smsc95xx: detect chip revision specific features

Instead of storing the number of wake-up frame filter registers
in the pdata structure, this patch changes the driver to detect
the type of device we have and store its available features.

The new two features will be used in future patches.

This patch is intended to have no change in behaviour.

Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 20 insertions, 9 deletions

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index e8465fecf43a..3bacb4153f3d 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -51,6 +51,10 @@
 #define SUPPORTED_WAKE			(WAKE_UCAST | WAKE_BCAST | \
 					 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
 
+#define FEATURE_8_WAKEUP_FILTERS	(0x01)
+#define FEATURE_PHY_NLP_CROSSOVER	(0x02)
+#define FEATURE_AUTOSUSPEND		(0x04)
+
 #define check_warn(ret, fmt, args...) \
 	({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); })
 
@@ -66,7 +70,7 @@ struct smsc95xx_priv {
 	u32 hash_lo;
 	u32 wolopts;
 	spinlock_t mac_cr_lock;
-	int wuff_filter_count;
+	u8 features;
 };
 
 static bool turbo_mode = true;
@@ -1031,10 +1035,14 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
 	ret = smsc95xx_read_reg(dev, ID_REV, &val);
 	check_warn_return(ret, "Failed to read ID_REV: %d\n", ret);
 	val >>= 16;
-	if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9512_))
-		pdata->wuff_filter_count = LAN9500A_WUFF_NUM;
-	else
-		pdata->wuff_filter_count = LAN9500_WUFF_NUM;
+
+	if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
+	    (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
+		pdata->features = (FEATURE_8_WAKEUP_FILTERS |
+			FEATURE_PHY_NLP_CROSSOVER |
+			FEATURE_AUTOSUSPEND);
+	else if (val == ID_REV_CHIP_ID_9512_)
+		pdata->features = FEATURE_8_WAKEUP_FILTERS;
 
 	dev->net->netdev_ops = &smsc95xx_netdev_ops;
 	dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
@@ -1109,6 +1117,9 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
 		u32 command[2];
 		u32 offset[2];
 		u32 crc[4];
+		int wuff_filter_count =
+			(pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
+			LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
 		int i, filter = 0;
 
 		memset(command, 0, sizeof(command));
@@ -1166,7 +1177,7 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
 			filter++;
 		}
 
-		for (i = 0; i < (pdata->wuff_filter_count * 4); i++) {
+		for (i = 0; i < (wuff_filter_count * 4); i++) {
 			ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
 			if (ret < 0)
 				kfree(filter_mask);
@@ -1174,17 +1185,17 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
 		}
 		kfree(filter_mask);
 
-		for (i = 0; i < (pdata->wuff_filter_count / 4); i++) {
+		for (i = 0; i < (wuff_filter_count / 4); i++) {
 			ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
 			check_warn_return(ret, "Error writing WUFF");
 		}
 
-		for (i = 0; i < (pdata->wuff_filter_count / 4); i++) {
+		for (i = 0; i < (wuff_filter_count / 4); i++) {
 			ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
 			check_warn_return(ret, "Error writing WUFF");
 		}
 
-		for (i = 0; i < (pdata->wuff_filter_count / 2); i++) {
+		for (i = 0; i < (wuff_filter_count / 2); i++) {
 			ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
 			check_warn_return(ret, "Error writing WUFF");
 		}