gpio: Add viperboard gpio driver
This adds the mfd cell to use the gpio a and gpio b part
of the Nano River Technologies viperboard.
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h
index 0d13424..42d339f 100644
--- a/include/linux/mfd/viperboard.h
+++ b/include/linux/mfd/viperboard.h
@@ -44,6 +44,8 @@
#define VPRBRD_USB_TIMEOUT_MS 100
#define VPRBRD_USB_REQUEST_MAJOR 0xea
#define VPRBRD_USB_REQUEST_MINOR 0xeb
+#define VPRBRD_USB_REQUEST_GPIOA 0xed
+#define VPRBRD_USB_REQUEST_GPIOB 0xdd
struct vprbrd_i2c_write_hdr {
u8 cmd;