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
33struct 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
46static 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