| /* |
| * 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__ */ |
