ssb: Add support for 8bit register access

This adds support for 8bit wide register reads/writes.
This is needed in order to support the gigabit ethernet core.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
index 20add65215af..860d28c6d149 100644
--- a/include/linux/ssb/ssb.h
+++ b/include/linux/ssb/ssb.h
@@ -72,8 +72,10 @@ struct ssb_device;
 /* Lowlevel read/write operations on the device MMIO.
  * Internal, don't use that outside of ssb. */
 struct ssb_bus_ops {
+        u8 (*read8)(struct ssb_device *dev, u16 offset);
         u16 (*read16)(struct ssb_device *dev, u16 offset);
         u32 (*read32)(struct ssb_device *dev, u16 offset);
+        void (*write8)(struct ssb_device *dev, u16 offset, u8 value);
         void (*write16)(struct ssb_device *dev, u16 offset, u16 value);
         void (*write32)(struct ssb_device *dev, u16 offset, u32 value);
 };
@@ -344,6 +346,10 @@ void ssb_device_disable(struct ssb_device *dev, u32 core_specific_flags);
 
 
 /* Device MMIO register read/write functions. */
+static inline u8 ssb_read8(struct ssb_device *dev, u16 offset)
+{
+        return dev->ops->read8(dev, offset);
+}
 static inline u16 ssb_read16(struct ssb_device *dev, u16 offset)
 {
         return dev->ops->read16(dev, offset);
@@ -352,6 +358,10 @@ static inline u32 ssb_read32(struct ssb_device *dev, u16 offset)
 {
         return dev->ops->read32(dev, offset);
 }
+static inline void ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
+{
+        dev->ops->write8(dev, offset, value);
+}
 static inline void ssb_write16(struct ssb_device *dev, u16 offset, u16 value)
 {
         dev->ops->write16(dev, offset, value);