kernel/sound/soc/tegra/tegra30_i2s.h

   1 /*
   2  * tegra30_i2s.h - Definitions for Tegra30 I2S driver
   3  *
   4  * Copyright (c) 2011,2012, NVIDIA CORPORATION.  All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __TEGRA30_I2S_H__
  20 #define __TEGRA30_I2S_H__
  21
  22 #include "tegra_pcm.h"
  23
  24 /* Register offsets from TEGRA30_I2S*_BASE */
  25
  26 #define TEGRA30_I2S_CTRL                                0x0
  27 #define TEGRA30_I2S_TIMING                              0x4
  28 #define TEGRA30_I2S_OFFSET                              0x08
  29 #define TEGRA30_I2S_CH_CTRL                             0x0c
  30 #define TEGRA30_I2S_SLOT_CTRL                           0x10
  31 #define TEGRA30_I2S_CIF_RX_CTRL                         0x14
  32 #define TEGRA30_I2S_CIF_TX_CTRL                         0x18
  33 #define TEGRA30_I2S_FLOWCTL                             0x1c
  34 #define TEGRA30_I2S_TX_STEP                             0x20
  35 #define TEGRA30_I2S_FLOW_STATUS                         0x24
  36 #define TEGRA30_I2S_FLOW_TOTAL                          0x28
  37 #define TEGRA30_I2S_FLOW_OVER                           0x2c
  38 #define TEGRA30_I2S_FLOW_UNDER                          0x30
  39 #define TEGRA30_I2S_LCOEF_1_4_0                         0x34
  40 #define TEGRA30_I2S_LCOEF_1_4_1                         0x38
  41 #define TEGRA30_I2S_LCOEF_1_4_2                         0x3c
  42 #define TEGRA30_I2S_LCOEF_1_4_3                         0x40
  43 #define TEGRA30_I2S_LCOEF_1_4_4                         0x44
  44 #define TEGRA30_I2S_LCOEF_1_4_5                         0x48
  45 #define TEGRA30_I2S_LCOEF_2_4_0                         0x4c
  46 #define TEGRA30_I2S_LCOEF_2_4_1                         0x50
  47 #define TEGRA30_I2S_LCOEF_2_4_2                         0x54
  48
  49 /* Fields in TEGRA30_I2S_CTRL */
  50
  51 #define TEGRA30_I2S_CTRL_XFER_EN_TX                     (1 << 31)
  52 #define TEGRA30_I2S_CTRL_XFER_EN_RX                     (1 << 30)
  53 #define TEGRA30_I2S_CTRL_CG_EN                          (1 << 29)
  54 #define TEGRA30_I2S_CTRL_SOFT_RESET                     (1 << 28)
  55 #define TEGRA30_I2S_CTRL_TX_FLOWCTL_EN                  (1 << 27)
  56
  57 #define TEGRA30_I2S_CTRL_OBS_SEL_SHIFT                  24
  58 #define TEGRA30_I2S_CTRL_OBS_SEL_MASK                   (7 << TEGRA30_I2S_CTRL_OBS_SEL_SHIFT)
  59
  60 #define TEGRA30_I2S_FRAME_FORMAT_LRCK                   0
  61 #define TEGRA30_I2S_FRAME_FORMAT_FSYNC                  1
  62
  63 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT             12
  64 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK              (7                              << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
  65 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK              (TEGRA30_I2S_FRAME_FORMAT_LRCK  << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
  66 #define TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC             (TEGRA30_I2S_FRAME_FORMAT_FSYNC << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
  67
  68 #define TEGRA30_I2S_CTRL_MASTER_ENABLE                  (1 << 10)
  69
  70 #define TEGRA30_I2S_LRCK_LEFT_LOW                       0
  71 #define TEGRA30_I2S_LRCK_RIGHT_LOW                      1
  72
  73 #define TEGRA30_I2S_CTRL_LRCK_SHIFT                     9
  74 #define TEGRA30_I2S_CTRL_LRCK_MASK                      (1                          << TEGRA30_I2S_CTRL_LRCK_SHIFT)
  75 #define TEGRA30_I2S_CTRL_LRCK_L_LOW                     (TEGRA30_I2S_LRCK_LEFT_LOW  << TEGRA30_I2S_CTRL_LRCK_SHIFT)
  76 #define TEGRA30_I2S_CTRL_LRCK_R_LOW                     (TEGRA30_I2S_LRCK_RIGHT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
  77
  78 #define TEGRA30_I2S_CTRL_LPBK_ENABLE                    (1 << 8)
  79
  80 #define TEGRA30_I2S_BIT_CODE_LINEAR                     0
  81 #define TEGRA30_I2S_BIT_CODE_ULAW                       1
  82 #define TEGRA30_I2S_BIT_CODE_ALAW                       2
  83
  84 #define TEGRA30_I2S_CTRL_BIT_CODE_SHIFT                 4
  85 #define TEGRA30_I2S_CTRL_BIT_CODE_MASK                  (3                           << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
  86 #define TEGRA30_I2S_CTRL_BIT_CODE_LINEAR                (TEGRA30_I2S_BIT_CODE_LINEAR << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
  87 #define TEGRA30_I2S_CTRL_BIT_CODE_ULAW                  (TEGRA30_I2S_BIT_CODE_ULAW   << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
  88 #define TEGRA30_I2S_CTRL_BIT_CODE_ALAW                  (TEGRA30_I2S_BIT_CODE_ALAW   << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
  89
  90 #define TEGRA30_I2S_BITS_8                              1
  91 #define TEGRA30_I2S_BITS_12                             2
  92 #define TEGRA30_I2S_BITS_16                             3
  93 #define TEGRA30_I2S_BITS_20                             4
  94 #define TEGRA30_I2S_BITS_24                             5
  95 #define TEGRA30_I2S_BITS_28                             6
  96 #define TEGRA30_I2S_BITS_32                             7
  97
  98 /* Sample container size; see {RX,TX}_MASK field in CH_CTRL below */
  99 #define TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT                 0
 100 #define TEGRA30_I2S_CTRL_BIT_SIZE_MASK                  (7                   << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 101 #define TEGRA30_I2S_CTRL_BIT_SIZE_8                     (TEGRA30_I2S_BITS_8  << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 102 #define TEGRA30_I2S_CTRL_BIT_SIZE_12                    (TEGRA30_I2S_BITS_12 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 103 #define TEGRA30_I2S_CTRL_BIT_SIZE_16                    (TEGRA30_I2S_BITS_16 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 104 #define TEGRA30_I2S_CTRL_BIT_SIZE_20                    (TEGRA30_I2S_BITS_20 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 105 #define TEGRA30_I2S_CTRL_BIT_SIZE_24                    (TEGRA30_I2S_BITS_24 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 106 #define TEGRA30_I2S_CTRL_BIT_SIZE_28                    (TEGRA30_I2S_BITS_28 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 107 #define TEGRA30_I2S_CTRL_BIT_SIZE_32                    (TEGRA30_I2S_BITS_32 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
 108
 109 /* Fields in TEGRA30_I2S_TIMING */
 110
 111 #define TEGRA30_I2S_TIMING_NON_SYM_ENABLE               (1 << 12)
 112 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT      0
 113 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US    0x7ff
 114 #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK       (TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
 115
 116 /* Fields in TEGRA30_I2S_OFFSET */
 117
 118 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT         16
 119 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US       0x7ff
 120 #define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK          (TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT)
 121 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT         0
 122 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US       0x7ff
 123 #define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK          (TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT)
 124
 125 /* Fields in TEGRA30_I2S_CH_CTRL */
 126
 127 /* (FSYNC width - 1) in bit clocks */
 128 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT           24
 129 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US         0xff
 130 #define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK            (TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US << TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT)
 131
 132 #define TEGRA30_I2S_HIGHZ_NO                            0
 133 #define TEGRA30_I2S_HIGHZ_YES                           1
 134 #define TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK               2
 135
 136 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT            12
 137 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_MASK             (3                                 << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
 138 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_NO               (TEGRA30_I2S_HIGHZ_NO              << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
 139 #define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_YES              (TEGRA30_I2S_HIGHZ_YES             << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
 140 #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)
 141
 142 #define TEGRA30_I2S_MSB_FIRST                           0
 143 #define TEGRA30_I2S_LSB_FIRST                           1
 144
 145 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT          10
 146 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MASK           (1                     << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
 147 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MSB_FIRST      (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
 148 #define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_LSB_FIRST      (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
 149 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT          9
 150 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MASK           (1                     << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
 151 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MSB_FIRST      (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
 152 #define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_LSB_FIRST      (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
 153
 154 #define TEGRA30_I2S_POS_EDGE                            0
 155 #define TEGRA30_I2S_NEG_EDGE                            1
 156
 157 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT             8
 158 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_MASK              (1                    << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
 159 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_POS_EDGE          (TEGRA30_I2S_POS_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
 160 #define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_NEG_EDGE          (TEGRA30_I2S_NEG_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
 161
 162 /* Sample size is # bits from BIT_SIZE minus this field */
 163 #define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT          4
 164 #define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US        7
 165 #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)
 166
 167 #define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT          0
 168 #define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US        7
 169 #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)
 170
 171 /* Fields in TEGRA30_I2S_SLOT_CTRL */
 172
 173 /* Number of slots in frame, minus 1 */
 174 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT         16
 175 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK_US       7
 176 #define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK          (TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_MASK_US << TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_SHIFT)
 177
 178 /* TDM mode slot enable bitmask */
 179 #define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT     8
 180 #define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_MASK      (0xff << TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT)
 181
 182 #define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT     0
 183 #define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_MASK      (0xff << TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT)
 184
 185 /* Fields in TEGRA30_I2S_CIF_RX_CTRL */
 186 /* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
 187
 188 /* Fields in TEGRA30_I2S_CIF_TX_CTRL */
 189 /* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
 190
 191 /* Fields in TEGRA30_I2S_FLOWCTL */
 192
 193 #define TEGRA30_I2S_FILTER_LINEAR                       0
 194 #define TEGRA30_I2S_FILTER_QUAD                         1
 195
 196 #define TEGRA30_I2S_FLOWCTL_FILTER_SHIFT                31
 197 #define TEGRA30_I2S_FLOWCTL_FILTER_MASK                 (1                         << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
 198 #define TEGRA30_I2S_FLOWCTL_FILTER_LINEAR               (TEGRA30_I2S_FILTER_LINEAR << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
 199 #define TEGRA30_I2S_FLOWCTL_FILTER_QUAD                 (TEGRA30_I2S_FILTER_QUAD   << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
 200
 201 /* Fields in TEGRA30_I2S_TX_STEP */
 202
 203 #define TEGRA30_I2S_TX_STEP_SHIFT                       0
 204 #define TEGRA30_I2S_TX_STEP_MASK_US                     0xffff
 205 #define TEGRA30_I2S_TX_STEP_MASK                        (TEGRA30_I2S_TX_STEP_MASK_US << TEGRA30_I2S_TX_STEP_SHIFT)
 206
 207 /* Fields in TEGRA30_I2S_FLOW_STATUS */
 208
 209 #define TEGRA30_I2S_FLOW_STATUS_UNDERFLOW               (1 << 31)
 210 #define TEGRA30_I2S_FLOW_STATUS_OVERFLOW                (1 << 30)
 211 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_INT_EN          (1 << 4)
 212 #define TEGRA30_I2S_FLOW_STATUS_COUNTER_CLR             (1 << 3)
 213 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_CLR             (1 << 2)
 214 #define TEGRA30_I2S_FLOW_STATUS_COUNTER_EN              (1 << 1)
 215 #define TEGRA30_I2S_FLOW_STATUS_MONITOR_EN              (1 << 0)
 216
 217 /*
 218  * There are no fields in TEGRA30_I2S_FLOW_TOTAL, TEGRA30_I2S_FLOW_OVER,
 219  * TEGRA30_I2S_FLOW_UNDER; they are counters taking the whole register.
 220  */
 221
 222 /* Fields in TEGRA30_I2S_LCOEF_* */
 223
 224 #define TEGRA30_I2S_LCOEF_COEF_SHIFT                    0
 225 #define TEGRA30_I2S_LCOEF_COEF_MASK_US                  0xffff
 226 #define TEGRA30_I2S_LCOEF_COEF_MASK                     (TEGRA30_I2S_LCOEF_COEF_MASK_US << TEGRA30_I2S_LCOEF_COEF_SHIFT)
 227
 228 struct tegra30_i2s_soc_data {
 229         void (*set_audio_cif)(struct regmap *regmap,
 230                               unsigned int reg,
 231                               struct tegra30_ahub_cif_conf *conf);
 232 };
 233
 234 struct tegra30_i2s {
 235         const struct tegra30_i2s_soc_data *soc_data;
 236         struct snd_soc_dai_driver dai;
 237         int cif_id;
 238         struct clk *clk_i2s;
 239         enum tegra30_ahub_txcif capture_i2s_cif;
 240         enum tegra30_ahub_rxcif capture_fifo_cif;
 241         char capture_dma_chan[8];
 242         struct snd_dmaengine_dai_dma_data capture_dma_data;
 243         enum tegra30_ahub_rxcif playback_i2s_cif;
 244         enum tegra30_ahub_txcif playback_fifo_cif;
 245         char playback_dma_chan[8];
 246         struct snd_dmaengine_dai_dma_data playback_dma_data;
 247         struct regmap *regmap;
 248         struct snd_dmaengine_pcm_config dma_config;
 249 };
 250
 251 #endif