[PATCH] 2/5 powerpc: Rework PowerMac i2c part 2

This is the continuation of the previous patch. This one removes the old
PowerMac i2c drivers (i2c-keywest and i2c-pmac-smu) and replaces them
both with a single stub driver that uses the new PowerMac low i2c layer.

Now that i2c-keywest is gone, the low-i2c code is extended to support
interrupt driver transfers. All i2c busses now appear as platform
devices. Compatibility with existing drivers should be maintained as the
i2c bus names have been kept identical, except for the SMU bus but in
that later case, all users has been fixed.

With that patch added, matching a device node to an i2c_adapter becomes
trivial.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-powerpc/pmac_low_i2c.h b/include/asm-powerpc/pmac_low_i2c.h
index adf4fa956572..480018f41e1a 100644
--- a/include/asm-powerpc/pmac_low_i2c.h
+++ b/include/asm-powerpc/pmac_low_i2c.h
@@ -70,6 +70,7 @@ extern struct device_node *pmac_i2c_get_controller(struct pmac_i2c_bus *bus);
 extern struct device_node *pmac_i2c_get_bus_node(struct pmac_i2c_bus *bus);
 extern int pmac_i2c_get_type(struct pmac_i2c_bus *bus);
 extern int pmac_i2c_get_flags(struct pmac_i2c_bus *bus);
+extern int pmac_i2c_get_channel(struct pmac_i2c_bus *bus);
 
 /* i2c layer adapter attach/detach */
 extern void pmac_i2c_attach_adapter(struct pmac_i2c_bus *bus,
@@ -77,6 +78,7 @@ extern void pmac_i2c_attach_adapter(struct pmac_i2c_bus *bus,
 extern void pmac_i2c_detach_adapter(struct pmac_i2c_bus *bus,
                                     struct i2c_adapter *adapter);
 extern struct i2c_adapter *pmac_i2c_get_adapter(struct pmac_i2c_bus *bus);
+extern struct pmac_i2c_bus *pmac_i2c_adapter_to_bus(struct i2c_adapter *adapter);
 
 /* March a device or bus with an i2c adapter structure, to be used by drivers
  * to match device-tree nodes with i2c adapters during adapter discovery