arch/cris/include/uapi/asm/sync_serial.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * ioctl defines for synchronous serial port driver
   4  *
   5  * Copyright (c) 2001-2003 Axis Communications AB
   6  *
   7  * Author: Mikael Starvik
   8  *
   9  */
  10
  11 #ifndef SYNC_SERIAL_H
  12 #define SYNC_SERIAL_H
  13
  14 #include <linux/ioctl.h>
  15
  16 #define SSP_SPEED      _IOR('S', 0, unsigned int)
  17 #define SSP_MODE       _IOR('S', 1, unsigned int)
  18 #define SSP_FRAME_SYNC _IOR('S', 2, unsigned int)
  19 #define SSP_IPOLARITY  _IOR('S', 3, unsigned int)
  20 #define SSP_OPOLARITY  _IOR('S', 4, unsigned int)
  21 #define SSP_SPI        _IOR('S', 5, unsigned int)
  22 #define SSP_INBUFCHUNK _IOR('S', 6, unsigned int)
  23 #define SSP_INPUT      _IOR('S', 7, unsigned int)
  24
  25 /* Values for SSP_SPEED */
  26 #define SSP150        0
  27 #define SSP300        1
  28 #define SSP600        2
  29 #define SSP1200       3
  30 #define SSP2400       4
  31 #define SSP4800       5
  32 #define SSP9600       6
  33 #define SSP19200      7
  34 #define SSP28800      8
  35 #define SSP57600      9
  36 #define SSP115200    10
  37 #define SSP230400    11
  38 #define SSP460800    12
  39 #define SSP921600    13
  40 #define SSP3125000   14
  41 #define CODEC        15
  42 #define CODEC_f32768 16
  43
  44 #define FREQ_4MHz   0
  45 #define FREQ_2MHz   1
  46 #define FREQ_1MHz   2
  47 #define FREQ_512kHz 3
  48 #define FREQ_256kHz 4
  49 #define FREQ_128kHz 5
  50 #define FREQ_64kHz  6
  51 #define FREQ_32kHz  7
  52 /* FREQ_* with values where bit (value & 0x10) is set are */
  53 /* used for CODEC_f32768 */
  54 #define FREQ_4096kHz 16 /* CODEC_f32768 */
  55
  56 /* Used by application to set CODEC divider, word rate and frame rate */
  57 #define CODEC_VAL(freq, clk_per_sync, sync_per_frame) \
  58         ((CODEC + ((freq & 0x10) >> 4)) | (freq << 8) | \
  59                    (clk_per_sync << 16) | (sync_per_frame << 28))
  60
  61 /* Used by driver to extract speed */
  62 #define GET_SPEED(x) (x & 0xff)
  63 #define GET_FREQ(x) ((x & 0xff00) >> 8)
  64 #define GET_WORD_RATE(x) (((x & 0x0fff0000) >> 16) - 1)
  65 #define GET_FRAME_RATE(x) (((x & 0xf0000000) >> 28) - 1)
  66
  67 /* Values for SSP_MODE */
  68 #define MASTER_OUTPUT 0
  69 #define SLAVE_OUTPUT  1
  70 #define MASTER_INPUT  2
  71 #define SLAVE_INPUT   3
  72 #define MASTER_BIDIR  4
  73 #define SLAVE_BIDIR   5
  74
  75 /* Values for SSP_FRAME_SYNC */
  76 #define NORMAL_SYNC                1
  77 #define EARLY_SYNC                 2
  78 #define SECOND_WORD_SYNC     0x40000
  79 #define LATE_SYNC            0x80000
  80
  81 #define BIT_SYNC                   4
  82 #define WORD_SYNC                  8
  83 #define EXTENDED_SYNC           0x10
  84
  85 #define SYNC_OFF                0x20
  86 #define SYNC_ON                 0x40
  87 #define WORD_SIZE_8             0x80
  88 #define WORD_SIZE_12           0x100
  89 #define WORD_SIZE_16           0x200
  90 #define WORD_SIZE_24           0x400
  91 #define WORD_SIZE_32           0x800
  92 #define BIT_ORDER_LSB         0x1000
  93 #define BIT_ORDER_MSB         0x2000
  94 #define FLOW_CONTROL_ENABLE   0x4000
  95 #define FLOW_CONTROL_DISABLE  0x8000
  96 #define CLOCK_GATED          0x10000
  97 #define CLOCK_NOT_GATED      0x20000
  98
  99 /* Values for SSP_IPOLARITY and SSP_OPOLARITY */
 100 #define CLOCK_NORMAL         1
 101 #define CLOCK_INVERT         2
 102 #define CLOCK_INEGEDGE       CLOCK_NORMAL
 103 #define CLOCK_IPOSEDGE       CLOCK_INVERT
 104 #define FRAME_NORMAL         4
 105 #define FRAME_INVERT         8
 106 #define STATUS_NORMAL      0x10
 107 #define STATUS_INVERT      0x20
 108
 109 /* Values for SSP_SPI */
 110 #define SPI_MASTER           0
 111 #define SPI_SLAVE            1
 112
 113 /* Values for SSP_INBUFCHUNK */
 114 /* plain integer with the size of DMA chunks */
 115
 116 /* To ensure that the timestamps are aligned with the data being read
 117  * the read length MUST be a multiple of the length of the DMA buffers.
 118  *
 119  * Use a multiple of SSP_INPUT_CHUNK_SIZE defined below.
 120  */
 121 #define SSP_INPUT_CHUNK_SIZE  256
 122
 123 /* Request struct to pass through the ioctl interface to read
 124  * data with timestamps.
 125  */
 126 struct ssp_request {
 127         char __user *buf;       /* Where to put the data. */
 128         size_t len;             /* Size of buf. MUST be a multiple of */
 129                                 /* SSP_INPUT_CHUNK_SIZE! */
 130         struct timespec ts;     /* The time the data was sampled. */
 131 };
 132
 133 #endif