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
66
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