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 int clk_mt8183_audio_probe(struct platform_device *pdev)
71 {
72 	struct clk_hw_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_hw_provider(node, of_clk_hw_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