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| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * include/asm-ppc/pmac_low_i2c.h | |
| 3 | * | |
| 4 | * Copyright (C) 2003 Ben. Herrenschmidt (benh@kernel.crashing.org) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | */ | |
| 12 | #ifndef __PMAC_LOW_I2C_H__ | |
| 13 | #define __PMAC_LOW_I2C_H__ | |
| 88ced031 | 14 | #ifdef __KERNEL__ |
| 1da177e4 LT |
15 | |
| 16 | /* i2c mode (based on the platform functions format) */ | |
| 17 | enum { | |
| 18 | pmac_low_i2c_mode_dumb = 1, | |
| 19 | pmac_low_i2c_mode_std = 2, | |
| 20 | pmac_low_i2c_mode_stdsub = 3, | |
| 21 | pmac_low_i2c_mode_combined = 4, | |
| 22 | }; | |
| 23 | ||
| 24 | /* RW bit in address */ | |
| 25 | enum { | |
| 26 | pmac_low_i2c_read = 0x01, | |
| 27 | pmac_low_i2c_write = 0x00 | |
| 28 | }; | |
| 29 | ||
| 30 | /* Init, called early during boot */ | |
| 31 | extern void pmac_init_low_i2c(void); | |
| 32 | ||
| 33 | /* Locking functions exposed to i2c-keywest */ | |
| 34 | int pmac_low_i2c_lock(struct device_node *np); | |
| 35 | int pmac_low_i2c_unlock(struct device_node *np); | |
| 36 | ||
| 37 | /* Access functions for platform code */ | |
| 38 | int pmac_low_i2c_open(struct device_node *np, int channel); | |
| 39 | int pmac_low_i2c_close(struct device_node *np); | |
| 40 | int pmac_low_i2c_setmode(struct device_node *np, int mode); | |
| 41 | int pmac_low_i2c_xfer(struct device_node *np, u8 addrdir, u8 subaddr, u8 *data, int len); | |
| 42 | ||
| 43 | ||
| 88ced031 | 44 | #endif /* __KERNEL__ */ |
| 1da177e4 | 45 | #endif /* __PMAC_LOW_I2C_H__ */ |