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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ppc/pmac_low_i2c.h
Linux-2.6.12-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.h43
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 00000000000..809a5963d5e
--- /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__ */