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
15 static const struct mtk_gate_regs audio0_cg_regs = {
16 .set_ofs = 0x0,
17 .clr_ofs = 0x0,
18 .sta_ofs = 0x0,
19 };
20
21 static 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
35 static 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
clk_mt8183_audio_probe(struct platform_device * pdev)70 static int clk_mt8183_audio_probe(struct platform_device *pdev)
71 {
72 struct clk_onecell_data *clk_data;
73 int r;
74 struct device_node *node = pdev->dev.of_node;
75
76 clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
77
78 mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
79 clk_data);
80
81 r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
82 if (r)
83 return r;
84
85 r = devm_of_platform_populate(&pdev->dev);
86 if (r)
87 of_clk_del_provider(node);
88
89 return r;
90 }
91
92 static const struct of_device_id of_match_clk_mt8183_audio[] = {
93 { .compatible = "mediatek,mt8183-audiosys", },
94 {}
95 };
96
97 static struct platform_driver clk_mt8183_audio_drv = {
98 .probe = clk_mt8183_audio_probe,
99 .driver = {
100 .name = "clk-mt8183-audio",
101 .of_match_table = of_match_clk_mt8183_audio,
102 },
103 };
104
105 builtin_platform_driver(clk_mt8183_audio_drv);
106