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