1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2019 MediaTek Inc.
4  * Author: Wendell Lin <wendell.lin@mediatek.com>
5  */
6 
7 #include <linux/module.h>
8 #include <linux/clk-provider.h>
9 #include <linux/of.h>
10 #include <linux/of_address.h>
11 #include <linux/of_device.h>
12 #include <linux/platform_device.h>
13 
14 #include "clk-mtk.h"
15 #include "clk-gate.h"
16 
17 #include <dt-bindings/clock/mt6779-clk.h>
18 
19 static const struct mtk_gate_regs audio0_cg_regs = {
20 	.set_ofs = 0x0,
21 	.clr_ofs = 0x0,
22 	.sta_ofs = 0x0,
23 };
24 
25 static const struct mtk_gate_regs audio1_cg_regs = {
26 	.set_ofs = 0x4,
27 	.clr_ofs = 0x4,
28 	.sta_ofs = 0x4,
29 };
30 
31 #define GATE_AUDIO0(_id, _name, _parent, _shift)		\
32 	GATE_MTK(_id, _name, _parent, &audio0_cg_regs, _shift,	\
33 		&mtk_clk_gate_ops_no_setclr)
34 #define GATE_AUDIO1(_id, _name, _parent, _shift)		\
35 	GATE_MTK(_id, _name, _parent, &audio1_cg_regs, _shift,	\
36 		&mtk_clk_gate_ops_no_setclr)
37 
38 static const struct mtk_gate audio_clks[] = {
39 	/* AUDIO0 */
40 	GATE_AUDIO0(CLK_AUD_AFE, "aud_afe", "audio_sel", 2),
41 	GATE_AUDIO0(CLK_AUD_22M, "aud_22m", "aud_eng1_sel", 8),
42 	GATE_AUDIO0(CLK_AUD_24M, "aud_24m", "aud_eng2_sel", 9),
43 	GATE_AUDIO0(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner",
44 		    "aud_eng2_sel", 18),
45 	GATE_AUDIO0(CLK_AUD_APLL_TUNER, "aud_apll_tuner",
46 		    "aud_eng1_sel", 19),
47 	GATE_AUDIO0(CLK_AUD_TDM, "aud_tdm", "aud_eng1_sel", 20),
48 	GATE_AUDIO0(CLK_AUD_ADC, "aud_adc", "audio_sel", 24),
49 	GATE_AUDIO0(CLK_AUD_DAC, "aud_dac", "audio_sel", 25),
50 	GATE_AUDIO0(CLK_AUD_DAC_PREDIS, "aud_dac_predis",
51 		    "audio_sel", 26),
52 	GATE_AUDIO0(CLK_AUD_TML, "aud_tml", "audio_sel", 27),
53 	GATE_AUDIO0(CLK_AUD_NLE, "aud_nle", "audio_sel", 28),
54 	/* AUDIO1 */
55 	GATE_AUDIO1(CLK_AUD_I2S1_BCLK_SW, "aud_i2s1_bclk",
56 		    "audio_sel", 4),
57 	GATE_AUDIO1(CLK_AUD_I2S2_BCLK_SW, "aud_i2s2_bclk",
58 		    "audio_sel", 5),
59 	GATE_AUDIO1(CLK_AUD_I2S3_BCLK_SW, "aud_i2s3_bclk",
60 		    "audio_sel", 6),
61 	GATE_AUDIO1(CLK_AUD_I2S4_BCLK_SW, "aud_i2s4_bclk",
62 		    "audio_sel", 7),
63 	GATE_AUDIO1(CLK_AUD_I2S5_BCLK_SW, "aud_i2s5_bclk",
64 		    "audio_sel", 8),
65 	GATE_AUDIO1(CLK_AUD_CONN_I2S_ASRC, "aud_conn_i2s",
66 		    "audio_sel", 12),
67 	GATE_AUDIO1(CLK_AUD_GENERAL1_ASRC, "aud_general1",
68 		    "audio_sel", 13),
69 	GATE_AUDIO1(CLK_AUD_GENERAL2_ASRC, "aud_general2",
70 		    "audio_sel", 14),
71 	GATE_AUDIO1(CLK_AUD_DAC_HIRES, "aud_dac_hires",
72 		    "audio_h_sel", 15),
73 	GATE_AUDIO1(CLK_AUD_ADC_HIRES, "aud_adc_hires",
74 		    "audio_h_sel", 16),
75 	GATE_AUDIO1(CLK_AUD_ADC_HIRES_TML, "aud_adc_hires_tml",
76 		    "audio_h_sel", 17),
77 	GATE_AUDIO1(CLK_AUD_PDN_ADDA6_ADC, "aud_pdn_adda6_adc",
78 		    "audio_sel", 20),
79 	GATE_AUDIO1(CLK_AUD_ADDA6_ADC_HIRES, "aud_adda6_adc_hires",
80 		    "audio_h_sel",
81 		    21),
82 	GATE_AUDIO1(CLK_AUD_3RD_DAC, "aud_3rd_dac", "audio_sel",
83 		    28),
84 	GATE_AUDIO1(CLK_AUD_3RD_DAC_PREDIS, "aud_3rd_dac_predis",
85 		    "audio_sel", 29),
86 	GATE_AUDIO1(CLK_AUD_3RD_DAC_TML, "aud_3rd_dac_tml",
87 		    "audio_sel", 30),
88 	GATE_AUDIO1(CLK_AUD_3RD_DAC_HIRES, "aud_3rd_dac_hires",
89 		    "audio_h_sel", 31),
90 };
91 
92 static const struct of_device_id of_match_clk_mt6779_aud[] = {
93 	{ .compatible = "mediatek,mt6779-audio", },
94 	{}
95 };
96 
97 static int clk_mt6779_aud_probe(struct platform_device *pdev)
98 {
99 	struct clk_onecell_data *clk_data;
100 	struct device_node *node = pdev->dev.of_node;
101 
102 	clk_data = mtk_alloc_clk_data(CLK_AUD_NR_CLK);
103 
104 	mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
105 			       clk_data);
106 
107 	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
108 }
109 
110 static struct platform_driver clk_mt6779_aud_drv = {
111 	.probe = clk_mt6779_aud_probe,
112 	.driver = {
113 		.name = "clk-mt6779-aud",
114 		.of_match_table = of_match_clk_mt6779_aud,
115 	},
116 };
117 
118 module_platform_driver(clk_mt6779_aud_drv);
119 MODULE_LICENSE("GPL");
120