mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 14:36:41 +07:00
ff94c742df
drivers/net/phy/smsc.c:127:3-4: Unneeded semicolon Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci CC: Igor Plyatov <plyatov@gmail.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
276 lines
6.9 KiB
C
276 lines
6.9 KiB
C
/*
|
|
* drivers/net/phy/smsc.c
|
|
*
|
|
* Driver for SMSC PHYs
|
|
*
|
|
* Author: Herbert Valerio Riedel
|
|
*
|
|
* Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
|
|
*
|
|
* 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.
|
|
*
|
|
* Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/smscphy.h>
|
|
|
|
static int smsc_phy_config_intr(struct phy_device *phydev)
|
|
{
|
|
int rc = phy_write (phydev, MII_LAN83C185_IM,
|
|
((PHY_INTERRUPT_ENABLED == phydev->interrupts)
|
|
? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
|
|
: 0));
|
|
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
static int smsc_phy_ack_interrupt(struct phy_device *phydev)
|
|
{
|
|
int rc = phy_read (phydev, MII_LAN83C185_ISF);
|
|
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
static int smsc_phy_config_init(struct phy_device *phydev)
|
|
{
|
|
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
|
|
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Enable energy detect mode for this SMSC Transceivers */
|
|
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
|
|
rc | MII_LAN83C185_EDPWRDOWN);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return smsc_phy_ack_interrupt(phydev);
|
|
}
|
|
|
|
static int smsc_phy_reset(struct phy_device *phydev)
|
|
{
|
|
int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* If the SMSC PHY is in power down mode, then set it
|
|
* in all capable mode before using it.
|
|
*/
|
|
if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) {
|
|
int timeout = 50000;
|
|
|
|
/* set "all capable" mode and reset the phy */
|
|
rc |= MII_LAN83C185_MODE_ALL;
|
|
phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc);
|
|
phy_write(phydev, MII_BMCR, BMCR_RESET);
|
|
|
|
/* wait end of reset (max 500 ms) */
|
|
do {
|
|
udelay(10);
|
|
if (timeout-- == 0)
|
|
return -1;
|
|
rc = phy_read(phydev, MII_BMCR);
|
|
} while (rc & BMCR_RESET);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int lan911x_config_init(struct phy_device *phydev)
|
|
{
|
|
return smsc_phy_ack_interrupt(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
|
|
* unstable detection of plugging in Ethernet cable.
|
|
* This workaround disables Energy Detect Power-Down mode and waiting for
|
|
* response on link pulses to detect presence of plugged Ethernet cable.
|
|
* The Energy Detect Power-Down mode is enabled again in the end of procedure to
|
|
* save approximately 220 mW of power if cable is unplugged.
|
|
*/
|
|
static int lan87xx_read_status(struct phy_device *phydev)
|
|
{
|
|
int err = genphy_read_status(phydev);
|
|
int i;
|
|
|
|
if (!phydev->link) {
|
|
/* Disable EDPD to wake up PHY */
|
|
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
|
|
rc & ~MII_LAN83C185_EDPWRDOWN);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Wait max 640 ms to detect energy */
|
|
for (i = 0; i < 64; i++) {
|
|
/* Sleep to allow link test pulses to be sent */
|
|
msleep(10);
|
|
rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
|
|
if (rc < 0)
|
|
return rc;
|
|
if (rc & MII_LAN83C185_ENERGYON)
|
|
break;
|
|
}
|
|
|
|
/* Re-enable EDPD */
|
|
rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
|
|
rc | MII_LAN83C185_EDPWRDOWN);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct phy_driver smsc_phy_driver[] = {
|
|
{
|
|
.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "SMSC LAN83C185",
|
|
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
|
|
|
|
/* basic functions */
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.config_init = smsc_phy_config_init,
|
|
.soft_reset = smsc_phy_reset,
|
|
|
|
/* IRQ related */
|
|
.ack_interrupt = smsc_phy_ack_interrupt,
|
|
.config_intr = smsc_phy_config_intr,
|
|
|
|
.suspend = genphy_suspend,
|
|
.resume = genphy_resume,
|
|
|
|
.driver = { .owner = THIS_MODULE, }
|
|
}, {
|
|
.phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "SMSC LAN8187",
|
|
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
|
|
|
|
/* basic functions */
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.config_init = smsc_phy_config_init,
|
|
.soft_reset = smsc_phy_reset,
|
|
|
|
/* IRQ related */
|
|
.ack_interrupt = smsc_phy_ack_interrupt,
|
|
.config_intr = smsc_phy_config_intr,
|
|
|
|
.suspend = genphy_suspend,
|
|
.resume = genphy_resume,
|
|
|
|
.driver = { .owner = THIS_MODULE, }
|
|
}, {
|
|
.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "SMSC LAN8700",
|
|
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
|
|
|
|
/* basic functions */
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = lan87xx_read_status,
|
|
.config_init = smsc_phy_config_init,
|
|
.soft_reset = smsc_phy_reset,
|
|
|
|
/* IRQ related */
|
|
.ack_interrupt = smsc_phy_ack_interrupt,
|
|
.config_intr = smsc_phy_config_intr,
|
|
|
|
.suspend = genphy_suspend,
|
|
.resume = genphy_resume,
|
|
|
|
.driver = { .owner = THIS_MODULE, }
|
|
}, {
|
|
.phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "SMSC LAN911x Internal PHY",
|
|
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
|
|
|
|
/* basic functions */
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.config_init = lan911x_config_init,
|
|
|
|
/* IRQ related */
|
|
.ack_interrupt = smsc_phy_ack_interrupt,
|
|
.config_intr = smsc_phy_config_intr,
|
|
|
|
.suspend = genphy_suspend,
|
|
.resume = genphy_resume,
|
|
|
|
.driver = { .owner = THIS_MODULE, }
|
|
}, {
|
|
.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
|
|
.phy_id_mask = 0xfffffff0,
|
|
.name = "SMSC LAN8710/LAN8720",
|
|
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
|
|
|
|
/* basic functions */
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = lan87xx_read_status,
|
|
.config_init = smsc_phy_config_init,
|
|
.soft_reset = smsc_phy_reset,
|
|
|
|
/* IRQ related */
|
|
.ack_interrupt = smsc_phy_ack_interrupt,
|
|
.config_intr = smsc_phy_config_intr,
|
|
|
|
.suspend = genphy_suspend,
|
|
.resume = genphy_resume,
|
|
|
|
.driver = { .owner = THIS_MODULE, }
|
|
} };
|
|
|
|
module_phy_driver(smsc_phy_driver);
|
|
|
|
MODULE_DESCRIPTION("SMSC PHY driver");
|
|
MODULE_AUTHOR("Herbert Valerio Riedel");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct mdio_device_id __maybe_unused smsc_tbl[] = {
|
|
{ 0x0007c0a0, 0xfffffff0 },
|
|
{ 0x0007c0b0, 0xfffffff0 },
|
|
{ 0x0007c0c0, 0xfffffff0 },
|
|
{ 0x0007c0d0, 0xfffffff0 },
|
|
{ 0x0007c0f0, 0xfffffff0 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(mdio, smsc_tbl);
|