diff options
Diffstat (limited to 'drivers/net/usb/smsc75xx.c')
| -rw-r--r-- | drivers/net/usb/smsc75xx.c | 57 |
1 files changed, 54 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 1f45f7b2fe63..759e577008b0 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -1106,6 +1106,57 @@ static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) } } +static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct usbnet *dev = usb_get_intfdata(intf); + int ret; + u32 val; + + if (WARN_ON_ONCE(!dev)) + return -EINVAL; + + ret = usbnet_suspend(intf, message); + check_warn_return(ret, "usbnet_suspend error"); + + netdev_info(dev->net, "entering SUSPEND2 mode"); + + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); + val |= PMT_CTL_SUS_MODE_2; + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + return 0; +} + +static int smsc75xx_resume(struct usb_interface *intf) +{ + struct usbnet *dev = usb_get_intfdata(intf); + int ret; + u32 val; + + if (WARN_ON_ONCE(!dev)) + return -EINVAL; + + netdev_info(dev->net, "resuming from SUSPEND2"); + + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + val |= PMT_CTL_PHY_PWRUP; + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + ret = smsc75xx_wait_ready(dev); + check_warn_return(ret, "device not ready in smsc75xx_resume"); + + return usbnet_resume(intf); +} + static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, u32 rx_cmd_a, u32 rx_cmd_b) { @@ -1274,9 +1325,9 @@ static struct usb_driver smsc75xx_driver = { .name = SMSC_CHIPNAME, .id_table = products, .probe = usbnet_probe, - .suspend = usbnet_suspend, - .resume = usbnet_resume, - .reset_resume = usbnet_resume, + .suspend = smsc75xx_suspend, + .resume = smsc75xx_resume, + .reset_resume = smsc75xx_resume, .disconnect = usbnet_disconnect, .disable_hub_initiated_lpm = 1, }; |