[U-Boot] [PATCH 6/6] net: asix: add AX88772B support

[Lucas Stach]

Add AX88772B ID together with two fixes needed to make this work.

1. The packet length check has to be adjusted, as all ASIX chips
only use 11 bits to indicate the length. AX88772B uses the other
bits to indicate unrelated things, which cause the check to fail.
This fix is based on a fix for the Linux kernel by Marek Vasut.
Linux upstream commit: bca0beb9363f8487ac902931a50eb00180a2d14a

2. AX88772B provides several bulk endpoints. Only the first
IN/OUT endpoints work in the default configuration. So stop
enumeration after we found them to avoid overwriting the
endpoint config with a non-working one.

Signed-off-by: Lucas Stach <dev at lynxeye.de>
---
 drivers/usb/eth/asix.c | 30 +++++++++++++++++++-----------
 1 Datei geändert, 19 Zeilen hinzugefügt(+), 11 Zeilen entfernt(-)

diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c
index 6ab3e82..79246d8 100644
--- a/drivers/usb/eth/asix.c
+++ b/drivers/usb/eth/asix.c
@@ -543,13 +543,13 @@ static int asix_recv(struct eth_device *eth)
 		}
 		memcpy(&packet_len, buf_ptr, sizeof(packet_len));
 		le32_to_cpus(&packet_len);
-		if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) {
+		if (((~packet_len >> 16) & 0x7ff) != (packet_len & 0x7ff)) {
 			debug("Rx: malformed packet length: %#x (%#x:%#x)\n",
-			      packet_len, (packet_len >> 16) ^ 0xffff,
-			      packet_len & 0xffff);
+			      packet_len, (~packet_len >> 16) & 0x7ff,
+			      packet_len & 0x7ff);
 			return -1;
 		}
-		packet_len = packet_len & 0xffff;
+		packet_len = packet_len & 0x7ff;
 		if (packet_len > actual_len - sizeof(packet_len)) {
 			debug("Rx: too large packet: %d\n", packet_len);
 			return -1;
@@ -597,6 +597,7 @@ static const struct asix_dongle asix_dongles[] = {
 	{ 0x13b1, 0x0018, FLAG_TYPE_AX88172 },	/* Linksys 200M v2.1 */
 	{ 0x1557, 0x7720, FLAG_TYPE_AX88772 },	/* 0Q0 cable ethernet */
 	{ 0x2001, 0x3c05, FLAG_TYPE_AX88772 },	/* DLink DUB-E100 H/W Ver B1 Alternate */
+	{ 0x0b95, 0x772b, FLAG_TYPE_AX88772B | FLAG_EEPROM_MAC }, /* ASIX 88772B */
 	{ 0x0000, 0x0000, FLAG_NONE }	/* END - Do not remove */
 };
 
@@ -606,6 +607,7 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
 {
 	struct usb_interface *iface;
 	struct usb_interface_descriptor *iface_desc;
+	int ep_in_found = 0, ep_out_found = 0;
 	int i;
 
 	/* let's examine the device now */
@@ -649,13 +651,19 @@ int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
 		/* is it an BULK endpoint? */
 		if ((iface->ep_desc[i].bmAttributes &
 		     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
-			if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
-				ss->ep_in = iface->ep_desc[i].bEndpointAddress &
-					USB_ENDPOINT_NUMBER_MASK;
-			else
-				ss->ep_out =
-					iface->ep_desc[i].bEndpointAddress &
-					USB_ENDPOINT_NUMBER_MASK;
+			if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN) {
+				if (!ep_in_found) {
+					ss->ep_in = iface->ep_desc[i].bEndpointAddress &
+					            USB_ENDPOINT_NUMBER_MASK;
+					ep_in_found = 1;
+				}
+			} else {
+				if (!ep_out_found) {
+					ss->ep_out = iface->ep_desc[i].bEndpointAddress &
+					             USB_ENDPOINT_NUMBER_MASK;
+					ep_out_found = 1;
+				}
+			}
 		}
 
 		/* is it an interrupt endpoint? */
-- 
1.7.11.4