Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/smsc.c |
| 3 | * |
| 4 | * Driver for SMSC PHYs |
| 5 | * |
| 6 | * Author: Herbert Valerio Riedel |
| 7 | * |
| 8 | * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | * |
Steve Glendinning | 90b24cf | 2012-04-16 12:13:29 +0100 | [diff] [blame] | 15 | * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net |
Steve Glendinning | 4d9b1a0 | 2008-04-28 18:37:29 +0100 | [diff] [blame] | 16 | * |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 17 | */ |
| 18 | |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 19 | #include <linux/kernel.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/mii.h> |
| 22 | #include <linux/ethtool.h> |
| 23 | #include <linux/phy.h> |
| 24 | #include <linux/netdevice.h> |
Javier Martinez Canillas | 43c6759 | 2012-01-03 20:23:18 -0500 | [diff] [blame] | 25 | #include <linux/smscphy.h> |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 26 | |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 27 | static int smsc_phy_config_intr(struct phy_device *phydev) |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 28 | { |
| 29 | int rc = phy_write (phydev, MII_LAN83C185_IM, |
| 30 | ((PHY_INTERRUPT_ENABLED == phydev->interrupts) |
| 31 | ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS |
| 32 | : 0)); |
| 33 | |
| 34 | return rc < 0 ? rc : 0; |
| 35 | } |
| 36 | |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 37 | static int smsc_phy_ack_interrupt(struct phy_device *phydev) |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 38 | { |
| 39 | int rc = phy_read (phydev, MII_LAN83C185_ISF); |
| 40 | |
| 41 | return rc < 0 ? rc : 0; |
| 42 | } |
| 43 | |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 44 | static int smsc_phy_config_init(struct phy_device *phydev) |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 45 | { |
Giuseppe Cavallaro | 698244a | 2010-01-06 20:35:14 -0800 | [diff] [blame] | 46 | int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); |
| 47 | if (rc < 0) |
| 48 | return rc; |
| 49 | |
| 50 | /* Enable energy detect mode for this SMSC Transceivers */ |
| 51 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, |
| 52 | rc | MII_LAN83C185_EDPWRDOWN); |
| 53 | if (rc < 0) |
| 54 | return rc; |
| 55 | |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 56 | return smsc_phy_ack_interrupt (phydev); |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 57 | } |
| 58 | |
Giuseppe Cavallaro | 698244a | 2010-01-06 20:35:14 -0800 | [diff] [blame] | 59 | static int lan911x_config_init(struct phy_device *phydev) |
| 60 | { |
| 61 | return smsc_phy_ack_interrupt(phydev); |
| 62 | } |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 63 | |
Patrick Trantham | 4223dbf | 2012-11-15 09:00:57 +0000 | [diff] [blame] | 64 | /* |
| 65 | * The LAN8710/LAN8720 requires a minimum of 2 link pulses within 64ms of each |
| 66 | * other in order to set the ENERGYON bit and exit EDPD mode. If a link partner |
| 67 | * does send the pulses within this interval, the PHY will remained powered |
| 68 | * down. |
| 69 | * |
| 70 | * This workaround will manually toggle the PHY on/off upon calls to read_status |
| 71 | * in order to generate link test pulses if the link is down. If a link partner |
| 72 | * is present, it will respond to the pulses, which will cause the ENERGYON bit |
| 73 | * to be set and will cause the EDPD mode to be exited. |
| 74 | */ |
| 75 | static int lan87xx_read_status(struct phy_device *phydev) |
| 76 | { |
| 77 | int err = genphy_read_status(phydev); |
| 78 | |
| 79 | if (!phydev->link) { |
| 80 | /* Disable EDPD to wake up PHY */ |
| 81 | int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); |
| 82 | if (rc < 0) |
| 83 | return rc; |
| 84 | |
| 85 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, |
| 86 | rc & ~MII_LAN83C185_EDPWRDOWN); |
| 87 | if (rc < 0) |
| 88 | return rc; |
| 89 | |
| 90 | /* Sleep 64 ms to allow ~5 link test pulses to be sent */ |
| 91 | msleep(64); |
| 92 | |
| 93 | /* Re-enable EDPD */ |
| 94 | rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); |
| 95 | if (rc < 0) |
| 96 | return rc; |
| 97 | |
| 98 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, |
| 99 | rc | MII_LAN83C185_EDPWRDOWN); |
| 100 | if (rc < 0) |
| 101 | return rc; |
| 102 | } |
| 103 | |
| 104 | return err; |
| 105 | } |
| 106 | |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 107 | static struct phy_driver smsc_phy_driver[] = { |
| 108 | { |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 109 | .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */ |
| 110 | .phy_id_mask = 0xfffffff0, |
| 111 | .name = "SMSC LAN83C185", |
| 112 | |
| 113 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
| 114 | | SUPPORTED_Asym_Pause), |
| 115 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, |
| 116 | |
| 117 | /* basic functions */ |
| 118 | .config_aneg = genphy_config_aneg, |
| 119 | .read_status = genphy_read_status, |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 120 | .config_init = smsc_phy_config_init, |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 121 | |
| 122 | /* IRQ related */ |
Steve Glendinning | 48c41b9 | 2008-04-28 18:36:46 +0100 | [diff] [blame] | 123 | .ack_interrupt = smsc_phy_ack_interrupt, |
| 124 | .config_intr = smsc_phy_config_intr, |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 125 | |
Steve Glendinning | c64d2a9 | 2009-01-22 14:07:43 -0800 | [diff] [blame] | 126 | .suspend = genphy_suspend, |
| 127 | .resume = genphy_resume, |
| 128 | |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 129 | .driver = { .owner = THIS_MODULE, } |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 130 | }, { |
Steve Glendinning | 4d9b1a0 | 2008-04-28 18:37:29 +0100 | [diff] [blame] | 131 | .phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */ |
| 132 | .phy_id_mask = 0xfffffff0, |
| 133 | .name = "SMSC LAN8187", |
| 134 | |
| 135 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
| 136 | | SUPPORTED_Asym_Pause), |
| 137 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, |
| 138 | |
| 139 | /* basic functions */ |
| 140 | .config_aneg = genphy_config_aneg, |
| 141 | .read_status = genphy_read_status, |
| 142 | .config_init = smsc_phy_config_init, |
| 143 | |
| 144 | /* IRQ related */ |
| 145 | .ack_interrupt = smsc_phy_ack_interrupt, |
| 146 | .config_intr = smsc_phy_config_intr, |
| 147 | |
Steve Glendinning | c64d2a9 | 2009-01-22 14:07:43 -0800 | [diff] [blame] | 148 | .suspend = genphy_suspend, |
| 149 | .resume = genphy_resume, |
| 150 | |
Steve Glendinning | 4d9b1a0 | 2008-04-28 18:37:29 +0100 | [diff] [blame] | 151 | .driver = { .owner = THIS_MODULE, } |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 152 | }, { |
Steve Glendinning | 4d9b1a0 | 2008-04-28 18:37:29 +0100 | [diff] [blame] | 153 | .phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */ |
| 154 | .phy_id_mask = 0xfffffff0, |
| 155 | .name = "SMSC LAN8700", |
| 156 | |
| 157 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
| 158 | | SUPPORTED_Asym_Pause), |
| 159 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, |
| 160 | |
| 161 | /* basic functions */ |
| 162 | .config_aneg = genphy_config_aneg, |
| 163 | .read_status = genphy_read_status, |
| 164 | .config_init = smsc_phy_config_init, |
| 165 | |
| 166 | /* IRQ related */ |
| 167 | .ack_interrupt = smsc_phy_ack_interrupt, |
| 168 | .config_intr = smsc_phy_config_intr, |
| 169 | |
Steve Glendinning | c64d2a9 | 2009-01-22 14:07:43 -0800 | [diff] [blame] | 170 | .suspend = genphy_suspend, |
| 171 | .resume = genphy_resume, |
| 172 | |
Steve Glendinning | 4d9b1a0 | 2008-04-28 18:37:29 +0100 | [diff] [blame] | 173 | .driver = { .owner = THIS_MODULE, } |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 174 | }, { |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 175 | .phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */ |
| 176 | .phy_id_mask = 0xfffffff0, |
| 177 | .name = "SMSC LAN911x Internal PHY", |
| 178 | |
| 179 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
| 180 | | SUPPORTED_Asym_Pause), |
| 181 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, |
| 182 | |
| 183 | /* basic functions */ |
| 184 | .config_aneg = genphy_config_aneg, |
| 185 | .read_status = genphy_read_status, |
Giuseppe Cavallaro | 698244a | 2010-01-06 20:35:14 -0800 | [diff] [blame] | 186 | .config_init = lan911x_config_init, |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 187 | |
| 188 | /* IRQ related */ |
| 189 | .ack_interrupt = smsc_phy_ack_interrupt, |
| 190 | .config_intr = smsc_phy_config_intr, |
| 191 | |
Steve Glendinning | c64d2a9 | 2009-01-22 14:07:43 -0800 | [diff] [blame] | 192 | .suspend = genphy_suspend, |
| 193 | .resume = genphy_resume, |
| 194 | |
Steve Glendinning | fd9abb3 | 2008-11-05 00:35:37 +0000 | [diff] [blame] | 195 | .driver = { .owner = THIS_MODULE, } |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 196 | }, { |
Steve Glendinning | e072b63 | 2009-03-23 15:17:31 -0700 | [diff] [blame] | 197 | .phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */ |
| 198 | .phy_id_mask = 0xfffffff0, |
| 199 | .name = "SMSC LAN8710/LAN8720", |
| 200 | |
| 201 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause |
| 202 | | SUPPORTED_Asym_Pause), |
| 203 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, |
| 204 | |
| 205 | /* basic functions */ |
| 206 | .config_aneg = genphy_config_aneg, |
Patrick Trantham | 4223dbf | 2012-11-15 09:00:57 +0000 | [diff] [blame] | 207 | .read_status = lan87xx_read_status, |
| 208 | .config_intr = smsc_phy_config_intr, |
Steve Glendinning | e072b63 | 2009-03-23 15:17:31 -0700 | [diff] [blame] | 209 | |
| 210 | /* IRQ related */ |
| 211 | .ack_interrupt = smsc_phy_ack_interrupt, |
| 212 | .config_intr = smsc_phy_config_intr, |
| 213 | |
| 214 | .suspend = genphy_suspend, |
| 215 | .resume = genphy_resume, |
| 216 | |
| 217 | .driver = { .owner = THIS_MODULE, } |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 218 | } }; |
Steve Glendinning | e072b63 | 2009-03-23 15:17:31 -0700 | [diff] [blame] | 219 | |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 220 | static int __init smsc_init(void) |
| 221 | { |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 222 | return phy_drivers_register(smsc_phy_driver, |
| 223 | ARRAY_SIZE(smsc_phy_driver)); |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | static void __exit smsc_exit(void) |
| 227 | { |
Christian Hohnstaedt | d5bf907 | 2012-07-04 05:44:34 +0000 | [diff] [blame] | 228 | return phy_drivers_unregister(smsc_phy_driver, |
| 229 | ARRAY_SIZE(smsc_phy_driver)); |
Herbert Valerio Riedel | c9e055a | 2006-05-07 23:22:53 +0200 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | MODULE_DESCRIPTION("SMSC PHY driver"); |
| 233 | MODULE_AUTHOR("Herbert Valerio Riedel"); |
| 234 | MODULE_LICENSE("GPL"); |
| 235 | |
| 236 | module_init(smsc_init); |
| 237 | module_exit(smsc_exit); |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 238 | |
Uwe Kleine-König | cf93c94 | 2010-10-03 23:43:32 +0000 | [diff] [blame] | 239 | static struct mdio_device_id __maybe_unused smsc_tbl[] = { |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 240 | { 0x0007c0a0, 0xfffffff0 }, |
| 241 | { 0x0007c0b0, 0xfffffff0 }, |
| 242 | { 0x0007c0c0, 0xfffffff0 }, |
| 243 | { 0x0007c0d0, 0xfffffff0 }, |
| 244 | { 0x0007c0f0, 0xfffffff0 }, |
| 245 | { } |
| 246 | }; |
| 247 | |
| 248 | MODULE_DEVICE_TABLE(mdio, smsc_tbl); |