mfd: convert DS1WM to use MFD core

This patch converts the DS1WM driver into an MFD cell. It also
calculates the bus_shift parameter from the memory resource size.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/mfd/ds1wm.h b/include/linux/mfd/ds1wm.h
new file mode 100644
index 000000000000..d4898ba18207
--- /dev/null
+++ b/include/linux/mfd/ds1wm.h
@@ -0,0 +1,5 @@
+/* MFD cell driver data for the DS1WM driver */
+
+struct ds1wm_driver_data {
+	int active_high;
+};