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 struct platform_device; 19 20 /** 21 * struct s3c2410_platform_i2c - Platform data for s3c I2C. 22 * @bus_num: The bus number to use (if possible). 23 * @flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER). 24 * @slave_addr: The I2C address for the slave device (if enabled). 25 * @frequency: The desired frequency in Hz of the bus. This is 26 * guaranteed to not be exceeded. If the caller does 27 * not care, use zero and the driver will select a 28 * useful default. 29 * @sda_delay: The delay (in ns) applied to SDA edges. 30 * @cfg_gpio: A callback to configure the pins for I2C operation. 31 */ 32 struct s3c2410_platform_i2c { 33 int bus_num; 34 unsigned int flags; 35 unsigned int slave_addr; 36 unsigned long frequency; 37 unsigned int sda_delay; 38 39 void (*cfg_gpio)(struct platform_device *dev); 40 }; 41 42 /** 43 * s3c_i2c0_set_platdata - set platform data for i2c0 device 44 * @i2c: The platform data to set, or NULL for default data. 45 * 46 * Register the given platform data for use with the i2c0 device. This 47 * call copies the platform data, so the caller can use __initdata for 48 * their copy. 49 * 50 * This call will set cfg_gpio if is null to the default platform 51 * implementation. 52 * 53 * Any user of s3c_device_i2c0 should call this, even if it is with 54 * NULL to ensure that the device is given the default platform data 55 * as the driver will no longer carry defaults. 56 */ 57 extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c); 58 extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c); 59 extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c); 60 extern void s3c_i2c3_set_platdata(struct s3c2410_platform_i2c *i2c); 61 extern void s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *i2c); 62 extern void s3c_i2c5_set_platdata(struct s3c2410_platform_i2c *i2c); 63 extern void s3c_i2c6_set_platdata(struct s3c2410_platform_i2c *i2c); 64 extern void s3c_i2c7_set_platdata(struct s3c2410_platform_i2c *i2c); 65 extern void s5p_i2c_hdmiphy_set_platdata(struct s3c2410_platform_i2c *i2c); 66 67 /* defined by architecture to configure gpio */ 68 extern void s3c_i2c0_cfg_gpio(struct platform_device *dev); 69 extern void s3c_i2c1_cfg_gpio(struct platform_device *dev); 70 extern void s3c_i2c2_cfg_gpio(struct platform_device *dev); 71 extern void s3c_i2c3_cfg_gpio(struct platform_device *dev); 72 extern void s3c_i2c4_cfg_gpio(struct platform_device *dev); 73 extern void s3c_i2c5_cfg_gpio(struct platform_device *dev); 74 extern void s3c_i2c6_cfg_gpio(struct platform_device *dev); 75 extern void s3c_i2c7_cfg_gpio(struct platform_device *dev); 76 77 extern struct s3c2410_platform_i2c default_i2c_data; 78 79 #endif /* __ASM_ARCH_IIC_H */ 80