1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * tegra210_dmic.h - Definitions for Tegra210 DMIC driver
4 *
5 * Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved.
6 *
7 */
8
9#ifndef __TEGRA210_DMIC_H__
10#define __TEGRA210_DMIC_H__
11
12/* Register offsets from DMIC BASE */
13#define TEGRA210_DMIC_TX_STATUS 0x0c
14#define TEGRA210_DMIC_TX_INT_STATUS 0x10
15#define TEGRA210_DMIC_TX_INT_MASK 0x14
16#define TEGRA210_DMIC_TX_INT_SET 0x18
17#define TEGRA210_DMIC_TX_INT_CLEAR 0x1c
18#define TEGRA210_DMIC_TX_CIF_CTRL 0x20
19#define TEGRA210_DMIC_ENABLE 0x40
20#define TEGRA210_DMIC_SOFT_RESET 0x44
21#define TEGRA210_DMIC_CG 0x48
22#define TEGRA210_DMIC_STATUS 0x4c
23#define TEGRA210_DMIC_INT_STATUS 0x50
24#define TEGRA210_DMIC_CTRL 0x64
25#define TEGRA210_DMIC_DBG_CTRL 0x70
26#define TEGRA210_DMIC_DCR_BIQUAD_0_COEF_4 0x88
27#define TEGRA210_DMIC_LP_FILTER_GAIN 0x8c
28#define TEGRA210_DMIC_LP_BIQUAD_0_COEF_0 0x90
29#define TEGRA210_DMIC_LP_BIQUAD_0_COEF_1 0x94
30#define TEGRA210_DMIC_LP_BIQUAD_0_COEF_2 0x98
31#define TEGRA210_DMIC_LP_BIQUAD_0_COEF_3 0x9c
32#define TEGRA210_DMIC_LP_BIQUAD_0_COEF_4 0xa0
33#define TEGRA210_DMIC_LP_BIQUAD_1_COEF_0 0xa4
34#define TEGRA210_DMIC_LP_BIQUAD_1_COEF_1 0xa8
35#define TEGRA210_DMIC_LP_BIQUAD_1_COEF_2 0xac
36#define TEGRA210_DMIC_LP_BIQUAD_1_COEF_3 0xb0
37#define TEGRA210_DMIC_LP_BIQUAD_1_COEF_4 0xb4
38
39/* Fields in TEGRA210_DMIC_CTRL */
40#define CH_SEL_SHIFT 8
41#define TEGRA210_DMIC_CTRL_CHANNEL_SELECT_MASK (0x3 << CH_SEL_SHIFT)
42#define LRSEL_POL_SHIFT 4
43#define TEGRA210_DMIC_CTRL_LRSEL_POLARITY_MASK (0x1 << LRSEL_POL_SHIFT)
44#define OSR_SHIFT 0
45#define TEGRA210_DMIC_CTRL_OSR_MASK (0x3 << OSR_SHIFT)
46
47#define DMIC_OSR_FACTOR 64
48
49#define DEFAULT_GAIN_Q23 0x800000
50
51/* Max boost gain factor used for mixer control */
52#define MAX_BOOST_GAIN 25599
53
54enum tegra_dmic_ch_select {
55 DMIC_CH_SELECT_LEFT,
56 DMIC_CH_SELECT_RIGHT,
57 DMIC_CH_SELECT_STEREO,
58};
59
60enum tegra_dmic_osr {
61 DMIC_OSR_64,
62 DMIC_OSR_128,
63 DMIC_OSR_256,
64};
65
66enum tegra_dmic_lrsel {
67 DMIC_LRSEL_LEFT,
68 DMIC_LRSEL_RIGHT,
69};
70
71struct tegra210_dmic {
72 struct clk *clk_dmic;
73 struct regmap *regmap;
74 unsigned int mono_to_stereo;
75 unsigned int stereo_to_mono;
76 unsigned int boost_gain;
77 unsigned int ch_select;
78 unsigned int osr_val;
79 unsigned int lrsel;
80};
81
82#endif
83

source code of linux/sound/soc/tegra/tegra210_dmic.h