1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * tegra30_i2s.h - Definitions for Tegra30 I2S driver
4 *
5 * Copyright (c) 2011,2012, NVIDIA CORPORATION. All rights reserved.
6 */
7
8 #ifndef __TEGRA30_I2S_H__
9 #define __TEGRA30_I2S_H__
10
11 #include "tegra_pcm.h"
12
13 /* Register offsets from TEGRA30_I2S*_BASE */
14
15 #define TEGRA30_I2S_CTRL 0x0
16 #define TEGRA30_I2S_TIMING 0x4
17 #define TEGRA30_I2S_OFFSET 0x08
18 #define TEGRA30_I2S_CH_CTRL 0x0c
19 #define TEGRA30_I2S_SLOT_CTRL 0x10
20 #define TEGRA30_I2S_CIF_RX_CTRL 0x14
21 #define TEGRA30_I2S_CIF_TX_CTRL 0x18
22 #define TEGRA30_I2S_FLOWCTL 0x1c
23 #define TEGRA30_I2S_TX_STEP 0x20
24 #define TEGRA30_I2S_FLOW_STATUS 0x24
25 #define TEGRA30_I2S_FLOW_TOTAL 0x28
26 #define TEGRA30_I2S_FLOW_OVER 0x2c
27 #define TEGRA30_I2S_FLOW_UNDER 0x30
28 #define TEGRA30_I2S_LCOEF_1_4_0 0x34
29 #define TEGRA30_I2S_LCOEF_1_4_1 0x38
30 #define TEGRA30_I2S_LCOEF_1_4_2 0x3c
31 #define TEGRA30_I2S_LCOEF_1_4_3 0x40
32 #define TEGRA30_I2S_LCOEF_1_4_4 0x44
33 #define TEGRA30_I2S_LCOEF_1_4_5 0x48
34 #define TEGRA30_I2S_LCOEF_2_4_0 0x4c
35 #define TEGRA30_I2S_LCOEF_2_4_1 0x50
36 #define TEGRA30_I2S_LCOEF_2_4_2 0x54
37
38 /* Fields in TEGRA30_I2S_CTRL */
39
40 #define TEGRA30_I2S_CTRL_XFER_EN_TX (1 << 31)
41 #define TEGRA30_I2S_CTRL_XFER_EN_RX (1 << 30)
42 #define TEGRA30_I2S_CTRL_CG_EN (1 << 29)
43 #define TEGRA30_I2S_CTRL_SOFT_RESET (1 << 28)
44 #define TEGRA30_I2S_CTRL_TX_FLOWCTL_EN (1 << 27)
45
46 #define TEGRA30_I2S_CTRL_OBS_SEL_SHIFT 24
47 #define TEGRA30_I2S_CTRL_OBS_SEL_MASK (7 << TEGRA30_I2S_CTRL_OBS_SEL_SHIFT)
48
49 #define TEGRA30_I2S_FRAME_FORMAT_LRCK 0
50 #define TEGRA30_I2S_FRAME_FORMAT_FSYNC 1
51
52 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT 12
53 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK (7 << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
54 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK (TEGRA30_I2S_FRAME_FORMAT_LRCK << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
55 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC (TEGRA30_I2S_FRAME_FORMAT_FSYNC << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
56
57 #define TEGRA30_I2S_CTRL_MASTER_ENABLE (1 << 10)
58
59 #define TEGRA30_I2S_LRCK_LEFT_LOW 0
60 #define TEGRA30_I2S_LRCK_RIGHT_LOW 1
61
62 #define TEGRA30_I2S_CTRL_LRCK_SHIFT 9
63 #define TEGRA30_I2S_CTRL_LRCK_MASK (1 << TEGRA30_I2S_CTRL_LRCK_SHIFT)
64 #define TEGRA30_I2S_CTRL_LRCK_L_LOW (TEGRA30_I2S_LRCK_LEFT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
65 #define TEGRA30_I2S_CTRL_LRCK_R_LOW (TEGRA30_I2S_LRCK_RIGHT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
66
67 #define TEGRA30_I2S_CTRL_LPBK_ENABLE (1 << 8)
68
69 #define TEGRA30_I2S_BIT_CODE_LINEAR 0
70 #define TEGRA30_I2S_BIT_CODE_ULAW 1
71 #define TEGRA30_I2S_BIT_CODE_ALAW 2
72
73 #define TEGRA30_I2S_CTRL_BIT_CODE_SHIFT 4
74 #define TEGRA30_I2S_CTRL_BIT_CODE_MASK (3 << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
75 #define TEGRA30_I2S_CTRL_BIT_CODE_LINEAR (TEGRA30_I2S_BIT_CODE_LINEAR << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
76 #define TEGRA30_I2S_CTRL_BIT_CODE_ULAW (TEGRA30_I2S_BIT_CODE_ULAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
77 #define TEGRA30_I2S_CTRL_BIT_CODE_ALAW (TEGRA30_I2S_BIT_CODE_ALAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
78
79 #define TEGRA30_I2S_BITS_8 1
80 #define TEGRA30_I2S_BITS_12 2
81 #define TEGRA30_I2S_BITS_16 3
82 #define TEGRA30_I2S_BITS_20 4
83 #define TEGRA30_I2S_BITS_24 5
84 #define TEGRA30_I2S_BITS_28 6
85 #define TEGRA30_I2S_BITS_32 7
86
87 /* Sample container size; see {RX,TX}_MASK field in CH_CTRL below */
88 #define TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT 0
89 #define TEGRA30_I2S_CTRL_BIT_SIZE_MASK (7 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
90 #define TEGRA30_I2S_CTRL_BIT_SIZE_8 (TEGRA30_I2S_BITS_8 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
91 #define TEGRA30_I2S_CTRL_BIT_SIZE_12 (TEGRA30_I2S_BITS_12 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
92 #define TEGRA30_I2S_CTRL_BIT_SIZE_16 (TEGRA30_I2S_BITS_16 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
93 #define TEGRA30_I2S_CTRL_BIT_SIZE_20 (TEGRA30_I2S_BITS_20 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
94 #define TEGRA30_I2S_CTRL_BIT_SIZE_24 (TEGRA30_I2S_BITS_24 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
95 #define TEGRA30_I2S_CTRL_BIT_SIZE_28 (TEGRA30_I2S_BITS_28 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
96 #define TEGRA30_I2S_CTRL_BIT_SIZE_32 (TEGRA30_I2S_BITS_32 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
97
98 /* Fields in TEGRA30_I2S_TIMING */
99
100 #define TEGRA30_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
101 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
102 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7ff
103 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
104
105 /* Fields in TEGRA30_I2S_OFFSET */
106
107 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT 16
108 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US 0x7ff
109 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT)
110 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT 0
111 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US 0x7ff
112 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT)
113
114 /* Fields in TEGRA30_I2S_CH_CTRL */
115
116 /* (FSYNC width - 1) in bit clocks */
117 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT 24
118 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US 0xff
119 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK (TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US << TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT)
120
121 #define TEGRA30_I2S_HIGHZ_NO 0
122 #define TEGRA30_I2S_HIGHZ_YES 1
123 #define TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK 2
124
125 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT 12
126 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_MASK (3 << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
127 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_NO (TEGRA30_I2S_HIGHZ_NO << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
128 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_YES (TEGRA30_I2S_HIGHZ_YES << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
129 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_ON_HALF_BIT_CLK (TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
130
131 #define TEGRA30_I2S_MSB_FIRST 0
132 #define TEGRA30_I2S_LSB_FIRST 1
133
134 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT 10
135 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
136 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
137 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
138 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT 9
139 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
140 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
141 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
142
143 #define TEGRA30_I2S_POS_EDGE 0
144 #define TEGRA30_I2S_NEG_EDGE 1
145
146 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT 8
147 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_MASK (1 << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
148 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_POS_EDGE (TEGRA30_I2S_POS_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
149 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_NEG_EDGE (TEGRA30_I2S_NEG_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
150
151 /* Sample size is # bits from BIT_SIZE minus this field */
152 #define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT 4
153 #define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US 7
154 #define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT)
155
156 #define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT 0
157 #define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US 7
158 #define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT)
159
160 /* Fields in TEGRA30_I2S_SLOT_CTRL */
161
162 /* Number of slots in frame, minus 1 */
163 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT 16
164 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK_US 7
165 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK (TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK_US << TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT)
166
167 /* TDM mode slot enable bitmask */
168 #define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT 8
169 #define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT)
170
171 #define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT 0
172 #define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT)
173
174 /* Fields in TEGRA30_I2S_CIF_RX_CTRL */
175 /* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
176
177 /* Fields in TEGRA30_I2S_CIF_TX_CTRL */
178 /* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
179
180 /* Fields in TEGRA30_I2S_FLOWCTL */
181
182 #define TEGRA30_I2S_FILTER_LINEAR 0
183 #define TEGRA30_I2S_FILTER_QUAD 1
184
185 #define TEGRA30_I2S_FLOWCTL_FILTER_SHIFT 31
186 #define TEGRA30_I2S_FLOWCTL_FILTER_MASK (1 << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
187 #define TEGRA30_I2S_FLOWCTL_FILTER_LINEAR (TEGRA30_I2S_FILTER_LINEAR << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
188 #define TEGRA30_I2S_FLOWCTL_FILTER_QUAD (TEGRA30_I2S_FILTER_QUAD << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
189
190 /* Fields in TEGRA30_I2S_TX_STEP */
191
192 #define TEGRA30_I2S_TX_STEP_SHIFT 0
193 #define TEGRA30_I2S_TX_STEP_MASK_US 0xffff
194 #define TEGRA30_I2S_TX_STEP_MASK (TEGRA30_I2S_TX_STEP_MASK_US << TEGRA30_I2S_TX_STEP_SHIFT)
195
196 /* Fields in TEGRA30_I2S_FLOW_STATUS */
197
198 #define TEGRA30_I2S_FLOW_STATUS_UNDERFLOW (1 << 31)
199 #define TEGRA30_I2S_FLOW_STATUS_OVERFLOW (1 << 30)
200 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_INT_EN (1 << 4)
201 #define TEGRA30_I2S_FLOW_STATUS_COUNTER_CLR (1 << 3)
202 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_CLR (1 << 2)
203 #define TEGRA30_I2S_FLOW_STATUS_COUNTER_EN (1 << 1)
204 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_EN (1 << 0)
205
206 /*
207 * There are no fields in TEGRA30_I2S_FLOW_TOTAL, TEGRA30_I2S_FLOW_OVER,
208 * TEGRA30_I2S_FLOW_UNDER; they are counters taking the whole register.
209 */
210
211 /* Fields in TEGRA30_I2S_LCOEF_* */
212
213 #define TEGRA30_I2S_LCOEF_COEF_SHIFT 0
214 #define TEGRA30_I2S_LCOEF_COEF_MASK_US 0xffff
215 #define TEGRA30_I2S_LCOEF_COEF_MASK (TEGRA30_I2S_LCOEF_COEF_MASK_US << TEGRA30_I2S_LCOEF_COEF_SHIFT)
216
217 struct tegra30_i2s_soc_data {
218 void (*set_audio_cif)(struct regmap *regmap,
219 unsigned int reg,
220 struct tegra30_ahub_cif_conf *conf);
221 };
222
223 struct tegra30_i2s {
224 const struct tegra30_i2s_soc_data *soc_data;
225 struct snd_soc_dai_driver dai;
226 int cif_id;
227 struct clk *clk_i2s;
228 enum tegra30_ahub_txcif capture_i2s_cif;
229 enum tegra30_ahub_rxcif capture_fifo_cif;
230 char capture_dma_chan[8];
231 struct snd_dmaengine_dai_dma_data capture_dma_data;
232 enum tegra30_ahub_rxcif playback_i2s_cif;
233 enum tegra30_ahub_txcif playback_fifo_cif;
234 char playback_dma_chan[8];
235 struct snd_dmaengine_dai_dma_data playback_dma_data;
236 struct regmap *regmap;
237 struct snd_dmaengine_pcm_config dma_config;
238 };
239
240 #endif
241
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