2526c151c3
The of_find_i2c_device_by_node function allows you to follow a reference in the device tree to an i2c device node and then locate the linux device instantiated by the device tree. Example use: an I2S bus driver finding the i2c_device instance for a codec described by a device tree node. This was waiting for Anton's i2c patches that were just added. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
23 lines
716 B
C
23 lines
716 B
C
/*
|
|
* Generic I2C API implementation for PowerPC.
|
|
*
|
|
* Copyright (c) 2008 Jochen Friedrich <jochen@scram.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef __LINUX_OF_I2C_H
|
|
#define __LINUX_OF_I2C_H
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
void of_register_i2c_devices(struct i2c_adapter *adap,
|
|
struct device_node *adap_node);
|
|
|
|
/* must call put_device() when done with returned i2c_client device */
|
|
struct i2c_client *of_find_i2c_device_by_node(struct device_node *node);
|
|
|
|
#endif /* __LINUX_OF_I2C_H */
|