mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
d606ef3fe0
Platform code can now set the MICREL_PHY_50MHZ_CLK bit of dev_flags in a fixup routine (registered with phy_register_fixup_for_uid()), to make the KZS8051RNL PHY work with 50MHz RMII reference clock. Cc: David J. Choi <david.choi@micrel.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
252 lines
6.6 KiB
C
252 lines
6.6 KiB
C
/*
|
|
* drivers/net/phy/micrel.c
|
|
*
|
|
* Driver for Micrel PHYs
|
|
*
|
|
* Author: David J. Choi
|
|
*
|
|
* Copyright (c) 2010 Micrel, Inc.
|
|
*
|
|
* 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 : ksz9021 1000/100/10 phy from Micrel
|
|
* ks8001, ks8737, ks8721, ks8041, ks8051 100/10 phy
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/micrel_phy.h>
|
|
|
|
/* general Interrupt control/status reg in vendor specific block. */
|
|
#define MII_KSZPHY_INTCS 0x1B
|
|
#define KSZPHY_INTCS_JABBER (1 << 15)
|
|
#define KSZPHY_INTCS_RECEIVE_ERR (1 << 14)
|
|
#define KSZPHY_INTCS_PAGE_RECEIVE (1 << 13)
|
|
#define KSZPHY_INTCS_PARELLEL (1 << 12)
|
|
#define KSZPHY_INTCS_LINK_PARTNER_ACK (1 << 11)
|
|
#define KSZPHY_INTCS_LINK_DOWN (1 << 10)
|
|
#define KSZPHY_INTCS_REMOTE_FAULT (1 << 9)
|
|
#define KSZPHY_INTCS_LINK_UP (1 << 8)
|
|
#define KSZPHY_INTCS_ALL (KSZPHY_INTCS_LINK_UP |\
|
|
KSZPHY_INTCS_LINK_DOWN)
|
|
|
|
/* general PHY control reg in vendor specific block. */
|
|
#define MII_KSZPHY_CTRL 0x1F
|
|
/* bitmap of PHY register to set interrupt mode */
|
|
#define KSZPHY_CTRL_INT_ACTIVE_HIGH (1 << 9)
|
|
#define KSZ9021_CTRL_INT_ACTIVE_HIGH (1 << 14)
|
|
#define KS8737_CTRL_INT_ACTIVE_HIGH (1 << 14)
|
|
#define KSZ8051_RMII_50MHZ_CLK (1 << 7)
|
|
|
|
static int kszphy_ack_interrupt(struct phy_device *phydev)
|
|
{
|
|
/* bit[7..0] int status, which is a read and clear register. */
|
|
int rc;
|
|
|
|
rc = phy_read(phydev, MII_KSZPHY_INTCS);
|
|
|
|
return (rc < 0) ? rc : 0;
|
|
}
|
|
|
|
static int kszphy_set_interrupt(struct phy_device *phydev)
|
|
{
|
|
int temp;
|
|
temp = (PHY_INTERRUPT_ENABLED == phydev->interrupts) ?
|
|
KSZPHY_INTCS_ALL : 0;
|
|
return phy_write(phydev, MII_KSZPHY_INTCS, temp);
|
|
}
|
|
|
|
static int kszphy_config_intr(struct phy_device *phydev)
|
|
{
|
|
int temp, rc;
|
|
|
|
/* set the interrupt pin active low */
|
|
temp = phy_read(phydev, MII_KSZPHY_CTRL);
|
|
temp &= ~KSZPHY_CTRL_INT_ACTIVE_HIGH;
|
|
phy_write(phydev, MII_KSZPHY_CTRL, temp);
|
|
rc = kszphy_set_interrupt(phydev);
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
static int ksz9021_config_intr(struct phy_device *phydev)
|
|
{
|
|
int temp, rc;
|
|
|
|
/* set the interrupt pin active low */
|
|
temp = phy_read(phydev, MII_KSZPHY_CTRL);
|
|
temp &= ~KSZ9021_CTRL_INT_ACTIVE_HIGH;
|
|
phy_write(phydev, MII_KSZPHY_CTRL, temp);
|
|
rc = kszphy_set_interrupt(phydev);
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
static int ks8737_config_intr(struct phy_device *phydev)
|
|
{
|
|
int temp, rc;
|
|
|
|
/* set the interrupt pin active low */
|
|
temp = phy_read(phydev, MII_KSZPHY_CTRL);
|
|
temp &= ~KS8737_CTRL_INT_ACTIVE_HIGH;
|
|
phy_write(phydev, MII_KSZPHY_CTRL, temp);
|
|
rc = kszphy_set_interrupt(phydev);
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
static int kszphy_config_init(struct phy_device *phydev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int ks8051_config_init(struct phy_device *phydev)
|
|
{
|
|
int regval;
|
|
|
|
if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) {
|
|
regval = phy_read(phydev, MII_KSZPHY_CTRL);
|
|
regval |= KSZ8051_RMII_50MHZ_CLK;
|
|
phy_write(phydev, MII_KSZPHY_CTRL, regval);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct phy_driver ks8737_driver = {
|
|
.phy_id = PHY_ID_KS8737,
|
|
.phy_id_mask = 0x00fffff0,
|
|
.name = "Micrel KS8737",
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
|
|
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
|
|
.config_init = kszphy_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = kszphy_ack_interrupt,
|
|
.config_intr = ks8737_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static struct phy_driver ks8041_driver = {
|
|
.phy_id = PHY_ID_KS8041,
|
|
.phy_id_mask = 0x00fffff0,
|
|
.name = "Micrel KS8041",
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
|
|
.config_init = kszphy_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = kszphy_ack_interrupt,
|
|
.config_intr = kszphy_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static struct phy_driver ks8051_driver = {
|
|
.phy_id = PHY_ID_KS8051,
|
|
.phy_id_mask = 0x00fffff0,
|
|
.name = "Micrel KS8051",
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
|
|
.config_init = ks8051_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = kszphy_ack_interrupt,
|
|
.config_intr = kszphy_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static struct phy_driver ks8001_driver = {
|
|
.phy_id = PHY_ID_KS8001,
|
|
.name = "Micrel KS8001 or KS8721",
|
|
.phy_id_mask = 0x00fffff0,
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
|
|
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
|
|
.config_init = kszphy_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = kszphy_ack_interrupt,
|
|
.config_intr = kszphy_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static struct phy_driver ksz9021_driver = {
|
|
.phy_id = PHY_ID_KSZ9021,
|
|
.phy_id_mask = 0x000fff10,
|
|
.name = "Micrel KSZ9021 Gigabit PHY",
|
|
.features = (PHY_GBIT_FEATURES | SUPPORTED_Pause
|
|
| SUPPORTED_Asym_Pause),
|
|
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
|
|
.config_init = kszphy_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = kszphy_ack_interrupt,
|
|
.config_intr = ksz9021_config_intr,
|
|
.driver = { .owner = THIS_MODULE, },
|
|
};
|
|
|
|
static int __init ksphy_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = phy_driver_register(&ks8001_driver);
|
|
if (ret)
|
|
goto err1;
|
|
|
|
ret = phy_driver_register(&ksz9021_driver);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = phy_driver_register(&ks8737_driver);
|
|
if (ret)
|
|
goto err3;
|
|
ret = phy_driver_register(&ks8041_driver);
|
|
if (ret)
|
|
goto err4;
|
|
ret = phy_driver_register(&ks8051_driver);
|
|
if (ret)
|
|
goto err5;
|
|
|
|
return 0;
|
|
|
|
err5:
|
|
phy_driver_unregister(&ks8041_driver);
|
|
err4:
|
|
phy_driver_unregister(&ks8737_driver);
|
|
err3:
|
|
phy_driver_unregister(&ksz9021_driver);
|
|
err2:
|
|
phy_driver_unregister(&ks8001_driver);
|
|
err1:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit ksphy_exit(void)
|
|
{
|
|
phy_driver_unregister(&ks8001_driver);
|
|
phy_driver_unregister(&ks8737_driver);
|
|
phy_driver_unregister(&ksz9021_driver);
|
|
phy_driver_unregister(&ks8041_driver);
|
|
phy_driver_unregister(&ks8051_driver);
|
|
}
|
|
|
|
module_init(ksphy_init);
|
|
module_exit(ksphy_exit);
|
|
|
|
MODULE_DESCRIPTION("Micrel PHY driver");
|
|
MODULE_AUTHOR("David J. Choi");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct mdio_device_id __maybe_unused micrel_tbl[] = {
|
|
{ PHY_ID_KSZ9021, 0x000fff10 },
|
|
{ PHY_ID_KS8001, 0x00fffff0 },
|
|
{ PHY_ID_KS8737, 0x00fffff0 },
|
|
{ PHY_ID_KS8041, 0x00fffff0 },
|
|
{ PHY_ID_KS8051, 0x00fffff0 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(mdio, micrel_tbl);
|