1a2443fd1SAndrew Lunn // SPDX-License-Identifier: GPL-2.0+
209bb9aa0SMaxime Bizon /*
309bb9aa0SMaxime Bizon * Driver for Broadcom 63xx SOCs integrated PHYs
409bb9aa0SMaxime Bizon */
5a1cba561SArun Parameswaran #include "bcm-phy-lib.h"
609bb9aa0SMaxime Bizon #include <linux/module.h>
709bb9aa0SMaxime Bizon #include <linux/phy.h>
809bb9aa0SMaxime Bizon
909bb9aa0SMaxime Bizon #define MII_BCM63XX_IR 0x1a /* interrupt register */
1009bb9aa0SMaxime Bizon #define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
1109bb9aa0SMaxime Bizon #define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
1209bb9aa0SMaxime Bizon #define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
1309bb9aa0SMaxime Bizon #define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
1409bb9aa0SMaxime Bizon #define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
1509bb9aa0SMaxime Bizon
1609bb9aa0SMaxime Bizon MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
1709bb9aa0SMaxime Bizon MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
1809bb9aa0SMaxime Bizon MODULE_LICENSE("GPL");
1909bb9aa0SMaxime Bizon
bcm63xx_config_intr(struct phy_device * phydev)20cd33b3e0SDaniel Gonzalez Cabanelas static int bcm63xx_config_intr(struct phy_device *phydev)
21cd33b3e0SDaniel Gonzalez Cabanelas {
22cd33b3e0SDaniel Gonzalez Cabanelas int reg, err;
23cd33b3e0SDaniel Gonzalez Cabanelas
24cd33b3e0SDaniel Gonzalez Cabanelas reg = phy_read(phydev, MII_BCM63XX_IR);
25cd33b3e0SDaniel Gonzalez Cabanelas if (reg < 0)
26cd33b3e0SDaniel Gonzalez Cabanelas return reg;
27cd33b3e0SDaniel Gonzalez Cabanelas
28*15772e4dSIoana Ciornei if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
29*15772e4dSIoana Ciornei err = bcm_phy_ack_intr(phydev);
30*15772e4dSIoana Ciornei if (err)
31*15772e4dSIoana Ciornei return err;
32cd33b3e0SDaniel Gonzalez Cabanelas
33*15772e4dSIoana Ciornei reg &= ~MII_BCM63XX_IR_GMASK;
34cd33b3e0SDaniel Gonzalez Cabanelas err = phy_write(phydev, MII_BCM63XX_IR, reg);
35*15772e4dSIoana Ciornei } else {
36*15772e4dSIoana Ciornei reg |= MII_BCM63XX_IR_GMASK;
37*15772e4dSIoana Ciornei err = phy_write(phydev, MII_BCM63XX_IR, reg);
38*15772e4dSIoana Ciornei if (err)
39*15772e4dSIoana Ciornei return err;
40*15772e4dSIoana Ciornei
41*15772e4dSIoana Ciornei err = bcm_phy_ack_intr(phydev);
42*15772e4dSIoana Ciornei }
43*15772e4dSIoana Ciornei
44cd33b3e0SDaniel Gonzalez Cabanelas return err;
45cd33b3e0SDaniel Gonzalez Cabanelas }
46cd33b3e0SDaniel Gonzalez Cabanelas
bcm63xx_config_init(struct phy_device * phydev)4709bb9aa0SMaxime Bizon static int bcm63xx_config_init(struct phy_device *phydev)
4809bb9aa0SMaxime Bizon {
4909bb9aa0SMaxime Bizon int reg, err;
5009bb9aa0SMaxime Bizon
51719655a1SAndrew Lunn /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
523c1bcc86SAndrew Lunn linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
53719655a1SAndrew Lunn
5409bb9aa0SMaxime Bizon reg = phy_read(phydev, MII_BCM63XX_IR);
5509bb9aa0SMaxime Bizon if (reg < 0)
5609bb9aa0SMaxime Bizon return reg;
5709bb9aa0SMaxime Bizon
5809bb9aa0SMaxime Bizon /* Mask interrupts globally. */
5909bb9aa0SMaxime Bizon reg |= MII_BCM63XX_IR_GMASK;
6009bb9aa0SMaxime Bizon err = phy_write(phydev, MII_BCM63XX_IR, reg);
6109bb9aa0SMaxime Bizon if (err < 0)
6209bb9aa0SMaxime Bizon return err;
6309bb9aa0SMaxime Bizon
6409bb9aa0SMaxime Bizon /* Unmask events we are interested in */
6509bb9aa0SMaxime Bizon reg = ~(MII_BCM63XX_IR_DUPLEX |
6609bb9aa0SMaxime Bizon MII_BCM63XX_IR_SPEED |
6709bb9aa0SMaxime Bizon MII_BCM63XX_IR_LINK) |
6809bb9aa0SMaxime Bizon MII_BCM63XX_IR_EN;
69a25cc43eSSrinivas Kandagatla return phy_write(phydev, MII_BCM63XX_IR, reg);
7009bb9aa0SMaxime Bizon }
7109bb9aa0SMaxime Bizon
72d5bf9071SChristian Hohnstaedt static struct phy_driver bcm63xx_driver[] = {
73d5bf9071SChristian Hohnstaedt {
7409bb9aa0SMaxime Bizon .phy_id = 0x00406000,
7509bb9aa0SMaxime Bizon .phy_id_mask = 0xfffffc00,
7609bb9aa0SMaxime Bizon .name = "Broadcom BCM63XX (1)",
77dcdecdcfSHeiner Kallweit /* PHY_BASIC_FEATURES */
78a4307c0eSHeiner Kallweit .flags = PHY_IS_INTERNAL,
7909bb9aa0SMaxime Bizon .config_init = bcm63xx_config_init,
80cd33b3e0SDaniel Gonzalez Cabanelas .config_intr = bcm63xx_config_intr,
814567d5c3SIoana Ciornei .handle_interrupt = bcm_phy_handle_interrupt,
82d5bf9071SChristian Hohnstaedt }, {
8309bb9aa0SMaxime Bizon /* same phy as above, with just a different OUI */
8409bb9aa0SMaxime Bizon .phy_id = 0x002bdc00,
8509bb9aa0SMaxime Bizon .phy_id_mask = 0xfffffc00,
8643de81b0SJonas Gorski .name = "Broadcom BCM63XX (2)",
87dcdecdcfSHeiner Kallweit /* PHY_BASIC_FEATURES */
88a4307c0eSHeiner Kallweit .flags = PHY_IS_INTERNAL,
8909bb9aa0SMaxime Bizon .config_init = bcm63xx_config_init,
90cd33b3e0SDaniel Gonzalez Cabanelas .config_intr = bcm63xx_config_intr,
914567d5c3SIoana Ciornei .handle_interrupt = bcm_phy_handle_interrupt,
92d5bf9071SChristian Hohnstaedt } };
9309bb9aa0SMaxime Bizon
9450fd7150SJohan Hovold module_phy_driver(bcm63xx_driver);
954e4f10f6SDavid Woodhouse
96cf93c945SUwe Kleine-König static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
974e4f10f6SDavid Woodhouse { 0x00406000, 0xfffffc00 },
984e4f10f6SDavid Woodhouse { 0x002bdc00, 0xfffffc00 },
994e4f10f6SDavid Woodhouse { }
1004e4f10f6SDavid Woodhouse };
1014e4f10f6SDavid Woodhouse
1020de8655aSFlorian Fainelli MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
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