arch/blackfin/include/asm/bfin_sport.h

   1 /*
   2  * bfin_sport.h - userspace header for bfin sport driver
   3  *
   4  * Copyright 2004-2008 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef __BFIN_SPORT_H__
  10 #define __BFIN_SPORT_H__
  11
  12 #define SPORT_MAJOR     237
  13 #define SPORT_NR_DEVS   2
  14
  15 /* Sport mode: it can be set to TDM, i2s or others */
  16 #define NORM_MODE       0x0
  17 #define TDM_MODE        0x1
  18 #define I2S_MODE        0x2
  19
  20 /* Data format, normal, a-law or u-law */
  21 #define NORM_FORMAT     0x0
  22 #define ALAW_FORMAT     0x2
  23 #define ULAW_FORMAT     0x3
  24
  25 /* Function driver which use sport must initialize the structure */
  26 struct sport_config {
  27         /* TDM (multichannels), I2S or other mode */
  28         unsigned int mode:3;
  29
  30         /* if TDM mode is selected, channels must be set */
  31         int channels;           /* Must be in 8 units */
  32         unsigned int frame_delay:4;     /* Delay between frame sync pulse and first bit */
  33
  34         /* I2S mode */
  35         unsigned int right_first:1;     /* Right stereo channel first */
  36
  37         /* In mormal mode, the following item need to be set */
  38         unsigned int lsb_first:1;       /* order of transmit or receive data */
  39         unsigned int fsync:1;   /* Frame sync required */
  40         unsigned int data_indep:1;      /* data independent frame sync generated */
  41         unsigned int act_low:1; /* Active low TFS */
  42         unsigned int late_fsync:1;      /* Late frame sync */
  43         unsigned int tckfe:1;
  44         unsigned int sec_en:1;  /* Secondary side enabled */
  45
  46         /* Choose clock source */
  47         unsigned int int_clk:1; /* Internal or external clock */
  48
  49         /* If external clock is used, the following fields are ignored */
  50         int serial_clk;
  51         int fsync_clk;
  52
  53         unsigned int data_format:2;     /* Normal, u-law or a-law */
  54
  55         int word_len;           /* How length of the word in bits, 3-32 bits */
  56         int dma_enabled;
  57 };
  58
  59 /* Userspace interface */
  60 #define SPORT_IOC_MAGIC         'P'
  61 #define SPORT_IOC_CONFIG        _IOWR('P', 0x01, struct sport_config)
  62
  63 #ifdef __KERNEL__
  64
  65 struct sport_register {
  66         unsigned short tcr1;
  67         unsigned short reserved0;
  68         unsigned short tcr2;
  69         unsigned short reserved1;
  70         unsigned short tclkdiv;
  71         unsigned short reserved2;
  72         unsigned short tfsdiv;
  73         unsigned short reserved3;
  74         unsigned long tx;
  75         unsigned long reserved_l0;
  76         unsigned long rx;
  77         unsigned long reserved_l1;
  78         unsigned short rcr1;
  79         unsigned short reserved4;
  80         unsigned short rcr2;
  81         unsigned short reserved5;
  82         unsigned short rclkdiv;
  83         unsigned short reserved6;
  84         unsigned short rfsdiv;
  85         unsigned short reserved7;
  86         unsigned short stat;
  87         unsigned short reserved8;
  88         unsigned short chnl;
  89         unsigned short reserved9;
  90         unsigned short mcmc1;
  91         unsigned short reserved10;
  92         unsigned short mcmc2;
  93         unsigned short reserved11;
  94         unsigned long mtcs0;
  95         unsigned long mtcs1;
  96         unsigned long mtcs2;
  97         unsigned long mtcs3;
  98         unsigned long mrcs0;
  99         unsigned long mrcs1;
 100         unsigned long mrcs2;
 101         unsigned long mrcs3;
 102 };
 103
 104 struct sport_dev {
 105         struct cdev cdev;       /* Char device structure */
 106
 107         int sport_num;
 108
 109         int dma_rx_chan;
 110         int dma_tx_chan;
 111
 112         int rx_irq;
 113         unsigned char *rx_buf;  /* Buffer store the received data */
 114         int rx_len;             /* How many bytes will be received */
 115         int rx_received;        /* How many bytes has been received */
 116
 117         int tx_irq;
 118         const unsigned char *tx_buf;
 119         int tx_len;
 120         int tx_sent;
 121
 122         int sport_err_irq;
 123
 124         struct mutex mutex;     /* mutual exclusion semaphore */
 125         struct task_struct *task;
 126
 127         wait_queue_head_t waitq;
 128         int     wait_con;
 129         struct sport_register *regs;
 130         struct sport_config config;
 131 };
 132
 133 #endif
 134
 135 #define SPORT_TCR1      0
 136 #define SPORT_TCR2      1
 137 #define SPORT_TCLKDIV   2
 138 #define SPORT_TFSDIV    3
 139 #define SPORT_RCR1      8
 140 #define SPORT_RCR2      9
 141 #define SPORT_RCLKDIV   10
 142 #define SPORT_RFSDIV    11
 143 #define SPORT_CHANNEL   13
 144 #define SPORT_MCMC1     14
 145 #define SPORT_MCMC2     15
 146 #define SPORT_MTCS0     16
 147 #define SPORT_MTCS1     17
 148 #define SPORT_MTCS2     18
 149 #define SPORT_MTCS3     19
 150 #define SPORT_MRCS0     20
 151 #define SPORT_MRCS1     21
 152 #define SPORT_MRCS2     22
 153 #define SPORT_MRCS3     23
 154
 155 #endif