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authorPeter Korsgaard <jacmet@sunsite.dk>2013-01-27 16:34:22 +0400
committerDavid S. Miller <davem@davemloft.net>2013-01-28 09:18:04 +0400
commit6642f91c92da07369cf1e582503ea3ccb4a7f1a9 (patch)
treee9c2518e78f98808ff97c4b2fb4af2fab70fe43a /drivers/net/usb/dm9601.c
parent5f19d1219a5b96c7b00ad5c3f889030093a8d1a3 (diff)
downloadlinux-6642f91c92da07369cf1e582503ea3ccb4a7f1a9.tar.xz
dm9601: support dm9620 variant
dm9620 is a newer variant of dm9601 with more features (usb 2.0, checksum offload, ..), but it can also be put in a dm9601 compatible mode, allowing us to reuse the existing driver. This does mean that the extended features like checksum offload cannot be used, but that's hardly critical on a 100mbps interface. Thanks to SÅ‚awek Wernikowski <slawek@wernikowski.net> for providing me with a dm9620 based device to test. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/dm9601.c')
-rw-r--r--drivers/net/usb/dm9601.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c
index 011410f39c90..d7e99445518e 100644
--- a/drivers/net/usb/dm9601.c
+++ b/drivers/net/usb/dm9601.c
@@ -45,6 +45,12 @@
#define DM_MCAST_ADDR 0x16 /* 8 bytes */
#define DM_GPR_CTRL 0x1e
#define DM_GPR_DATA 0x1f
+#define DM_CHIP_ID 0x2c
+#define DM_MODE_CTRL 0x91 /* only on dm9620 */
+
+/* chip id values */
+#define ID_DM9601 0
+#define ID_DM9620 1
#define DM_MAX_MCAST 64
#define DM_MCAST_SIZE 8
@@ -348,7 +354,7 @@ static const struct net_device_ops dm9601_netdev_ops = {
static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
- u8 mac[ETH_ALEN];
+ u8 mac[ETH_ALEN], id;
ret = usbnet_get_endpoints(dev, intf);
if (ret)
@@ -389,6 +395,24 @@ static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
__dm9601_set_mac_address(dev);
}
+ if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) {
+ netdev_err(dev->net, "Error reading chip ID\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* put dm9620 devices in dm9601 mode */
+ if (id == ID_DM9620) {
+ u8 mode;
+
+ if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) {
+ netdev_err(dev->net, "Error reading MODE_CTRL\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f);
+ }
+
/* power up phy */
dm_write_reg(dev, DM_GPR_CTRL, 1);
dm_write_reg(dev, DM_GPR_DATA, 0);
@@ -571,6 +595,10 @@ static const struct usb_device_id products[] = {
USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
.driver_info = (unsigned long)&dm9601_info,
},
+ {
+ USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
{}, // END
};