xref: /linux/include/sound/sh_fsi.h (revision 4413e16d9d21673bb5048a2e542f1aaa00015c2e)
1 #ifndef __SOUND_FSI_H
2 #define __SOUND_FSI_H
3 
4 /*
5  * Fifo-attached Serial Interface (FSI) support for SH7724
6  *
7  * Copyright (C) 2009 Renesas Solutions Corp.
8  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  */
14 
15 #define FSI_PORT_A	0
16 #define FSI_PORT_B	1
17 
18 #include <linux/clk.h>
19 #include <sound/soc.h>
20 
21 /*
22  * flags format
23  *
24  * 0x00000CBA
25  *
26  * A:  inversion
27  * B:  format mode
28  * C:  chip specific
29  */
30 
31 /* A: clock inversion */
32 #define SH_FSI_INVERSION_MASK	0x0000000F
33 #define SH_FSI_LRM_INV		(1 << 0)
34 #define SH_FSI_BRM_INV		(1 << 1)
35 #define SH_FSI_LRS_INV		(1 << 2)
36 #define SH_FSI_BRS_INV		(1 << 3)
37 
38 /* B: format mode */
39 #define SH_FSI_FMT_MASK		0x000000F0
40 #define SH_FSI_FMT_DAI		(0 << 4)
41 #define SH_FSI_FMT_SPDIF	(1 << 4)
42 
43 /* C: chip specific */
44 #define SH_FSI_OPTION_MASK	0x00000F00
45 #define SH_FSI_ENABLE_STREAM_MODE	(1 << 8) /* for 16bit data */
46 
47 /*
48  * set_rate return value
49  *
50  * see ACKMD/BPFMD on
51  *     ACK_MD (FSI2)
52  *     CKG1   (FSI)
53  *
54  * err		: return value <  0
55  * no change	: return value == 0
56  * change xMD	: return value >  0
57  *
58  * 0x-00000AB
59  *
60  * A:  ACKMD value
61  * B:  BPFMD value
62  */
63 
64 #define SH_FSI_ACKMD_MASK	(0xF << 0)
65 #define SH_FSI_ACKMD_512	(1 << 0)
66 #define SH_FSI_ACKMD_256	(2 << 0)
67 #define SH_FSI_ACKMD_128	(3 << 0)
68 #define SH_FSI_ACKMD_64		(4 << 0)
69 #define SH_FSI_ACKMD_32		(5 << 0)
70 
71 #define SH_FSI_BPFMD_MASK	(0xF << 4)
72 #define SH_FSI_BPFMD_512	(1 << 4)
73 #define SH_FSI_BPFMD_256	(2 << 4)
74 #define SH_FSI_BPFMD_128	(3 << 4)
75 #define SH_FSI_BPFMD_64		(4 << 4)
76 #define SH_FSI_BPFMD_32		(5 << 4)
77 #define SH_FSI_BPFMD_16		(6 << 4)
78 
79 struct sh_fsi_port_info {
80 	unsigned long flags;
81 	int tx_id;
82 	int rx_id;
83 	int (*set_rate)(struct device *dev, int rate, int enable);
84 };
85 
86 struct sh_fsi_platform_info {
87 	struct sh_fsi_port_info port_a;
88 	struct sh_fsi_port_info port_b;
89 };
90 
91 #endif /* __SOUND_FSI_H */
92