diff options
author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-05 15:39:24 -0500 |
---|---|---|
committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-05 15:39:24 -0500 |
commit | 7211bb9b64f17b23834d91fc3d0c1d78671ee9a8 (patch) | |
tree | 541909f86c31fee97cd70d28ec2fe5c23e1ceb02 /include/asm-powerpc/pmac_low_i2c.h | |
parent | f1e691a24955ea987f021f378324fb5003b1b208 (diff) | |
parent | 70d9d825e0a5a78ec1dacaaaf5c72ff5b0206fab (diff) |
Merge branch 'master'
Diffstat (limited to 'include/asm-powerpc/pmac_low_i2c.h')
-rw-r--r-- | include/asm-powerpc/pmac_low_i2c.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-powerpc/pmac_low_i2c.h b/include/asm-powerpc/pmac_low_i2c.h new file mode 100644 index 000000000000..809a5963d5e7 --- /dev/null +++ b/include/asm-powerpc/pmac_low_i2c.h @@ -0,0 +1,43 @@ +/* + * 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__ */ |