xref: /openbmc/linux/sound/soc/tegra/tegra20_i2s.h (revision 79e790ff) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * tegra20_i2s.h - Definitions for Tegra20 I2S driver
4  *
5  * Author: Stephen Warren <swarren@nvidia.com>
6  * Copyright (C) 2010,2012 - NVIDIA, Inc.
7  *
8  * Based on code copyright/by:
9  *
10  * Copyright (c) 2009-2010, NVIDIA Corporation.
11  * Scott Peterson <speterson@nvidia.com>
12  *
13  * Copyright (C) 2010 Google, Inc.
14  * Iliyan Malchev <malchev@google.com>
15  */
16 
17 #ifndef __TEGRA20_I2S_H__
18 #define __TEGRA20_I2S_H__
19 
20 #include "tegra_pcm.h"
21 
22 /* Register offsets from TEGRA20_I2S1_BASE and TEGRA20_I2S2_BASE */
23 
24 #define TEGRA20_I2S_CTRL				0x00
25 #define TEGRA20_I2S_STATUS				0x04
26 #define TEGRA20_I2S_TIMING				0x08
27 #define TEGRA20_I2S_FIFO_SCR				0x0c
28 #define TEGRA20_I2S_PCM_CTRL				0x10
29 #define TEGRA20_I2S_NW_CTRL				0x14
30 #define TEGRA20_I2S_TDM_CTRL				0x20
31 #define TEGRA20_I2S_TDM_TX_RX_CTRL			0x24
32 #define TEGRA20_I2S_FIFO1				0x40
33 #define TEGRA20_I2S_FIFO2				0x80
34 
35 /* Fields in TEGRA20_I2S_CTRL */
36 
37 #define TEGRA20_I2S_CTRL_FIFO2_TX_ENABLE		(1 << 30)
38 #define TEGRA20_I2S_CTRL_FIFO1_ENABLE			(1 << 29)
39 #define TEGRA20_I2S_CTRL_FIFO2_ENABLE			(1 << 28)
40 #define TEGRA20_I2S_CTRL_FIFO1_RX_ENABLE		(1 << 27)
41 #define TEGRA20_I2S_CTRL_FIFO_LPBK_ENABLE		(1 << 26)
42 #define TEGRA20_I2S_CTRL_MASTER_ENABLE			(1 << 25)
43 
44 #define TEGRA20_I2S_LRCK_LEFT_LOW				0
45 #define TEGRA20_I2S_LRCK_RIGHT_LOW			1
46 
47 #define TEGRA20_I2S_CTRL_LRCK_SHIFT			24
48 #define TEGRA20_I2S_CTRL_LRCK_MASK			(1                          << TEGRA20_I2S_CTRL_LRCK_SHIFT)
49 #define TEGRA20_I2S_CTRL_LRCK_L_LOW			(TEGRA20_I2S_LRCK_LEFT_LOW  << TEGRA20_I2S_CTRL_LRCK_SHIFT)
50 #define TEGRA20_I2S_CTRL_LRCK_R_LOW			(TEGRA20_I2S_LRCK_RIGHT_LOW << TEGRA20_I2S_CTRL_LRCK_SHIFT)
51 
52 #define TEGRA20_I2S_BIT_FORMAT_I2S			0
53 #define TEGRA20_I2S_BIT_FORMAT_RJM			1
54 #define TEGRA20_I2S_BIT_FORMAT_LJM			2
55 #define TEGRA20_I2S_BIT_FORMAT_DSP			3
56 
57 #define TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT		10
58 #define TEGRA20_I2S_CTRL_BIT_FORMAT_MASK		(3                          << TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT)
59 #define TEGRA20_I2S_CTRL_BIT_FORMAT_I2S			(TEGRA20_I2S_BIT_FORMAT_I2S << TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT)
60 #define TEGRA20_I2S_CTRL_BIT_FORMAT_RJM			(TEGRA20_I2S_BIT_FORMAT_RJM << TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT)
61 #define TEGRA20_I2S_CTRL_BIT_FORMAT_LJM			(TEGRA20_I2S_BIT_FORMAT_LJM << TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT)
62 #define TEGRA20_I2S_CTRL_BIT_FORMAT_DSP			(TEGRA20_I2S_BIT_FORMAT_DSP << TEGRA20_I2S_CTRL_BIT_FORMAT_SHIFT)
63 
64 #define TEGRA20_I2S_BIT_SIZE_16				0
65 #define TEGRA20_I2S_BIT_SIZE_20				1
66 #define TEGRA20_I2S_BIT_SIZE_24				2
67 #define TEGRA20_I2S_BIT_SIZE_32				3
68 
69 #define TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT			8
70 #define TEGRA20_I2S_CTRL_BIT_SIZE_MASK			(3                       << TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT)
71 #define TEGRA20_I2S_CTRL_BIT_SIZE_16			(TEGRA20_I2S_BIT_SIZE_16 << TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT)
72 #define TEGRA20_I2S_CTRL_BIT_SIZE_20			(TEGRA20_I2S_BIT_SIZE_20 << TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT)
73 #define TEGRA20_I2S_CTRL_BIT_SIZE_24			(TEGRA20_I2S_BIT_SIZE_24 << TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT)
74 #define TEGRA20_I2S_CTRL_BIT_SIZE_32			(TEGRA20_I2S_BIT_SIZE_32 << TEGRA20_I2S_CTRL_BIT_SIZE_SHIFT)
75 
76 #define TEGRA20_I2S_FIFO_16_LSB				0
77 #define TEGRA20_I2S_FIFO_20_LSB				1
78 #define TEGRA20_I2S_FIFO_24_LSB				2
79 #define TEGRA20_I2S_FIFO_32				3
80 #define TEGRA20_I2S_FIFO_PACKED				7
81 
82 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT		4
83 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_MASK		(7                       << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
84 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_16_LSB		(TEGRA20_I2S_FIFO_16_LSB << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
85 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_20_LSB		(TEGRA20_I2S_FIFO_20_LSB << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
86 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_24_LSB		(TEGRA20_I2S_FIFO_24_LSB << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
87 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_32			(TEGRA20_I2S_FIFO_32     << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
88 #define TEGRA20_I2S_CTRL_FIFO_FORMAT_PACKED		(TEGRA20_I2S_FIFO_PACKED << TEGRA20_I2S_CTRL_FIFO_FORMAT_SHIFT)
89 
90 #define TEGRA20_I2S_CTRL_IE_FIFO1_ERR			(1 << 3)
91 #define TEGRA20_I2S_CTRL_IE_FIFO2_ERR			(1 << 2)
92 #define TEGRA20_I2S_CTRL_QE_FIFO1			(1 << 1)
93 #define TEGRA20_I2S_CTRL_QE_FIFO2			(1 << 0)
94 
95 /* Fields in TEGRA20_I2S_STATUS */
96 
97 #define TEGRA20_I2S_STATUS_FIFO1_RDY			(1 << 31)
98 #define TEGRA20_I2S_STATUS_FIFO2_RDY			(1 << 30)
99 #define TEGRA20_I2S_STATUS_FIFO1_BSY			(1 << 29)
100 #define TEGRA20_I2S_STATUS_FIFO2_BSY			(1 << 28)
101 #define TEGRA20_I2S_STATUS_FIFO1_ERR			(1 << 3)
102 #define TEGRA20_I2S_STATUS_FIFO2_ERR			(1 << 2)
103 #define TEGRA20_I2S_STATUS_QS_FIFO1			(1 << 1)
104 #define TEGRA20_I2S_STATUS_QS_FIFO2			(1 << 0)
105 
106 /* Fields in TEGRA20_I2S_TIMING */
107 
108 #define TEGRA20_I2S_TIMING_NON_SYM_ENABLE		(1 << 12)
109 #define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT	0
110 #define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US	0x7ff
111 #define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK	(TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
112 
113 /* Fields in TEGRA20_I2S_FIFO_SCR */
114 
115 #define TEGRA20_I2S_FIFO_SCR_FIFO2_FULL_EMPTY_COUNT_SHIFT	24
116 #define TEGRA20_I2S_FIFO_SCR_FIFO1_FULL_EMPTY_COUNT_SHIFT	16
117 #define TEGRA20_I2S_FIFO_SCR_FIFO_FULL_EMPTY_COUNT_MASK		0x3f
118 
119 #define TEGRA20_I2S_FIFO_SCR_FIFO2_CLR			(1 << 12)
120 #define TEGRA20_I2S_FIFO_SCR_FIFO1_CLR			(1 << 8)
121 
122 #define TEGRA20_I2S_FIFO_ATN_LVL_ONE_SLOT		0
123 #define TEGRA20_I2S_FIFO_ATN_LVL_FOUR_SLOTS		1
124 #define TEGRA20_I2S_FIFO_ATN_LVL_EIGHT_SLOTS		2
125 #define TEGRA20_I2S_FIFO_ATN_LVL_TWELVE_SLOTS		3
126 
127 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT	4
128 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_MASK		(3 << TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
129 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_ONE_SLOT	(TEGRA20_I2S_FIFO_ATN_LVL_ONE_SLOT     << TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
130 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_FOUR_SLOTS   << TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
131 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_EIGHT_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_EIGHT_SLOTS  << TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
132 #define TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_TWELVE_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA20_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
133 
134 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT	0
135 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_MASK		(3 << TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
136 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_ONE_SLOT	(TEGRA20_I2S_FIFO_ATN_LVL_ONE_SLOT     << TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
137 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_FOUR_SLOTS   << TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
138 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_EIGHT_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_EIGHT_SLOTS  << TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
139 #define TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_TWELVE_SLOTS	(TEGRA20_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA20_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
140 
141 struct tegra20_i2s {
142 	struct snd_soc_dai_driver dai;
143 	struct clk *clk_i2s;
144 	struct snd_dmaengine_dai_dma_data capture_dma_data;
145 	struct snd_dmaengine_dai_dma_data playback_dma_data;
146 	struct regmap *regmap;
147 	struct reset_control *reset;
148 };
149 
150 #endif
151