| /* |
| * Generic PHY Management code |
| * Based loosely off of Linux's PHY Lib |
| * |
| * Copyright 2011 Freescale Semiconductor, Inc. |
| * author Andy Fleming |
| * Copyright 2020, HENSOLDT Cyber GmbH |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include "common.h" |
| #include "fec_mxc.h" |
| #include "miiphy.h" |
| #include "phy.h" |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| /* Generic PHY support and helper functions */ |
| |
| /** |
| * genphy_config_advert - sanitize and advertise auto-negotation parameters |
| * @phydev: target phy_device struct |
| * |
| * Description: Writes MII_ADVERTISE with the appropriate values, |
| * after sanitizing the values to make sure we only advertise |
| * what is supported. Returns < 0 on error, 0 if the PHY's advertisement |
| * hasn't changed, and > 0 if it has changed. |
| */ |
| static int genphy_config_advert(struct phy_device *phydev) |
| { |
| u32 advertise; |
| int oldadv, adv; |
| int err, changed = 0; |
| |
| /* Only allow advertising what |
| * this PHY supports */ |
| phydev->advertising &= phydev->supported; |
| advertise = phydev->advertising; |
| |
| /* Setup standard advertisement */ |
| oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); |
| |
| if (adv < 0) { |
| return adv; |
| } |
| |
| adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | |
| ADVERTISE_PAUSE_ASYM); |
| if (advertise & ADVERTISED_10baseT_Half) { |
| adv |= ADVERTISE_10HALF; |
| } |
| if (advertise & ADVERTISED_10baseT_Full) { |
| adv |= ADVERTISE_10FULL; |
| } |
| if (advertise & ADVERTISED_100baseT_Half) { |
| adv |= ADVERTISE_100HALF; |
| } |
| if (advertise & ADVERTISED_100baseT_Full) { |
| adv |= ADVERTISE_100FULL; |
| } |
| if (advertise & ADVERTISED_Pause) { |
| adv |= ADVERTISE_PAUSE_CAP; |
| } |
| if (advertise & ADVERTISED_Asym_Pause) { |
| adv |= ADVERTISE_PAUSE_ASYM; |
| } |
| |
| if (adv != oldadv) { |
| err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv); |
| |
| if (err < 0) { |
| return err; |
| } |
| changed = 1; |
| } |
| |
| /* Configure gigabit if it's supported */ |
| if (phydev->supported & (SUPPORTED_1000baseT_Half | |
| SUPPORTED_1000baseT_Full)) { |
| oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000); |
| |
| if (adv < 0) { |
| return adv; |
| } |
| |
| adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); |
| if (advertise & SUPPORTED_1000baseT_Half) { |
| adv |= ADVERTISE_1000HALF; |
| } |
| if (advertise & SUPPORTED_1000baseT_Full) { |
| adv |= ADVERTISE_1000FULL; |
| } |
| |
| if (adv != oldadv) { |
| err = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, |
| adv); |
| |
| if (err < 0) { |
| return err; |
| } |
| changed = 1; |
| } |
| } |
| |
| return changed; |
| } |
| |
| /** |
| * genphy_setup_forced - configures/forces speed/duplex from @phydev |
| * @phydev: target phy_device struct |
| * |
| * Description: Configures MII_BMCR to force speed/duplex |
| * to the values in phydev. Assumes that the values are valid. |
| */ |
| static int genphy_setup_forced(struct phy_device *phydev) |
| { |
| int err; |
| int ctl = 0; |
| |
| phydev->pause = phydev->asym_pause = 0; |
| |
| if (SPEED_1000 == phydev->speed) { |
| ctl |= BMCR_SPEED1000; |
| } else if (SPEED_100 == phydev->speed) { |
| ctl |= BMCR_SPEED100; |
| } |
| |
| if (DUPLEX_FULL == phydev->duplex) { |
| ctl |= BMCR_FULLDPLX; |
| } |
| |
| err = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); |
| |
| return err; |
| } |
| |
| /** |
| * genphy_restart_aneg - Enable and Restart Autonegotiation |
| * @phydev: target phy_device struct |
| */ |
| int genphy_restart_aneg(struct phy_device *phydev) |
| { |
| int ctl; |
| |
| ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); |
| |
| if (ctl < 0) { |
| return ctl; |
| } |
| |
| ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); |
| |
| /* Don't isolate the PHY if we're negotiating */ |
| ctl &= ~(BMCR_ISOLATE); |
| |
| ctl = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); |
| |
| return ctl; |
| } |
| |
| /** |
| * genphy_config_aneg - restart auto-negotiation or write BMCR |
| * @phydev: target phy_device struct |
| * |
| * Description: If auto-negotiation is enabled, we configure the |
| * advertising, and then restart auto-negotiation. If it is not |
| * enabled, then we write the BMCR. |
| */ |
| int genphy_config_aneg(struct phy_device *phydev) |
| { |
| int result; |
| |
| if (AUTONEG_ENABLE != phydev->autoneg) { |
| return genphy_setup_forced(phydev); |
| } |
| |
| result = genphy_config_advert(phydev); |
| |
| if (result < 0) { /* error */ |
| return result; |
| } |
| |
| if (result == 0) { |
| /* Advertisment hasn't changed, but maybe aneg was never on to |
| * begin with? Or maybe phy was isolated? */ |
| int ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); |
| |
| if (ctl < 0) { |
| return ctl; |
| } |
| |
| if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) { |
| result = 1; /* do restart aneg */ |
| } |
| } |
| |
| /* Only restart aneg if we are advertising something different |
| * than we were before. */ |
| if (result > 0) { |
| result = genphy_restart_aneg(phydev); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * genphy_update_link - update link status in @phydev |
| * @phydev: target phy_device struct |
| * |
| * Description: Update the value in phydev->link to reflect the |
| * current link value. In order to do this, we need to read |
| * the status register twice, keeping the second value. |
| */ |
| int genphy_update_link(struct phy_device *phydev) |
| { |
| unsigned int mii_reg; |
| |
| /* |
| * Wait if the link is up, and autonegotiation is in progress |
| * (ie - we're capable and it's not done) |
| */ |
| mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); |
| |
| /* |
| * If we already saw the link up, and it hasn't gone down, then |
| * we don't need to wait for autoneg again |
| */ |
| if (phydev->link && mii_reg & BMSR_LSTATUS) { |
| ZF_LOGI("link already established"); |
| return 0; |
| } |
| |
| if ((mii_reg & BMSR_ANEGCAPABLE) && !(mii_reg & BMSR_ANEGCOMPLETE)) { |
| int i = 0; |
| |
| ZF_LOGI( |
| "waiting for auto negotiation to complete on phy %d, '%s'", |
| phydev->addr, phydev->dev->name); |
| fflush(stdout); |
| while (!(mii_reg & BMSR_ANEGCOMPLETE)) { |
| /* |
| * Timeout reached ? |
| */ |
| if (i > PHY_ANEG_TIMEOUT) { |
| ZF_LOGE("auto negotiation timeout"); |
| phydev->link = 0; |
| return 0; |
| } |
| |
| if ((i++ % 500) == 0) { |
| printf("."); |
| fflush(stdout); |
| } |
| |
| udelay(1000); /* 1 ms */ |
| mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); |
| } |
| ZF_LOGI("auto negotiation complete on phy %d, '%s'", |
| phydev->addr, phydev->dev->name); |
| phydev->link = 1; |
| } else { |
| /* Read the link a second time to clear the latched state */ |
| mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); |
| |
| if (mii_reg & BMSR_LSTATUS) { |
| phydev->link = 1; |
| } else { |
| phydev->link = 0; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Generic function which updates the speed and duplex. If |
| * autonegotiation is enabled, it uses the AND of the link |
| * partner's advertised capabilities and our advertised |
| * capabilities. If autonegotiation is disabled, we use the |
| * appropriate bits in the control register. |
| * |
| * Stolen from Linux's mii.c and phy_device.c |
| */ |
| static int genphy_parse_link(struct phy_device *phydev) |
| { |
| int mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); |
| |
| /* We're using autonegotiation */ |
| if (mii_reg & BMSR_ANEGCAPABLE) { |
| u32 lpa = 0; |
| u32 gblpa = 0; |
| |
| /* Check for gigabit capability */ |
| if (mii_reg & BMSR_ERCAP) { |
| /* We want a list of states supported by |
| * both PHYs in the link |
| */ |
| gblpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_STAT1000); |
| gblpa &= phy_read(phydev, |
| MDIO_DEVAD_NONE, MII_CTRL1000) << 2; |
| } |
| |
| /* Set the baseline so we only have to set them |
| * if they're different |
| */ |
| phydev->speed = SPEED_10; |
| phydev->duplex = DUPLEX_HALF; |
| |
| /* Check the gigabit fields */ |
| if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) { |
| phydev->speed = SPEED_1000; |
| |
| if (gblpa & PHY_1000BTSR_1000FD) { |
| phydev->duplex = DUPLEX_FULL; |
| } |
| |
| /* We're done! */ |
| return 0; |
| } |
| |
| lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); |
| lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA); |
| |
| if (lpa & (LPA_100FULL | LPA_100HALF)) { |
| phydev->speed = SPEED_100; |
| |
| if (lpa & LPA_100FULL) { |
| phydev->duplex = DUPLEX_FULL; |
| } |
| |
| } else if (lpa & LPA_10FULL) { |
| phydev->duplex = DUPLEX_FULL; |
| } |
| } else { |
| u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); |
| |
| phydev->speed = SPEED_10; |
| phydev->duplex = DUPLEX_HALF; |
| |
| if (bmcr & BMCR_FULLDPLX) { |
| phydev->duplex = DUPLEX_FULL; |
| } |
| |
| if (bmcr & BMCR_SPEED1000) { |
| phydev->speed = SPEED_1000; |
| } else if (bmcr & BMCR_SPEED100) { |
| phydev->speed = SPEED_100; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int genphy_config(struct phy_device *phydev) |
| { |
| int val; |
| u32 features; |
| |
| /* For now, I'll claim that the generic driver supports |
| * all possible port types */ |
| features = (SUPPORTED_TP | SUPPORTED_MII |
| | SUPPORTED_AUI | SUPPORTED_FIBRE | |
| SUPPORTED_BNC); |
| |
| /* Do we support autonegotiation? */ |
| val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); |
| |
| if (val < 0) { |
| return val; |
| } |
| |
| if (val & BMSR_ANEGCAPABLE) { |
| features |= SUPPORTED_Autoneg; |
| } |
| |
| if (val & BMSR_100FULL) { |
| features |= SUPPORTED_100baseT_Full; |
| } |
| if (val & BMSR_100HALF) { |
| features |= SUPPORTED_100baseT_Half; |
| } |
| if (val & BMSR_10FULL) { |
| features |= SUPPORTED_10baseT_Full; |
| } |
| if (val & BMSR_10HALF) { |
| features |= SUPPORTED_10baseT_Half; |
| } |
| |
| if (val & BMSR_ESTATEN) { |
| val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS); |
| |
| if (val < 0) { |
| return val; |
| } |
| |
| if (val & ESTATUS_1000_TFULL) { |
| features |= SUPPORTED_1000baseT_Full; |
| } |
| if (val & ESTATUS_1000_THALF) { |
| features |= SUPPORTED_1000baseT_Half; |
| } |
| } |
| |
| phydev->supported = features; |
| phydev->advertising = features; |
| |
| genphy_config_aneg(phydev); |
| |
| return 0; |
| } |
| |
| int genphy_startup(struct phy_device *phydev) |
| { |
| genphy_update_link(phydev); |
| genphy_parse_link(phydev); |
| |
| return 0; |
| } |
| |
| int genphy_shutdown(struct phy_device *phydev) |
| { |
| return 0; |
| } |
| |
| static struct phy_driver genphy_driver = { |
| .uid = 0xffffffff, |
| .mask = 0xffffffff, |
| .name = "Generic PHY", |
| .features = 0, |
| .config = genphy_config, |
| .startup = genphy_startup, |
| .shutdown = genphy_shutdown, |
| }; |
| |
| struct list_head phy_drivers = { &phy_drivers, &phy_drivers }; |
| |
| int phy_register(struct phy_driver *drv) |
| { |
| drv->list.next = &drv->list; |
| drv->list.prev = &drv->list; |
| list_add_tail(&drv->list, &phy_drivers); |
| |
| return 0; |
| } |
| |
| static int phy_probe(struct phy_device *phydev) |
| { |
| int err = 0; |
| |
| phydev->advertising = phydev->supported = phydev->drv->features; |
| phydev->mmds = phydev->drv->mmds; |
| |
| if (phydev->drv->probe) { |
| err = phydev->drv->probe(phydev); |
| } |
| |
| return err; |
| } |
| |
| static struct phy_driver *generic_for_interface(phy_interface_t interface) |
| { |
| #ifdef CONFIG_PHYLIB_10G |
| if (is_10g_interface(interface)) { |
| return &gen10g_driver; |
| } |
| #endif |
| |
| return &genphy_driver; |
| } |
| |
| static struct phy_driver *get_phy_driver(struct phy_device *phydev, |
| phy_interface_t interface) |
| { |
| struct list_head *entry; |
| int phy_id = phydev->phy_id; |
| struct phy_driver *drv = NULL; |
| |
| list_for_each(entry, &phy_drivers) { |
| drv = list_entry(entry, struct phy_driver, list); |
| if ((drv->uid & drv->mask) == (phy_id & drv->mask)) { |
| return drv; |
| } |
| } |
| |
| /* If we made it here, there's no driver for this PHY */ |
| return generic_for_interface(interface); |
| } |
| |
| static struct phy_device *phy_device_create(struct mii_dev *bus, int addr, |
| int phy_id, |
| phy_interface_t interface) |
| { |
| struct phy_device *dev; |
| |
| /* We allocate the device, and initialize the |
| * default values */ |
| dev = malloc(sizeof(*dev)); |
| if (!dev) { |
| ZF_LOGE("Failed to allocate PHY device for '%s':%d", bus->name, addr); |
| return NULL; |
| } |
| |
| memset(dev, 0, sizeof(*dev)); |
| |
| dev->duplex = -1; |
| dev->link = 1; |
| dev->interface = interface; |
| |
| dev->autoneg = AUTONEG_ENABLE; |
| |
| dev->addr = addr; |
| dev->phy_id = phy_id; |
| dev->bus = bus; |
| |
| dev->drv = get_phy_driver(dev, interface); |
| |
| phy_probe(dev); |
| |
| bus->phymap[addr] = dev; |
| |
| return dev; |
| } |
| |
| /** |
| * get_phy_id - reads the specified addr for its ID. |
| * @bus: the target MII bus |
| * @addr: PHY address on the MII bus |
| * @phy_id: where to store the ID retrieved. |
| * |
| * Description: Reads the ID registers of the PHY at @addr on the |
| * @bus, stores it in @phy_id and returns zero on success. |
| */ |
| static int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) |
| { |
| int phy_reg; |
| |
| /* Grab the bits from PHYIR1, and put them |
| * in the upper half */ |
| phy_reg = bus->read(bus, addr, devad, MII_PHYSID1); |
| |
| if (phy_reg < 0) { |
| ZF_LOGE("read MII_PHYSID1 failed, code %d", phy_reg); |
| return -EIO; |
| } |
| |
| *phy_id = (phy_reg & 0xffff) << 16; |
| |
| /* Grab the bits from PHYIR2, and put them in the lower half */ |
| phy_reg = bus->read(bus, addr, devad, MII_PHYSID2); |
| |
| if (phy_reg < 0) { |
| ZF_LOGE("read MII_PHYSID2 failed, code %d", phy_reg); |
| return -EIO; |
| } |
| |
| *phy_id |= (phy_reg & 0xffff); |
| |
| return 0; |
| } |
| |
| static struct phy_device *create_phy_by_mask(struct mii_dev *bus, |
| unsigned phy_mask, int devad, phy_interface_t interface) |
| { |
| u32 phy_id = 0xffffffff; |
| while (phy_mask) { |
| int addr = ffs(phy_mask) - 1; |
| int r = get_phy_id(bus, addr, devad, &phy_id); |
| if (r < 0) { |
| ZF_LOGE("Failed to get PHY ID, code %d", r); |
| return NULL; |
| } |
| /* If the PHY ID is mostly f's, we didn't find anything */ |
| if ((phy_id & 0x1fffffff) != 0x1fffffff) { |
| return phy_device_create(bus, addr, phy_id, interface); |
| } |
| phy_mask &= ~(BIT(addr)); |
| } |
| ZF_LOGE("Failed to create PHY by mask"); |
| return NULL; |
| } |
| |
| static struct phy_device *search_for_existing_phy(struct mii_dev *bus, |
| unsigned phy_mask, phy_interface_t interface) |
| { |
| /* If we have one, return the existing device, with new interface */ |
| while (phy_mask) { |
| int addr = ffs(phy_mask) - 1; |
| if (bus->phymap[addr]) { |
| bus->phymap[addr]->interface = interface; |
| return bus->phymap[addr]; |
| } |
| phy_mask &= ~(BIT(addr)); |
| } |
| return NULL; |
| } |
| |
| static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus, |
| unsigned phy_mask, phy_interface_t interface) |
| { |
| struct phy_device *phydev = search_for_existing_phy(bus, phy_mask, interface); |
| if (phydev) { |
| return phydev; |
| } |
| /* Try Standard (ie Clause 22) access */ |
| /* Otherwise we have to try Clause 45 */ |
| for (unsigned int i = 0; i < 5; i++) { |
| phydev = create_phy_by_mask(bus, phy_mask, i ? i : MDIO_DEVAD_NONE, interface); |
| if (phydev) { |
| return phydev; |
| } |
| } |
| ZF_LOGE("PHY not found"); |
| return phy_device_create(bus, ffs(phy_mask) - 1, 0xffffffff, interface); |
| } |
| |
| /** |
| * get_phy_device - reads the specified PHY device and returns its @phy_device struct |
| * @bus: the target MII bus |
| * @addr: PHY address on the MII bus |
| * |
| * Description: Reads the ID registers of the PHY at @addr on the |
| * @bus, then allocates and returns the phy_device to represent it. |
| */ |
| static struct phy_device *get_phy_device(struct mii_dev *bus, int addr, |
| phy_interface_t interface) |
| { |
| return get_phy_device_by_mask(bus, BIT(addr), interface); |
| } |
| |
| int phy_reset(struct phy_device *phydev) |
| { |
| int reg; |
| int timeout = 500; |
| int devad = MDIO_DEVAD_NONE; |
| |
| #ifdef CONFIG_PHYLIB_10G |
| /* If it's 10G, we need to issue reset through one of the MMDs */ |
| if (is_10g_interface(phydev->interface)) { |
| if (!phydev->mmds) { |
| gen10g_discover_mmds(phydev); |
| } |
| |
| devad = ffs(phydev->mmds) - 1; |
| } |
| #endif |
| |
| reg = phy_read(phydev, devad, MII_BMCR); |
| if (reg < 0) { |
| ZF_LOGE("PHY status read failed"); |
| return -1; |
| } |
| |
| reg |= BMCR_RESET; |
| |
| if (phy_write(phydev, devad, MII_BMCR, reg) < 0) { |
| ZF_LOGE("PHY reset failed"); |
| return -1; |
| } |
| |
| #ifdef CONFIG_PHY_RESET_DELAY |
| udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */ |
| #endif |
| /* |
| * Poll the control register for the reset bit to go to 0 (it is |
| * auto-clearing). This should happen within 0.5 seconds per the |
| * IEEE spec. |
| */ |
| while ((reg & BMCR_RESET) && timeout--) { |
| reg = phy_read(phydev, devad, MII_BMCR); |
| |
| if (reg < 0) { |
| ZF_LOGE("PHY status read failed"); |
| return -1; |
| } |
| udelay(1000); |
| } |
| |
| if (reg & BMCR_RESET) { |
| ZF_LOGE("PHY reset timed out"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int miiphy_reset(const char *devname, unsigned char addr) |
| { |
| struct mii_dev *bus = miiphy_get_dev_by_name(devname); |
| struct phy_device *phydev; |
| |
| /* |
| * miiphy_reset was only used on standard PHYs, so we'll fake it here. |
| * If later code tries to connect with the right interface, this will |
| * be corrected by get_phy_device in phy_connect() |
| */ |
| phydev = get_phy_device(bus, addr, PHY_INTERFACE_MODE_MII); |
| |
| return phy_reset(phydev); |
| } |
| |
| struct phy_device *phy_connect_by_mask(struct mii_dev *bus, unsigned phy_mask, |
| struct eth_device *dev, phy_interface_t interface) |
| { |
| struct phy_device *phydev; |
| |
| /* Reset the bus */ |
| if (bus->reset) { |
| bus->reset(bus); |
| } |
| |
| /* Wait 15ms to make sure the PHY has come out of hard reset */ |
| udelay(15000); |
| |
| phydev = get_phy_device_by_mask(bus, phy_mask, interface); |
| |
| if (!phydev) { |
| ZF_LOGE("Could not get PHY for '%s' phy mask 0x%x", |
| bus->name, phy_mask); |
| return NULL; |
| } |
| |
| /* Soft Reset the PHY */ |
| phy_reset(phydev); |
| |
| if (phydev->dev) { |
| ZF_LOGI("%s:%d is connected to %s. Reconnecting to %s", |
| bus->name, phydev->addr, phydev->dev->name, dev->name); |
| } |
| phydev->dev = dev; |
| |
| ZF_LOGI("Connected PHY '%s' at address %d to '%s'", |
| phydev->drv->name, phydev->addr, phydev->dev->name); |
| |
| return phydev; |
| } |
| |
| /* |
| * Start the PHY. Returns 0 on success, or a negative error code. |
| */ |
| struct phy_device *phy_connect(struct mii_dev *bus, int addr, |
| struct eth_device *dev, phy_interface_t interface) |
| { |
| return phy_connect_by_mask(bus, BIT(addr), dev, interface); |
| } |
| |
| int phy_shutdown(struct phy_device *phydev) |
| { |
| if (phydev->drv->shutdown) { |
| phydev->drv->shutdown(phydev); |
| } |
| |
| return 0; |
| } |
