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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 Sławek 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>
This commit is contained in:
Peter Korsgaard 2013-01-27 12:34:22 +00:00 committed by David S. Miller
parent 5f19d1219a
commit 6642f91c92
1 changed files with 29 additions and 1 deletions
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30
drivers/net/usb/dm9601.c
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@ -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
};