Add a driver for Renesas uPD60620 and uPD60620A PHYs (812b5ca7) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/net/phy/Kconfig

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	@@ -366,6 +366,11 @@ config REALTEK_PHY
	---help---		---help---
	Supports the Realtek 821x PHY.		Supports the Realtek 821x PHY.

			config RENESAS_PHY
			tristate "Driver for Renesas PHYs"
			---help---
			Supports the Renesas PHYs uPD60620 and uPD60620A.

	config ROCKCHIP_PHY		config ROCKCHIP_PHY
	tristate "Driver for Rockchip Ethernet PHYs"		tristate "Driver for Rockchip Ethernet PHYs"
	---help---		---help---

drivers/net/phy/Makefile

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	@@ -72,6 +72,7 @@ obj-$(CONFIG_MICROSEMI_PHY) += mscc.o
	obj-$(CONFIG_NATIONAL_PHY) += national.o		obj-$(CONFIG_NATIONAL_PHY) += national.o
	obj-$(CONFIG_QSEMI_PHY) += qsemi.o		obj-$(CONFIG_QSEMI_PHY) += qsemi.o
	obj-$(CONFIG_REALTEK_PHY) += realtek.o		obj-$(CONFIG_REALTEK_PHY) += realtek.o
			obj-$(CONFIG_RENESAS_PHY) += uPD60620.o
	obj-$(CONFIG_ROCKCHIP_PHY) += rockchip.o		obj-$(CONFIG_ROCKCHIP_PHY) += rockchip.o
	obj-$(CONFIG_SMSC_PHY) += smsc.o		obj-$(CONFIG_SMSC_PHY) += smsc.o
	obj-$(CONFIG_STE10XP) += ste10Xp.o		obj-$(CONFIG_STE10XP) += ste10Xp.o

drivers/net/phy/uPD60620.c

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			/*
			* Driver for the Renesas PHY uPD60620.
			*
			* Copyright (C) 2015 Softing Industrial Automation GmbH
			*
			* This program is free software; you can redistribute it and/or modify
			* it under the terms of the GNU General Public License as published by
			* the Free Software Foundation; either version 2 of the License, or
			* (at your option) any later version.
			*
			*/

			#include <linux/kernel.h>
			#include <linux/module.h>
			#include <linux/phy.h>

			#define UPD60620_PHY_ID 0xb8242824

			/* Extended Registers and values */
			/* PHY Special Control/Status */
			#define PHY_PHYSCR 0x1F /* PHY.31 */
			#define PHY_PHYSCR_10MB 0x0004 /* PHY speed = 10mb */
			#define PHY_PHYSCR_100MB 0x0008 /* PHY speed = 100mb */
			#define PHY_PHYSCR_DUPLEX 0x0010 /* PHY Duplex */

			/* PHY Special Modes */
			#define PHY_SPM 0x12 /* PHY.18 */

			/* Init PHY */

			static int upd60620_config_init(struct phy_device *phydev)
			{
			/* Enable support for passive HUBs (could be a strap option) */
			/* PHYMODE: All speeds, HD in parallel detect */
			return phy_write(phydev, PHY_SPM, 0x0180 \| phydev->mdio.addr);
			}

			/* Get PHY status from common registers */

			static int upd60620_read_status(struct phy_device *phydev)
			{
			int phy_state;

			/* Read negotiated state */
			phy_state = phy_read(phydev, MII_BMSR);
			if (phy_state < 0)
			return phy_state;

			phydev->link = 0;
			phydev->lp_advertising = 0;
			phydev->pause = 0;
			phydev->asym_pause = 0;

			if (phy_state & (BMSR_ANEGCOMPLETE \| BMSR_LSTATUS)) {
			phy_state = phy_read(phydev, PHY_PHYSCR);
			if (phy_state < 0)
			return phy_state;

			if (phy_state & (PHY_PHYSCR_10MB \| PHY_PHYSCR_100MB)) {
			phydev->link = 1;
			phydev->speed = SPEED_10;
			phydev->duplex = DUPLEX_HALF;

			if (phy_state & PHY_PHYSCR_100MB)
			phydev->speed = SPEED_100;
			if (phy_state & PHY_PHYSCR_DUPLEX)
			phydev->duplex = DUPLEX_FULL;

			phy_state = phy_read(phydev, MII_LPA);
			if (phy_state < 0)
			return phy_state;

			phydev->lp_advertising
			= mii_lpa_to_ethtool_lpa_t(phy_state);

			if (phydev->duplex == DUPLEX_FULL) {
			if (phy_state & LPA_PAUSE_CAP)
			phydev->pause = 1;
			if (phy_state & LPA_PAUSE_ASYM)
			phydev->asym_pause = 1;
			}
			}
			}
			return 0;
			}

			MODULE_DESCRIPTION("Renesas uPD60620 PHY driver");
			MODULE_AUTHOR("Bernd Edlinger <bernd.edlinger@hotmail.de>");
			MODULE_LICENSE("GPL");

			static struct phy_driver upd60620_driver[1] = { {
			.phy_id = UPD60620_PHY_ID,
			.phy_id_mask = 0xfffffffe,
			.name = "Renesas uPD60620",
			.features = PHY_BASIC_FEATURES,
			.flags = 0,
			.config_init = upd60620_config_init,
			.config_aneg = genphy_config_aneg,
			.read_status = upd60620_read_status,
			} };

			module_phy_driver(upd60620_driver);

			static struct mdio_device_id __maybe_unused upd60620_tbl[] = {
			{ UPD60620_PHY_ID, 0xfffffffe },
			{ }
			};

			MODULE_DEVICE_TABLE(mdio, upd60620_tbl);