1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * mt8195-audsys-clk.h  --  Mediatek 8195 audsys clock control
4  *
5  * Copyright (c) 2021 MediaTek Inc.
6  * Author: Trevor Wu <trevor.wu@mediatek.com>
7  */
8 
9 #include <linux/clk.h>
10 #include <linux/clk-provider.h>
11 #include <linux/clkdev.h>
12 #include "mt8195-afe-common.h"
13 #include "mt8195-audsys-clk.h"
14 #include "mt8195-audsys-clkid.h"
15 #include "mt8195-reg.h"
16 
17 struct afe_gate {
18 	int id;
19 	const char *name;
20 	const char *parent_name;
21 	int reg;
22 	u8 bit;
23 	const struct clk_ops *ops;
24 	unsigned long flags;
25 	u8 cg_flags;
26 };
27 
28 #define GATE_AFE_FLAGS(_id, _name, _parent, _reg, _bit, _flags, _cgflags) {\
29 		.id = _id,					\
30 		.name = _name,					\
31 		.parent_name = _parent,				\
32 		.reg = _reg,					\
33 		.bit = _bit,					\
34 		.flags = _flags,				\
35 		.cg_flags = _cgflags,				\
36 	}
37 
38 #define GATE_AFE(_id, _name, _parent, _reg, _bit)		\
39 	GATE_AFE_FLAGS(_id, _name, _parent, _reg, _bit,		\
40 		       CLK_SET_RATE_PARENT, CLK_GATE_SET_TO_DISABLE)
41 
42 #define GATE_AUD0(_id, _name, _parent, _bit)			\
43 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON0, _bit)
44 
45 #define GATE_AUD1(_id, _name, _parent, _bit)			\
46 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON1, _bit)
47 
48 #define GATE_AUD3(_id, _name, _parent, _bit)			\
49 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON3, _bit)
50 
51 #define GATE_AUD4(_id, _name, _parent, _bit)			\
52 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON4, _bit)
53 
54 #define GATE_AUD5(_id, _name, _parent, _bit)			\
55 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON5, _bit)
56 
57 #define GATE_AUD6(_id, _name, _parent, _bit)			\
58 	GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON6, _bit)
59 
60 static const struct afe_gate aud_clks[CLK_AUD_NR_CLK] = {
61 	/* AUD0 */
62 	GATE_AUD0(CLK_AUD_AFE, "aud_afe", "top_a1sys_hp", 2),
63 	GATE_AUD0(CLK_AUD_LRCK_CNT, "aud_lrck_cnt", "top_a1sys_hp", 4),
64 	GATE_AUD0(CLK_AUD_SPDIFIN_TUNER_APLL, "aud_spdifin_tuner_apll", "top_apll4", 10),
65 	GATE_AUD0(CLK_AUD_SPDIFIN_TUNER_DBG, "aud_spdifin_tuner_dbg", "top_apll4", 11),
66 	GATE_AUD0(CLK_AUD_UL_TML, "aud_ul_tml", "top_a1sys_hp", 18),
67 	GATE_AUD0(CLK_AUD_APLL1_TUNER, "aud_apll1_tuner", "top_apll1", 19),
68 	GATE_AUD0(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner", "top_apll2", 20),
69 	GATE_AUD0(CLK_AUD_TOP0_SPDF, "aud_top0_spdf", "top_aud_iec_clk", 21),
70 	GATE_AUD0(CLK_AUD_APLL, "aud_apll", "top_apll1", 23),
71 	GATE_AUD0(CLK_AUD_APLL2, "aud_apll2", "top_apll2", 24),
72 	GATE_AUD0(CLK_AUD_DAC, "aud_dac", "top_a1sys_hp", 25),
73 	GATE_AUD0(CLK_AUD_DAC_PREDIS, "aud_dac_predis", "top_a1sys_hp", 26),
74 	GATE_AUD0(CLK_AUD_TML, "aud_tml", "top_a1sys_hp", 27),
75 	GATE_AUD0(CLK_AUD_ADC, "aud_adc", "top_a1sys_hp", 28),
76 	GATE_AUD0(CLK_AUD_DAC_HIRES, "aud_dac_hires", "top_audio_h", 31),
77 
78 	/* AUD1 */
79 	GATE_AUD1(CLK_AUD_A1SYS_HP, "aud_a1sys_hp", "top_a1sys_hp", 2),
80 	GATE_AUD1(CLK_AUD_AFE_DMIC1, "aud_afe_dmic1", "top_a1sys_hp", 10),
81 	GATE_AUD1(CLK_AUD_AFE_DMIC2, "aud_afe_dmic2", "top_a1sys_hp", 11),
82 	GATE_AUD1(CLK_AUD_AFE_DMIC3, "aud_afe_dmic3", "top_a1sys_hp", 12),
83 	GATE_AUD1(CLK_AUD_AFE_DMIC4, "aud_afe_dmic4", "top_a1sys_hp", 13),
84 	GATE_AUD1(CLK_AUD_AFE_26M_DMIC_TM, "aud_afe_26m_dmic_tm", "top_a1sys_hp", 14),
85 	GATE_AUD1(CLK_AUD_UL_TML_HIRES, "aud_ul_tml_hires", "top_audio_h", 16),
86 	GATE_AUD1(CLK_AUD_ADC_HIRES, "aud_adc_hires", "top_audio_h", 17),
87 	GATE_AUD1(CLK_AUD_ADDA6_ADC, "aud_adda6_adc", "top_a1sys_hp", 18),
88 	GATE_AUD1(CLK_AUD_ADDA6_ADC_HIRES, "aud_adda6_adc_hires", "top_audio_h", 19),
89 
90 	/* AUD3 */
91 	GATE_AUD3(CLK_AUD_LINEIN_TUNER, "aud_linein_tuner", "top_apll5", 5),
92 	GATE_AUD3(CLK_AUD_EARC_TUNER, "aud_earc_tuner", "top_apll3", 7),
93 
94 	/* AUD4 */
95 	GATE_AUD4(CLK_AUD_I2SIN, "aud_i2sin", "top_a1sys_hp", 0),
96 	GATE_AUD4(CLK_AUD_TDM_IN, "aud_tdm_in", "top_a1sys_hp", 1),
97 	GATE_AUD4(CLK_AUD_I2S_OUT, "aud_i2s_out", "top_a1sys_hp", 6),
98 	GATE_AUD4(CLK_AUD_TDM_OUT, "aud_tdm_out", "top_a1sys_hp", 7),
99 	GATE_AUD4(CLK_AUD_HDMI_OUT, "aud_hdmi_out", "top_a1sys_hp", 8),
100 	GATE_AUD4(CLK_AUD_ASRC11, "aud_asrc11", "top_a1sys_hp", 16),
101 	GATE_AUD4(CLK_AUD_ASRC12, "aud_asrc12", "top_a1sys_hp", 17),
102 	GATE_AUD4(CLK_AUD_MULTI_IN, "aud_multi_in", "mphone_slave_b", 19),
103 	GATE_AUD4(CLK_AUD_INTDIR, "aud_intdir", "top_intdir", 20),
104 	GATE_AUD4(CLK_AUD_A1SYS, "aud_a1sys", "top_a1sys_hp", 21),
105 	GATE_AUD4(CLK_AUD_A2SYS, "aud_a2sys", "top_a2sys_hf", 22),
106 	GATE_AUD4(CLK_AUD_PCMIF, "aud_pcmif", "top_a1sys_hp", 24),
107 	GATE_AUD4(CLK_AUD_A3SYS, "aud_a3sys", "top_a3sys_hf", 30),
108 	GATE_AUD4(CLK_AUD_A4SYS, "aud_a4sys", "top_a4sys_hf", 31),
109 
110 	/* AUD5 */
111 	GATE_AUD5(CLK_AUD_MEMIF_UL1, "aud_memif_ul1", "top_a1sys_hp", 0),
112 	GATE_AUD5(CLK_AUD_MEMIF_UL2, "aud_memif_ul2", "top_a1sys_hp", 1),
113 	GATE_AUD5(CLK_AUD_MEMIF_UL3, "aud_memif_ul3", "top_a1sys_hp", 2),
114 	GATE_AUD5(CLK_AUD_MEMIF_UL4, "aud_memif_ul4", "top_a1sys_hp", 3),
115 	GATE_AUD5(CLK_AUD_MEMIF_UL5, "aud_memif_ul5", "top_a1sys_hp", 4),
116 	GATE_AUD5(CLK_AUD_MEMIF_UL6, "aud_memif_ul6", "top_a1sys_hp", 5),
117 	GATE_AUD5(CLK_AUD_MEMIF_UL8, "aud_memif_ul8", "top_a1sys_hp", 7),
118 	GATE_AUD5(CLK_AUD_MEMIF_UL9, "aud_memif_ul9", "top_a1sys_hp", 8),
119 	GATE_AUD5(CLK_AUD_MEMIF_UL10, "aud_memif_ul10", "top_a1sys_hp", 9),
120 	GATE_AUD5(CLK_AUD_MEMIF_DL2, "aud_memif_dl2", "top_a1sys_hp", 18),
121 	GATE_AUD5(CLK_AUD_MEMIF_DL3, "aud_memif_dl3", "top_a1sys_hp", 19),
122 	GATE_AUD5(CLK_AUD_MEMIF_DL6, "aud_memif_dl6", "top_a1sys_hp", 22),
123 	GATE_AUD5(CLK_AUD_MEMIF_DL7, "aud_memif_dl7", "top_a1sys_hp", 23),
124 	GATE_AUD5(CLK_AUD_MEMIF_DL8, "aud_memif_dl8", "top_a1sys_hp", 24),
125 	GATE_AUD5(CLK_AUD_MEMIF_DL10, "aud_memif_dl10", "top_a1sys_hp", 26),
126 	GATE_AUD5(CLK_AUD_MEMIF_DL11, "aud_memif_dl11", "top_a1sys_hp", 27),
127 
128 	/* AUD6 */
129 	GATE_AUD6(CLK_AUD_GASRC0, "aud_gasrc0", "top_asm_h", 0),
130 	GATE_AUD6(CLK_AUD_GASRC1, "aud_gasrc1", "top_asm_h", 1),
131 	GATE_AUD6(CLK_AUD_GASRC2, "aud_gasrc2", "top_asm_h", 2),
132 	GATE_AUD6(CLK_AUD_GASRC3, "aud_gasrc3", "top_asm_h", 3),
133 	GATE_AUD6(CLK_AUD_GASRC4, "aud_gasrc4", "top_asm_h", 4),
134 	GATE_AUD6(CLK_AUD_GASRC5, "aud_gasrc5", "top_asm_h", 5),
135 	GATE_AUD6(CLK_AUD_GASRC6, "aud_gasrc6", "top_asm_h", 6),
136 	GATE_AUD6(CLK_AUD_GASRC7, "aud_gasrc7", "top_asm_h", 7),
137 	GATE_AUD6(CLK_AUD_GASRC8, "aud_gasrc8", "top_asm_h", 8),
138 	GATE_AUD6(CLK_AUD_GASRC9, "aud_gasrc9", "top_asm_h", 9),
139 	GATE_AUD6(CLK_AUD_GASRC10, "aud_gasrc10", "top_asm_h", 10),
140 	GATE_AUD6(CLK_AUD_GASRC11, "aud_gasrc11", "top_asm_h", 11),
141 	GATE_AUD6(CLK_AUD_GASRC12, "aud_gasrc12", "top_asm_h", 12),
142 	GATE_AUD6(CLK_AUD_GASRC13, "aud_gasrc13", "top_asm_h", 13),
143 	GATE_AUD6(CLK_AUD_GASRC14, "aud_gasrc14", "top_asm_h", 14),
144 	GATE_AUD6(CLK_AUD_GASRC15, "aud_gasrc15", "top_asm_h", 15),
145 	GATE_AUD6(CLK_AUD_GASRC16, "aud_gasrc16", "top_asm_h", 16),
146 	GATE_AUD6(CLK_AUD_GASRC17, "aud_gasrc17", "top_asm_h", 17),
147 	GATE_AUD6(CLK_AUD_GASRC18, "aud_gasrc18", "top_asm_h", 18),
148 	GATE_AUD6(CLK_AUD_GASRC19, "aud_gasrc19", "top_asm_h", 19),
149 };
150 
mt8195_audsys_clk_register(struct mtk_base_afe * afe)151 int mt8195_audsys_clk_register(struct mtk_base_afe *afe)
152 {
153 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
154 	struct clk *clk;
155 	struct clk_lookup *cl;
156 	int i;
157 
158 	afe_priv->lookup = devm_kcalloc(afe->dev, CLK_AUD_NR_CLK,
159 					sizeof(*afe_priv->lookup),
160 					GFP_KERNEL);
161 
162 	if (!afe_priv->lookup)
163 		return -ENOMEM;
164 
165 	for (i = 0; i < ARRAY_SIZE(aud_clks); i++) {
166 		const struct afe_gate *gate = &aud_clks[i];
167 
168 		clk = clk_register_gate(afe->dev, gate->name, gate->parent_name,
169 					gate->flags, afe->base_addr + gate->reg,
170 					gate->bit, gate->cg_flags, NULL);
171 
172 		if (IS_ERR(clk)) {
173 			dev_err(afe->dev, "Failed to register clk %s: %ld\n",
174 				gate->name, PTR_ERR(clk));
175 			continue;
176 		}
177 
178 		/* add clk_lookup for devm_clk_get(SND_SOC_DAPM_CLOCK_SUPPLY) */
179 		cl = kzalloc(sizeof(*cl), GFP_KERNEL);
180 		if (!cl)
181 			return -ENOMEM;
182 
183 		cl->clk = clk;
184 		cl->con_id = gate->name;
185 		cl->dev_id = dev_name(afe->dev);
186 		clkdev_add(cl);
187 
188 		afe_priv->lookup[i] = cl;
189 	}
190 
191 	return 0;
192 }
193 
mt8195_audsys_clk_unregister(struct mtk_base_afe * afe)194 void mt8195_audsys_clk_unregister(struct mtk_base_afe *afe)
195 {
196 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
197 	struct clk *clk;
198 	struct clk_lookup *cl;
199 	int i;
200 
201 	if (!afe_priv)
202 		return;
203 
204 	for (i = 0; i < CLK_AUD_NR_CLK; i++) {
205 		cl = afe_priv->lookup[i];
206 		if (!cl)
207 			continue;
208 
209 		clk = cl->clk;
210 		clk_unregister_gate(clk);
211 
212 		clkdev_drop(cl);
213 	}
214 }
215