diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ppc/pmac_low_i2c.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-ppc/pmac_low_i2c.h')
-rw-r--r-- | include/asm-ppc/pmac_low_i2c.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-ppc/pmac_low_i2c.h b/include/asm-ppc/pmac_low_i2c.h new file mode 100644 index 000000000000..809a5963d5e7 --- /dev/null +++ b/include/asm-ppc/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__ */ |