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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__
- #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_MAGIC 'P'
- #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 sport_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;
- };
- #endif
- #define SPORT_TCR1 0
- #define SPORT_TCR2 1
- #define SPORT_TCLKDIV 2
- #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
- #endif
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