2 * ADM6996 switch driver
4 * Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License v2 as published by the
8 * Free Software Foundation
10 #include <linux/kernel.h>
11 #include <linux/string.h>
12 #include <linux/errno.h>
13 #include <linux/unistd.h>
14 #include <linux/slab.h>
15 #include <linux/interrupt.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
18 #include <linux/netdevice.h>
19 #include <linux/etherdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/spinlock.h>
23 #include <linux/module.h>
24 #include <linux/mii.h>
25 #include <linux/ethtool.h>
26 #include <linux/phy.h>
30 #include <asm/uaccess.h>
33 MODULE_DESCRIPTION("Infineon ADM6996 Switch");
34 MODULE_AUTHOR("Felix Fietkau");
35 MODULE_LICENSE("GPL");
38 /* use abstraction for regops, we want to add gpio support in the future */
39 u16 (*read)(struct phy_device *phydev, enum admreg reg);
40 void (*write)(struct phy_device *phydev, enum admreg reg, u16 val);
43 #define to_adm(_phy) ((struct adm6996_priv *) (_phy)->priv)
47 r16(struct phy_device *pdev, enum admreg reg)
49 return to_adm(pdev)->read(pdev, reg);
53 w16(struct phy_device *pdev, enum admreg reg, u16 val)
55 to_adm(pdev)->write(pdev, reg, val);
60 adm6996_read_mii_reg(struct phy_device *phydev, enum admreg reg)
62 return phydev->bus->read(phydev->bus, PHYADDR(reg));
66 adm6996_write_mii_reg(struct phy_device *phydev, enum admreg reg, u16 val)
68 phydev->bus->write(phydev->bus, PHYADDR(reg), val);
72 static int adm6996_config_init(struct phy_device *pdev)
76 printk("%s: ADM6996 PHY driver attached.\n", pdev->attached_dev->name);
77 pdev->supported = ADVERTISED_100baseT_Full;
78 pdev->advertising = ADVERTISED_100baseT_Full;
80 /* initialize port and vlan settings */
81 for (i = 0; i < ADM_PHY_PORTS; i++) {
82 w16(pdev, adm_portcfg[i], ADM_PORTCFG_INIT |
83 ADM_PORTCFG_PVID((i == ADM_WAN_PORT) ? 1 : 0));
85 w16(pdev, adm_portcfg[5], ADM_PORTCFG_CPU);
88 for (i = 0; i < ADM_PHY_PORTS; i++) {
89 w16(pdev, ADM_PHY_PORT(i), ADM_PHYCFG_INIT);
95 static int adm6996_read_status(struct phy_device *phydev)
97 phydev->speed = SPEED_100;
98 phydev->duplex = DUPLEX_FULL;
99 phydev->state = PHY_UP;
103 static int adm6996_config_aneg(struct phy_device *phydev)
108 static int adm6996_probe(struct phy_device *pdev)
110 struct adm6996_priv *priv;
112 priv = kzalloc(sizeof(struct adm6996_priv), GFP_KERNEL);
116 priv->read = adm6996_read_mii_reg;
117 priv->write = adm6996_write_mii_reg;
122 static void adm6996_remove(struct phy_device *pdev)
127 static bool adm6996_detect(struct mii_bus *bus, int addr)
131 /* we only attach to phy id 0 */
135 /* look for the switch on the bus */
136 reg = bus->read(bus, PHYADDR(ADM_SIG0)) & ADM_SIG0_MASK;
137 if (reg != ADM_SIG0_VAL)
140 reg = bus->read(bus, PHYADDR(ADM_SIG1)) & ADM_SIG1_MASK;
141 if (reg != ADM_SIG1_VAL)
147 static struct phy_driver adm6996_driver = {
148 .name = "Infineon ADM6996",
149 .features = PHY_BASIC_FEATURES,
150 .detect = adm6996_detect,
151 .probe = adm6996_probe,
152 .remove = adm6996_remove,
153 .config_init = &adm6996_config_init,
154 .config_aneg = &adm6996_config_aneg,
155 .read_status = &adm6996_read_status,
156 .driver = { .owner = THIS_MODULE,},
159 static int __init adm6996_init(void)
161 return phy_driver_register(&adm6996_driver);
164 static void __exit adm6996_exit(void)
166 phy_driver_unregister(&adm6996_driver);
169 module_init(adm6996_init);
170 module_exit(adm6996_exit);