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__ */