xref: /openbmc/linux/sound/soc/tegra/tegra210_dmic.h (revision 8c8ff982)
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 
54 enum tegra_dmic_ch_select {
55 	DMIC_CH_SELECT_LEFT,
56 	DMIC_CH_SELECT_RIGHT,
57 	DMIC_CH_SELECT_STEREO,
58 };
59 
60 enum tegra_dmic_osr {
61 	DMIC_OSR_64,
62 	DMIC_OSR_128,
63 	DMIC_OSR_256,
64 };
65 
66 enum tegra_dmic_lrsel {
67 	DMIC_LRSEL_LEFT,
68 	DMIC_LRSEL_RIGHT,
69 };
70 
71 struct 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