1 /* 2 * LXT PHY drivers 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 17 * MA 02111-1307 USA 18 * 19 * Copyright 2010-2011 Freescale Semiconductor, Inc. 20 * author Andy Fleming 21 * 22 */ 23 #include <phy.h> 24 25 /* LXT971 Status 2 registers */ 26 #define MIIM_LXT971_SR2 0x11 /* Status Register 2 */ 27 #define MIIM_LXT971_SR2_SPEED_MASK 0x4200 28 #define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */ 29 #define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */ 30 #define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */ 31 #define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */ 32 33 34 /* LXT971 */ 35 static int lxt971_parse_status(struct phy_device *phydev) 36 { 37 int mii_reg; 38 int speed; 39 40 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2); 41 speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK; 42 43 switch (speed) { 44 case MIIM_LXT971_SR2_10HDX: 45 phydev->speed = SPEED_10; 46 phydev->duplex = DUPLEX_HALF; 47 break; 48 case MIIM_LXT971_SR2_10FDX: 49 phydev->speed = SPEED_10; 50 phydev->duplex = DUPLEX_FULL; 51 break; 52 case MIIM_LXT971_SR2_100HDX: 53 phydev->speed = SPEED_100; 54 phydev->duplex = DUPLEX_HALF; 55 break; 56 default: 57 phydev->speed = SPEED_100; 58 phydev->duplex = DUPLEX_FULL; 59 } 60 61 return 0; 62 } 63 64 static int lxt971_startup(struct phy_device *phydev) 65 { 66 genphy_update_link(phydev); 67 lxt971_parse_status(phydev); 68 69 return 0; 70 } 71 72 static struct phy_driver LXT971_driver = { 73 .name = "LXT971", 74 .uid = 0x1378e0, 75 .mask = 0xfffff0, 76 .features = PHY_BASIC_FEATURES, 77 .config = &genphy_config_aneg, 78 .startup = &lxt971_startup, 79 .shutdown = &genphy_shutdown, 80 }; 81 82 int phy_lxt_init(void) 83 { 84 phy_register(&LXT971_driver); 85 86 return 0; 87 } 88