From 12c03f59c3909159010b87a926f5626d4380d441 Mon Sep 17 00:00:00 2001
From: Magnus Damm <magnus.damm@gmail.com>
Date: Mon, 9 Jun 2008 16:33:55 -0700
Subject: 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>
---
 drivers/net/smc911x.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

(limited to 'drivers/net/smc911x.h')

diff --git a/drivers/net/smc911x.h b/drivers/net/smc911x.h
index 271a3e8cf68..266232271a7 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
-- 
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