| /* |
| * 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 |
