include/linux/platform_data/i2c-s3c2410.h

   1 /*
   2  * Copyright 2004-2009 Simtec Electronics
   3  *      Ben Dooks <ben@simtec.co.uk>
   4  *
   5  * S3C - I2C Controller platform_device info
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10 */
  11
  12 #ifndef __I2C_S3C2410_H
  13 #define __I2C_S3C2410_H __FILE__
  14
  15 #define S3C_IICFLG_FILTER       (1<<0)  /* enable s3c2440 filter */
  16
  17 struct platform_device;
  18
  19 /**
  20  *      struct s3c2410_platform_i2c - Platform data for s3c I2C.
  21  *      @bus_num: The bus number to use (if possible).
  22  *      @flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER).
  23  *      @slave_addr: The I2C address for the slave device (if enabled).
  24  *      @frequency: The desired frequency in Hz of the bus.  This is
  25  *                  guaranteed to not be exceeded.  If the caller does
  26  *                  not care, use zero and the driver will select a
  27  *                  useful default.
  28  *      @sda_delay: The delay (in ns) applied to SDA edges.
  29  *      @cfg_gpio: A callback to configure the pins for I2C operation.
  30  */
  31 struct s3c2410_platform_i2c {
  32         int             bus_num;
  33         unsigned int    flags;
  34         unsigned int    slave_addr;
  35         unsigned long   frequency;
  36         unsigned int    sda_delay;
  37
  38         void    (*cfg_gpio)(struct platform_device *dev);
  39 };
  40
  41 /**
  42  * s3c_i2c0_set_platdata - set platform data for i2c0 device
  43  * @i2c: The platform data to set, or NULL for default data.
  44  *
  45  * Register the given platform data for use with the i2c0 device. This
  46  * call copies the platform data, so the caller can use __initdata for
  47  * their copy.
  48  *
  49  * This call will set cfg_gpio if is null to the default platform
  50  * implementation.
  51  *
  52  * Any user of s3c_device_i2c0 should call this, even if it is with
  53  * NULL to ensure that the device is given the default platform data
  54  * as the driver will no longer carry defaults.
  55  */
  56 extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
  57 extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
  58 extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c);
  59 extern void s3c_i2c3_set_platdata(struct s3c2410_platform_i2c *i2c);
  60 extern void s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *i2c);
  61 extern void s3c_i2c5_set_platdata(struct s3c2410_platform_i2c *i2c);
  62 extern void s3c_i2c6_set_platdata(struct s3c2410_platform_i2c *i2c);
  63 extern void s3c_i2c7_set_platdata(struct s3c2410_platform_i2c *i2c);
  64 extern void s5p_i2c_hdmiphy_set_platdata(struct s3c2410_platform_i2c *i2c);
  65
  66 /* defined by architecture to configure gpio */
  67 extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
  68 extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
  69 extern void s3c_i2c2_cfg_gpio(struct platform_device *dev);
  70 extern void s3c_i2c3_cfg_gpio(struct platform_device *dev);
  71 extern void s3c_i2c4_cfg_gpio(struct platform_device *dev);
  72 extern void s3c_i2c5_cfg_gpio(struct platform_device *dev);
  73 extern void s3c_i2c6_cfg_gpio(struct platform_device *dev);
  74 extern void s3c_i2c7_cfg_gpio(struct platform_device *dev);
  75
  76 extern struct s3c2410_platform_i2c default_i2c_data;
  77
  78 #endif /* __I2C_S3C2410_H */