f95be1806f
This patch adds the STMicroelectronics ste10xp PHY device driver. It supports both the ste100p and the ste101p devices. Suspend/resume alredy added. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*
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* drivers/net/phy/ste10Xp.c
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*
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* Driver for STMicroelectronics STe10Xp PHYs
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*
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* Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*
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* Copyright (c) 2008 STMicroelectronics Limited
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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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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/moduleparam.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#define MII_XCIIS 0x11 /* Configuration Info IRQ & Status Reg */
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#define MII_XIE 0x12 /* Interrupt Enable Register */
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#define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */
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#define STE101P_PHY_ID 0x00061c50
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#define STE100P_PHY_ID 0x1c040011
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static int ste10Xp_config_init(struct phy_device *phydev)
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{
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int value, err;
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/* Software Reset PHY */
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value = phy_read(phydev, MII_BMCR);
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if (value < 0)
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return value;
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value |= BMCR_RESET;
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err = phy_write(phydev, MII_BMCR, value);
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if (err < 0)
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return err;
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do {
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value = phy_read(phydev, MII_BMCR);
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} while (value & BMCR_RESET);
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return 0;
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}
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static int ste10Xp_config_intr(struct phy_device *phydev)
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{
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int err, value;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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/* Enable all STe101P interrupts (PR12) */
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err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK);
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/* clear any pending interrupts */
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if (err == 0) {
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value = phy_read(phydev, MII_XCIIS);
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if (value < 0)
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err = value;
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}
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} else
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err = phy_write(phydev, MII_XIE, 0);
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return err;
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}
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static int ste10Xp_ack_interrupt(struct phy_device *phydev)
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{
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int err = phy_read(phydev, MII_XCIIS);
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if (err < 0)
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return err;
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return 0;
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}
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static struct phy_driver ste101p_pdriver = {
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.phy_id = STE101P_PHY_ID,
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.phy_id_mask = 0xfffffff0,
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.name = "STe101p",
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.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
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.flags = PHY_HAS_INTERRUPT,
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.config_init = ste10Xp_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 = ste10Xp_ack_interrupt,
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.config_intr = ste10Xp_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = {.owner = THIS_MODULE,}
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};
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static struct phy_driver ste100p_pdriver = {
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.phy_id = STE100P_PHY_ID,
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.phy_id_mask = 0xffffffff,
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.name = "STe100p",
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.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
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.flags = PHY_HAS_INTERRUPT,
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.config_init = ste10Xp_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 = ste10Xp_ack_interrupt,
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.config_intr = ste10Xp_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = {.owner = THIS_MODULE,}
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};
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static int __init ste10Xp_init(void)
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{
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int retval;
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retval = phy_driver_register(&ste100p_pdriver);
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if (retval < 0)
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return retval;
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return phy_driver_register(&ste101p_pdriver);
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}
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static void __exit ste10Xp_exit(void)
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{
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phy_driver_unregister(&ste100p_pdriver);
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phy_driver_unregister(&ste101p_pdriver);
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}
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module_init(ste10Xp_init);
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module_exit(ste10Xp_exit);
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MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver");
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MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
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MODULE_LICENSE("GPL");
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