LXR linux/include/linux/platform

   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
  18struct 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 */
  32struct 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 */
  57extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
  58extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
  59extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c);
  60extern void s3c_i2c3_set_platdata(struct s3c2410_platform_i2c *i2c);
  61extern void s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *i2c);
  62extern void s3c_i2c5_set_platdata(struct s3c2410_platform_i2c *i2c);
  63extern void s3c_i2c6_set_platdata(struct s3c2410_platform_i2c *i2c);
  64extern void s3c_i2c7_set_platdata(struct s3c2410_platform_i2c *i2c);
  65extern void s5p_i2c_hdmiphy_set_platdata(struct s3c2410_platform_i2c *i2c);
  66
  67/* defined by architecture to configure gpio */
  68extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
  69extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
  70extern void s3c_i2c2_cfg_gpio(struct platform_device *dev);
  71extern void s3c_i2c3_cfg_gpio(struct platform_device *dev);
  72extern void s3c_i2c4_cfg_gpio(struct platform_device *dev);
  73extern void s3c_i2c5_cfg_gpio(struct platform_device *dev);
  74extern void s3c_i2c6_cfg_gpio(struct platform_device *dev);
  75extern void s3c_i2c7_cfg_gpio(struct platform_device *dev);
  76
  77extern struct s3c2410_platform_i2c default_i2c_data;
  78
  79#endif /* __ASM_ARCH_IIC_H */
  80