1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Driver for Broadcom 63xx SOCs integrated PHYs
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun #include "bcm-phy-lib.h"
6*4882a593Smuzhiyun #include <linux/module.h>
7*4882a593Smuzhiyun #include <linux/phy.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define MII_BCM63XX_IR 0x1a /* interrupt register */
10*4882a593Smuzhiyun #define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
11*4882a593Smuzhiyun #define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
12*4882a593Smuzhiyun #define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
13*4882a593Smuzhiyun #define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
14*4882a593Smuzhiyun #define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
17*4882a593Smuzhiyun MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
18*4882a593Smuzhiyun MODULE_LICENSE("GPL");
19*4882a593Smuzhiyun
bcm63xx_config_intr(struct phy_device * phydev)20*4882a593Smuzhiyun static int bcm63xx_config_intr(struct phy_device *phydev)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun int reg, err;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun reg = phy_read(phydev, MII_BCM63XX_IR);
25*4882a593Smuzhiyun if (reg < 0)
26*4882a593Smuzhiyun return reg;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
29*4882a593Smuzhiyun reg &= ~MII_BCM63XX_IR_GMASK;
30*4882a593Smuzhiyun else
31*4882a593Smuzhiyun reg |= MII_BCM63XX_IR_GMASK;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun err = phy_write(phydev, MII_BCM63XX_IR, reg);
34*4882a593Smuzhiyun return err;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
bcm63xx_config_init(struct phy_device * phydev)37*4882a593Smuzhiyun static int bcm63xx_config_init(struct phy_device *phydev)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun int reg, err;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
42*4882a593Smuzhiyun linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun reg = phy_read(phydev, MII_BCM63XX_IR);
45*4882a593Smuzhiyun if (reg < 0)
46*4882a593Smuzhiyun return reg;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* Mask interrupts globally. */
49*4882a593Smuzhiyun reg |= MII_BCM63XX_IR_GMASK;
50*4882a593Smuzhiyun err = phy_write(phydev, MII_BCM63XX_IR, reg);
51*4882a593Smuzhiyun if (err < 0)
52*4882a593Smuzhiyun return err;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /* Unmask events we are interested in */
55*4882a593Smuzhiyun reg = ~(MII_BCM63XX_IR_DUPLEX |
56*4882a593Smuzhiyun MII_BCM63XX_IR_SPEED |
57*4882a593Smuzhiyun MII_BCM63XX_IR_LINK) |
58*4882a593Smuzhiyun MII_BCM63XX_IR_EN;
59*4882a593Smuzhiyun return phy_write(phydev, MII_BCM63XX_IR, reg);
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun static struct phy_driver bcm63xx_driver[] = {
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun .phy_id = 0x00406000,
65*4882a593Smuzhiyun .phy_id_mask = 0xfffffc00,
66*4882a593Smuzhiyun .name = "Broadcom BCM63XX (1)",
67*4882a593Smuzhiyun /* PHY_BASIC_FEATURES */
68*4882a593Smuzhiyun .flags = PHY_IS_INTERNAL,
69*4882a593Smuzhiyun .config_init = bcm63xx_config_init,
70*4882a593Smuzhiyun .ack_interrupt = bcm_phy_ack_intr,
71*4882a593Smuzhiyun .config_intr = bcm63xx_config_intr,
72*4882a593Smuzhiyun }, {
73*4882a593Smuzhiyun /* same phy as above, with just a different OUI */
74*4882a593Smuzhiyun .phy_id = 0x002bdc00,
75*4882a593Smuzhiyun .phy_id_mask = 0xfffffc00,
76*4882a593Smuzhiyun .name = "Broadcom BCM63XX (2)",
77*4882a593Smuzhiyun /* PHY_BASIC_FEATURES */
78*4882a593Smuzhiyun .flags = PHY_IS_INTERNAL,
79*4882a593Smuzhiyun .config_init = bcm63xx_config_init,
80*4882a593Smuzhiyun .ack_interrupt = bcm_phy_ack_intr,
81*4882a593Smuzhiyun .config_intr = bcm63xx_config_intr,
82*4882a593Smuzhiyun } };
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun module_phy_driver(bcm63xx_driver);
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
87*4882a593Smuzhiyun { 0x00406000, 0xfffffc00 },
88*4882a593Smuzhiyun { 0x002bdc00, 0xfffffc00 },
89*4882a593Smuzhiyun { }
90*4882a593Smuzhiyun };
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
93