1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * omap-mcpdm.h
4  *
5  * Copyright (C) 2009 - 2011 Texas Instruments
6  *
7  * Contact: Misael Lopez Cruz <misael.lopez@ti.com>
8  */
9 
10 #ifndef __OMAP_MCPDM_H__
11 #define __OMAP_MCPDM_H__
12 
13 #define MCPDM_REG_REVISION		0x00
14 #define MCPDM_REG_SYSCONFIG		0x10
15 #define MCPDM_REG_IRQSTATUS_RAW		0x24
16 #define MCPDM_REG_IRQSTATUS		0x28
17 #define MCPDM_REG_IRQENABLE_SET		0x2C
18 #define MCPDM_REG_IRQENABLE_CLR		0x30
19 #define MCPDM_REG_IRQWAKE_EN		0x34
20 #define MCPDM_REG_DMAENABLE_SET		0x38
21 #define MCPDM_REG_DMAENABLE_CLR		0x3C
22 #define MCPDM_REG_DMAWAKEEN		0x40
23 #define MCPDM_REG_CTRL			0x44
24 #define MCPDM_REG_DN_DATA		0x48
25 #define MCPDM_REG_UP_DATA		0x4C
26 #define MCPDM_REG_FIFO_CTRL_DN		0x50
27 #define MCPDM_REG_FIFO_CTRL_UP		0x54
28 #define MCPDM_REG_DN_OFFSET		0x58
29 
30 /*
31  * MCPDM_IRQ bit fields
32  * IRQSTATUS_RAW, IRQSTATUS, IRQENABLE_SET, IRQENABLE_CLR
33  */
34 
35 #define MCPDM_DN_IRQ			(1 << 0)
36 #define MCPDM_DN_IRQ_EMPTY		(1 << 1)
37 #define MCPDM_DN_IRQ_ALMST_EMPTY	(1 << 2)
38 #define MCPDM_DN_IRQ_FULL		(1 << 3)
39 
40 #define MCPDM_UP_IRQ			(1 << 8)
41 #define MCPDM_UP_IRQ_EMPTY		(1 << 9)
42 #define MCPDM_UP_IRQ_ALMST_FULL		(1 << 10)
43 #define MCPDM_UP_IRQ_FULL		(1 << 11)
44 
45 #define MCPDM_DOWNLINK_IRQ_MASK		0x00F
46 #define MCPDM_UPLINK_IRQ_MASK		0xF00
47 
48 /*
49  * MCPDM_DMAENABLE bit fields
50  */
51 
52 #define MCPDM_DMA_DN_ENABLE		(1 << 0)
53 #define MCPDM_DMA_UP_ENABLE		(1 << 1)
54 
55 /*
56  * MCPDM_CTRL bit fields
57  */
58 
59 #define MCPDM_PDM_UPLINK_EN(x)		(1 << (x - 1)) /* ch1 is at bit 0 */
60 #define MCPDM_PDM_DOWNLINK_EN(x)	(1 << (x + 2)) /* ch1 is at bit 3 */
61 #define MCPDM_PDMOUTFORMAT		(1 << 8)
62 #define MCPDM_CMD_INT			(1 << 9)
63 #define MCPDM_STATUS_INT		(1 << 10)
64 #define MCPDM_SW_UP_RST			(1 << 11)
65 #define MCPDM_SW_DN_RST			(1 << 12)
66 #define MCPDM_WD_EN			(1 << 14)
67 #define MCPDM_PDM_UP_MASK		0x7
68 #define MCPDM_PDM_DN_MASK		(0x1f << 3)
69 
70 
71 #define MCPDM_PDMOUTFORMAT_LJUST	(0 << 8)
72 #define MCPDM_PDMOUTFORMAT_RJUST	(1 << 8)
73 
74 /*
75  * MCPDM_FIFO_CTRL bit fields
76  */
77 
78 #define MCPDM_UP_THRES_MAX		0xF
79 #define MCPDM_DN_THRES_MAX		0xF
80 
81 /*
82  * MCPDM_DN_OFFSET bit fields
83  */
84 
85 #define MCPDM_DN_OFST_RX1_EN		(1 << 0)
86 #define MCPDM_DNOFST_RX1(x)		((x & 0x1f) << 1)
87 #define MCPDM_DN_OFST_RX2_EN		(1 << 8)
88 #define MCPDM_DNOFST_RX2(x)		((x & 0x1f) << 9)
89 
90 void omap_mcpdm_configure_dn_offsets(struct snd_soc_pcm_runtime *rtd,
91 				    u8 rx1, u8 rx2);
92 
93 #endif	/* End of __OMAP_MCPDM_H__ */
94