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smsc95xx: add phylib support

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Generally, each PHY has their own configuration and it can be done
through an external PHY driver.  The smsc95xx driver uses only the
hard-coded internal PHY configuration.

This patch adds phylib support to probe external PHY drivers for
configuring external PHYs.

The MDI-X configuration for the internal PHYs moves from
drivers/net/usb/smsc95xx.c to drivers/net/phy/smsc.c.

Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andre Edich 2020-08-26 13:17:17 +02:00 committed by David S. Miller
parent ad90a73f02
commit 05b35e7eb9
3 changed files with 204 additions and 266 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
drivers/net/phy/smsc.c
View File

@ -21,6 +21,17 @@
#include <linux/netdevice.h>
#include <linux/smscphy.h>
/* Vendor-specific PHY Definitions */
/* EDPD NLP / crossover time configuration */
#define PHY_EDPD_CONFIG 16
#define PHY_EDPD_CONFIG_EXT_CROSSOVER_ 0x0001
/* Control/Status Indication Register */
#define SPECIAL_CTRL_STS 27
#define SPECIAL_CTRL_STS_OVRRD_AMDIX_ 0x8000
#define SPECIAL_CTRL_STS_AMDIX_ENABLE_ 0x4000
#define SPECIAL_CTRL_STS_AMDIX_STATE_ 0x2000
struct smsc_hw_stat {
const char *string;
u8 reg;
@ -96,6 +107,54 @@ static int lan911x_config_init(struct phy_device *phydev)
return smsc_phy_ack_interrupt(phydev);
}
static int lan87xx_config_aneg(struct phy_device *phydev)
{
int rc;
int val;
switch (phydev->mdix_ctrl) {
case ETH_TP_MDI:
val = SPECIAL_CTRL_STS_OVRRD_AMDIX_;
break;
case ETH_TP_MDI_X:
val = SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
SPECIAL_CTRL_STS_AMDIX_STATE_;
break;
case ETH_TP_MDI_AUTO:
val = SPECIAL_CTRL_STS_AMDIX_ENABLE_;
break;
default:
return genphy_config_aneg(phydev);
}
rc = phy_read(phydev, SPECIAL_CTRL_STS);
if (rc < 0)
return rc;
rc &= ~(SPECIAL_CTRL_STS_OVRRD_AMDIX_ |
SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
SPECIAL_CTRL_STS_AMDIX_STATE_);
rc |= val;
phy_write(phydev, SPECIAL_CTRL_STS, rc);
phydev->mdix = phydev->mdix_ctrl;
return genphy_config_aneg(phydev);
}
static int lan87xx_config_aneg_ext(struct phy_device *phydev)
{
int rc;
/* Extend Manual AutoMDIX timer */
rc = phy_read(phydev, PHY_EDPD_CONFIG);
if (rc < 0)
return rc;
rc |= PHY_EDPD_CONFIG_EXT_CROSSOVER_;
phy_write(phydev, PHY_EDPD_CONFIG, rc);
return lan87xx_config_aneg(phydev);
}
/*
* The LAN87xx suffers from rare absence of the ENERGYON-bit when Ethernet cable
* plugs in while LAN87xx is in Energy Detect Power-Down mode. This leads to
@ -250,6 +309,9 @@ static struct phy_driver smsc_phy_driver[] = {
.suspend = genphy_suspend,
.resume = genphy_resume,
}, {
/* This covers internal PHY (phy_id: 0x0007C0C3) for
* LAN9500 (PID: 0x9500), LAN9514 (PID: 0xec00), LAN9505 (PID: 0x9505)
*/
.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
.phy_id_mask = 0xfffffff0,
.name = "SMSC LAN8700",
@ -262,6 +324,7 @@ static struct phy_driver smsc_phy_driver[] = {
.read_status = lan87xx_read_status,
.config_init = smsc_phy_config_init,
.soft_reset = smsc_phy_reset,
.config_aneg = lan87xx_config_aneg,
/* IRQ related */
.ack_interrupt = smsc_phy_ack_interrupt,
@ -293,6 +356,9 @@ static struct phy_driver smsc_phy_driver[] = {
.suspend = genphy_suspend,
.resume = genphy_resume,
}, {
/* This covers internal PHY (phy_id: 0x0007C0F0) for
* LAN9500A (PID: 0x9E00), LAN9505A (PID: 0x9E01)
*/
.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
.phy_id_mask = 0xfffffff0,
.name = "SMSC LAN8710/LAN8720",
@ -306,6 +372,7 @@ static struct phy_driver smsc_phy_driver[] = {
.read_status = lan87xx_read_status,
.config_init = smsc_phy_config_init,
.soft_reset = smsc_phy_reset,
.config_aneg = lan87xx_config_aneg_ext,
/* IRQ related */
.ack_interrupt = smsc_phy_ack_interrupt,

2
drivers/net/usb/Kconfig
View File

@ -345,6 +345,8 @@ config USB_NET_SMSC75XX
config USB_NET_SMSC95XX
tristate "SMSC LAN95XX based USB 2.0 10/100 ethernet devices"
depends on USB_USBNET
select PHYLIB
select SMSC_PHY
select BITREVERSE
select CRC16
select CRC32

401
drivers/net/usb/smsc95xx.c
View File

@ -18,10 +18,12 @@
#include <linux/usb/usbnet.h>
#include <linux/slab.h>
#include <linux/of_net.h>
#include <linux/mdio.h>
#include <linux/phy.h>
#include "smsc95xx.h"
#define SMSC_CHIPNAME "smsc95xx"
#define SMSC_DRIVER_VERSION "1.0.6"
#define SMSC_DRIVER_VERSION "2.0.0"
#define HS_USB_PKT_SIZE (512)
#define FS_USB_PKT_SIZE (64)
#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
@ -49,10 +51,7 @@
#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
#define CARRIER_CHECK_DELAY (2 * HZ)
struct smsc95xx_priv {
u32 chip_id;
u32 mac_cr;
u32 hash_hi;
u32 hash_lo;
@ -60,10 +59,8 @@ struct smsc95xx_priv {
spinlock_t mac_cr_lock;
u8 features;
u8 suspend_flags;
u8 mdix_ctrl;
bool link_ok;
struct delayed_work carrier_check;
struct usbnet *dev;
struct mii_bus *mdiobus;
struct phy_device *phydev;
};
static bool turbo_mode = true;
@ -173,10 +170,14 @@ static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
return -EIO;
}
static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
static u32 mii_address_cmd(int phy_id, int idx, u16 op)
{
return (phy_id & 0x1f) << 11 | (idx & 0x1f) << 6 | op;
}
static int __smsc95xx_mdio_read(struct usbnet *dev, int phy_id, int idx,
int in_pm)
{
struct usbnet *dev = netdev_priv(netdev);
u32 val, addr;
int ret;
@ -185,14 +186,12 @@ static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
/* confirm MII not busy */
ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
if (ret < 0) {
netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
netdev_warn(dev->net, "%s: MII is busy\n", __func__);
goto done;
}
/* set the address, index & direction (read from PHY) */
phy_id &= dev->mii.phy_id_mask;
idx &= dev->mii.reg_num_mask;
addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
addr = mii_address_cmd(phy_id, idx, MII_READ_ | MII_BUSY_);
ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
if (ret < 0) {
netdev_warn(dev->net, "Error writing MII_ADDR\n");
@ -218,10 +217,9 @@ done:
return ret;
}
static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
static void __smsc95xx_mdio_write(struct usbnet *dev, int phy_id,
int idx, int regval, int in_pm)
{
struct usbnet *dev = netdev_priv(netdev);
u32 val, addr;
int ret;
@ -230,7 +228,7 @@ static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
/* confirm MII not busy */
ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
if (ret < 0) {
netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
netdev_warn(dev->net, "%s: MII is busy\n", __func__);
goto done;
}
@ -242,9 +240,7 @@ static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
}
/* set the address, index & direction (write to PHY) */
phy_id &= dev->mii.phy_id_mask;
idx &= dev->mii.reg_num_mask;
addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
addr = mii_address_cmd(phy_id, idx, MII_WRITE_ | MII_BUSY_);
ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
if (ret < 0) {
netdev_warn(dev->net, "Error writing MII_ADDR\n");
@ -263,27 +259,32 @@ done:
static int smsc95xx_mdio_read_nopm(struct usbnet *dev, int idx)
{
struct mii_if_info *mii = &dev->mii;
struct smsc95xx_priv *pdata = dev->driver_priv;
return __smsc95xx_mdio_read(dev->net, mii->phy_id, idx, 1);
return __smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, idx, 1);
}
static void smsc95xx_mdio_write_nopm(struct usbnet *dev, int idx, int regval)
{
struct mii_if_info *mii = &dev->mii;
struct smsc95xx_priv *pdata = dev->driver_priv;
__smsc95xx_mdio_write(dev->net, mii->phy_id, idx, regval, 1);
__smsc95xx_mdio_write(dev, pdata->phydev->mdio.addr, idx, regval, 1);
}
static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
static int smsc95xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
{
return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
struct usbnet *dev = bus->priv;
return __smsc95xx_mdio_read(dev, phy_id, idx, 0);
}
static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
int regval)
static int smsc95xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
u16 regval)
{
__smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
struct usbnet *dev = bus->priv;
__smsc95xx_mdio_write(dev, phy_id, idx, regval, 0);
return 0;
}
static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
@ -513,22 +514,23 @@ static void smsc95xx_set_multicast(struct net_device *netdev)
netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
}
static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
u16 lcladv, u16 rmtadv)
static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev)
{
u32 flow = 0, afc_cfg;
struct smsc95xx_priv *pdata = dev->driver_priv;
bool tx_pause, rx_pause;
int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
if (ret < 0)
return ret;
if (duplex == DUPLEX_FULL) {
u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
if (pdata->phydev->duplex == DUPLEX_FULL) {
phy_get_pause(pdata->phydev, &tx_pause, &rx_pause);
if (cap & FLOW_CTRL_RX)
if (rx_pause)
flow = 0xFFFF0002;
if (cap & FLOW_CTRL_TX) {
if (tx_pause) {
afc_cfg |= 0xF;
flow |= 0xFFFF0000;
} else {
@ -536,8 +538,8 @@ static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
}
netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
cap & FLOW_CTRL_RX ? "enabled" : "disabled",
cap & FLOW_CTRL_TX ? "enabled" : "disabled");
rx_pause ? "enabled" : "disabled",
tx_pause ? "enabled" : "disabled");
} else {
netif_dbg(dev, link, dev->net, "half duplex\n");
afc_cfg |= 0xF;
@ -553,32 +555,15 @@ static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
static int smsc95xx_link_reset(struct usbnet *dev)
{
struct smsc95xx_priv *pdata = dev->driver_priv;
struct mii_if_info *mii = &dev->mii;
struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
unsigned long flags;
u16 lcladv, rmtadv;
int ret;
/* clear interrupt status */
ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
if (ret < 0)
return ret;
ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
if (ret < 0)
return ret;
mii_check_media(mii, 1, 1);
mii_ethtool_gset(&dev->mii, &ecmd);
lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
netif_dbg(dev, link, dev->net,
"speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
spin_lock_irqsave(&pdata->mac_cr_lock, flags);
if (ecmd.duplex != DUPLEX_FULL) {
if (pdata->phydev->duplex != DUPLEX_FULL) {
pdata->mac_cr &= ~MAC_CR_FDPX_;
pdata->mac_cr |= MAC_CR_RCVOWN_;
} else {
@ -591,7 +576,7 @@ static int smsc95xx_link_reset(struct usbnet *dev)
if (ret < 0)
return ret;
ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
ret = smsc95xx_phy_update_flowcontrol(dev);
if (ret < 0)
netdev_warn(dev->net, "Error updating PHY flow control\n");
@ -618,44 +603,6 @@ static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
intdata);
}
static void set_carrier(struct usbnet *dev, bool link)
{
struct smsc95xx_priv *pdata = dev->driver_priv;
if (pdata->link_ok == link)
return;
pdata->link_ok = link;
if (link)
usbnet_link_change(dev, 1, 0);
else
usbnet_link_change(dev, 0, 0);
}
static void check_carrier(struct work_struct *work)
{
struct smsc95xx_priv *pdata = container_of(work, struct smsc95xx_priv,
carrier_check.work);
struct usbnet *dev = pdata->dev;
int ret;
if (pdata->suspend_flags != 0)
return;
ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMSR);
if (ret < 0) {
netdev_warn(dev->net, "Failed to read MII_BMSR\n");
return;
}
if (ret & BMSR_LSTATUS)
set_carrier(dev, 1);
else
set_carrier(dev, 0);
schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
}
/* Enable or disable Tx & Rx checksum offload engines */
static int smsc95xx_set_features(struct net_device *netdev,
netdev_features_t features)
@ -774,108 +721,15 @@ static int smsc95xx_ethtool_set_wol(struct net_device *net,
return ret;
}
static int get_mdix_status(struct net_device *net)
static u32 smsc95xx_get_link(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
u32 val;
int buf;
buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, SPECIAL_CTRL_STS);
if (buf & SPECIAL_CTRL_STS_OVRRD_AMDIX_) {
if (buf & SPECIAL_CTRL_STS_AMDIX_ENABLE_)
return ETH_TP_MDI_AUTO;
else if (buf & SPECIAL_CTRL_STS_AMDIX_STATE_)
return ETH_TP_MDI_X;
} else {
buf = smsc95xx_read_reg(dev, STRAP_STATUS, &val);
if (val & STRAP_STATUS_AMDIX_EN_)
return ETH_TP_MDI_AUTO;
}
return ETH_TP_MDI;
}
static void set_mdix_status(struct net_device *net, __u8 mdix_ctrl)
{
struct usbnet *dev = netdev_priv(net);
struct smsc95xx_priv *pdata = dev->driver_priv;
int buf;
if ((pdata->chip_id == ID_REV_CHIP_ID_9500A_) ||
(pdata->chip_id == ID_REV_CHIP_ID_9530_) ||
(pdata->chip_id == ID_REV_CHIP_ID_89530_) ||
(pdata->chip_id == ID_REV_CHIP_ID_9730_)) {
/* Extend Manual AutoMDIX timer for 9500A/9500Ai */
buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
PHY_EDPD_CONFIG);
buf |= PHY_EDPD_CONFIG_EXT_CROSSOVER_;
smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
PHY_EDPD_CONFIG, buf);
}
if (mdix_ctrl == ETH_TP_MDI) {
buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS);
buf |= SPECIAL_CTRL_STS_OVRRD_AMDIX_;
buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
SPECIAL_CTRL_STS_AMDIX_STATE_);
smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS, buf);
} else if (mdix_ctrl == ETH_TP_MDI_X) {
buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS);
buf |= SPECIAL_CTRL_STS_OVRRD_AMDIX_;
buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
SPECIAL_CTRL_STS_AMDIX_STATE_);
buf |= SPECIAL_CTRL_STS_AMDIX_STATE_;
smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS, buf);
} else if (mdix_ctrl == ETH_TP_MDI_AUTO) {
buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS);
buf &= ~SPECIAL_CTRL_STS_OVRRD_AMDIX_;
buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
SPECIAL_CTRL_STS_AMDIX_STATE_);
buf |= SPECIAL_CTRL_STS_AMDIX_ENABLE_;
smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
SPECIAL_CTRL_STS, buf);
}
pdata->mdix_ctrl = mdix_ctrl;
}
static int smsc95xx_get_link_ksettings(struct net_device *net,
struct ethtool_link_ksettings *cmd)
{
struct usbnet *dev = netdev_priv(net);
struct smsc95xx_priv *pdata = dev->driver_priv;
int retval;
retval = usbnet_get_link_ksettings(net, cmd);
cmd->base.eth_tp_mdix = pdata->mdix_ctrl;
cmd->base.eth_tp_mdix_ctrl = pdata->mdix_ctrl;
return retval;
}
static int smsc95xx_set_link_ksettings(struct net_device *net,
const struct ethtool_link_ksettings *cmd)
{
struct usbnet *dev = netdev_priv(net);
struct smsc95xx_priv *pdata = dev->driver_priv;
int retval;
if (pdata->mdix_ctrl != cmd->base.eth_tp_mdix_ctrl)
set_mdix_status(net, cmd->base.eth_tp_mdix_ctrl);
retval = usbnet_set_link_ksettings(net, cmd);
return retval;
phy_read_status(net->phydev);
return net->phydev->link;
}
static const struct ethtool_ops smsc95xx_ethtool_ops = {
.get_link = usbnet_get_link,
.nway_reset = usbnet_nway_reset,
.get_link = smsc95xx_get_link,
.nway_reset = phy_ethtool_nway_reset,
.get_drvinfo = usbnet_get_drvinfo,
.get_msglevel = usbnet_get_msglevel,
.set_msglevel = usbnet_set_msglevel,
@ -886,19 +740,17 @@ static const struct ethtool_ops smsc95xx_ethtool_ops = {
.get_regs = smsc95xx_ethtool_getregs,
.get_wol = smsc95xx_ethtool_get_wol,
.set_wol = smsc95xx_ethtool_set_wol,
.get_link_ksettings = smsc95xx_get_link_ksettings,
.set_link_ksettings = smsc95xx_set_link_ksettings,
.get_link_ksettings = phy_ethtool_get_link_ksettings,
.set_link_ksettings = phy_ethtool_set_link_ksettings,
.get_ts_info = ethtool_op_get_ts_info,
};
static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
{
struct usbnet *dev = netdev_priv(netdev);
if (!netif_running(netdev))
return -EINVAL;
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
return phy_mii_ioctl(netdev->phydev, rq, cmd);
}
static void smsc95xx_init_mac_address(struct usbnet *dev)
@ -974,51 +826,6 @@ static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
}
static int smsc95xx_phy_initialize(struct usbnet *dev)
{
int bmcr, ret, timeout = 0;
/* Initialize MII structure */
dev->mii.dev = dev->net;
dev->mii.mdio_read = smsc95xx_mdio_read;
dev->mii.mdio_write = smsc95xx_mdio_write;
dev->mii.phy_id_mask = 0x1f;
dev->mii.reg_num_mask = 0x1f;
dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
/* reset phy and wait for reset to complete */
smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
do {
msleep(10);
bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
timeout++;
} while ((bmcr & BMCR_RESET) && (timeout < 100));
if (timeout >= 100) {
netdev_warn(dev->net, "timeout on PHY Reset");
return -EIO;
}
smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
ADVERTISE_PAUSE_ASYM);
/* read to clear */
ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
if (ret < 0) {
netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
return ret;
}
smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
PHY_INT_MASK_DEFAULT_);
mii_nway_restart(&dev->mii);
netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
return 0;
}
static int smsc95xx_reset(struct usbnet *dev)
{
struct smsc95xx_priv *pdata = dev->driver_priv;
@ -1200,12 +1007,6 @@ static int smsc95xx_reset(struct usbnet *dev)
smsc95xx_set_multicast(dev->net);
ret = smsc95xx_phy_initialize(dev);
if (ret < 0) {
netdev_warn(dev->net, "Failed to init PHY\n");
return ret;
}
ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
if (ret < 0)
return ret;
@ -1250,6 +1051,7 @@ static const struct net_device_ops smsc95xx_netdev_ops = {
static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc95xx_priv *pdata;
bool is_internal_phy;
u32 val;
int ret;
@ -1291,15 +1093,50 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
if (ret)
goto free_pdata;
pdata->mdiobus = mdiobus_alloc();
if (!pdata->mdiobus) {
ret = -ENOMEM;
goto free_pdata;
}
ret = smsc95xx_read_reg(dev, HW_CFG, &val);
if (ret < 0)
goto free_mdio;
is_internal_phy = !(val & HW_CFG_PSEL_);
if (is_internal_phy)
pdata->mdiobus->phy_mask = ~(1u << SMSC95XX_INTERNAL_PHY_ID);
pdata->mdiobus->priv = dev;
pdata->mdiobus->read = smsc95xx_mdiobus_read;
pdata->mdiobus->write = smsc95xx_mdiobus_write;
pdata->mdiobus->name = "smsc95xx-mdiobus";
pdata->mdiobus->parent = &dev->udev->dev;
snprintf(pdata->mdiobus->id, ARRAY_SIZE(pdata->mdiobus->id),
"usb-%03d:%03d", dev->udev->bus->busnum, dev->udev->devnum);
ret = mdiobus_register(pdata->mdiobus);
if (ret) {
netdev_err(dev->net, "Could not register MDIO bus\n");
goto free_mdio;
}
pdata->phydev = phy_find_first(pdata->mdiobus);
if (!pdata->phydev) {
netdev_err(dev->net, "no PHY found\n");
ret = -ENODEV;
goto unregister_mdio;
}
pdata->phydev->is_internal = is_internal_phy;
/* detect device revision as different features may be available */
ret = smsc95xx_read_reg(dev, ID_REV, &val);
if (ret < 0)
goto free_pdata;
goto unregister_mdio;
val >>= 16;
pdata->chip_id = val;
pdata->mdix_ctrl = get_mdix_status(dev->net);
if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
(val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
pdata->features = (FEATURE_8_WAKEUP_FILTERS |
@ -1315,13 +1152,14 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
dev->net->min_mtu = ETH_MIN_MTU;
dev->net->max_mtu = ETH_DATA_LEN;
dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
pdata->dev = dev;
INIT_DELAYED_WORK(&pdata->carrier_check, check_carrier);
schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
return 0;
unregister_mdio:
mdiobus_unregister(pdata->mdiobus);
free_mdio:
mdiobus_free(pdata->mdiobus);
free_pdata:
kfree(pdata);
return ret;
@ -1331,11 +1169,47 @@ static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc95xx_priv *pdata = dev->driver_priv;
cancel_delayed_work_sync(&pdata->carrier_check);
mdiobus_unregister(pdata->mdiobus);
mdiobus_free(pdata->mdiobus);
netif_dbg(dev, ifdown, dev->net, "free pdata\n");
kfree(pdata);
}
static void smsc95xx_handle_link_change(struct net_device *net)
{
phy_print_status(net->phydev);
}
static int smsc95xx_start_phy(struct usbnet *dev)
{
struct smsc95xx_priv *pdata = dev->driver_priv;
struct net_device *net = dev->net;
int ret;
ret = smsc95xx_reset(dev);
if (ret < 0)
return ret;
ret = phy_connect_direct(net, pdata->phydev,
&smsc95xx_handle_link_change,
PHY_INTERFACE_MODE_MII);
if (ret) {
netdev_err(net, "can't attach PHY to %s\n", pdata->mdiobus->id);
return ret;
}
phy_attached_info(net->phydev);
phy_start(net->phydev);
return 0;
}
static int smsc95xx_disconnect_phy(struct usbnet *dev)
{
phy_stop(dev->net->phydev);
phy_disconnect(dev->net->phydev);
return 0;
}
static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
{
u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
@ -1588,8 +1462,6 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
return ret;
}
cancel_delayed_work_sync(&pdata->carrier_check);
if (pdata->suspend_flags) {
netdev_warn(dev->net, "error during last resume\n");
pdata->suspend_flags = 0;
@ -1833,10 +1705,6 @@ done:
if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
if (ret)
schedule_delayed_work(&pdata->carrier_check,
CARRIER_CHECK_DELAY);
return ret;
}
@ -1856,7 +1724,6 @@ static int smsc95xx_resume(struct usb_interface *intf)
/* do this first to ensure it's cleared even in error case */
pdata->suspend_flags = 0;
schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
if (suspend_flags & SUSPEND_ALLMODES) {
/* clear wake-up sources */
@ -1887,6 +1754,7 @@ static int smsc95xx_resume(struct usb_interface *intf)
if (ret < 0)
netdev_warn(dev->net, "usbnet_resume error\n");
phy_init_hw(pdata->phydev);
return ret;
}
@ -2092,7 +1960,8 @@ static const struct driver_info smsc95xx_info = {
.bind = smsc95xx_bind,
.unbind = smsc95xx_unbind,
.link_reset = smsc95xx_link_reset,
.reset = smsc95xx_reset,
.reset = smsc95xx_start_phy,
.stop = smsc95xx_disconnect_phy,
.rx_fixup = smsc95xx_rx_fixup,
.tx_fixup = smsc95xx_tx_fixup,
.status = smsc95xx_status,