c975045656
This patch breaks lines that are longer than 80 characters and joins together those, that are too short and can be placed at one. Function calls and declarations are updated to fit kernel code style. Signed-off-by: Matej Dujava <mdujava@kocurkovo.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* Copyright (c) 2007 by Silicon Motion, Inc. (SMI)
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*
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* All rights are reserved. Reproduction or in part is prohibited
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* without the written consent of the copyright owner.
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*
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* swi2c.h --- SM750/SM718 DDK
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* This file contains the definitions for i2c using software
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* implementation.
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*
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*/
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#ifndef _SWI2C_H_
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#define _SWI2C_H_
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/* Default i2c CLK and Data GPIO. These are the default i2c pins */
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#define DEFAULT_I2C_SCL 30
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#define DEFAULT_I2C_SDA 31
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/*
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* This function initializes the i2c attributes and bus
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*
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* Parameters:
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* i2cClkGPIO - The GPIO pin to be used as i2c SCL
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* i2cDataGPIO - The GPIO pin to be used as i2c SDA
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*
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* Return Value:
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* -1 - Fail to initialize the i2c
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* 0 - Success
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*/
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long sm750_sw_i2c_init(unsigned char clk_gpio, unsigned char data_gpio);
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/*
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* This function reads the slave device's register
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*
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* Parameters:
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* addr - i2c Slave device address which register
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* to be read from
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* reg - Slave device's register to be read
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*
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* Return Value:
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* Register value
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*/
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unsigned char sm750_sw_i2c_read_reg(unsigned char addr, unsigned char reg);
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/*
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* This function writes a value to the slave device's register
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*
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* Parameters:
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* addr - i2c Slave device address which register
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* to be written
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* reg - Slave device's register to be written
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* data - Data to be written to the register
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*
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* Result:
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* 0 - Success
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* -1 - Fail
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*/
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long sm750_sw_i2c_write_reg(unsigned char addr,
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unsigned char reg,
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unsigned char data);
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#endif /* _SWI2C_H_ */
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