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authorStephen Warren <swarren@nvidia.com>2016-09-15 12:53:22 -0600
committerJoe Hershberger <joe.hershberger@ni.com>2016-10-13 12:25:40 -0500
commitc9abfbdd66ed97e1cac8553d0b31bd23f68480a9 (patch)
tree1209ed09d3a968c644226db8ab8eadf4b07c458e /drivers/usb
parent6a2981a7132c206e6099938fa0476301f4dfe3fd (diff)
net: smsc95xx: fix DM MAC address reading
eth-uclass.c expects DM-capable Ethernet adapters to implement ops-> read_rom_hwaddr(), or for some other mechanism to set pdata->enetaddr, or for the user to set environment variable $usbethaddr. Without any of these, it will refuse to initialize the device since no valid MAC address is known. Implement this function for the smsc95xx driver. With this feature implemented, there is no point smsc95xx_init_common() re-reading the MAC address from ROM, so ifdef out this code when DM_ETH is enabled. This allows (at least) the built-in Ethernet on the NVIDIA Harmony board to operate again. Fixes: 0990fcb77219 ("net: smsc95xx: Add driver-model support") Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/eth/smsc95xx.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/eth/smsc95xx.c b/drivers/usb/eth/smsc95xx.c
index 7d9abfda3b..d4c8ea4a98 100644
--- a/drivers/usb/eth/smsc95xx.c
+++ b/drivers/usb/eth/smsc95xx.c
@@ -519,9 +519,11 @@ static int smsc95xx_init_common(struct usb_device *udev, struct ueth_data *dev,
debug("timeout waiting for PHY Reset\n");
return -ETIMEDOUT;
}
+#ifndef CONFIG_DM_ETH
if (!priv->have_hwaddr && smsc95xx_init_mac_address(enetaddr, udev) ==
0)
priv->have_hwaddr = 1;
+#endif
if (!priv->have_hwaddr) {
puts("Error: SMSC95xx: No MAC address set - set usbethaddr\n");
return -EADDRNOTAVAIL;
@@ -1022,6 +1024,19 @@ int smsc95xx_write_hwaddr(struct udevice *dev)
return smsc95xx_write_hwaddr_common(udev, priv, pdata->enetaddr);
}
+int smsc95xx_read_rom_hwaddr(struct udevice *dev)
+{
+ struct usb_device *udev = dev_get_parent_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ int ret;
+
+ ret = smsc95xx_init_mac_address(pdata->enetaddr, udev);
+ if (ret)
+ memset(pdata->enetaddr, 0, 6);
+
+ return 0;
+}
+
static int smsc95xx_eth_probe(struct udevice *dev)
{
struct smsc95xx_private *priv = dev_get_priv(dev);
@@ -1037,6 +1052,7 @@ static const struct eth_ops smsc95xx_eth_ops = {
.free_pkt = smsc95xx_free_pkt,
.stop = smsc95xx_eth_stop,
.write_hwaddr = smsc95xx_write_hwaddr,
+ .read_rom_hwaddr = smsc95xx_read_rom_hwaddr,
};
U_BOOT_DRIVER(smsc95xx_eth) = {