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1/*
2 * Driver for Broadcom 63xx SOCs integrated PHYs
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
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9#include <linux/module.h>
10#include <linux/phy.h>
11
12#define MII_BCM63XX_IR 0x1a /* interrupt register */
13#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
14#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
15#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
16#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
17#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
18
19MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
20MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
21MODULE_LICENSE("GPL");
22
23static int bcm63xx_config_init(struct phy_device *phydev)
24{
25 int reg, err;
26
27 reg = phy_read(phydev, MII_BCM63XX_IR);
28 if (reg < 0)
29 return reg;
30
31 /* Mask interrupts globally. */
32 reg |= MII_BCM63XX_IR_GMASK;
33 err = phy_write(phydev, MII_BCM63XX_IR, reg);
34 if (err < 0)
35 return err;
36
37 /* Unmask events we are interested in */
38 reg = ~(MII_BCM63XX_IR_DUPLEX |
39 MII_BCM63XX_IR_SPEED |
40 MII_BCM63XX_IR_LINK) |
41 MII_BCM63XX_IR_EN;
42 err = phy_write(phydev, MII_BCM63XX_IR, reg);
43 if (err < 0)
44 return err;
45 return 0;
46}
47
48static int bcm63xx_ack_interrupt(struct phy_device *phydev)
49{
50 int reg;
51
52 /* Clear pending interrupts. */
53 reg = phy_read(phydev, MII_BCM63XX_IR);
54 if (reg < 0)
55 return reg;
56
57 return 0;
58}
59
60static int bcm63xx_config_intr(struct phy_device *phydev)
61{
62 int reg, err;
63
64 reg = phy_read(phydev, MII_BCM63XX_IR);
65 if (reg < 0)
66 return reg;
67
68 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
69 reg &= ~MII_BCM63XX_IR_GMASK;
70 else
71 reg |= MII_BCM63XX_IR_GMASK;
72
73 err = phy_write(phydev, MII_BCM63XX_IR, reg);
74 return err;
75}
76
77static struct phy_driver bcm63xx_1_driver = {
78 .phy_id = 0x00406000,
79 .phy_id_mask = 0xfffffc00,
80 .name = "Broadcom BCM63XX (1)",
81 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
82 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
83 .flags = PHY_HAS_INTERRUPT,
84 .config_init = bcm63xx_config_init,
85 .config_aneg = genphy_config_aneg,
86 .read_status = genphy_read_status,
87 .ack_interrupt = bcm63xx_ack_interrupt,
88 .config_intr = bcm63xx_config_intr,
89 .driver = { .owner = THIS_MODULE },
90};
91
92/* same phy as above, with just a different OUI */
93static struct phy_driver bcm63xx_2_driver = {
94 .phy_id = 0x002bdc00,
95 .phy_id_mask = 0xfffffc00,
96 .name = "Broadcom BCM63XX (2)",
97 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
98 .flags = PHY_HAS_INTERRUPT,
99 .config_init = bcm63xx_config_init,
100 .config_aneg = genphy_config_aneg,
101 .read_status = genphy_read_status,
102 .ack_interrupt = bcm63xx_ack_interrupt,
103 .config_intr = bcm63xx_config_intr,
104 .driver = { .owner = THIS_MODULE },
105};
106
107static int __init bcm63xx_phy_init(void)
108{
109 int ret;
110
111 ret = phy_driver_register(&bcm63xx_1_driver);
112 if (ret)
113 goto out_63xx_1;
114 ret = phy_driver_register(&bcm63xx_2_driver);
115 if (ret)
116 goto out_63xx_2;
117 return ret;
118
119out_63xx_2:
120 phy_driver_unregister(&bcm63xx_1_driver);
121out_63xx_1:
122 return ret;
123}
124
125static void __exit bcm63xx_phy_exit(void)
126{
127 phy_driver_unregister(&bcm63xx_1_driver);
128 phy_driver_unregister(&bcm63xx_2_driver);
129}
130
131module_init(bcm63xx_phy_init);
132module_exit(bcm63xx_phy_exit);
133
134static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
135 { 0x00406000, 0xfffffc00 },
136 { 0x002bdc00, 0xfffffc00 },
137 { }
138};
139
140MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Driver for Broadcom 63xx SOCs integrated PHYs
4 */
5#include "bcm-phy-lib.h"
6#include <linux/module.h>
7#include <linux/phy.h>
8
9#define MII_BCM63XX_IR 0x1a /* interrupt register */
10#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
11#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
12#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
13#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
14#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
15
16MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
17MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
18MODULE_LICENSE("GPL");
19
20static int bcm63xx_config_intr(struct phy_device *phydev)
21{
22 int reg, err;
23
24 reg = phy_read(phydev, MII_BCM63XX_IR);
25 if (reg < 0)
26 return reg;
27
28 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
29 err = bcm_phy_ack_intr(phydev);
30 if (err)
31 return err;
32
33 reg &= ~MII_BCM63XX_IR_GMASK;
34 err = phy_write(phydev, MII_BCM63XX_IR, reg);
35 } else {
36 reg |= MII_BCM63XX_IR_GMASK;
37 err = phy_write(phydev, MII_BCM63XX_IR, reg);
38 if (err)
39 return err;
40
41 err = bcm_phy_ack_intr(phydev);
42 }
43
44 return err;
45}
46
47static int bcm63xx_config_init(struct phy_device *phydev)
48{
49 int reg, err;
50
51 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
52 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
53
54 reg = phy_read(phydev, MII_BCM63XX_IR);
55 if (reg < 0)
56 return reg;
57
58 /* Mask interrupts globally. */
59 reg |= MII_BCM63XX_IR_GMASK;
60 err = phy_write(phydev, MII_BCM63XX_IR, reg);
61 if (err < 0)
62 return err;
63
64 /* Unmask events we are interested in */
65 reg = ~(MII_BCM63XX_IR_DUPLEX |
66 MII_BCM63XX_IR_SPEED |
67 MII_BCM63XX_IR_LINK) |
68 MII_BCM63XX_IR_EN;
69 return phy_write(phydev, MII_BCM63XX_IR, reg);
70}
71
72static struct phy_driver bcm63xx_driver[] = {
73{
74 .phy_id = 0x00406000,
75 .phy_id_mask = 0xfffffc00,
76 .name = "Broadcom BCM63XX (1)",
77 /* PHY_BASIC_FEATURES */
78 .flags = PHY_IS_INTERNAL,
79 .config_init = bcm63xx_config_init,
80 .config_intr = bcm63xx_config_intr,
81 .handle_interrupt = bcm_phy_handle_interrupt,
82}, {
83 /* same phy as above, with just a different OUI */
84 .phy_id = 0x002bdc00,
85 .phy_id_mask = 0xfffffc00,
86 .name = "Broadcom BCM63XX (2)",
87 /* PHY_BASIC_FEATURES */
88 .flags = PHY_IS_INTERNAL,
89 .config_init = bcm63xx_config_init,
90 .config_intr = bcm63xx_config_intr,
91 .handle_interrupt = bcm_phy_handle_interrupt,
92} };
93
94module_phy_driver(bcm63xx_driver);
95
96static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
97 { 0x00406000, 0xfffffc00 },
98 { 0x002bdc00, 0xfffffc00 },
99 { }
100};
101
102MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);