diff options
Diffstat (limited to 'drivers/net/usb/smsc75xx.c')
| -rw-r--r-- | drivers/net/usb/smsc75xx.c | 240 |
1 files changed, 237 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 376143e8a1aa..b77ae76f4aa8 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -52,6 +52,7 @@ #define USB_PRODUCT_ID_LAN7500 (0x7500) #define USB_PRODUCT_ID_LAN7505 (0x7505) #define RXW_PADDING 2 +#define SUPPORTED_WAKE (WAKE_MAGIC) #define check_warn(ret, fmt, args...) \ ({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); }) @@ -65,6 +66,7 @@ struct smsc75xx_priv { struct usbnet *dev; u32 rfe_ctl; + u32 wolopts; u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; struct mutex dataport_mutex; spinlock_t rfe_ctl_lock; @@ -135,6 +137,30 @@ static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, return ret; } +static int smsc75xx_set_feature(struct usbnet *dev, u32 feature) +{ + if (WARN_ON_ONCE(!dev)) + return -EINVAL; + + cpu_to_le32s(&feature); + + return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, feature, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} + +static int smsc75xx_clear_feature(struct usbnet *dev, u32 feature) +{ + if (WARN_ON_ONCE(!dev)) + return -EINVAL; + + cpu_to_le32s(&feature); + + return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, feature, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} + /* Loop until the read is completed with timeout * called with phy_mutex held */ static int smsc75xx_phy_wait_not_busy(struct usbnet *dev) @@ -578,6 +604,26 @@ static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); } +static void smsc75xx_ethtool_get_wol(struct net_device *net, + struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); + + wolinfo->supported = SUPPORTED_WAKE; + wolinfo->wolopts = pdata->wolopts; +} + +static int smsc75xx_ethtool_set_wol(struct net_device *net, + struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); + + pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; + return 0; +} + static const struct ethtool_ops smsc75xx_ethtool_ops = { .get_link = usbnet_get_link, .nway_reset = usbnet_nway_reset, @@ -589,6 +635,8 @@ static const struct ethtool_ops smsc75xx_ethtool_ops = { .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, .get_eeprom = smsc75xx_ethtool_get_eeprom, .set_eeprom = smsc75xx_ethtool_set_eeprom, + .get_wol = smsc75xx_ethtool_get_wol, + .set_wol = smsc75xx_ethtool_set_wol, }; static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) @@ -756,6 +804,26 @@ static int smsc75xx_set_features(struct net_device *netdev, return 0; } +static int smsc75xx_wait_ready(struct usbnet *dev) +{ + int timeout = 0; + + do { + u32 buf; + int ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); + check_warn_return(ret, "Failed to read PMT_CTL: %d", ret); + + if (buf & PMT_CTL_DEV_RDY) + return 0; + + msleep(10); + timeout++; + } while (timeout < 100); + + netdev_warn(dev->net, "timeout waiting for device ready"); + return -EIO; +} + static int smsc75xx_reset(struct usbnet *dev) { struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); @@ -764,6 +832,9 @@ static int smsc75xx_reset(struct usbnet *dev) netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset"); + ret = smsc75xx_wait_ready(dev); + check_warn_return(ret, "device not ready in smsc75xx_reset"); + ret = smsc75xx_read_reg(dev, HW_CFG, &buf); check_warn_return(ret, "Failed to read HW_CFG: %d", ret); @@ -1083,6 +1154,169 @@ 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); + struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); + int ret; + u32 val; + + ret = usbnet_suspend(intf, message); + check_warn_return(ret, "usbnet_suspend error"); + + /* if no wol options set, enter lowest power SUSPEND2 mode */ + if (!(pdata->wolopts & SUPPORTED_WAKE)) { + netdev_info(dev->net, "entering SUSPEND2 mode"); + + /* disable energy detect (link up) & wake up events */ + ret = smsc75xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val &= ~(WUCSR_MPEN | WUCSR_WUEN); + + ret = smsc75xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + /* enter 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; + } + + if (pdata->wolopts & WAKE_MAGIC) { + /* clear any pending magic packet status */ + ret = smsc75xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val |= WUCSR_MPR; + + ret = smsc75xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + } + + /* enable/disable magic packup wake */ + ret = smsc75xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + if (pdata->wolopts & WAKE_MAGIC) { + netdev_info(dev->net, "enabling magic packet wakeup"); + val |= WUCSR_MPEN; + } else { + netdev_info(dev->net, "disabling magic packet wakeup"); + val &= ~WUCSR_MPEN; + } + + ret = smsc75xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + /* enable wol wakeup source */ + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + val |= PMT_CTL_WOL_EN; + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + /* enable receiver */ + ret = smsc75xx_read_reg(dev, MAC_RX, &val); + check_warn_return(ret, "Failed to read MAC_RX: %d", ret); + + val |= MAC_RX_RXEN; + + ret = smsc75xx_write_reg(dev, MAC_RX, val); + check_warn_return(ret, "Failed to write MAC_RX: %d", ret); + + /* some wol options are enabled, so enter SUSPEND0 */ + netdev_info(dev->net, "entering SUSPEND0 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_0; + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + /* clear wol status */ + val &= ~PMT_CTL_WUPS; + val |= PMT_CTL_WUPS_WOL; + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + + /* read back PMT_CTL */ + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + smsc75xx_set_feature(dev, USB_DEVICE_REMOTE_WAKEUP); + + return 0; +} + +static int smsc75xx_resume(struct usb_interface *intf) +{ + struct usbnet *dev = usb_get_intfdata(intf); + struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); + int ret; + u32 val; + + if (pdata->wolopts & WAKE_MAGIC) { + netdev_info(dev->net, "resuming from SUSPEND0"); + + smsc75xx_clear_feature(dev, USB_DEVICE_REMOTE_WAKEUP); + + /* Disable magic packup wake */ + ret = smsc75xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val &= ~WUCSR_MPEN; + + ret = smsc75xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + /* clear wake-up status */ + ret = smsc75xx_read_reg(dev, PMT_CTL, &val); + check_warn_return(ret, "Error reading PMT_CTL"); + + val &= ~PMT_CTL_WOL_EN; + val |= PMT_CTL_WUPS; + + ret = smsc75xx_write_reg(dev, PMT_CTL, val); + check_warn_return(ret, "Error writing PMT_CTL"); + } else { + 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) { @@ -1251,9 +1485,9 @@ 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, }; |