| /* |
| * Driver for ICPlus PHYs |
| * |
| * Copyright (c) 2007 Freescale Semiconductor, 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. |
| * |
| */ |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/errno.h> |
| #include <linux/unistd.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/spinlock.h> |
| #include <linux/mm.h> |
| #include <linux/module.h> |
| #include <linux/mii.h> |
| #include <linux/ethtool.h> |
| #include <linux/phy.h> |
| |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/uaccess.h> |
| |
| MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IP101G/IC1001 PHY drivers"); |
| MODULE_AUTHOR("Michael Barkowski"); |
| MODULE_LICENSE("GPL"); |
| |
| /* IP101A/G - IP1001 */ |
| #define IP10XX_SPEC_CTRL_STATUS 16 /* Spec. Control Register */ |
| #define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */ |
| #define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */ |
| #define IP1001_APS_ON 11 /* IP1001 APS Mode bit */ |
| #define IP101A_G_APS_ON 2 /* IP101A/G APS Mode bit */ |
| |
| static int ip175c_config_init(struct phy_device *phydev) |
| { |
| int err, i; |
| static int full_reset_performed = 0; |
| |
| if (full_reset_performed == 0) { |
| |
| /* master reset */ |
| err = mdiobus_write(phydev->bus, 30, 0, 0x175c); |
| if (err < 0) |
| return err; |
| |
| /* ensure no bus delays overlap reset period */ |
| err = mdiobus_read(phydev->bus, 30, 0); |
| |
| /* data sheet specifies reset period is 2 msec */ |
| mdelay(2); |
| |
| /* enable IP175C mode */ |
| err = mdiobus_write(phydev->bus, 29, 31, 0x175c); |
| if (err < 0) |
| return err; |
| |
| /* Set MII0 speed and duplex (in PHY mode) */ |
| err = mdiobus_write(phydev->bus, 29, 22, 0x420); |
| if (err < 0) |
| return err; |
| |
| /* reset switch ports */ |
| for (i = 0; i < 5; i++) { |
| err = mdiobus_write(phydev->bus, i, |
| MII_BMCR, BMCR_RESET); |
| if (err < 0) |
| return err; |
| } |
| |
| for (i = 0; i < 5; i++) |
| err = mdiobus_read(phydev->bus, i, MII_BMCR); |
| |
| mdelay(2); |
| |
| full_reset_performed = 1; |
| } |
| |
| if (phydev->addr != 4) { |
| phydev->state = PHY_RUNNING; |
| phydev->speed = SPEED_100; |
| phydev->duplex = DUPLEX_FULL; |
| phydev->link = 1; |
| netif_carrier_on(phydev->attached_dev); |
| } |
| |
| return 0; |
| } |
| |
| static int ip1xx_reset(struct phy_device *phydev) |
| { |
| int bmcr; |
| |
| /* Software Reset PHY */ |
| bmcr = phy_read(phydev, MII_BMCR); |
| if (bmcr < 0) |
| return bmcr; |
| bmcr |= BMCR_RESET; |
| bmcr = phy_write(phydev, MII_BMCR, bmcr); |
| if (bmcr < 0) |
| return bmcr; |
| |
| do { |
| bmcr = phy_read(phydev, MII_BMCR); |
| if (bmcr < 0) |
| return bmcr; |
| } while (bmcr & BMCR_RESET); |
| |
| return 0; |
| } |
| |
| static int ip1001_config_init(struct phy_device *phydev) |
| { |
| int c; |
| |
| c = ip1xx_reset(phydev); |
| if (c < 0) |
| return c; |
| |
| /* Enable Auto Power Saving mode */ |
| c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2); |
| if (c < 0) |
| return c; |
| c |= IP1001_APS_ON; |
| c = phy_write(phydev, IP1001_SPEC_CTRL_STATUS_2, c); |
| if (c < 0) |
| return c; |
| |
| if (phydev->interface == PHY_INTERFACE_MODE_RGMII) { |
| /* Additional delay (2ns) used to adjust RX clock phase |
| * at RGMII interface */ |
| c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); |
| if (c < 0) |
| return c; |
| |
| c |= IP1001_PHASE_SEL_MASK; |
| c = phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c); |
| if (c < 0) |
| return c; |
| } |
| |
| return 0; |
| } |
| |
| static int ip101a_g_config_init(struct phy_device *phydev) |
| { |
| int c; |
| |
| c = ip1xx_reset(phydev); |
| if (c < 0) |
| return c; |
| |
| /* Enable Auto Power Saving mode */ |
| c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); |
| c |= IP101A_G_APS_ON; |
| |
| return phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c); |
| } |
| |
| static int ip175c_read_status(struct phy_device *phydev) |
| { |
| if (phydev->addr == 4) /* WAN port */ |
| genphy_read_status(phydev); |
| else |
| /* Don't need to read status for switch ports */ |
| phydev->irq = PHY_IGNORE_INTERRUPT; |
| |
| return 0; |
| } |
| |
| static int ip175c_config_aneg(struct phy_device *phydev) |
| { |
| if (phydev->addr == 4) /* WAN port */ |
| genphy_config_aneg(phydev); |
| |
| return 0; |
| } |
| |
| static struct phy_driver ip175c_driver = { |
| .phy_id = 0x02430d80, |
| .name = "ICPlus IP175C", |
| .phy_id_mask = 0x0ffffff0, |
| .features = PHY_BASIC_FEATURES, |
| .config_init = &ip175c_config_init, |
| .config_aneg = &ip175c_config_aneg, |
| .read_status = &ip175c_read_status, |
| .suspend = genphy_suspend, |
| .resume = genphy_resume, |
| .driver = { .owner = THIS_MODULE,}, |
| }; |
| |
| static struct phy_driver ip1001_driver = { |
| .phy_id = 0x02430d90, |
| .name = "ICPlus IP1001", |
| .phy_id_mask = 0x0ffffff0, |
| .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | |
| SUPPORTED_Asym_Pause, |
| .flags = PHY_HAS_INTERRUPT, |
| .config_init = &ip1001_config_init, |
| .config_aneg = &genphy_config_aneg, |
| .read_status = &genphy_read_status, |
| .suspend = genphy_suspend, |
| .resume = genphy_resume, |
| .driver = { .owner = THIS_MODULE,}, |
| }; |
| |
| static struct phy_driver ip101a_g_driver = { |
| .phy_id = 0x02430c54, |
| .name = "ICPlus IP101A/G", |
| .phy_id_mask = 0x0ffffff0, |
| .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | |
| SUPPORTED_Asym_Pause, |
| .flags = PHY_HAS_INTERRUPT, |
| .config_init = &ip101a_g_config_init, |
| .config_aneg = &genphy_config_aneg, |
| .read_status = &genphy_read_status, |
| .suspend = genphy_suspend, |
| .resume = genphy_resume, |
| .driver = { .owner = THIS_MODULE,}, |
| }; |
| |
| static int __init icplus_init(void) |
| { |
| int ret = 0; |
| |
| ret = phy_driver_register(&ip1001_driver); |
| if (ret < 0) |
| return -ENODEV; |
| |
| ret = phy_driver_register(&ip101a_g_driver); |
| if (ret < 0) |
| return -ENODEV; |
| |
| return phy_driver_register(&ip175c_driver); |
| } |
| |
| static void __exit icplus_exit(void) |
| { |
| phy_driver_unregister(&ip1001_driver); |
| phy_driver_unregister(&ip101a_g_driver); |
| phy_driver_unregister(&ip175c_driver); |
| } |
| |
| module_init(icplus_init); |
| module_exit(icplus_exit); |
| |
| static struct mdio_device_id __maybe_unused icplus_tbl[] = { |
| { 0x02430d80, 0x0ffffff0 }, |
| { 0x02430d90, 0x0ffffff0 }, |
| { 0x02430c54, 0x0ffffff0 }, |
| { } |
| }; |
| |
| MODULE_DEVICE_TABLE(mdio, icplus_tbl); |