Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Driver for Teranetics PHY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Author: Shaohui Xie <Shaohui.Xie@freescale.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright 2015 Freescale Semiconductor, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mii.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/ethtool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) MODULE_DESCRIPTION("Teranetics PHY driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define PHY_ID_TN2020	0x00a19410
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define MDIO_PHYXS_LNSTAT_SYNC0	0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MDIO_PHYXS_LNSTAT_SYNC1	0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MDIO_PHYXS_LNSTAT_SYNC2	0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define MDIO_PHYXS_LNSTAT_SYNC3	0x0008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define MDIO_PHYXS_LNSTAT_ALIGN 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define MDIO_PHYXS_LANE_READY	(MDIO_PHYXS_LNSTAT_SYNC0 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 				MDIO_PHYXS_LNSTAT_SYNC1 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 				MDIO_PHYXS_LNSTAT_SYNC2 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 				MDIO_PHYXS_LNSTAT_SYNC3 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 				MDIO_PHYXS_LNSTAT_ALIGN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int teranetics_aneg_done(struct phy_device *phydev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/* auto negotiation state can only be checked when using copper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * port, if using fiber port, just lie it's done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		return genphy_c45_aneg_done(phydev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int teranetics_read_status(struct phy_device *phydev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	int reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	phydev->link = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	phydev->speed = SPEED_10000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	phydev->duplex = DUPLEX_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		reg = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		if (reg < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		    !((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 			phydev->link = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 			phydev->link = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int teranetics_match_phy_device(struct phy_device *phydev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	return phydev->c45_ids.device_ids[3] == PHY_ID_TN2020;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static struct phy_driver teranetics_driver[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	.phy_id		= PHY_ID_TN2020,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	.phy_id_mask	= 0xffffffff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	.name		= "Teranetics TN2020",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	.features       = PHY_10GBIT_FEATURES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	.aneg_done	= teranetics_aneg_done,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	.config_aneg    = gen10g_config_aneg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 	.read_status	= teranetics_read_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 	.match_phy_device = teranetics_match_phy_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) module_phy_driver(teranetics_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static struct mdio_device_id __maybe_unused teranetics_tbl[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 	{ PHY_ID_TN2020, 0xffffffff },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) MODULE_DEVICE_TABLE(mdio, teranetics_tbl);