diff options
Diffstat (limited to 'drivers/net/usb/smsc95xx.c')
| -rw-r--r-- | drivers/net/usb/smsc95xx.c | 185 |
1 files changed, 177 insertions, 8 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index ba0360fb857f..7479a5761d0d 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -46,6 +46,7 @@ #define SMSC95XX_INTERNAL_PHY_ID (1) #define SMSC95XX_TX_OVERHEAD (8) #define SMSC95XX_TX_OVERHEAD_CSUM (12) +#define SUPPORTED_WAKE (WAKE_MAGIC) #define check_warn(ret, fmt, args...) \ ({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); }) @@ -60,6 +61,7 @@ struct smsc95xx_priv { u32 mac_cr; u32 hash_hi; u32 hash_lo; + u32 wolopts; spinlock_t mac_cr_lock; }; @@ -125,6 +127,30 @@ static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, return ret; } +static int smsc95xx_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 smsc95xx_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 __must_check smsc95xx_phy_wait_not_busy(struct usbnet *dev) @@ -636,6 +662,26 @@ smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, } } +static void smsc95xx_ethtool_get_wol(struct net_device *net, + struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); + + wolinfo->supported = SUPPORTED_WAKE; + wolinfo->wolopts = pdata->wolopts; +} + +static int smsc95xx_ethtool_set_wol(struct net_device *net, + struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); + + pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; + return 0; +} + static const struct ethtool_ops smsc95xx_ethtool_ops = { .get_link = usbnet_get_link, .nway_reset = usbnet_nway_reset, @@ -649,6 +695,8 @@ static const struct ethtool_ops smsc95xx_ethtool_ops = { .set_eeprom = smsc95xx_ethtool_set_eeprom, .get_regs_len = smsc95xx_ethtool_getregslen, .get_regs = smsc95xx_ethtool_getregs, + .get_wol = smsc95xx_ethtool_get_wol, + .set_wol = smsc95xx_ethtool_set_wol, }; static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) @@ -1021,26 +1069,147 @@ static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); + struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 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"); + /* 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 = smsc95xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); + + ret = smsc95xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + ret = smsc95xx_read_reg(dev, PM_CTRL, &val); + check_warn_return(ret, "Error reading PM_CTRL"); + + val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); + + ret = smsc95xx_write_reg(dev, PM_CTRL, val); + check_warn_return(ret, "Error writing PM_CTRL"); + + /* enter suspend2 mode */ + ret = smsc95xx_read_reg(dev, PM_CTRL, &val); + check_warn_return(ret, "Error reading PM_CTRL"); + + val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); + val |= PM_CTL_SUS_MODE_2; + + ret = smsc95xx_write_reg(dev, PM_CTRL, val); + check_warn_return(ret, "Error writing PM_CTRL"); + + return 0; + } + + if (pdata->wolopts & WAKE_MAGIC) { + /* clear any pending magic packet status */ + ret = smsc95xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val |= WUCSR_MPR_; + + ret = smsc95xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + } + + /* enable/disable magic packup wake */ + ret = smsc95xx_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 = smsc95xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + /* enable wol wakeup source */ + ret = smsc95xx_read_reg(dev, PM_CTRL, &val); + check_warn_return(ret, "Error reading PM_CTRL"); + + val |= PM_CTL_WOL_EN_; + + ret = smsc95xx_write_reg(dev, PM_CTRL, val); + check_warn_return(ret, "Error writing PM_CTRL"); + + /* enable receiver */ + smsc95xx_start_rx_path(dev); + + /* some wol options are enabled, so enter SUSPEND0 */ + netdev_info(dev->net, "entering SUSPEND0 mode"); ret = smsc95xx_read_reg(dev, PM_CTRL, &val); check_warn_return(ret, "Error reading PM_CTRL"); - val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); - val |= PM_CTL_SUS_MODE_2; + val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); + val |= PM_CTL_SUS_MODE_0; ret = smsc95xx_write_reg(dev, PM_CTRL, val); check_warn_return(ret, "Error writing PM_CTRL"); + /* clear wol status */ + val &= ~PM_CTL_WUPS_; + val |= PM_CTL_WUPS_WOL_; + ret = smsc95xx_write_reg(dev, PM_CTRL, val); + check_warn_return(ret, "Error writing PM_CTRL"); + + /* read back PM_CTRL */ + ret = smsc95xx_read_reg(dev, PM_CTRL, &val); + check_warn_return(ret, "Error reading PM_CTRL"); + + smsc95xx_set_feature(dev, USB_DEVICE_REMOTE_WAKEUP); + + return 0; +} + +static int smsc95xx_resume(struct usb_interface *intf) +{ + struct usbnet *dev = usb_get_intfdata(intf); + struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); + int ret; + u32 val; + + BUG_ON(!dev); + + if (pdata->wolopts & WAKE_MAGIC) { + smsc95xx_clear_feature(dev, USB_DEVICE_REMOTE_WAKEUP); + + /* Disable magic packup wake */ + ret = smsc95xx_read_reg(dev, WUCSR, &val); + check_warn_return(ret, "Error reading WUCSR"); + + val &= ~WUCSR_MPEN_; + + ret = smsc95xx_write_reg(dev, WUCSR, val); + check_warn_return(ret, "Error writing WUCSR"); + + /* clear wake-up status */ + ret = smsc95xx_read_reg(dev, PM_CTRL, &val); + check_warn_return(ret, "Error reading PM_CTRL"); + + val &= ~PM_CTL_WOL_EN_; + val |= PM_CTL_WUPS_; + + ret = smsc95xx_write_reg(dev, PM_CTRL, val); + check_warn_return(ret, "Error writing PM_CTRL"); + } + + return usbnet_resume(intf); + check_warn_return(ret, "usbnet_resume error"); + return 0; } @@ -1307,8 +1476,8 @@ static struct usb_driver smsc95xx_driver = { .id_table = products, .probe = usbnet_probe, .suspend = smsc95xx_suspend, - .resume = usbnet_resume, - .reset_resume = usbnet_resume, + .resume = smsc95xx_resume, + .reset_resume = smsc95xx_resume, .disconnect = usbnet_disconnect, .disable_hub_initiated_lpm = 1, }; |