LXR linux/include/linux/of

   1/*
   2 * Generic I2C API implementation for PowerPC.
   3 *
   4 * Copyright (c) 2008 Jochen Friedrich <jochen@scram.de>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 */
  11
  12#ifndef __LINUX_OF_I2C_H
  13#define __LINUX_OF_I2C_H
  14
  15#if defined(CONFIG_OF_I2C) || defined(CONFIG_OF_I2C_MODULE)
  16#include <linux/i2c.h>
  17
  18extern void of_i2c_register_devices(struct i2c_adapter *adap);
  19
  20/* must call put_device() when done with returned i2c_client device */
  21extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
  22
  23/* must call put_device() when done with returned i2c_adapter device */
  24extern struct i2c_adapter *of_find_i2c_adapter_by_node(
  25                                                struct device_node *node);
  26
  27#else
  28static inline void of_i2c_register_devices(struct i2c_adapter *adap)
  29{
  30        return;
  31}
  32
  33static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
  34{
  35        return NULL;
  36}
  37
  38/* must call put_device() when done with returned i2c_adapter device */
  39static inline struct i2c_adapter *of_find_i2c_adapter_by_node(
  40                                                struct device_node *node)
  41{
  42        return NULL;
  43}
  44#endif /* CONFIG_OF_I2C */
  45
  46#endif /* __LINUX_OF_I2C_H */
  47