1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2018 MediaTek Inc.
4  * Author: Owen Chen <owen.chen@mediatek.com>
5  */
6 
7 #include <linux/clk-provider.h>
8 #include <linux/platform_device.h>
9 
10 #include "clk-mtk.h"
11 #include "clk-gate.h"
12 
13 #include <dt-bindings/clock/mt6765-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 		.id = _id,				\
29 		.name = _name,				\
30 		.parent_name = _parent,			\
31 		.regs = &audio0_cg_regs,		\
32 		.shift = _shift,			\
33 		.ops = &mtk_clk_gate_ops_no_setclr,	\
34 	}
35 
36 #define GATE_AUDIO1(_id, _name, _parent, _shift) {	\
37 		.id = _id,				\
38 		.name = _name,				\
39 		.parent_name = _parent,			\
40 		.regs = &audio1_cg_regs,		\
41 		.shift = _shift,			\
42 		.ops = &mtk_clk_gate_ops_no_setclr,	\
43 	}
44 
45 static const struct mtk_gate audio_clks[] = {
46 	/* AUDIO0 */
47 	GATE_AUDIO0(CLK_AUDIO_AFE, "aud_afe", "audio_ck", 2),
48 	GATE_AUDIO0(CLK_AUDIO_22M, "aud_22m", "aud_engen1_ck", 8),
49 	GATE_AUDIO0(CLK_AUDIO_APLL_TUNER, "aud_apll_tuner",
50 		    "aud_engen1_ck", 19),
51 	GATE_AUDIO0(CLK_AUDIO_ADC, "aud_adc", "audio_ck", 24),
52 	GATE_AUDIO0(CLK_AUDIO_DAC, "aud_dac", "audio_ck", 25),
53 	GATE_AUDIO0(CLK_AUDIO_DAC_PREDIS, "aud_dac_predis",
54 		    "audio_ck", 26),
55 	GATE_AUDIO0(CLK_AUDIO_TML, "aud_tml", "audio_ck", 27),
56 	/* AUDIO1 */
57 	GATE_AUDIO1(CLK_AUDIO_I2S1_BCLK, "aud_i2s1_bclk",
58 		    "audio_ck", 4),
59 	GATE_AUDIO1(CLK_AUDIO_I2S2_BCLK, "aud_i2s2_bclk",
60 		    "audio_ck", 5),
61 	GATE_AUDIO1(CLK_AUDIO_I2S3_BCLK, "aud_i2s3_bclk",
62 		    "audio_ck", 6),
63 	GATE_AUDIO1(CLK_AUDIO_I2S4_BCLK, "aud_i2s4_bclk",
64 		    "audio_ck", 7),
65 };
66 
67 static const struct mtk_clk_desc audio_desc = {
68 	.clks = audio_clks,
69 	.num_clks = ARRAY_SIZE(audio_clks),
70 };
71 
72 static const struct of_device_id of_match_clk_mt6765_audio[] = {
73 	{
74 		.compatible = "mediatek,mt6765-audsys",
75 		.data = &audio_desc,
76 	}, {
77 		/* sentinel */
78 	}
79 };
80 
81 static struct platform_driver clk_mt6765_audio_drv = {
82 	.probe = mtk_clk_simple_probe,
83 	.remove = mtk_clk_simple_remove,
84 	.driver = {
85 		.name = "clk-mt6765-audio",
86 		.of_match_table = of_match_clk_mt6765_audio,
87 	},
88 };
89 
90 builtin_platform_driver(clk_mt6765_audio_drv);
91