2 * Driver for ICPlus PHYs
4 * Copyright (c) 2007 Freescale Semiconductor, Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
12 #include <linux/kernel.h>
13 #include <linux/string.h>
14 #include <linux/errno.h>
15 #include <linux/unistd.h>
16 #include <linux/interrupt.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/netdevice.h>
20 #include <linux/etherdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/spinlock.h>
24 #include <linux/module.h>
25 #include <linux/mii.h>
26 #include <linux/ethtool.h>
27 #include <linux/phy.h>
31 #include <asm/uaccess.h>
33 MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IC1001 PHY drivers");
34 MODULE_AUTHOR("Michael Barkowski");
35 MODULE_LICENSE("GPL");
38 #define IP10XX_SPEC_CTRL_STATUS 16 /* Spec. Control Register */
39 #define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */
40 #define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */
41 #define IP1001_APS_ON 11 /* IP1001 APS Mode bit */
42 #define IP101A_APS_ON 2 /* IP101A APS Mode bit */
44 static int ip175c_config_init(struct phy_device *phydev)
47 static int full_reset_performed = 0;
49 if (full_reset_performed == 0) {
52 err = mdiobus_write(phydev->bus, 30, 0, 0x175c);
56 /* ensure no bus delays overlap reset period */
57 err = mdiobus_read(phydev->bus, 30, 0);
59 /* data sheet specifies reset period is 2 msec */
62 /* enable IP175C mode */
63 err = mdiobus_write(phydev->bus, 29, 31, 0x175c);
67 /* Set MII0 speed and duplex (in PHY mode) */
68 err = mdiobus_write(phydev->bus, 29, 22, 0x420);
72 /* reset switch ports */
73 for (i = 0; i < 5; i++) {
74 err = mdiobus_write(phydev->bus, i,
75 MII_BMCR, BMCR_RESET);
80 for (i = 0; i < 5; i++)
81 err = mdiobus_read(phydev->bus, i, MII_BMCR);
85 full_reset_performed = 1;
88 if (phydev->addr != 4) {
89 phydev->state = PHY_RUNNING;
90 phydev->speed = SPEED_100;
91 phydev->duplex = DUPLEX_FULL;
93 netif_carrier_on(phydev->attached_dev);
99 static int ip1xx_reset(struct phy_device *phydev)
103 /* Software Reset PHY */
104 bmcr = phy_read(phydev, MII_BMCR);
106 err = phy_write(phydev, MII_BMCR, bmcr);
111 bmcr = phy_read(phydev, MII_BMCR);
112 } while (bmcr & BMCR_RESET);
117 static int ip1001_config_init(struct phy_device *phydev)
121 c = ip1xx_reset(phydev);
125 /* Enable Auto Power Saving mode */
126 c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2);
131 /* Additional delay (2ns) used to adjust RX clock phase
132 * at GMII/ RGMII interface */
133 c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
134 c |= IP1001_PHASE_SEL_MASK;
136 return phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c);
139 static int ip101a_config_init(struct phy_device *phydev)
143 c = ip1xx_reset(phydev);
147 /* Enable Auto Power Saving mode */
148 c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
153 static int ip175c_read_status(struct phy_device *phydev)
155 if (phydev->addr == 4) /* WAN port */
156 genphy_read_status(phydev);
158 /* Don't need to read status for switch ports */
159 phydev->irq = PHY_IGNORE_INTERRUPT;
164 static int ip175c_config_aneg(struct phy_device *phydev)
166 if (phydev->addr == 4) /* WAN port */
167 genphy_config_aneg(phydev);
172 static struct phy_driver ip175c_driver = {
173 .phy_id = 0x02430d80,
174 .name = "ICPlus IP175C",
175 .phy_id_mask = 0x0ffffff0,
176 .features = PHY_BASIC_FEATURES,
177 .config_init = &ip175c_config_init,
178 .config_aneg = &ip175c_config_aneg,
179 .read_status = &ip175c_read_status,
180 .suspend = genphy_suspend,
181 .resume = genphy_resume,
182 .driver = { .owner = THIS_MODULE,},
185 static struct phy_driver ip1001_driver = {
186 .phy_id = 0x02430d90,
187 .name = "ICPlus IP1001",
188 .phy_id_mask = 0x0ffffff0,
189 .features = PHY_GBIT_FEATURES | SUPPORTED_Pause |
190 SUPPORTED_Asym_Pause,
191 .config_init = &ip1001_config_init,
192 .config_aneg = &genphy_config_aneg,
193 .read_status = &genphy_read_status,
194 .suspend = genphy_suspend,
195 .resume = genphy_resume,
196 .driver = { .owner = THIS_MODULE,},
199 static struct phy_driver ip101a_driver = {
200 .phy_id = 0x02430c54,
201 .name = "ICPlus IP101A",
202 .phy_id_mask = 0x0ffffff0,
203 .features = PHY_BASIC_FEATURES | SUPPORTED_Pause |
204 SUPPORTED_Asym_Pause,
205 .config_init = &ip101a_config_init,
206 .config_aneg = &genphy_config_aneg,
207 .read_status = &genphy_read_status,
208 .suspend = genphy_suspend,
209 .resume = genphy_resume,
210 .driver = { .owner = THIS_MODULE,},
213 static int __init icplus_init(void)
217 ret = phy_driver_register(&ip1001_driver);
221 ret = phy_driver_register(&ip101a_driver);
225 return phy_driver_register(&ip175c_driver);
228 static void __exit icplus_exit(void)
230 phy_driver_unregister(&ip1001_driver);
231 phy_driver_unregister(&ip101a_driver);
232 phy_driver_unregister(&ip175c_driver);
235 module_init(icplus_init);
236 module_exit(icplus_exit);
238 static struct mdio_device_id __maybe_unused icplus_tbl[] = {
239 { 0x02430d80, 0x0ffffff0 },
240 { 0x02430d90, 0x0ffffff0 },
244 MODULE_DEVICE_TABLE(mdio, icplus_tbl);