);
86
87 return r;
88}
89
90static void clk_mt8183_audio_remove(struct platform_device *pdev)
91{
92 of_platform_depopulate(parent: &pdev->dev);
93 mtk_clk_simple_remove(pdev);
94}
95
96static const struct of_device_id of_match_clk_mt8183_audio[] = {
97 { .compatible = "mediatek,mt8183-audiosys", .data = &audio_desc },
98 { /* sentinel */ }
99};
100MODULE_DEVICE_TABLE(of, of_match_clk_mt8183_audio);
101
102static struct platform_driver clk_mt8183_audio_drv = {
103 .probe = clk_mt8183_audio_probe,
104 .remove_new = clk_mt8183_audio_remove,
105 .driver = {
106 .name = "clk-mt8183-audio",
107 .of_match_table = of_match_clk_mt8183_audio,
108 },
109};
110module_platform_driver(clk_mt8183_audio_drv);
111MODULE_LICENSE("GPL");
112

source code of linux/drivers/clk/mediatek/clk-mt8183-audio.c