microchip_t1: Add driver for Microchip LAN87XX T1 PHYs (3e50d2da) · Commits · 戴 / test

drivers/net/phy/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -360,6 +360,11 @@ config MICROCHIP_PHY
		help
		Supports the LAN88XX PHYs.

		config MICROCHIP_T1_PHY
		tristate "Microchip T1 PHYs"
		---help---
		Supports the LAN87XX PHYs.

		config MICROSEMI_PHY
		tristate "Microsemi PHYs"
		---help---

drivers/net/phy/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -71,6 +71,7 @@ obj-$(CONFIG_MESON_GXL_PHY) += meson-gxl.o
		obj-$(CONFIG_MICREL_KS8995MA) += spi_ks8995.o
		obj-$(CONFIG_MICREL_PHY) += micrel.o
		obj-$(CONFIG_MICROCHIP_PHY) += microchip.o
		obj-$(CONFIG_MICROCHIP_T1_PHY) += microchip_t1.o
		obj-$(CONFIG_MICROSEMI_PHY) += mscc.o
		obj-$(CONFIG_NATIONAL_PHY) += national.o
		obj-$(CONFIG_QSEMI_PHY) += qsemi.o

drivers/net/phy/microchip_t1.c

0 → 100644

+74 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0
		// Copyright (C) 2018 Microchip Technology

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

		/* Interrupt Source Register */
		#define LAN87XX_INTERRUPT_SOURCE (0x18)

		/* Interrupt Mask Register */
		#define LAN87XX_INTERRUPT_MASK (0x19)
		#define LAN87XX_MASK_LINK_UP (0x0004)
		#define LAN87XX_MASK_LINK_DOWN (0x0002)

		#define DRIVER_AUTHOR "Nisar Sayed <nisar.sayed@microchip.com>"
		#define DRIVER_DESC "Microchip LAN87XX T1 PHY driver"

		static int lan87xx_phy_config_intr(struct phy_device *phydev)
		{
		int rc, val = 0;

		if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
		/* unmask all source and clear them before enable */
		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, 0x7FFF);
		rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);
		val = LAN87XX_MASK_LINK_UP \| LAN87XX_MASK_LINK_DOWN;
		}

		rc = phy_write(phydev, LAN87XX_INTERRUPT_MASK, val);

		return rc < 0 ? rc : 0;
		}

		static int lan87xx_phy_ack_interrupt(struct phy_device *phydev)
		{
		int rc = phy_read(phydev, LAN87XX_INTERRUPT_SOURCE);

		return rc < 0 ? rc : 0;
		}

		static struct phy_driver microchip_t1_phy_driver[] = {
		{
		.phy_id = 0x0007c150,
		.phy_id_mask = 0xfffffff0,
		.name = "Microchip LAN87xx T1",

		.features = SUPPORTED_100baseT_Full,
		.flags = PHY_HAS_INTERRUPT,

		.config_init = genphy_config_init,
		.config_aneg = genphy_config_aneg,

		.ack_interrupt = lan87xx_phy_ack_interrupt,
		.config_intr = lan87xx_phy_config_intr,

		.suspend = genphy_suspend,
		.resume = genphy_resume,
		}
		};

		module_phy_driver(microchip_t1_phy_driver);

		static struct mdio_device_id __maybe_unused microchip_t1_tbl[] = {
		{ 0x0007c150, 0xfffffff0 },
		{ }
		};

		MODULE_DEVICE_TABLE(mdio, microchip_t1_tbl);

		MODULE_AUTHOR(DRIVER_AUTHOR);
		MODULE_DESCRIPTION(DRIVER_DESC);
		MODULE_LICENSE("GPL");

Admin message