be01da72b1
Rather than have each driver set the driver owner field, do it once in the core code. This will also help with later changes, when the device structure will move. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* Copyright (C) 2015 Microchip Technology
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include <linux/microchipphy.h>
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#define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>"
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#define DRIVER_DESC "Microchip LAN88XX PHY driver"
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struct lan88xx_priv {
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int chip_id;
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int chip_rev;
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__u32 wolopts;
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};
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static int lan88xx_phy_config_intr(struct phy_device *phydev)
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{
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int rc;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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/* unmask all source and clear them before enable */
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rc = phy_write(phydev, LAN88XX_INT_MASK, 0x7FFF);
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rc = phy_read(phydev, LAN88XX_INT_STS);
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rc = phy_write(phydev, LAN88XX_INT_MASK,
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LAN88XX_INT_MASK_MDINTPIN_EN_ |
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LAN88XX_INT_MASK_LINK_CHANGE_);
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} else {
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rc = phy_write(phydev, LAN88XX_INT_MASK, 0);
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}
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return rc < 0 ? rc : 0;
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}
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static int lan88xx_phy_ack_interrupt(struct phy_device *phydev)
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{
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int rc = phy_read(phydev, LAN88XX_INT_STS);
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return rc < 0 ? rc : 0;
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}
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int lan88xx_suspend(struct phy_device *phydev)
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{
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struct lan88xx_priv *priv = phydev->priv;
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/* do not power down PHY when WOL is enabled */
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if (!priv->wolopts)
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genphy_suspend(phydev);
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return 0;
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}
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static int lan88xx_probe(struct phy_device *phydev)
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{
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struct device *dev = &phydev->mdio.dev;
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struct lan88xx_priv *priv;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->wolopts = 0;
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/* these values can be used to identify internal PHY */
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priv->chip_id = phy_read_mmd_indirect(phydev, LAN88XX_MMD3_CHIP_ID, 3);
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priv->chip_rev = phy_read_mmd_indirect(phydev, LAN88XX_MMD3_CHIP_REV,
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3);
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phydev->priv = priv;
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return 0;
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}
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static void lan88xx_remove(struct phy_device *phydev)
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{
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struct device *dev = &phydev->mdio.dev;
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struct lan88xx_priv *priv = phydev->priv;
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if (priv)
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devm_kfree(dev, priv);
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}
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static int lan88xx_set_wol(struct phy_device *phydev,
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struct ethtool_wolinfo *wol)
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{
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struct lan88xx_priv *priv = phydev->priv;
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priv->wolopts = wol->wolopts;
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return 0;
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}
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static struct phy_driver microchip_phy_driver[] = {
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{
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.phy_id = 0x0007c130,
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.phy_id_mask = 0xfffffff0,
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.name = "Microchip LAN88xx",
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.features = (PHY_GBIT_FEATURES |
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SUPPORTED_Pause | SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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.probe = lan88xx_probe,
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.remove = lan88xx_remove,
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.config_init = genphy_config_init,
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.ack_interrupt = lan88xx_phy_ack_interrupt,
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.config_intr = lan88xx_phy_config_intr,
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.suspend = lan88xx_suspend,
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.resume = genphy_resume,
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.set_wol = lan88xx_set_wol,
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} };
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module_phy_driver(microchip_phy_driver);
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static struct mdio_device_id __maybe_unused microchip_tbl[] = {
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{ 0x0007c130, 0xfffffff0 },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, microchip_tbl);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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