i2c_messages.c File Reference

#include <tenstorrent/smc_msg.h>
#include <tenstorrent/msgqueue.h>
#include "dw_apb_i2c.h"

Macros
#define	DATA_TOO_LARGE   0x01
#define	BYTE_GET(v, b)

Functions
static uint8_t	i2c_message_handler (const union request *request, struct response *response)
	Handler for TT_SMC_MSG_I2C_MESSAGE messages.
	REGISTER_MESSAGE (TT_SMC_MSG_I2C_MESSAGE, i2c_message_handler)

Macro Definition Documentation

BYTE_GET

#define BYTE_GET	(		v,
			b )

Value:

FIELD_GET(0xFFu << ((b) * 8), (v))

DATA_TOO_LARGE

#define DATA_TOO_LARGE   0x01

Function Documentation

i2c_message_handler()

uint8_t i2c_message_handler ( const union request * request, struct response * response )

static

Handler for TT_SMC_MSG_I2C_MESSAGE messages.

Performs I2C read/write transactions. The message can contain both write and read operations in a single transaction.

Parameters

request	Pointer to the host request message, use request->i2c_message for structured access
response	Pointer to the response message to be sent back to host, will contain: Read data if read operation was requested

Returns

0 on success

non-zero on error

See also

i2c_message_rqst_t

REGISTER_MESSAGE()

REGISTER_MESSAGE	(	TT_SMC_MSG_I2C_MESSAGE	,
		i2c_message_handler	)