xref: /linux/sound/soc/rockchip/rockchip_pdm.h (revision 03ab8e6297acd1bc0eedaa050e2a1635c576fd11)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Rockchip PDM ALSA SoC Digital Audio Interface(DAI)  driver
4  *
5  * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd
6  */
7 
8 #ifndef _ROCKCHIP_PDM_H
9 #define _ROCKCHIP_PDM_H
10 
11 /* PDM REGS */
12 #define PDM_SYSCONFIG	(0x0000)
13 #define PDM_CTRL0	(0x0004)
14 #define PDM_CTRL1	(0x0008)
15 #define PDM_CLK_CTRL	(0x000c)
16 #define PDM_HPF_CTRL	(0x0010)
17 #define PDM_FIFO_CTRL	(0x0014)
18 #define PDM_DMA_CTRL	(0x0018)
19 #define PDM_INT_EN	(0x001c)
20 #define PDM_INT_CLR	(0x0020)
21 #define PDM_INT_ST	(0x0024)
22 #define PDM_RXFIFO_DATA	(0x0030)
23 #define PDM_DATA_VALID	(0x0054)
24 #define PDM_VERSION	(0x0058)
25 
26 /* PDM_SYSCONFIG */
27 #define PDM_RX_MASK		(0x1 << 2)
28 #define PDM_RX_START		(0x1 << 2)
29 #define PDM_RX_STOP		(0x0 << 2)
30 #define PDM_RX_CLR_MASK		(0x1 << 0)
31 #define PDM_RX_CLR_WR		(0x1 << 0)
32 #define PDM_RX_CLR_DONE		(0x0 << 0)
33 
34 /* PDM CTRL0 */
35 #define PDM_PATH_MSK		(0xf << 27)
36 #define PDM_MODE_MSK		BIT(31)
37 #define PDM_MODE_RJ		0
38 #define PDM_MODE_LJ		BIT(31)
39 #define PDM_PATH3_EN		BIT(30)
40 #define PDM_PATH2_EN		BIT(29)
41 #define PDM_PATH1_EN		BIT(28)
42 #define PDM_PATH0_EN		BIT(27)
43 #define PDM_HWT_EN		BIT(26)
44 #define PDM_SAMPLERATE_MSK	GENMASK(7, 5)
45 #define PDM_SAMPLERATE(x)	((x) << 5)
46 #define PDM_VDW_MSK		(0x1f << 0)
47 #define PDM_VDW(X)		((X - 1) << 0)
48 
49 /* PDM CTRL1 */
50 #define PDM_FD_NUMERATOR_SFT	16
51 #define PDM_FD_NUMERATOR_MSK	GENMASK(31, 16)
52 #define PDM_FD_DENOMINATOR_SFT	0
53 #define PDM_FD_DENOMINATOR_MSK	GENMASK(15, 0)
54 
55 /* PDM CLK CTRL */
56 #define PDM_PATH_SHIFT(x)	(8 + (x) * 2)
57 #define PDM_PATH_MASK(x)	(0x3 << PDM_PATH_SHIFT(x))
58 #define PDM_PATH(x, v)		((v) << PDM_PATH_SHIFT(x))
59 #define PDM_CLK_FD_RATIO_MSK	BIT(6)
60 #define PDM_CLK_FD_RATIO_40	(0X0 << 6)
61 #define PDM_CLK_FD_RATIO_35	BIT(6)
62 #define PDM_CLK_MSK		BIT(5)
63 #define PDM_CLK_EN		BIT(5)
64 #define PDM_CLK_DIS		(0x0 << 5)
65 #define PDM_CKP_MSK		BIT(3)
66 #define PDM_CKP_NORMAL		(0x0 << 3)
67 #define PDM_CKP_INVERTED	BIT(3)
68 #define PDM_DS_RATIO_MSK	(0x7 << 0)
69 #define PDM_CLK_320FS		(0x0 << 0)
70 #define PDM_CLK_640FS		(0x1 << 0)
71 #define PDM_CLK_1280FS		(0x2 << 0)
72 #define PDM_CLK_2560FS		(0x3 << 0)
73 #define PDM_CLK_5120FS		(0x4 << 0)
74 #define PDM_CIC_RATIO_MSK	(0x3 << 0)
75 
76 /* PDM HPF CTRL */
77 #define PDM_HPF_LE		BIT(3)
78 #define PDM_HPF_RE		BIT(2)
79 #define PDM_HPF_CF_MSK		(0x3 << 0)
80 #define PDM_HPF_3P79HZ		(0x0 << 0)
81 #define PDM_HPF_60HZ		(0x1 << 0)
82 #define PDM_HPF_243HZ		(0x2 << 0)
83 #define PDM_HPF_493HZ		(0x3 << 0)
84 
85 /* PDM DMA CTRL */
86 #define PDM_DMA_RD_MSK		BIT(8)
87 #define PDM_DMA_RD_EN		BIT(8)
88 #define PDM_DMA_RD_DIS		(0x0 << 8)
89 #define PDM_DMA_RDL_MSK		(0x7f << 0)
90 #define PDM_DMA_RDL(X)		((X - 1) << 0)
91 
92 #endif /* _ROCKCHIP_PDM_H */
93