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/* arch/arm/plat-s3c/include/plat/iic.h
*
* Copyright 2004-2009 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C - I2C Controller platform_device info
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_IIC_H
#define __ASM_ARCH_IIC_H __FILE__
#define S3C_IICFLG_FILTER (1<<0) /* enable s3c2440 filter */
/**
* struct s3c2410_platform_i2c - Platform data for s3c I2C.
* @bus_num: The bus number to use (if possible).
* @flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER).
* @slave_addr: The I2C address for the slave device (if enabled).
* @frequency: The desired frequency in Hz of the bus. This is
* guaranteed to not be exceeded. If the caller does
* not care, use zero and the driver will select a
* useful default.
* @sda_delay: The delay (in ns) applied to SDA edges.
* @cfg_gpio: A callback to configure the pins for I2C operation.
*/
struct s3c2410_platform_i2c {
int bus_num;
unsigned int flags;
unsigned int slave_addr;
unsigned long frequency;
unsigned int sda_delay;
void (*cfg_gpio)(struct platform_device *dev);
};
/**
* s3c_i2c0_set_platdata - set platform data for i2c0 device
* @i2c: The platform data to set, or NULL for default data.
*
* Register the given platform data for use with the i2c0 device. This
* call copies the platform data, so the caller can use __initdata for
* their copy.
*
* This call will set cfg_gpio if is null to the default platform
* implementation.
*
* Any user of s3c_device_i2c0 should call this, even if it is with
* NULL to ensure that the device is given the default platform data
* as the driver will no longer carry defaults.
*/
extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c);
/* defined by architecture to configure gpio */
extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
extern void s3c_i2c2_cfg_gpio(struct platform_device *dev);
#endif /* __ASM_ARCH_IIC_H */
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