| Andy Fleming | 60ca78b | 2011-04-07 21:56:05 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Davicom 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 | #define MIIM_DM9161_SCR 0x10 |
| 26 | #define MIIM_DM9161_SCR_INIT 0x0610 |
| 27 | |
| 28 | /* DM9161 Specified Configuration and Status Register */ |
| 29 | #define MIIM_DM9161_SCSR 0x11 |
| 30 | #define MIIM_DM9161_SCSR_100F 0x8000 |
| 31 | #define MIIM_DM9161_SCSR_100H 0x4000 |
| 32 | #define MIIM_DM9161_SCSR_10F 0x2000 |
| 33 | #define MIIM_DM9161_SCSR_10H 0x1000 |
| 34 | |
| 35 | /* DM9161 10BT Configuration/Status */ |
| 36 | #define MIIM_DM9161_10BTCSR 0x12 |
| 37 | #define MIIM_DM9161_10BTCSR_INIT 0x7800 |
| 38 | |
| 39 | |
| 40 | /* Davicom DM9161E */ |
| 41 | static int dm9161_config(struct phy_device *phydev) |
| 42 | { |
| 43 | phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_ISOLATE); |
| 44 | /* Do not bypass the scrambler/descrambler */ |
| 45 | phy_write(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_SCR, |
| 46 | MIIM_DM9161_SCR_INIT); |
| 47 | /* Clear 10BTCSR to default */ |
| 48 | phy_write(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_10BTCSR, |
| 49 | MIIM_DM9161_10BTCSR_INIT); |
| 50 | |
| 51 | genphy_config_aneg(phydev); |
| 52 | |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | static int dm9161_parse_status(struct phy_device *phydev) |
| 57 | { |
| 58 | int mii_reg; |
| 59 | |
| 60 | mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_SCSR); |
| 61 | |
| 62 | if (mii_reg & (MIIM_DM9161_SCSR_100F | MIIM_DM9161_SCSR_100H)) |
| 63 | phydev->speed = SPEED_100; |
| 64 | else |
| 65 | phydev->speed = SPEED_10; |
| 66 | |
| 67 | if (mii_reg & (MIIM_DM9161_SCSR_100F | MIIM_DM9161_SCSR_10F)) |
| 68 | phydev->duplex = DUPLEX_FULL; |
| 69 | else |
| 70 | phydev->duplex = DUPLEX_HALF; |
| 71 | |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | static int dm9161_startup(struct phy_device *phydev) |
| 76 | { |
| 77 | genphy_update_link(phydev); |
| 78 | dm9161_parse_status(phydev); |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static struct phy_driver DM9161_driver = { |
| 84 | .name = "Davicom DM9161E", |
| 85 | .uid = 0x181b880, |
| 86 | .mask = 0xffffff0, |
| 87 | .features = PHY_BASIC_FEATURES, |
| 88 | .config = &dm9161_config, |
| 89 | .startup = &dm9161_startup, |
| 90 | .shutdown = &genphy_shutdown, |
| 91 | }; |
| 92 | |
| 93 | int phy_davicom_init(void) |
| 94 | { |
| 95 | phy_register(&DM9161_driver); |
| 96 | |
| 97 | return 0; |
| 98 | } |