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a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
103 lines
3 KiB
C
103 lines
3 KiB
C
#ifndef I2C_EXPORT_H
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#define I2C_EXPORT_H
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/****************************************************
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*
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* Copyright Motrola 1999
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*
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****************************************************/
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/* These are the defined return values for the I2C_do_transaction function.
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* Any non-zero value indicates failure. Failure modes can be added for
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* more detailed error reporting.
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*/
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typedef enum _i2c_status
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{
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I2C_SUCCESS = 0,
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I2C_ERROR,
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} I2C_Status;
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/* These are the defined tasks for I2C_do_transaction.
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* Modes for SLAVE_RCV and SLAVE_XMIT will be added.
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*/
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typedef enum _i2c_transaction_mode
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{
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I2C_MASTER_RCV = 0,
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I2C_MASTER_XMIT = 1,
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} I2C_TRANSACTION_MODE;
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typedef enum _i2c_interrupt_mode
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{
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I2C_INT_DISABLE = 0,
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I2C_INT_ENABLE = 1,
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} I2C_INTERRUPT_MODE;
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typedef enum _i2c_stop
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{
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I2C_NO_STOP = 0,
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I2C_STOP = 1,
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} I2C_STOP_MODE;
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typedef enum _i2c_restart
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{
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I2C_NO_RESTART = 0,
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I2C_RESTART = 1,
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} I2C_RESTART_MODE;
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/******************** App. API ********************
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* The application API is for user level application
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* to use the functionality provided by I2C driver.
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* This is a "generic" I2C interface, it should contain
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* nothing specific to the Kahlua implementation.
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* Only the generic functions are exported by the library.
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*
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* Note: Its App.s responsibility to swap the data
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* byte. In our API, we just transfer whatever
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* we are given
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**************************************************/
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/* Initialize I2C unit with the following:
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* driver's slave address
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* interrupt enabled
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* optional pointer to application layer print function
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*
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* These parameters may be added:
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* desired clock rate
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* digital filter frequency sampling rate
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*
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* This function must be called before I2C unit can be used.
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*/
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extern I2C_Status I2C_Initialize(
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unsigned char addr, /* driver's I2C slave address */
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I2C_INTERRUPT_MODE en_int, /* 1 - enable I2C interrupt
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* 0 - disable I2C interrupt
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*/
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int (*app_print_function)(char *,...)); /* pointer to optional "printf"
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* provided by application
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*/
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/* Perform the given I2C transaction, only MASTER_XMIT and MASTER_RCV
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* are implemented. Both are only in polling mode.
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*
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* en_int controls interrupt/polling mode
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* act is the type of transaction
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* addr is the I2C address of the slave device
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* len is the length of data to send or receive
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* buffer is the address of the data buffer
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* stop = I2C_NO_STOP, don't signal STOP at end of transaction
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* I2C_STOP, signal STOP at end of transaction
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* retry is the timeout retry value, currently ignored
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* rsta = I2C_NO_RESTART, this is not continuation of existing transaction
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* I2C_RESTART, this is a continuation of existing transaction
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*/
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extern I2C_Status I2C_do_transaction( I2C_INTERRUPT_MODE en_int,
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I2C_TRANSACTION_MODE act,
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unsigned char i2c_addr,
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unsigned char data_addr,
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int len,
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char *buffer,
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I2C_STOP_MODE stop,
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int retry,
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I2C_RESTART_MODE rsta);
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#endif
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