xref: /openbmc/linux/drivers/net/phy/bcm63xx.c (revision f3539c12)
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 "bcm-phy-lib.h"
10 #include <linux/module.h>
11 #include <linux/phy.h>
12 
13 #define MII_BCM63XX_IR		0x1a	/* interrupt register */
14 #define MII_BCM63XX_IR_EN	0x4000	/* global interrupt enable */
15 #define MII_BCM63XX_IR_DUPLEX	0x0800	/* duplex changed */
16 #define MII_BCM63XX_IR_SPEED	0x0400	/* speed changed */
17 #define MII_BCM63XX_IR_LINK	0x0200	/* link changed */
18 #define MII_BCM63XX_IR_GMASK	0x0100	/* global interrupt mask */
19 
20 MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
21 MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
22 MODULE_LICENSE("GPL");
23 
24 static int bcm63xx_config_init(struct phy_device *phydev)
25 {
26 	int reg, err;
27 
28 	reg = phy_read(phydev, MII_BCM63XX_IR);
29 	if (reg < 0)
30 		return reg;
31 
32 	/* Mask interrupts globally.  */
33 	reg |= MII_BCM63XX_IR_GMASK;
34 	err = phy_write(phydev, MII_BCM63XX_IR, reg);
35 	if (err < 0)
36 		return err;
37 
38 	/* Unmask events we are interested in  */
39 	reg = ~(MII_BCM63XX_IR_DUPLEX |
40 		MII_BCM63XX_IR_SPEED |
41 		MII_BCM63XX_IR_LINK) |
42 		MII_BCM63XX_IR_EN;
43 	return phy_write(phydev, MII_BCM63XX_IR, reg);
44 }
45 
46 static struct phy_driver bcm63xx_driver[] = {
47 {
48 	.phy_id		= 0x00406000,
49 	.phy_id_mask	= 0xfffffc00,
50 	.name		= "Broadcom BCM63XX (1)",
51 	/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
52 	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
53 	.flags		= PHY_HAS_INTERRUPT | PHY_IS_INTERNAL,
54 	.config_init	= bcm63xx_config_init,
55 	.config_aneg	= genphy_config_aneg,
56 	.read_status	= genphy_read_status,
57 	.ack_interrupt	= bcm_phy_ack_intr,
58 	.config_intr	= bcm_phy_config_intr,
59 }, {
60 	/* same phy as above, with just a different OUI */
61 	.phy_id		= 0x002bdc00,
62 	.phy_id_mask	= 0xfffffc00,
63 	.name		= "Broadcom BCM63XX (2)",
64 	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
65 	.flags		= PHY_HAS_INTERRUPT | PHY_IS_INTERNAL,
66 	.config_init	= bcm63xx_config_init,
67 	.config_aneg	= genphy_config_aneg,
68 	.read_status	= genphy_read_status,
69 	.ack_interrupt	= bcm_phy_ack_intr,
70 	.config_intr	= bcm_phy_config_intr,
71 } };
72 
73 module_phy_driver(bcm63xx_driver);
74 
75 static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
76 	{ 0x00406000, 0xfffffc00 },
77 	{ 0x002bdc00, 0xfffffc00 },
78 	{ }
79 };
80 
81 MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
82