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 
70 static const struct mtk_clk_desc audio_desc = {
71 	.clks = audio_clks,
72 	.num_clks = ARRAY_SIZE(audio_clks),
73 };
74 
clk_mt8183_audio_probe(struct platform_device * pdev)75 static 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(&pdev->dev);
84 	if (r)
85 		mtk_clk_simple_remove(pdev);
86 
87 	return r;
88 }
89 
clk_mt8183_audio_remove(struct platform_device * pdev)90 static void clk_mt8183_audio_remove(struct platform_device *pdev)
91 {
92 	of_platform_depopulate(&pdev->dev);
93 	mtk_clk_simple_remove(pdev);
94 }
95 
96 static const struct of_device_id of_match_clk_mt8183_audio[] = {
97 	{ .compatible = "mediatek,mt8183-audiosys", .data = &audio_desc },
98 	{ /* sentinel */ }
99 };
100 MODULE_DEVICE_TABLE(of, of_match_clk_mt8183_audio);
101 
102 static 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 };
110 module_platform_driver(clk_mt8183_audio_drv);
111 MODULE_LICENSE("GPL");
112