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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>
275 lines
7.0 KiB
C
275 lines
7.0 KiB
C
/*
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* drivers/net/phy/smsc.c
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*
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* Driver for SMSC PHYs
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*
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* Author: Herbert Valerio Riedel
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*
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* Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
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*
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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/netdevice.h>
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#include <linux/smscphy.h>
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static int smsc_phy_config_intr(struct phy_device *phydev)
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{
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int rc = phy_write (phydev, MII_LAN83C185_IM,
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((PHY_INTERRUPT_ENABLED == phydev->interrupts)
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? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
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: 0));
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return rc < 0 ? rc : 0;
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}
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static int smsc_phy_ack_interrupt(struct phy_device *phydev)
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{
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int rc = phy_read (phydev, MII_LAN83C185_ISF);
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return rc < 0 ? rc : 0;
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}
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static int smsc_phy_config_init(struct phy_device *phydev)
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{
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int __maybe_unused len;
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struct device *dev __maybe_unused = &phydev->mdio.dev;
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struct device_node *of_node __maybe_unused = dev->of_node;
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int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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int enable_energy = 1;
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if (rc < 0)
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return rc;
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if (of_find_property(of_node, "smsc,disable-energy-detect", &len))
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enable_energy = 0;
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if (enable_energy) {
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/* Enable energy detect mode for this SMSC Transceivers */
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
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rc | MII_LAN83C185_EDPWRDOWN);
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if (rc < 0)
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return rc;
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}
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return smsc_phy_ack_interrupt(phydev);
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}
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static int smsc_phy_reset(struct phy_device *phydev)
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{
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int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
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if (rc < 0)
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return rc;
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/* If the SMSC PHY is in power down mode, then set it
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* in all capable mode before using it.
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*/
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if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) {
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int timeout = 50000;
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/* set "all capable" mode and reset the phy */
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rc |= MII_LAN83C185_MODE_ALL;
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phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc);
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phy_write(phydev, MII_BMCR, BMCR_RESET);
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/* wait end of reset (max 500 ms) */
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do {
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udelay(10);
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if (timeout-- == 0)
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return -1;
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rc = phy_read(phydev, MII_BMCR);
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} while (rc & BMCR_RESET);
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}
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return 0;
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}
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static int lan911x_config_init(struct phy_device *phydev)
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{
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return smsc_phy_ack_interrupt(phydev);
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}
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/*
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* The LAN87xx suffers from rare absence of the ENERGYON-bit when Ethernet cable
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* plugs in while LAN87xx is in Energy Detect Power-Down mode. This leads to
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* unstable detection of plugging in Ethernet cable.
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* This workaround disables Energy Detect Power-Down mode and waiting for
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* response on link pulses to detect presence of plugged Ethernet cable.
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* The Energy Detect Power-Down mode is enabled again in the end of procedure to
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* save approximately 220 mW of power if cable is unplugged.
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*/
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static int lan87xx_read_status(struct phy_device *phydev)
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{
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int err = genphy_read_status(phydev);
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int i;
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if (!phydev->link) {
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/* Disable EDPD to wake up PHY */
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int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
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rc & ~MII_LAN83C185_EDPWRDOWN);
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if (rc < 0)
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return rc;
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/* Wait max 640 ms to detect energy */
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for (i = 0; i < 64; i++) {
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/* Sleep to allow link test pulses to be sent */
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msleep(10);
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rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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if (rc & MII_LAN83C185_ENERGYON)
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break;
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}
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/* Re-enable EDPD */
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rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
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rc | MII_LAN83C185_EDPWRDOWN);
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if (rc < 0)
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return rc;
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}
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return err;
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}
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static struct phy_driver smsc_phy_driver[] = {
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{
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.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN83C185",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = smsc_phy_config_init,
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.soft_reset = smsc_phy_reset,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}, {
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.phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN8187",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = smsc_phy_config_init,
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.soft_reset = smsc_phy_reset,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}, {
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.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN8700",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = lan87xx_read_status,
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.config_init = smsc_phy_config_init,
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.soft_reset = smsc_phy_reset,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}, {
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.phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN911x Internal PHY",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = lan911x_config_init,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}, {
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.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN8710/LAN8720",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = lan87xx_read_status,
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.config_init = smsc_phy_config_init,
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.soft_reset = smsc_phy_reset,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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} };
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module_phy_driver(smsc_phy_driver);
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MODULE_DESCRIPTION("SMSC PHY driver");
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MODULE_AUTHOR("Herbert Valerio Riedel");
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MODULE_LICENSE("GPL");
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static struct mdio_device_id __maybe_unused smsc_tbl[] = {
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{ 0x0007c0a0, 0xfffffff0 },
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{ 0x0007c0b0, 0xfffffff0 },
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{ 0x0007c0c0, 0xfffffff0 },
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{ 0x0007c0d0, 0xfffffff0 },
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{ 0x0007c0f0, 0xfffffff0 },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, smsc_tbl);
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