sound/soc/tegra/tegra_cif.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * tegra_cif.h - TEGRA Audio CIF Programming
   4  *
   5  * Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
   6  *
   7  */
   8
   9 #ifndef __TEGRA_CIF_H__
  10 #define __TEGRA_CIF_H__
  11
  12 #include <linux/regmap.h>
  13
  14 #define TEGRA_ACIF_CTRL_FIFO_TH_SHIFT           24
  15 #define TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT          20
  16 #define TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT         16
  17 #define TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT        12
  18 #define TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT       8
  19 #define TEGRA_ACIF_CTRL_EXPAND_SHIFT            6
  20 #define TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT       4
  21 #define TEGRA_ACIF_CTRL_REPLICATE_SHIFT         3
  22 #define TEGRA_ACIF_CTRL_TRUNCATE_SHIFT          1
  23 #define TEGRA_ACIF_CTRL_MONO_CONV_SHIFT         0
  24
  25 /* AUDIO/CLIENT_BITS values */
  26 #define TEGRA_ACIF_BITS_8                       1
  27 #define TEGRA_ACIF_BITS_16                      3
  28 #define TEGRA_ACIF_BITS_24                      5
  29 #define TEGRA_ACIF_BITS_32                      7
  30
  31 #define TEGRA_ACIF_UPDATE_MASK                  0x3ffffffb
  32
  33 struct tegra_cif_conf {
  34         unsigned int threshold;
  35         unsigned int audio_ch;
  36         unsigned int client_ch;
  37         unsigned int audio_bits;
  38         unsigned int client_bits;
  39         unsigned int expand;
  40         unsigned int stereo_conv;
  41         unsigned int replicate;
  42         unsigned int truncate;
  43         unsigned int mono_conv;
  44 };
  45
  46 static inline void tegra_set_cif(struct regmap *regmap, unsigned int reg,
  47                                  struct tegra_cif_conf *conf)
  48 {
  49         unsigned int value;
  50
  51         value = (conf->threshold << TEGRA_ACIF_CTRL_FIFO_TH_SHIFT) |
  52                 ((conf->audio_ch - 1) << TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT) |
  53                 ((conf->client_ch - 1) << TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT) |
  54                 (conf->audio_bits << TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT) |
  55                 (conf->client_bits << TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT) |
  56                 (conf->expand << TEGRA_ACIF_CTRL_EXPAND_SHIFT) |
  57                 (conf->stereo_conv << TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT) |
  58                 (conf->replicate << TEGRA_ACIF_CTRL_REPLICATE_SHIFT) |
  59                 (conf->truncate << TEGRA_ACIF_CTRL_TRUNCATE_SHIFT) |
  60                 (conf->mono_conv << TEGRA_ACIF_CTRL_MONO_CONV_SHIFT);
  61
  62         regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value);
  63 }
  64
  65 #endif