/* * 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> #endif #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 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