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- /*
- * 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__ */
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