sound/soc/tegra/tegra_i2s.h

   1 /*
   2  * tegra_i2s.h - Definitions for Tegra I2S driver
   3  *
   4  * Author: Stephen Warren <swarren@nvidia.com>
   5  * Copyright (C) 2010 - NVIDIA, Inc.
   6  *
   7  * Based on code copyright/by:
   8  *
   9  * Copyright (c) 2009-2010, NVIDIA Corporation.
  10  * Scott Peterson <speterson@nvidia.com>
  11  *
  12  * Copyright (C) 2010 Google, Inc.
  13  * Iliyan Malchev <malchev@google.com>
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * version 2 as published by the Free Software Foundation.
  18  *
  19  * This program is distributed in the hope that it will be useful, but
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22  * General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  27  * 02110-1301 USA
  28  *
  29  */
  30
  31 #ifndef __TEGRA_I2S_H__
  32 #define __TEGRA_I2S_H__
  33
  34 #include "tegra_pcm.h"
  35
  36 /* Register offsets from TEGRA_I2S1_BASE and TEGRA_I2S2_BASE */
  37
  38 #define TEGRA_I2S_CTRL                                  0x00
  39 #define TEGRA_I2S_STATUS                                0x04
  40 #define TEGRA_I2S_TIMING                                0x08
  41 #define TEGRA_I2S_FIFO_SCR                              0x0c
  42 #define TEGRA_I2S_PCM_CTRL                              0x10
  43 #define TEGRA_I2S_NW_CTRL                               0x14
  44 #define TEGRA_I2S_TDM_CTRL                              0x20
  45 #define TEGRA_I2S_TDM_TX_RX_CTRL                        0x24
  46 #define TEGRA_I2S_FIFO1                                 0x40
  47 #define TEGRA_I2S_FIFO2                                 0x80
  48
  49 /* Fields in TEGRA_I2S_CTRL */
  50
  51 #define TEGRA_I2S_CTRL_FIFO2_TX_ENABLE                  (1 << 30)
  52 #define TEGRA_I2S_CTRL_FIFO1_ENABLE                     (1 << 29)
  53 #define TEGRA_I2S_CTRL_FIFO2_ENABLE                     (1 << 28)
  54 #define TEGRA_I2S_CTRL_FIFO1_RX_ENABLE                  (1 << 27)
  55 #define TEGRA_I2S_CTRL_FIFO_LPBK_ENABLE                 (1 << 26)
  56 #define TEGRA_I2S_CTRL_MASTER_ENABLE                    (1 << 25)
  57
  58 #define TEGRA_I2S_LRCK_LEFT_LOW                         0
  59 #define TEGRA_I2S_LRCK_RIGHT_LOW                        1
  60
  61 #define TEGRA_I2S_CTRL_LRCK_SHIFT                       24
  62 #define TEGRA_I2S_CTRL_LRCK_MASK                        (1                        << TEGRA_I2S_CTRL_LRCK_SHIFT)
  63 #define TEGRA_I2S_CTRL_LRCK_L_LOW                       (TEGRA_I2S_LRCK_LEFT_LOW  << TEGRA_I2S_CTRL_LRCK_SHIFT)
  64 #define TEGRA_I2S_CTRL_LRCK_R_LOW                       (TEGRA_I2S_LRCK_RIGHT_LOW << TEGRA_I2S_CTRL_LRCK_SHIFT)
  65
  66 #define TEGRA_I2S_BIT_FORMAT_I2S                        0
  67 #define TEGRA_I2S_BIT_FORMAT_RJM                        1
  68 #define TEGRA_I2S_BIT_FORMAT_LJM                        2
  69 #define TEGRA_I2S_BIT_FORMAT_DSP                        3
  70
  71 #define TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT                 10
  72 #define TEGRA_I2S_CTRL_BIT_FORMAT_MASK                  (3                        << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
  73 #define TEGRA_I2S_CTRL_BIT_FORMAT_I2S                   (TEGRA_I2S_BIT_FORMAT_I2S << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
  74 #define TEGRA_I2S_CTRL_BIT_FORMAT_RJM                   (TEGRA_I2S_BIT_FORMAT_RJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
  75 #define TEGRA_I2S_CTRL_BIT_FORMAT_LJM                   (TEGRA_I2S_BIT_FORMAT_LJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
  76 #define TEGRA_I2S_CTRL_BIT_FORMAT_DSP                   (TEGRA_I2S_BIT_FORMAT_DSP << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
  77
  78 #define TEGRA_I2S_BIT_SIZE_16                           0
  79 #define TEGRA_I2S_BIT_SIZE_20                           1
  80 #define TEGRA_I2S_BIT_SIZE_24                           2
  81 #define TEGRA_I2S_BIT_SIZE_32                           3
  82
  83 #define TEGRA_I2S_CTRL_BIT_SIZE_SHIFT                   8
  84 #define TEGRA_I2S_CTRL_BIT_SIZE_MASK                    (3                     << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
  85 #define TEGRA_I2S_CTRL_BIT_SIZE_16                      (TEGRA_I2S_BIT_SIZE_16 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
  86 #define TEGRA_I2S_CTRL_BIT_SIZE_20                      (TEGRA_I2S_BIT_SIZE_20 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
  87 #define TEGRA_I2S_CTRL_BIT_SIZE_24                      (TEGRA_I2S_BIT_SIZE_24 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
  88 #define TEGRA_I2S_CTRL_BIT_SIZE_32                      (TEGRA_I2S_BIT_SIZE_32 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
  89
  90 #define TEGRA_I2S_FIFO_16_LSB                           0
  91 #define TEGRA_I2S_FIFO_20_LSB                           1
  92 #define TEGRA_I2S_FIFO_24_LSB                           2
  93 #define TEGRA_I2S_FIFO_32                               3
  94 #define TEGRA_I2S_FIFO_PACKED                           7
  95
  96 #define TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT                4
  97 #define TEGRA_I2S_CTRL_FIFO_FORMAT_MASK                 (7                     << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
  98 #define TEGRA_I2S_CTRL_FIFO_FORMAT_16_LSB               (TEGRA_I2S_FIFO_16_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
  99 #define TEGRA_I2S_CTRL_FIFO_FORMAT_20_LSB               (TEGRA_I2S_FIFO_20_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
 100 #define TEGRA_I2S_CTRL_FIFO_FORMAT_24_LSB               (TEGRA_I2S_FIFO_24_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
 101 #define TEGRA_I2S_CTRL_FIFO_FORMAT_32                   (TEGRA_I2S_FIFO_32     << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
 102 #define TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED               (TEGRA_I2S_FIFO_PACKED << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
 103
 104 #define TEGRA_I2S_CTRL_IE_FIFO1_ERR                     (1 << 3)
 105 #define TEGRA_I2S_CTRL_IE_FIFO2_ERR                     (1 << 2)
 106 #define TEGRA_I2S_CTRL_QE_FIFO1                         (1 << 1)
 107 #define TEGRA_I2S_CTRL_QE_FIFO2                         (1 << 0)
 108
 109 /* Fields in TEGRA_I2S_STATUS */
 110
 111 #define TEGRA_I2S_STATUS_FIFO1_RDY                      (1 << 31)
 112 #define TEGRA_I2S_STATUS_FIFO2_RDY                      (1 << 30)
 113 #define TEGRA_I2S_STATUS_FIFO1_BSY                      (1 << 29)
 114 #define TEGRA_I2S_STATUS_FIFO2_BSY                      (1 << 28)
 115 #define TEGRA_I2S_STATUS_FIFO1_ERR                      (1 << 3)
 116 #define TEGRA_I2S_STATUS_FIFO2_ERR                      (1 << 2)
 117 #define TEGRA_I2S_STATUS_QS_FIFO1                       (1 << 1)
 118 #define TEGRA_I2S_STATUS_QS_FIFO2                       (1 << 0)
 119
 120 /* Fields in TEGRA_I2S_TIMING */
 121
 122 #define TEGRA_I2S_TIMING_NON_SYM_ENABLE                 (1 << 12)
 123 #define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT        0
 124 #define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US      0x7fff
 125 #define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK         (TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
 126
 127 /* Fields in TEGRA_I2S_FIFO_SCR */
 128
 129 #define TEGRA_I2S_FIFO_SCR_FIFO2_FULL_EMPTY_COUNT_SHIFT 24
 130 #define TEGRA_I2S_FIFO_SCR_FIFO1_FULL_EMPTY_COUNT_SHIFT 16
 131 #define TEGRA_I2S_FIFO_SCR_FIFO_FULL_EMPTY_COUNT_MASK   0x3f
 132
 133 #define TEGRA_I2S_FIFO_SCR_FIFO2_CLR                    (1 << 12)
 134 #define TEGRA_I2S_FIFO_SCR_FIFO1_CLR                    (1 << 8)
 135
 136 #define TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT                 0
 137 #define TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS               1
 138 #define TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS              2
 139 #define TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS             3
 140
 141 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT          4
 142 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_MASK           (3 << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
 143 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_ONE_SLOT       (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT     << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
 144 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS     (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS   << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
 145 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_EIGHT_SLOTS    (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS  << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
 146 #define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_TWELVE_SLOTS   (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
 147
 148 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT          0
 149 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_MASK           (3 << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
 150 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_ONE_SLOT       (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT     << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
 151 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS     (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS   << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
 152 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_EIGHT_SLOTS    (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS  << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
 153 #define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_TWELVE_SLOTS   (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
 154
 155 struct tegra_i2s {
 156         struct snd_soc_dai_driver dai;
 157         struct clk *clk_i2s;
 158         int clk_refs;
 159         struct tegra_pcm_dma_params capture_dma_data;
 160         struct tegra_pcm_dma_params playback_dma_data;
 161         void __iomem *regs;
 162         struct dentry *debug;
 163         u32 reg_ctrl;
 164 };
 165
 166 #endif