smc911x: Add IRQ polarity configuration

Platforms like ARM Ltd's RealView require the IRQ polarity bit to be set
for the SMC9118 chip. This patch allows the dynamic configuration via
the smc911x_platdata structure.

This patch also changes the smc91x_platdata structure name to the
correct smc911x_platdata in the smc911x_drv_probe() function.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

2 files changed, 9 insertions, 3 deletions

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index ec32b5d89c92..2c78229ad04b 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -180,7 +180,7 @@ static void PRINT_PKT(u_char *buf, int length)
 static void smc911x_reset(struct net_device *dev)
 {
         struct smc911x_local *lp = netdev_priv(dev);
-        unsigned int reg, timeout=0, resets=1;
+        unsigned int reg, timeout=0, resets=1, irq_cfg;
         unsigned long flags;
 
         DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
@@ -252,7 +252,12 @@ static void smc911x_reset(struct net_device *dev)
          * Deassert IRQ for 1*10us for edge type interrupts
          * and drive IRQ pin push-pull
          */
-        SMC_SET_IRQ_CFG(lp, (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_);
+        irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+        if (lp->cfg.irq_polarity)
+                irq_cfg |= INT_CFG_IRQ_POL_;
+#endif
+        SMC_SET_IRQ_CFG(lp, irq_cfg);
 
         /* clear anything saved */
         if (lp->pending_tx_skb != NULL) {
@@ -2054,7 +2059,7 @@ err_out:
  */
 static int smc911x_drv_probe(struct platform_device *pdev)
 {
-        struct smc91x_platdata *pd = pdev->dev.platform_data;
+        struct smc911x_platdata *pd = pdev->dev.platform_data;
         struct net_device *ndev;
         struct resource *res;
         struct smc911x_local *lp;
diff --git a/include/linux/smc911x.h b/include/linux/smc911x.h
index b58f54c24183..521f37143fae 100644
--- a/include/linux/smc911x.h
+++ b/include/linux/smc911x.h
@@ -7,6 +7,7 @@
 struct smc911x_platdata {
         unsigned long flags;
         unsigned long irq_flags; /* IRQF_... */
+        int irq_polarity;
 };
 
 #endif /* __SMC911X_H__ */