smsc911x: add dynamic bus configuration

Convert the driver to select 16-bit or 32-bit bus access at runtime,
at a small performance cost.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/smsc911x.h b/include/linux/smsc911x.h
index 47c4ffd10dbb..1cbf0313adde 100644
--- a/include/linux/smsc911x.h
+++ b/include/linux/smsc911x.h
@@ -28,6 +28,7 @@
 struct smsc911x_platform_config {
         unsigned int irq_polarity;
         unsigned int irq_type;
+        unsigned int flags;
         phy_interface_t phy_interface;
 };
 
@@ -39,4 +40,8 @@ struct smsc911x_platform_config {
 #define SMSC911X_IRQ_TYPE_OPEN_DRAIN            0
 #define SMSC911X_IRQ_TYPE_PUSH_PULL             1
 
+/* Constants for flags */
+#define SMSC911X_USE_16BIT                      (BIT(0))
+#define SMSC911X_USE_32BIT                      (BIT(1))
+
 #endif /* __LINUX_SMSC911X_H__ */