summaryrefslogtreecommitdiffstats
path: root/kernel/arch/cris/include/uapi/asm/sync_serial.h
blob: 7f827fea30e7bbabf54cbb33115ac0d9287abfef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/*
 * ioctl defines for synchronous serial port driver
 *
 * Copyright (c) 2001-2003 Axis Communications AB
 *
 * Author: Mikael Starvik
 *
 */

#ifndef SYNC_SERIAL_H
#define SYNC_SERIAL_H

#include <linux/ioctl.h>

#define SSP_SPEED      _IOR('S', 0, unsigned int)
#define SSP_MODE       _IOR('S', 1, unsigned int)
#define SSP_FRAME_SYNC _IOR('S', 2, unsigned int)
#define SSP_IPOLARITY  _IOR('S', 3, unsigned int)
#define SSP_OPOLARITY  _IOR('S', 4, unsigned int)
#define SSP_SPI        _IOR('S', 5, unsigned int)
#define SSP_INBUFCHUNK _IOR('S', 6, unsigned int)
#define SSP_INPUT      _IOR('S', 7, unsigned int)

/* Values for SSP_SPEED */
#define SSP150        0
#define SSP300        1
#define SSP600        2
#define SSP1200       3
#define SSP2400       4
#define SSP4800       5
#define SSP9600       6
#define SSP19200      7
#define SSP28800      8
#define SSP57600      9
#define SSP115200    10
#define SSP230400    11
#define SSP460800    12
#define SSP921600    13
#define SSP3125000   14
#define CODEC        15
#define CODEC_f32768 16

#define FREQ_4MHz   0
#define FREQ_2MHz   1
#define FREQ_1MHz   2
#define FREQ_512kHz 3
#define FREQ_256kHz 4
#define FREQ_128kHz 5
#define FREQ_64kHz  6
#define FREQ_32kHz  7
/* FREQ_* with values where bit (value & 0x10) is set are */
/* used for CODEC_f32768 */
#define FREQ_4096kHz 16 /* CODEC_f32768 */

/* Used by application to set CODEC divider, word rate and frame rate */
#define CODEC_VAL(freq, clk_per_sync, sync_per_frame) \
	((CODEC + ((freq & 0x10) >> 4)) | (freq << 8) | \
		   (clk_per_sync << 16) | (sync_per_frame << 28))

/* Used by driver to extract speed */
#define GET_SPEED(x) (x & 0xff)
#define GET_FREQ(x) ((x & 0xff00) >> 8)
#define GET_WORD_RATE(x) (((x & 0x0fff0000) >> 16) - 1)
#define GET_FRAME_RATE(x) (((x & 0xf0000000) >> 28) - 1)

/* Values for SSP_MODE */
#define MASTER_OUTPUT 0
#define SLAVE_OUTPUT  1
#define MASTER_INPUT  2
#define SLAVE_INPUT   3
#define MASTER_BIDIR  4
#define SLAVE_BIDIR   5

/* Values for SSP_FRAME_SYNC */
#define NORMAL_SYNC                1
#define EARLY_SYNC                 2
#define SECOND_WORD_SYNC     0x40000
#define LATE_SYNC            0x80000

#define BIT_SYNC                   4
#define WORD_SYNC                  8
#define EXTENDED_SYNC           0x10

#define SYNC_OFF                0x20
#define SYNC_ON                 0x40
#define WORD_SIZE_8             0x80
#define WORD_SIZE_12           0x100
#define WORD_SIZE_16           0x200
#define WORD_SIZE_24           0x400
#define WORD_SIZE_32           0x800
#define BIT_ORDER_LSB         0x1000
#define BIT_ORDER_MSB         0x2000
#define FLOW_CONTROL_ENABLE   0x4000
#define FLOW_CONTROL_DISABLE  0x8000
#define CLOCK_GATED          0x10000
#define CLOCK_NOT_GATED      0x20000

/* Values for SSP_IPOLARITY and SSP_OPOLARITY */
#define CLOCK_NORMAL         1
#define CLOCK_INVERT         2
#define CLOCK_INEGEDGE       CLOCK_NORMAL
#define CLOCK_IPOSEDGE       CLOCK_INVERT
#define FRAME_NORMAL         4
#define FRAME_INVERT         8
#define STATUS_NORMAL      0x10
#define STATUS_INVERT      0x20

/* Values for SSP_SPI */
#define SPI_MASTER           0
#define SPI_SLAVE            1

/* Values for SSP_INBUFCHUNK */
/* plain integer with the size of DMA chunks */

/* To ensure that the timestamps are aligned with the data being read
 * the read length MUST be a multiple of the length of the DMA buffers.
 *
 * Use a multiple of SSP_INPUT_CHUNK_SIZE defined below.
 */
#define SSP_INPUT_CHUNK_SIZE  256

/* Request struct to pass through the ioctl interface to read
 * data with timestamps.
 */
struct ssp_request {
	char __user *buf;	/* Where to put the data. */
	size_t len;		/* Size of buf. MUST be a multiple of */
				/* SSP_INPUT_CHUNK_SIZE! */
	struct timespec ts;	/* The time the data was sampled. */
};

#endif