1/* arch/arm/plat-s3c/include/plat/iic.h 2 * 3 * Copyright 2004-2009 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * S3C - I2C Controller platform_device info 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11*/ 12 13#ifndef __ASM_ARCH_IIC_H 14#define __ASM_ARCH_IIC_H __FILE__ 15 16#define S3C_IICFLG_FILTER (1<<0) /* enable s3c2440 filter */ 17 18/** 19 * struct s3c2410_platform_i2c - Platform data for s3c I2C. 20 * @bus_num: The bus number to use (if possible). 21 * @flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER). 22 * @slave_addr: The I2C address for the slave device (if enabled). 23 * @frequency: The desired frequency in Hz of the bus. This is 24 * guaranteed to not be exceeded. If the caller does 25 * not care, use zero and the driver will select a 26 * useful default. 27 * @sda_delay: The delay (in ns) applied to SDA edges. 28 * @cfg_gpio: A callback to configure the pins for I2C operation. 29 */ 30struct s3c2410_platform_i2c { 31 int bus_num; 32 unsigned int flags; 33 unsigned int slave_addr; 34 unsigned long frequency; 35 unsigned int sda_delay; 36 37 void (*cfg_gpio)(struct platform_device *dev); 38}; 39 40/** 41 * s3c_i2c0_set_platdata - set platform data for i2c0 device 42 * @i2c: The platform data to set, or NULL for default data. 43 * 44 * Register the given platform data for use with the i2c0 device. This 45 * call copies the platform data, so the caller can use __initdata for 46 * their copy. 47 * 48 * This call will set cfg_gpio if is null to the default platform 49 * implementation. 50 * 51 * Any user of s3c_device_i2c0 should call this, even if it is with 52 * NULL to ensure that the device is given the default platform data 53 * as the driver will no longer carry defaults. 54 */ 55extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c); 56extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c); 57extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c); 58 59/* defined by architecture to configure gpio */ 60extern void s3c_i2c0_cfg_gpio(struct platform_device *dev); 61extern void s3c_i2c1_cfg_gpio(struct platform_device *dev); 62extern void s3c_i2c2_cfg_gpio(struct platform_device *dev); 63 64#endif /* __ASM_ARCH_IIC_H */ 65