usb: r8a66597-hcd: add function for external controller

R8A66597 has the pin of WR0 and WR1. So, if one write-pin of CPU
connects to the pins, we have to change the setting of FIFOSEL
register in the controller. If we don't change the setting,
the controller cannot send the data of odd length.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/usb/r8a66597.h b/include/linux/usb/r8a66597.h
index 26d216734057..30e171683a85 100644
--- a/include/linux/usb/r8a66597.h
+++ b/include/linux/usb/r8a66597.h
@@ -42,6 +42,9 @@ struct r8a66597_platdata {
 
         /* set one = big endian, set zero = little endian */
         unsigned        endian:1;
+
+        /* (external controller only) set one = WR0_N shorted to WR1_N */
+        unsigned        wr0_shorted_to_wr1:1;
 };
 
 /* Register definitions */