You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.2 KiB
43 lines
1.2 KiB
/*
|
|
* include/asm-ppc/pmac_low_i2c.h
|
|
*
|
|
* Copyright (C) 2003 Ben. Herrenschmidt (benh@kernel.crashing.org)
|
|
*
|
|
* 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 __PMAC_LOW_I2C_H__
|
|
#define __PMAC_LOW_I2C_H__
|
|
|
|
/* i2c mode (based on the platform functions format) */
|
|
enum {
|
|
pmac_low_i2c_mode_dumb = 1,
|
|
pmac_low_i2c_mode_std = 2,
|
|
pmac_low_i2c_mode_stdsub = 3,
|
|
pmac_low_i2c_mode_combined = 4,
|
|
};
|
|
|
|
/* RW bit in address */
|
|
enum {
|
|
pmac_low_i2c_read = 0x01,
|
|
pmac_low_i2c_write = 0x00
|
|
};
|
|
|
|
/* Init, called early during boot */
|
|
extern void pmac_init_low_i2c(void);
|
|
|
|
/* Locking functions exposed to i2c-keywest */
|
|
int pmac_low_i2c_lock(struct device_node *np);
|
|
int pmac_low_i2c_unlock(struct device_node *np);
|
|
|
|
/* Access functions for platform code */
|
|
int pmac_low_i2c_open(struct device_node *np, int channel);
|
|
int pmac_low_i2c_close(struct device_node *np);
|
|
int pmac_low_i2c_setmode(struct device_node *np, int mode);
|
|
int pmac_low_i2c_xfer(struct device_node *np, u8 addrdir, u8 subaddr, u8 *data, int len);
|
|
|
|
|
|
#endif /* __PMAC_LOW_I2C_H__ */
|
|
|