1 /* arch/arm/mach-s3c2410/include/mach/iic.h 2 * 3 * Copyright (c) 2004 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * S3C2410 - I2C Controller platfrom_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 /* Notes: 19 * 1) All frequencies are expressed in Hz 20 * 2) A value of zero is `do not care` 21 */ 22 23 struct s3c2410_platform_i2c { 24 int bus_num; /* bus number to use */ 25 unsigned int flags; 26 unsigned int slave_addr; /* slave address for controller */ 27 unsigned long bus_freq; /* standard bus frequency */ 28 unsigned long max_freq; /* max frequency for the bus */ 29 unsigned long min_freq; /* min frequency for the bus */ 30 unsigned int sda_delay; /* pclks (s3c2440 only) */ 31 32 void (*cfg_gpio)(struct platform_device *dev); 33 }; 34 35 /** 36 * s3c_i2c0_set_platdata - set platform data for i2c0 device 37 * @i2c: The platform data to set, or NULL for default data. 38 * 39 * Register the given platform data for use with the i2c0 device. This 40 * call copies the platform data, so the caller can use __initdata for 41 * their copy. 42 * 43 * This call will set cfg_gpio if is null to the default platform 44 * implementation. 45 * 46 * Any user of s3c_device_i2c0 should call this, even if it is with 47 * NULL to ensure that the device is given the default platform data 48 * as the driver will no longer carry defaults. 49 */ 50 extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c); 51 extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c); 52 53 /* defined by architecture to configure gpio */ 54 extern void s3c_i2c0_cfg_gpio(struct platform_device *dev); 55 extern void s3c_i2c1_cfg_gpio(struct platform_device *dev); 56 57 #endif /* __ASM_ARCH_IIC_H */ 58