smc911x: introduce platform data flags

This patch adds a new header file for platform data information
together with code that adds run time bus width and irq flag support.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/drivers/net/smc911x.h b/drivers/net/smc911x.h
index 271a3e8cf683..266232271a72 100644
--- a/drivers/net/smc911x.h
+++ b/drivers/net/smc911x.h
@@ -29,6 +29,7 @@
 #ifndef _SMC911X_H_
 #define _SMC911X_H_
 
+#include <linux/smc911x.h>
 /*
  * Use the DMA feature on PXA chips
  */
@@ -42,6 +43,12 @@
   #define SMC_USE_16BIT         0
   #define SMC_USE_32BIT         1
   #define SMC_IRQ_SENSE         IRQF_TRIGGER_LOW
+#else
+/*
+ * Default configuration
+ */
+
+#define SMC_DYNAMIC_BUS_CONFIG
 #endif
 
 /* store this information for the driver.. */
@@ -92,12 +99,84 @@ struct smc911x_local {
         struct device *dev;
 #endif
         void __iomem *base;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+        struct smc911x_platdata cfg;
+#endif
 };
 
 /*
  * Define the bus width specific IO macros
  */
 
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+static inline unsigned int SMC_inl(struct smc911x_local *lp, int reg)
+{
+        void __iomem *ioaddr = lp->base + reg;
+
+        if (lp->cfg.flags & SMC911X_USE_32BIT)
+                return readl(ioaddr);
+
+        if (lp->cfg.flags & SMC911X_USE_16BIT)
+                return readw(ioaddr) | (readw(ioaddr + 2) << 16);
+
+        BUG();
+}
+
+static inline void SMC_outl(unsigned int value, struct smc911x_local *lp,
+                            int reg)
+{
+        void __iomem *ioaddr = lp->base + reg;
+
+        if (lp->cfg.flags & SMC911X_USE_32BIT) {
+                writel(value, ioaddr);
+                return;
+        }
+
+        if (lp->cfg.flags & SMC911X_USE_16BIT) {
+                writew(value & 0xffff, ioaddr);
+                writew(value >> 16, ioaddr + 2);
+                return;
+        }
+
+        BUG();
+}
+
+static inline void SMC_insl(struct smc911x_local *lp, int reg,
+                              void *addr, unsigned int count)
+{
+        void __iomem *ioaddr = lp->base + reg;
+
+        if (lp->cfg.flags & SMC911X_USE_32BIT) {
+                readsl(ioaddr, addr, count);
+                return;
+        }
+
+        if (lp->cfg.flags & SMC911X_USE_16BIT) {
+                readsw(ioaddr, addr, count * 2);
+                return;
+        }
+
+        BUG();
+}
+
+static inline void SMC_outsl(struct smc911x_local *lp, int reg,
+                             void *addr, unsigned int count)
+{
+        void __iomem *ioaddr = lp->base + reg;
+
+        if (lp->cfg.flags & SMC911X_USE_32BIT) {
+                writesl(ioaddr, addr, count);
+                return;
+        }
+
+        if (lp->cfg.flags & SMC911X_USE_16BIT) {
+                writesw(ioaddr, addr, count * 2);
+                return;
+        }
+
+        BUG();
+}
+#else
 #if     SMC_USE_16BIT
 #define SMC_inl(lp, r)           ((readw((lp)->base + (r)) & 0xFFFF) + (readw((lp)->base + (r) + 2) << 16))
 #define SMC_outl(v, lp, r)                       \
@@ -115,6 +194,8 @@ struct smc911x_local {
 #define SMC_outsl(lp, r, p, l)   writesl((int*)((lp)->base + (r)), p, l)
 
 #endif /* SMC_USE_16BIT */
+#endif /* SMC_DYNAMIC_BUS_CONFIG */
+
 
 #ifdef SMC_USE_PXA_DMA
 #define SMC_USE_DMA