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- /*******************************************************************
- *
- * Copyright (c) 2007 by Silicon Motion, Inc. (SMI)
- *
- * All rights are reserved. Reproduction or in part is prohibited
- * without the written consent of the copyright owner.
- *
- * swi2c.h --- SM750/SM718 DDK
- * This file contains the definitions for i2c using software
- * implementation.
- *
- *******************************************************************/
- #ifndef _SWI2C_H_
- #define _SWI2C_H_
- /* Default i2c CLK and Data GPIO. These are the default i2c pins */
- #define DEFAULT_I2C_SCL 30
- #define DEFAULT_I2C_SDA 31
- /*
- * This function initializes the i2c attributes and bus
- *
- * Parameters:
- * i2cClkGPIO - The GPIO pin to be used as i2c SCL
- * i2cDataGPIO - The GPIO pin to be used as i2c SDA
- *
- * Return Value:
- * -1 - Fail to initialize the i2c
- * 0 - Success
- */
- long sm750_sw_i2c_init(
- unsigned char clk_gpio,
- unsigned char data_gpio
- );
- /*
- * This function reads the slave device's register
- *
- * Parameters:
- * addr - i2c Slave device address which register
- * to be read from
- * reg - Slave device's register to be read
- *
- * Return Value:
- * Register value
- */
- unsigned char sm750_sw_i2c_read_reg(
- unsigned char addr,
- unsigned char reg
- );
- /*
- * This function writes a value to the slave device's register
- *
- * Parameters:
- * addr - i2c Slave device address which register
- * to be written
- * reg - Slave device's register to be written
- * data - Data to be written to the register
- *
- * Result:
- * 0 - Success
- * -1 - Fail
- */
- long sm750_sw_i2c_write_reg(
- unsigned char addr,
- unsigned char reg,
- unsigned char data
- );
- #endif /* _SWI2C_H_ */
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