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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"); |