summaryrefslogtreecommitdiff
path: root/cpu/mpc824x/drivers/i2c/i2c.h
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/mpc824x/drivers/i2c/i2c.h')
-rw-r--r--cpu/mpc824x/drivers/i2c/i2c.h309
1 files changed, 0 insertions, 309 deletions
diff --git a/cpu/mpc824x/drivers/i2c/i2c.h b/cpu/mpc824x/drivers/i2c/i2c.h
deleted file mode 100644
index 48a401d9076..00000000000
--- a/cpu/mpc824x/drivers/i2c/i2c.h
+++ /dev/null
@@ -1,309 +0,0 @@
-#ifndef I2C_H
-#define I2C_H
-
-/****************************************************
- *
- * Copyright Motrola 1999
- *
- ****************************************************/
-#define get_eumbbar() CFG_EUMB_ADDR
-
-#define I2CADR 0x00003000
-#define I2CFDR 0x00003004
-#define I2CCR 0x00003008
-#define I2CSR 0x0000300C
-#define I2CDR 0x00003010
-
-typedef enum _i2cstatus
-{
- I2CSUCCESS = 0x3000,
- I2CADDRESS,
- I2CERROR,
- I2CBUFFFULL,
- I2CBUFFEMPTY,
- I2CXMITERROR,
- I2CRCVERROR,
- I2CBUSBUSY,
- I2CALOSS,
- I2CNOEVENT,
-} I2CStatus;
-
-typedef enum i2c_control
-{
- MEN = 0x00000080,
- MIEN = 0x00000040,
- MSTA = 0x00000020,
- MTX = 0x00000010,
- TXAK = 0x00000008,
- RSTA = 0x00000004,
-} I2C_CONTROL;
-
-typedef enum i2c_status
-{
- MCF = 0x00000080,
- MAAS = 0x00000040,
- MBB = 0x00000020,
- MAL = 0x00000010,
- SRW = 0x00000004,
- MIF = 0x00000002,
- RXAK = 0x00000001,
-} I2C_STATUS;
-
-typedef struct _i2c_ctrl
-{
- unsigned int reserved0 : 24;
- unsigned int men : 1;
- unsigned int mien : 1;
- unsigned int msta : 1;
- unsigned int mtx : 1;
- unsigned int txak : 1;
- unsigned int rsta : 1;
- unsigned int reserved1 : 2;
-} I2C_CTRL;
-
-typedef struct _i2c_stat
-{
- unsigned int rsrv0 : 24;
- unsigned int mcf : 1;
- unsigned int maas : 1;
- unsigned int mbb : 1;
- unsigned int mal : 1;
- unsigned int rsrv1 : 1;
- unsigned int srw : 1;
- unsigned int mif : 1;
- unsigned int rxak : 1;
-} I2C_STAT;
-
-typedef enum _i2c_mode
-{
- RCV = 0,
- XMIT = 1,
-} I2C_MODE;
-
-/******************** App. API ********************
- * The application API is for user level application
- * to use the funcitonality provided by I2C driver
- *
- * Note: Its App.s responsibility to swap the data
- * byte. In our API, we just transfer whatever
- * we are given
- **************************************************/
-/**
- * Note:
- *
- * In all following functions,
- * the caller shall pass the configured embedded utility memory
- * block base, EUMBBAR.
- **/
-
-/* Send a buffer of data to the intended rcv_addr.
- * If stop_flag is set, after the whole buffer
- * is sent, generate a STOP signal provided that the
- * receiver doesn't signal the STOP in the middle.
- * I2C is the master performing transmitting. If
- * no STOP signal is generated at the end of current
- * transaction, the master can generate a START signal
- * to another slave addr.
- *
- * return I2CSUCCESS if no error.
- */
-static I2CStatus I2C_put( unsigned int eumbbar,
- unsigned char rcv_addr, /* receiver's address */
- unsigned char *buffer_ptr, /* pointer of data to be sent */
- unsigned int length, /* number of byte of in the buffer */
- unsigned int stop_flag, /* 1 - signal STOP when buffer is empty
- * 0 - no STOP signal when buffer is empty
- */
- unsigned int is_cnt ); /* 1 - this is a restart, don't check MBB
- * 0 - this is a new start, check MBB
- */
-
-/* Receive a buffer of data from the desired sender_addr
- * If stop_flag is set, when the buffer is full and the
- * sender does not signal STOP, generate a STOP signal.
- * I2C is the master performing receiving. If no STOP signal
- * is generated, the master can generate a START signal
- * to another slave addr.
- *
- * return I2CSUCCESS if no error.
- */
-static I2CStatus I2C_get( unsigned int eumbbar,
- unsigned char sender_addr, /* sender's address */
- unsigned char *buffer_ptr, /* pointer of receiving buffer */
- unsigned int length, /* length of the receiving buffer */
- unsigned int stop_flag, /* 1 - signal STOP when buffer is full
- * 0 - no STOP signal when buffer is full
- */
- unsigned int is_cnt ); /* 1 - this is a restart, don't check MBB
- * 0 - this is a new start, check MBB
- */
-
-#if 0 /* the I2C_write and I2C_read functions are not active */
-/* Send a buffer of data to the requiring master.
- * If stop_flag is set, after the whole buffer is sent,
- * generate a STOP signal provided that the requiring
- * receiver doesn't signal the STOP in the middle.
- * I2C is the slave performing transmitting.
- *
- * return I2CSUCCESS if no error.
- *
- * Note: due to the Kahlua design, slave transmitter
- * shall not signal STOP since there is no way
- * for master to detect it, causing I2C bus hung.
- *
- * For the above reason, the stop_flag is always
- * set, i.e., 1.
- *
- * programmer shall use the timer on Kahlua to
- * control the interval of data byte at the
- * master side.
- */
-static I2CStatus I2C_write( unsigned int eumbbar,
- unsigned char *buffer_ptr, /* pointer of data to be sent */
- unsigned int length, /* number of byte of in the buffer */
- unsigned int stop_flag ); /* 1 - signal STOP when buffer is empty
- * 0 - no STOP signal when buffer is empty
- */
-
- /* Receive a buffer of data from the sending master.
- * If stop_flag is set, when the buffer is full and the
- * sender does not signal STOP, generate a STOP signal.
- * I2C is the slave performing receiving.
- *
- * return I2CSUCCESS if no error.
- */
-static I2CStatus I2C_read(unsigned int eumbbar,
- unsigned char *buffer_ptr, /* pointer of receiving buffer */
- unsigned int length, /* length of the receiving buffer */
- unsigned int stop_flag ); /* 1 - signal STOP when buffer is full
- * 0 - no STOP signal when buffer is full
- */
-#endif /* of if0 for turning off I2C_read & I2C_write */
-
-/* if interrupt is not used, this is the timer event handler.
- * After each fixed time interval, this function can be called
- * to check the I2C status and call appropriate function to
- * handle the status event.
- */
-static I2CStatus I2C_Timer_Event( unsigned int eumbbar, I2CStatus (*handler)( unsigned int ) );
-
-/********************* Kernel API ************************
- * Kernel APIs are functions I2C driver provides to the
- * O.S.
- *********************************************************/
-
-/******************* device I/O function ***************/
-
-/* Generate a START signal in the desired mode.
- * I2C is the master.
- *
- * return I2CSUCCESS if no error.
- * I2CERROR if i2c unit is not enabled.
- * I2CBUSBUSY if bus cannot be granted
- */
-static I2CStatus I2C_Start( unsigned int eumbbar,
- unsigned char slave_addr, /* address of the receiver */
- I2C_MODE mode, /* XMIT(1) - put (write)
- * RCV(0) - get (read)
- */
- unsigned int is_cnt ); /* 1 - this is a restart, don't check MBB
- * 0 - this is a new start, check MBB
- */
-
-/* Generate a STOP signal to terminate the transaction. */
-static I2CStatus I2C_Stop( unsigned int eumbbar );
-
-/* Do a one-byte master transmit.
- *
- * return I2CBUFFEMPTY if this is the last byte.
- * Otherwise return I2CSUCCESS
- */
-static I2CStatus I2C_Master_Xmit( unsigned int eumbbar );
-
-/* Do a one-byte master receive.
- *
- * return I2CBUFFFULL if this is the last byte.
- * Otherwise return I2CSUCCESS
- */
-static I2CStatus I2C_Master_Rcv( unsigned int eumbbar );
-
-/* Do a one-byte slave transmit.
- *
- * return I2CBUFFEMPTY if this is the last byte.
- * Otherwise return I2CSUCCESS
- *
- */
-static I2CStatus I2C_Slave_Xmit( unsigned int eumbbar );
-
-/* Do a one-byte slave receive.
- *
- * return I2CBUFFFULL if this is the last byte.
- * Otherwise return I2CSUCCESS
- */
-static I2CStatus I2C_Slave_Rcv( unsigned int eumbbar );
-
-/* Process slave address phase.
- *
- * return I2CADDRESS if this is slave receiver's address phase
- * Otherwise return the result of slave xmit one byte.
- */
-static I2CStatus I2C_Slave_Addr( unsigned int eumbbar );
-
-/******************* Device Control Fucntion ****************/
-/* Initialize I2C unit with desired frequency divider,
- * driver's slave address w/o interrupt enabled.
- *
- * This function must be called before I2C unit can
- * be used.
- */
-static I2CStatus I2C_Init( unsigned int eumbbar,
- unsigned char fdr, /* frequency divider */
- unsigned char addr, /* driver's address used for receiving */
- unsigned int en_int); /* 1 - enable I2C interrupt
- * 0 - disable I2C interrup
- */
-
-/* I2C interrupt service routine.
- *
- * return I2CADDRESS if it is receiver's (either master or slave) address phase.
- * return the result of xmit or receive one byte
- */
-static I2CStatus I2C_ISR(unsigned int eumbbar );
-
-/* Set I2C Status, i.e., write to I2CSR */
-static void I2C_Set_Stat( unsigned int eumbbar, I2C_STAT stat );
-
-/* Query I2C Status, i.e., read I2CSR */
-static I2C_STAT I2C_Get_Stat( unsigned int eumbbar );
-
-/* Change I2C Control bits, i.e., write to I2CCR */
-static void I2C_Set_Ctrl( unsigned int eumbbar, I2C_CTRL ); /* new control value */
-
-/* Query I2C Control bits, i.e., read I2CCR */
-static I2C_CTRL I2C_Get_Ctrl( unsigned int eumbbar );
-
-/* This function performs the work for I2C_do_transaction. The work is
- * split into this function to enable I2C_do_transaction to first transmit
- * the data address to the I2C slave device without putting the data address
- * into the first byte of the buffer.
- *
- * en_int controls interrupt/polling mode
- * act is the type of transaction
- * i2c_addr is the I2C address of the slave device
- * len is the length of data to send or receive
- * buffer is the address of the data buffer
- * stop = I2C_NO_STOP, don't signal STOP at end of transaction
- * I2C_STOP, signal STOP at end of transaction
- * retry is the timeout retry value, currently ignored
- * rsta = I2C_NO_RESTART, this is not continuation of existing transaction
- * I2C_RESTART, this is a continuation of existing transaction
- */
-static I2C_Status I2C_do_buffer( I2C_INTERRUPT_MODE en_int,
- I2C_TRANSACTION_MODE act,
- unsigned char i2c_addr,
- int len,
- unsigned char *buffer,
- I2C_STOP_MODE stop,
- int retry,
- I2C_RESTART_MODE rsta);
-#endif