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* bfin_sport.h - userspace header for bfin sport driver
* Copyright 2004-2008 Analog Devices Inc.
* Licensed under the GPL-2 or later.
#ifndef __BFIN_SPORT_H__
#define __BFIN_SPORT_H__
#ifdef __KERNEL__
#include <linux/cdev.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/wait.h>
#define SPORT_MAJOR 237
#define SPORT_NR_DEVS 2
/* Sport mode: it can be set to TDM, i2s or others */
#define NORM_MODE 0x0
#define TDM_MODE 0x1
#define I2S_MODE 0x2
/* Data format, normal, a-law or u-law */
#define NORM_FORMAT 0x0
#define ALAW_FORMAT 0x2
#define ULAW_FORMAT 0x3
/* Function driver which use sport must initialize the structure */
struct sport_config {
/* TDM (multichannels), I2S or other mode */
unsigned int mode:3;
/* if TDM mode is selected, channels must be set */
int channels; /* Must be in 8 units */
unsigned int frame_delay:4; /* Delay between frame sync pulse and first bit */
/* I2S mode */
unsigned int right_first:1; /* Right stereo channel first */
/* In mormal mode, the following item need to be set */
unsigned int lsb_first:1; /* order of transmit or receive data */
unsigned int fsync:1; /* Frame sync required */
unsigned int data_indep:1; /* data independent frame sync generated */
unsigned int act_low:1; /* Active low TFS */
unsigned int late_fsync:1; /* Late frame sync */
unsigned int tckfe:1;
unsigned int sec_en:1; /* Secondary side enabled */
/* Choose clock source */
unsigned int int_clk:1; /* Internal or external clock */
/* If external clock is used, the following fields are ignored */
int serial_clk;
int fsync_clk;
unsigned int data_format:2; /* Normal, u-law or a-law */
int word_len; /* How length of the word in bits, 3-32 bits */
int dma_enabled;
/* Userspace interface */
#define SPORT_IOC_CONFIG _IOWR('P', 0x01, struct sport_config)
#ifdef __KERNEL__
struct sport_register {
unsigned short tcr1;
unsigned short reserved0;
unsigned short tcr2;
unsigned short reserved1;
unsigned short tclkdiv;
unsigned short reserved2;
unsigned short tfsdiv;
unsigned short reserved3;
unsigned long tx;
unsigned long reserved_l0;
unsigned long rx;
unsigned long reserved_l1;
unsigned short rcr1;
unsigned short reserved4;
unsigned short rcr2;
unsigned short reserved5;
unsigned short rclkdiv;
unsigned short reserved6;
unsigned short rfsdiv;
unsigned short reserved7;
unsigned short stat;
unsigned short reserved8;
unsigned short chnl;
unsigned short reserved9;
unsigned short mcmc1;
unsigned short reserved10;
unsigned short mcmc2;
unsigned short reserved11;
unsigned long mtcs0;
unsigned long mtcs1;
unsigned long mtcs2;
unsigned long mtcs3;
unsigned long mrcs0;
unsigned long mrcs1;
unsigned long mrcs2;
unsigned long mrcs3;
struct sport_dev {
struct cdev cdev; /* Char device structure */
int sport_num;
int dma_rx_chan;
int dma_tx_chan;
int rx_irq;
unsigned char *rx_buf; /* Buffer store the received data */
int rx_len; /* How many bytes will be received */
int rx_received; /* How many bytes has been received */
int tx_irq;
const unsigned char *tx_buf;
int tx_len;
int tx_sent;
int err_irq;
struct mutex mutex; /* mutual exclusion semaphore */
struct task_struct *task;
wait_queue_head_t waitq;
int wait_con;
struct sport_register *regs;
struct sport_config config;
#define SPORT_TCR1 0
#define SPORT_TCR2 1
#define SPORT_TFSDIV 3
#define SPORT_RCR1 8
#define SPORT_RCR2 9
#define SPORT_RCLKDIV 10
#define SPORT_RFSDIV 11
#define SPORT_CHANNEL 13
#define SPORT_MCMC1 14
#define SPORT_MCMC2 15
#define SPORT_MTCS0 16
#define SPORT_MTCS1 17
#define SPORT_MTCS2 18
#define SPORT_MTCS3 19
#define SPORT_MRCS0 20
#define SPORT_MRCS1 21
#define SPORT_MRCS2 22
#define SPORT_MRCS3 23