| Giuseppe Cavallaro | f95be180 | 2008-11-28 16:42:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/ste10Xp.c |
| 3 | * |
| 4 | * Driver for STMicroelectronics STe10Xp PHYs |
| 5 | * |
| 6 | * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> |
| 7 | * |
| 8 | * Copyright (c) 2008 STMicroelectronics Limited |
| 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 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/sched.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/moduleparam.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/netdevice.h> |
| 24 | #include <linux/ethtool.h> |
| 25 | #include <linux/mii.h> |
| 26 | #include <linux/phy.h> |
| 27 | |
| 28 | #define MII_XCIIS 0x11 /* Configuration Info IRQ & Status Reg */ |
| 29 | #define MII_XIE 0x12 /* Interrupt Enable Register */ |
| 30 | #define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */ |
| 31 | |
| 32 | #define STE101P_PHY_ID 0x00061c50 |
| 33 | #define STE100P_PHY_ID 0x1c040011 |
| 34 | |
| 35 | static int ste10Xp_config_init(struct phy_device *phydev) |
| 36 | { |
| 37 | int value, err; |
| 38 | |
| 39 | /* Software Reset PHY */ |
| 40 | value = phy_read(phydev, MII_BMCR); |
| 41 | if (value < 0) |
| 42 | return value; |
| 43 | |
| 44 | value |= BMCR_RESET; |
| 45 | err = phy_write(phydev, MII_BMCR, value); |
| 46 | if (err < 0) |
| 47 | return err; |
| 48 | |
| 49 | do { |
| 50 | value = phy_read(phydev, MII_BMCR); |
| 51 | } while (value & BMCR_RESET); |
| 52 | |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | static int ste10Xp_config_intr(struct phy_device *phydev) |
| 57 | { |
| 58 | int err, value; |
| 59 | |
| 60 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { |
| 61 | /* Enable all STe101P interrupts (PR12) */ |
| 62 | err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK); |
| 63 | /* clear any pending interrupts */ |
| 64 | if (err == 0) { |
| 65 | value = phy_read(phydev, MII_XCIIS); |
| 66 | if (value < 0) |
| 67 | err = value; |
| 68 | } |
| 69 | } else |
| 70 | err = phy_write(phydev, MII_XIE, 0); |
| 71 | |
| 72 | return err; |
| 73 | } |
| 74 | |
| 75 | static int ste10Xp_ack_interrupt(struct phy_device *phydev) |
| 76 | { |
| 77 | int err = phy_read(phydev, MII_XCIIS); |
| 78 | if (err < 0) |
| 79 | return err; |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static struct phy_driver ste101p_pdriver = { |
| 85 | .phy_id = STE101P_PHY_ID, |
| 86 | .phy_id_mask = 0xfffffff0, |
| 87 | .name = "STe101p", |
| 88 | .features = PHY_BASIC_FEATURES | SUPPORTED_Pause, |
| 89 | .flags = PHY_HAS_INTERRUPT, |
| 90 | .config_init = ste10Xp_config_init, |
| 91 | .config_aneg = genphy_config_aneg, |
| 92 | .read_status = genphy_read_status, |
| 93 | .ack_interrupt = ste10Xp_ack_interrupt, |
| 94 | .config_intr = ste10Xp_config_intr, |
| 95 | .suspend = genphy_suspend, |
| 96 | .resume = genphy_resume, |
| 97 | .driver = {.owner = THIS_MODULE,} |
| 98 | }; |
| 99 | |
| 100 | static struct phy_driver ste100p_pdriver = { |
| 101 | .phy_id = STE100P_PHY_ID, |
| 102 | .phy_id_mask = 0xffffffff, |
| 103 | .name = "STe100p", |
| 104 | .features = PHY_BASIC_FEATURES | SUPPORTED_Pause, |
| 105 | .flags = PHY_HAS_INTERRUPT, |
| 106 | .config_init = ste10Xp_config_init, |
| 107 | .config_aneg = genphy_config_aneg, |
| 108 | .read_status = genphy_read_status, |
| 109 | .ack_interrupt = ste10Xp_ack_interrupt, |
| 110 | .config_intr = ste10Xp_config_intr, |
| 111 | .suspend = genphy_suspend, |
| 112 | .resume = genphy_resume, |
| 113 | .driver = {.owner = THIS_MODULE,} |
| 114 | }; |
| 115 | |
| 116 | static int __init ste10Xp_init(void) |
| 117 | { |
| 118 | int retval; |
| 119 | |
| 120 | retval = phy_driver_register(&ste100p_pdriver); |
| 121 | if (retval < 0) |
| 122 | return retval; |
| 123 | return phy_driver_register(&ste101p_pdriver); |
| 124 | } |
| 125 | |
| 126 | static void __exit ste10Xp_exit(void) |
| 127 | { |
| 128 | phy_driver_unregister(&ste100p_pdriver); |
| 129 | phy_driver_unregister(&ste101p_pdriver); |
| 130 | } |
| 131 | |
| 132 | module_init(ste10Xp_init); |
| 133 | module_exit(ste10Xp_exit); |
| 134 | |
| 135 | MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver"); |
| 136 | MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); |
| 137 | MODULE_LICENSE("GPL"); |