wl1251: introduce wl1251_if_operations struct

Introduce an ops struct with read, write, and reset functions to
abstract away the details of the wl1251 bus interface.  Doing this
will allow SDIO to coexist with SPI by supplying its own I/O
routines.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h
index 665aca02bea..284bb508c87 100644
--- a/drivers/net/wireless/wl12xx/wl1251.h
+++ b/drivers/net/wireless/wl12xx/wl1251.h
@@ -281,11 +281,18 @@ struct wl1251_debugfs {
         struct dentry *excessive_retries;
 };
 
+struct wl1251_if_operations {
+        void (*read)(struct wl1251 *wl, int addr, void *buf, size_t len);
+        void (*write)(struct wl1251 *wl, int addr, void *buf, size_t len);
+        void (*reset)(struct wl1251 *wl);
+};
+
 struct wl1251 {
         struct ieee80211_hw *hw;
         bool mac80211_registered;
 
         struct spi_device *spi;
+        struct wl1251_if_operations *if_ops;
 
         void (*set_power)(bool enable);
         int irq;