include/linux/platform_data/i2c-s3c2410.h

   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 */