sound/soc/tegra/tegra210_dmic.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * tegra210_dmic.h - Definitions for Tegra210 DMIC driver
   4  *
   5  * Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
   6  *
   7  */
   8
   9 #ifndef __TEGRA210_DMIC_H__
  10 #define __TEGRA210_DMIC_H__
  11
  12 /* Register offsets from DMIC BASE */
  13 #define TEGRA210_DMIC_TX_STATUS                         0x0c
  14 #define TEGRA210_DMIC_TX_INT_STATUS                     0x10
  15 #define TEGRA210_DMIC_TX_INT_MASK                       0x14
  16 #define TEGRA210_DMIC_TX_INT_SET                        0x18
  17 #define TEGRA210_DMIC_TX_INT_CLEAR                      0x1c
  18 #define TEGRA210_DMIC_TX_CIF_CTRL                       0x20
  19 #define TEGRA210_DMIC_ENABLE                            0x40
  20 #define TEGRA210_DMIC_SOFT_RESET                        0x44
  21 #define TEGRA210_DMIC_CG                                0x48
  22 #define TEGRA210_DMIC_STATUS                            0x4c
  23 #define TEGRA210_DMIC_INT_STATUS                        0x50
  24 #define TEGRA210_DMIC_CTRL                              0x64
  25 #define TEGRA210_DMIC_DBG_CTRL                          0x70
  26 #define TEGRA210_DMIC_DCR_BIQUAD_0_COEF_4               0x88
  27 #define TEGRA210_DMIC_LP_FILTER_GAIN                    0x8c
  28 #define TEGRA210_DMIC_LP_BIQUAD_0_COEF_0                0x90
  29 #define TEGRA210_DMIC_LP_BIQUAD_0_COEF_1                0x94
  30 #define TEGRA210_DMIC_LP_BIQUAD_0_COEF_2                0x98
  31 #define TEGRA210_DMIC_LP_BIQUAD_0_COEF_3                0x9c
  32 #define TEGRA210_DMIC_LP_BIQUAD_0_COEF_4                0xa0
  33 #define TEGRA210_DMIC_LP_BIQUAD_1_COEF_0                0xa4
  34 #define TEGRA210_DMIC_LP_BIQUAD_1_COEF_1                0xa8
  35 #define TEGRA210_DMIC_LP_BIQUAD_1_COEF_2                0xac
  36 #define TEGRA210_DMIC_LP_BIQUAD_1_COEF_3                0xb0
  37 #define TEGRA210_DMIC_LP_BIQUAD_1_COEF_4                0xb4
  38
  39 /* Fields in TEGRA210_DMIC_CTRL */
  40 #define CH_SEL_SHIFT                                    8
  41 #define TEGRA210_DMIC_CTRL_CHANNEL_SELECT_MASK          (0x3 << CH_SEL_SHIFT)
  42 #define LRSEL_POL_SHIFT                                 4
  43 #define TEGRA210_DMIC_CTRL_LRSEL_POLARITY_MASK          (0x1 << LRSEL_POL_SHIFT)
  44 #define OSR_SHIFT                                       0
  45 #define TEGRA210_DMIC_CTRL_OSR_MASK                     (0x3 << OSR_SHIFT)
  46
  47 #define DMIC_OSR_FACTOR                                 64
  48
  49 #define DEFAULT_GAIN_Q23                                0x800000
  50
  51 /* Max boost gain factor used for mixer control */
  52 #define MAX_BOOST_GAIN 25599
  53
  54 enum tegra_dmic_ch_select {
  55         DMIC_CH_SELECT_LEFT,
  56         DMIC_CH_SELECT_RIGHT,
  57         DMIC_CH_SELECT_STEREO,
  58 };
  59
  60 enum tegra_dmic_osr {
  61         DMIC_OSR_64,
  62         DMIC_OSR_128,
  63         DMIC_OSR_256,
  64 };
  65
  66 enum tegra_dmic_lrsel {
  67         DMIC_LRSEL_LEFT,
  68         DMIC_LRSEL_RIGHT,
  69 };
  70
  71 struct tegra210_dmic {
  72         struct clk *clk_dmic;
  73         struct regmap *regmap;
  74         unsigned int mono_to_stereo;
  75         unsigned int stereo_to_mono;
  76         unsigned int boost_gain;
  77         unsigned int ch_select;
  78         unsigned int osr_val;
  79         unsigned int lrsel;
  80 };
  81
  82 #endif