mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
812b5ca7d3
Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Signed-off-by: David S. Miller <davem@davemloft.net>
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*
|
|
* Driver for the Renesas PHY uPD60620.
|
|
*
|
|
* Copyright (C) 2015 Softing Industrial Automation GmbH
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/phy.h>
|
|
|
|
#define UPD60620_PHY_ID 0xb8242824
|
|
|
|
/* Extended Registers and values */
|
|
/* PHY Special Control/Status */
|
|
#define PHY_PHYSCR 0x1F /* PHY.31 */
|
|
#define PHY_PHYSCR_10MB 0x0004 /* PHY speed = 10mb */
|
|
#define PHY_PHYSCR_100MB 0x0008 /* PHY speed = 100mb */
|
|
#define PHY_PHYSCR_DUPLEX 0x0010 /* PHY Duplex */
|
|
|
|
/* PHY Special Modes */
|
|
#define PHY_SPM 0x12 /* PHY.18 */
|
|
|
|
/* Init PHY */
|
|
|
|
static int upd60620_config_init(struct phy_device *phydev)
|
|
{
|
|
/* Enable support for passive HUBs (could be a strap option) */
|
|
/* PHYMODE: All speeds, HD in parallel detect */
|
|
return phy_write(phydev, PHY_SPM, 0x0180 | phydev->mdio.addr);
|
|
}
|
|
|
|
/* Get PHY status from common registers */
|
|
|
|
static int upd60620_read_status(struct phy_device *phydev)
|
|
{
|
|
int phy_state;
|
|
|
|
/* Read negotiated state */
|
|
phy_state = phy_read(phydev, MII_BMSR);
|
|
if (phy_state < 0)
|
|
return phy_state;
|
|
|
|
phydev->link = 0;
|
|
phydev->lp_advertising = 0;
|
|
phydev->pause = 0;
|
|
phydev->asym_pause = 0;
|
|
|
|
if (phy_state & (BMSR_ANEGCOMPLETE | BMSR_LSTATUS)) {
|
|
phy_state = phy_read(phydev, PHY_PHYSCR);
|
|
if (phy_state < 0)
|
|
return phy_state;
|
|
|
|
if (phy_state & (PHY_PHYSCR_10MB | PHY_PHYSCR_100MB)) {
|
|
phydev->link = 1;
|
|
phydev->speed = SPEED_10;
|
|
phydev->duplex = DUPLEX_HALF;
|
|
|
|
if (phy_state & PHY_PHYSCR_100MB)
|
|
phydev->speed = SPEED_100;
|
|
if (phy_state & PHY_PHYSCR_DUPLEX)
|
|
phydev->duplex = DUPLEX_FULL;
|
|
|
|
phy_state = phy_read(phydev, MII_LPA);
|
|
if (phy_state < 0)
|
|
return phy_state;
|
|
|
|
phydev->lp_advertising
|
|
= mii_lpa_to_ethtool_lpa_t(phy_state);
|
|
|
|
if (phydev->duplex == DUPLEX_FULL) {
|
|
if (phy_state & LPA_PAUSE_CAP)
|
|
phydev->pause = 1;
|
|
if (phy_state & LPA_PAUSE_ASYM)
|
|
phydev->asym_pause = 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
MODULE_DESCRIPTION("Renesas uPD60620 PHY driver");
|
|
MODULE_AUTHOR("Bernd Edlinger <bernd.edlinger@hotmail.de>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct phy_driver upd60620_driver[1] = { {
|
|
.phy_id = UPD60620_PHY_ID,
|
|
.phy_id_mask = 0xfffffffe,
|
|
.name = "Renesas uPD60620",
|
|
.features = PHY_BASIC_FEATURES,
|
|
.flags = 0,
|
|
.config_init = upd60620_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = upd60620_read_status,
|
|
} };
|
|
|
|
module_phy_driver(upd60620_driver);
|
|
|
|
static struct mdio_device_id __maybe_unused upd60620_tbl[] = {
|
|
{ UPD60620_PHY_ID, 0xfffffffe },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(mdio, upd60620_tbl);
|