1 /* SPDX-License-Identifier: GPL-2.0-only 2 * SPDX-FileCopyrightText: Copyright (c) 2020-2025 NVIDIA CORPORATION. All rights reserved. 3 * 4 * tegra_cif.h - TEGRA Audio CIF Programming 5 * 6 */ 7 8 #ifndef __TEGRA_CIF_H__ 9 #define __TEGRA_CIF_H__ 10 11 #include <linux/regmap.h> 12 13 #define TEGRA_ACIF_CTRL_FIFO_TH_SHIFT 24 14 #define TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT 20 15 #define TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT 16 16 #define TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT 12 17 #define TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT 8 18 #define TEGRA_ACIF_CTRL_EXPAND_SHIFT 6 19 #define TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT 4 20 #define TEGRA_ACIF_CTRL_REPLICATE_SHIFT 3 21 #define TEGRA_ACIF_CTRL_TRUNCATE_SHIFT 1 22 #define TEGRA_ACIF_CTRL_MONO_CONV_SHIFT 0 23 24 #define TEGRA264_ACIF_CTRL_AUDIO_BITS_SHIFT 11 25 #define TEGRA264_ACIF_CTRL_CLIENT_CH_SHIFT 14 26 #define TEGRA264_ACIF_CTRL_AUDIO_CH_SHIFT 19 27 28 /* AUDIO/CLIENT_BITS values */ 29 #define TEGRA_ACIF_BITS_8 1 30 #define TEGRA_ACIF_BITS_16 3 31 #define TEGRA_ACIF_BITS_24 5 32 #define TEGRA_ACIF_BITS_32 7 33 34 #define TEGRA_ACIF_UPDATE_MASK 0x3ffffffb 35 36 struct tegra_cif_conf { 37 unsigned int threshold; 38 unsigned int audio_ch; 39 unsigned int client_ch; 40 unsigned int audio_bits; 41 unsigned int client_bits; 42 unsigned int expand; 43 unsigned int stereo_conv; 44 unsigned int replicate; 45 unsigned int truncate; 46 unsigned int mono_conv; 47 }; 48 49 static inline void tegra_set_cif(struct regmap *regmap, unsigned int reg, 50 struct tegra_cif_conf *conf) 51 { 52 unsigned int value; 53 54 value = (conf->threshold << TEGRA_ACIF_CTRL_FIFO_TH_SHIFT) | 55 ((conf->audio_ch - 1) << TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT) | 56 ((conf->client_ch - 1) << TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT) | 57 (conf->audio_bits << TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT) | 58 (conf->client_bits << TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT) | 59 (conf->expand << TEGRA_ACIF_CTRL_EXPAND_SHIFT) | 60 (conf->stereo_conv << TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT) | 61 (conf->replicate << TEGRA_ACIF_CTRL_REPLICATE_SHIFT) | 62 (conf->truncate << TEGRA_ACIF_CTRL_TRUNCATE_SHIFT) | 63 (conf->mono_conv << TEGRA_ACIF_CTRL_MONO_CONV_SHIFT); 64 65 regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value); 66 } 67 68 static inline void tegra264_set_cif(struct regmap *regmap, unsigned int reg, 69 struct tegra_cif_conf *conf) 70 { 71 unsigned int value; 72 73 value = (conf->threshold << TEGRA_ACIF_CTRL_FIFO_TH_SHIFT) | 74 ((conf->audio_ch - 1) << TEGRA264_ACIF_CTRL_AUDIO_CH_SHIFT) | 75 ((conf->client_ch - 1) << TEGRA264_ACIF_CTRL_CLIENT_CH_SHIFT) | 76 (conf->audio_bits << TEGRA264_ACIF_CTRL_AUDIO_BITS_SHIFT) | 77 (conf->client_bits << TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT) | 78 (conf->expand << TEGRA_ACIF_CTRL_EXPAND_SHIFT) | 79 (conf->stereo_conv << TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT) | 80 (conf->replicate << TEGRA_ACIF_CTRL_REPLICATE_SHIFT) | 81 (conf->truncate << TEGRA_ACIF_CTRL_TRUNCATE_SHIFT) | 82 (conf->mono_conv << TEGRA_ACIF_CTRL_MONO_CONV_SHIFT); 83 84 regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value); 85 } 86 87 #endif 88