Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Driver for ICPlus PHYs |
| 3 | * |
| 4 | * Copyright (c) 2007 Freescale Semiconductor, Inc. |
| 5 | * |
| 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. |
| 10 | * |
| 11 | */ |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/string.h> |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/unistd.h> |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 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> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/mii.h> |
| 26 | #include <linux/ethtool.h> |
| 27 | #include <linux/phy.h> |
| 28 | |
| 29 | #include <asm/io.h> |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/uaccess.h> |
| 32 | |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 33 | MODULE_DESCRIPTION("ICPlus IP175C/IP101A/IP101G/IC1001 PHY drivers"); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 34 | MODULE_AUTHOR("Michael Barkowski"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 37 | /* IP101A/G - IP1001 */ |
| 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_G_APS_ON 2 /* IP101A/G APS Mode bit */ |
Giuseppe CAVALLARO | 996f739 | 2012-04-17 21:16:40 +0000 | [diff] [blame] | 43 | #define IP101A_G_IRQ_CONF_STATUS 0x11 /* Conf Info IRQ & Status Reg */ |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 44 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 45 | static int ip175c_config_init(struct phy_device *phydev) |
| 46 | { |
| 47 | int err, i; |
| 48 | static int full_reset_performed = 0; |
| 49 | |
| 50 | if (full_reset_performed == 0) { |
| 51 | |
| 52 | /* master reset */ |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 53 | err = mdiobus_write(phydev->bus, 30, 0, 0x175c); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 54 | if (err < 0) |
| 55 | return err; |
| 56 | |
| 57 | /* ensure no bus delays overlap reset period */ |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 58 | err = mdiobus_read(phydev->bus, 30, 0); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 59 | |
| 60 | /* data sheet specifies reset period is 2 msec */ |
| 61 | mdelay(2); |
| 62 | |
| 63 | /* enable IP175C mode */ |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 64 | err = mdiobus_write(phydev->bus, 29, 31, 0x175c); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 65 | if (err < 0) |
| 66 | return err; |
| 67 | |
| 68 | /* Set MII0 speed and duplex (in PHY mode) */ |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 69 | err = mdiobus_write(phydev->bus, 29, 22, 0x420); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 70 | if (err < 0) |
| 71 | return err; |
| 72 | |
| 73 | /* reset switch ports */ |
| 74 | for (i = 0; i < 5; i++) { |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 75 | err = mdiobus_write(phydev->bus, i, |
| 76 | MII_BMCR, BMCR_RESET); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 77 | if (err < 0) |
| 78 | return err; |
| 79 | } |
| 80 | |
| 81 | for (i = 0; i < 5; i++) |
David Daney | 76231e0 | 2011-09-30 12:17:48 +0000 | [diff] [blame] | 82 | err = mdiobus_read(phydev->bus, i, MII_BMCR); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 83 | |
| 84 | mdelay(2); |
| 85 | |
| 86 | full_reset_performed = 1; |
| 87 | } |
| 88 | |
| 89 | if (phydev->addr != 4) { |
| 90 | phydev->state = PHY_RUNNING; |
| 91 | phydev->speed = SPEED_100; |
| 92 | phydev->duplex = DUPLEX_FULL; |
| 93 | phydev->link = 1; |
| 94 | netif_carrier_on(phydev->attached_dev); |
| 95 | } |
| 96 | |
| 97 | return 0; |
| 98 | } |
| 99 | |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 100 | static int ip1xx_reset(struct phy_device *phydev) |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 101 | { |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 102 | int bmcr; |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 103 | |
| 104 | /* Software Reset PHY */ |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 105 | bmcr = phy_read(phydev, MII_BMCR); |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 106 | if (bmcr < 0) |
| 107 | return bmcr; |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 108 | bmcr |= BMCR_RESET; |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 109 | bmcr = phy_write(phydev, MII_BMCR, bmcr); |
| 110 | if (bmcr < 0) |
| 111 | return bmcr; |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 112 | |
| 113 | do { |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 114 | bmcr = phy_read(phydev, MII_BMCR); |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 115 | if (bmcr < 0) |
| 116 | return bmcr; |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 117 | } while (bmcr & BMCR_RESET); |
| 118 | |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 119 | return 0; |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static int ip1001_config_init(struct phy_device *phydev) |
| 123 | { |
| 124 | int c; |
| 125 | |
| 126 | c = ip1xx_reset(phydev); |
| 127 | if (c < 0) |
| 128 | return c; |
| 129 | |
| 130 | /* Enable Auto Power Saving mode */ |
| 131 | c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2); |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 132 | if (c < 0) |
| 133 | return c; |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 134 | c |= IP1001_APS_ON; |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 135 | c = phy_write(phydev, IP1001_SPEC_CTRL_STATUS_2, c); |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 136 | if (c < 0) |
| 137 | return c; |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 138 | |
Giuseppe CAVALLARO | a4886d5 | 2011-10-10 21:37:56 +0000 | [diff] [blame] | 139 | if (phydev->interface == PHY_INTERFACE_MODE_RGMII) { |
| 140 | /* Additional delay (2ns) used to adjust RX clock phase |
| 141 | * at RGMII interface */ |
| 142 | c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 143 | if (c < 0) |
| 144 | return c; |
| 145 | |
Giuseppe CAVALLARO | a4886d5 | 2011-10-10 21:37:56 +0000 | [diff] [blame] | 146 | c |= IP1001_PHASE_SEL_MASK; |
| 147 | c = phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c); |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 148 | if (c < 0) |
| 149 | return c; |
Giuseppe CAVALLARO | a4886d5 | 2011-10-10 21:37:56 +0000 | [diff] [blame] | 150 | } |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 151 | |
David McKay | b8e3995 | 2012-02-21 21:24:57 +0000 | [diff] [blame] | 152 | return 0; |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 153 | } |
| 154 | |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 155 | static int ip101a_g_config_init(struct phy_device *phydev) |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 156 | { |
| 157 | int c; |
| 158 | |
| 159 | c = ip1xx_reset(phydev); |
| 160 | if (c < 0) |
| 161 | return c; |
| 162 | |
| 163 | /* Enable Auto Power Saving mode */ |
| 164 | c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 165 | c |= IP101A_G_APS_ON; |
Srinivas Kandagatla | b330014 | 2012-04-02 00:02:09 +0000 | [diff] [blame] | 166 | |
| 167 | return phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c); |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 168 | } |
| 169 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 170 | static int ip175c_read_status(struct phy_device *phydev) |
| 171 | { |
| 172 | if (phydev->addr == 4) /* WAN port */ |
| 173 | genphy_read_status(phydev); |
| 174 | else |
| 175 | /* Don't need to read status for switch ports */ |
| 176 | phydev->irq = PHY_IGNORE_INTERRUPT; |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int ip175c_config_aneg(struct phy_device *phydev) |
| 182 | { |
| 183 | if (phydev->addr == 4) /* WAN port */ |
| 184 | genphy_config_aneg(phydev); |
| 185 | |
| 186 | return 0; |
| 187 | } |
| 188 | |
Giuseppe CAVALLARO | 996f739 | 2012-04-17 21:16:40 +0000 | [diff] [blame] | 189 | static int ip101a_g_ack_interrupt(struct phy_device *phydev) |
| 190 | { |
| 191 | int err = phy_read(phydev, IP101A_G_IRQ_CONF_STATUS); |
| 192 | if (err < 0) |
| 193 | return err; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 198 | static struct phy_driver ip175c_driver = { |
| 199 | .phy_id = 0x02430d80, |
| 200 | .name = "ICPlus IP175C", |
| 201 | .phy_id_mask = 0x0ffffff0, |
| 202 | .features = PHY_BASIC_FEATURES, |
| 203 | .config_init = &ip175c_config_init, |
| 204 | .config_aneg = &ip175c_config_aneg, |
| 205 | .read_status = &ip175c_read_status, |
Giuseppe Cavallaro | dab1086 | 2010-07-20 13:24:25 -0700 | [diff] [blame] | 206 | .suspend = genphy_suspend, |
| 207 | .resume = genphy_resume, |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 208 | .driver = { .owner = THIS_MODULE,}, |
| 209 | }; |
| 210 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 211 | static struct phy_driver ip1001_driver = { |
| 212 | .phy_id = 0x02430d90, |
| 213 | .name = "ICPlus IP1001", |
| 214 | .phy_id_mask = 0x0ffffff0, |
| 215 | .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | |
| 216 | SUPPORTED_Asym_Pause, |
| 217 | .config_init = &ip1001_config_init, |
| 218 | .config_aneg = &genphy_config_aneg, |
| 219 | .read_status = &genphy_read_status, |
| 220 | .suspend = genphy_suspend, |
| 221 | .resume = genphy_resume, |
| 222 | .driver = { .owner = THIS_MODULE,}, |
| 223 | }; |
| 224 | |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 225 | static struct phy_driver ip101a_g_driver = { |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 226 | .phy_id = 0x02430c54, |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 227 | .name = "ICPlus IP101A/G", |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 228 | .phy_id_mask = 0x0ffffff0, |
| 229 | .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | |
| 230 | SUPPORTED_Asym_Pause, |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 231 | .flags = PHY_HAS_INTERRUPT, |
Giuseppe CAVALLARO | 996f739 | 2012-04-17 21:16:40 +0000 | [diff] [blame] | 232 | .ack_interrupt = ip101a_g_ack_interrupt, |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 233 | .config_init = &ip101a_g_config_init, |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 234 | .config_aneg = &genphy_config_aneg, |
| 235 | .read_status = &genphy_read_status, |
| 236 | .suspend = genphy_suspend, |
| 237 | .resume = genphy_resume, |
| 238 | .driver = { .owner = THIS_MODULE,}, |
| 239 | }; |
| 240 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 241 | static int __init icplus_init(void) |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 242 | { |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 243 | int ret = 0; |
| 244 | |
| 245 | ret = phy_driver_register(&ip1001_driver); |
| 246 | if (ret < 0) |
| 247 | return -ENODEV; |
| 248 | |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 249 | ret = phy_driver_register(&ip101a_g_driver); |
Giuseppe CAVALLARO | 9c9b1f2 | 2011-09-06 20:14:50 +0000 | [diff] [blame] | 250 | if (ret < 0) |
| 251 | return -ENODEV; |
| 252 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 253 | return phy_driver_register(&ip175c_driver); |
| 254 | } |
| 255 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 256 | static void __exit icplus_exit(void) |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 257 | { |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 258 | phy_driver_unregister(&ip1001_driver); |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 259 | phy_driver_unregister(&ip101a_g_driver); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 260 | phy_driver_unregister(&ip175c_driver); |
| 261 | } |
| 262 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 263 | module_init(icplus_init); |
| 264 | module_exit(icplus_exit); |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 265 | |
Uwe Kleine-König | cf93c94 | 2010-10-03 23:43:32 +0000 | [diff] [blame] | 266 | static struct mdio_device_id __maybe_unused icplus_tbl[] = { |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 267 | { 0x02430d80, 0x0ffffff0 }, |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 268 | { 0x02430d90, 0x0ffffff0 }, |
Giuseppe CAVALLARO | e3e09f2 | 2012-02-21 21:26:28 +0000 | [diff] [blame] | 269 | { 0x02430c54, 0x0ffffff0 }, |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 270 | { } |
| 271 | }; |
| 272 | |
| 273 | MODULE_DEVICE_TABLE(mdio, icplus_tbl); |