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
tegra_set_cif(struct regmap * regmap,unsigned int reg,struct tegra_cif_conf * conf)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
tegra264_set_cif(struct regmap * regmap,unsigned int reg,struct tegra_cif_conf * conf)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