drivers/net/ethernet/mscc/ocelot_vsc7514.c - linux - Git at Google

 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
 /*
  * Microsemi Ocelot Switch driver
  *
  * Copyright (c) 2017 Microsemi Corporation
  */
 #include <linux/dsa/ocelot.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/of_net.h>
 #include <linux/netdevice.h>
 #include <linux/phylink.h>
 #include <linux/of.h>
 #include <linux/of_mdio.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/syscon.h>
 #include <linux/skbuff.h>
 #include <net/switchdev.h>

 #include <soc/mscc/ocelot.h>
 #include <soc/mscc/ocelot_vcap.h>
 #include <soc/mscc/vsc7514_regs.h>
 #include "ocelot_fdma.h"
 #include "ocelot.h"

 #define VSC7514_VCAP_POLICER_BASE			128
 #define VSC7514_VCAP_POLICER_MAX			191

 static int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops)
 {
 	int ret;

 	ocelot->map = vsc7514_regmap;
 	ocelot->num_mact_rows = 1024;
 	ocelot->ops = ops;

 	ret = ocelot_regfields_init(ocelot, vsc7514_regfields);
 	if (ret)
 		return ret;

 	ocelot_pll5_init(ocelot);

 	eth_random_addr(ocelot->base_mac);
 	ocelot->base_mac[5] &= 0xf0;

 	return 0;
 }

 static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg)
 {
 	struct ocelot *ocelot = arg;
 	int grp = 0, err;

 	ocelot_lock_xtr_grp(ocelot, grp);

 	while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) {
 		struct sk_buff *skb;

 		err = ocelot_xtr_poll_frame(ocelot, grp, &skb);
 		if (err)
 			goto out;

 		skb->dev->stats.rx_bytes += skb->len;
 		skb->dev->stats.rx_packets++;

 		if (!skb_defer_rx_timestamp(skb))
 			netif_rx(skb);
 	}

 out:
 	if (err < 0)
 		ocelot_drain_cpu_queue(ocelot, 0);

 	ocelot_unlock_xtr_grp(ocelot, grp);

 	return IRQ_HANDLED;
 }

 static irqreturn_t ocelot_ptp_rdy_irq_handler(int irq, void *arg)
 {
 	struct ocelot *ocelot = arg;

 	ocelot_get_txtstamp(ocelot);

 	return IRQ_HANDLED;
 }

 static const struct of_device_id mscc_ocelot_match[] = {
 	{ .compatible = "mscc,vsc7514-switch" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mscc_ocelot_match);

 static const struct ocelot_ops ocelot_ops = {
 	.reset			= ocelot_reset,
 	.wm_enc			= ocelot_wm_enc,
 	.wm_dec			= ocelot_wm_dec,
 	.wm_stat		= ocelot_wm_stat,
 	.port_to_netdev		= ocelot_port_to_netdev,
 	.netdev_to_port		= ocelot_netdev_to_port,
 };

 static struct ptp_clock_info ocelot_ptp_clock_info = {
 	.owner		= THIS_MODULE,
 	.name		= "ocelot ptp",
 	.max_adj	= 0x7fffffff,
 	.n_alarm	= 0,
 	.n_ext_ts	= 0,
 	.n_per_out	= OCELOT_PTP_PINS_NUM,
 	.n_pins		= OCELOT_PTP_PINS_NUM,
 	.pps		= 0,
 	.gettime64	= ocelot_ptp_gettime64,
 	.settime64	= ocelot_ptp_settime64,
 	.adjtime	= ocelot_ptp_adjtime,
 	.adjfine	= ocelot_ptp_adjfine,
 	.verify		= ocelot_ptp_verify,
 	.enable		= ocelot_ptp_enable,
 };

 static void mscc_ocelot_teardown_devlink_ports(struct ocelot *ocelot)
 {
 	int port;

 	for (port = 0; port < ocelot->num_phys_ports; port++)
 		ocelot_port_devlink_teardown(ocelot, port);
 }

 static void mscc_ocelot_release_ports(struct ocelot *ocelot)
 {
 	int port;

 	for (port = 0; port < ocelot->num_phys_ports; port++) {
 		struct ocelot_port *ocelot_port;

 		ocelot_port = ocelot->ports[port];
 		if (!ocelot_port)
 			continue;

 		ocelot_deinit_port(ocelot, port);
 		ocelot_release_port(ocelot_port);
 	}
 }

 static int mscc_ocelot_init_ports(struct platform_device *pdev,
 				  struct device_node *ports)
 {
 	struct ocelot *ocelot = platform_get_drvdata(pdev);
 	u32 devlink_ports_registered = 0;
 	struct device_node *portnp;
 	int port, err;
 	u32 reg;

 	ocelot->ports = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports,
 				     sizeof(struct ocelot_port *), GFP_KERNEL);
 	if (!ocelot->ports)
 		return -ENOMEM;

 	ocelot->devlink_ports = devm_kcalloc(ocelot->dev,
 					     ocelot->num_phys_ports,
 					     sizeof(*ocelot->devlink_ports),
 					     GFP_KERNEL);
 	if (!ocelot->devlink_ports)
 		return -ENOMEM;

 	for_each_available_child_of_node(ports, portnp) {
 		struct regmap *target;
 		struct resource *res;
 		char res_name[8];

 		if (of_property_read_u32(portnp, "reg", &reg))
 			continue;

 		port = reg;
 		if (port < 0 || port >= ocelot->num_phys_ports) {
 			dev_err(ocelot->dev,
 				"invalid port number: %d >= %d\n", port,
 				ocelot->num_phys_ports);
 			continue;
 		}

 		snprintf(res_name, sizeof(res_name), "port%d", port);

 		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 						   res_name);
 		target = ocelot_regmap_init(ocelot, res);
 		if (IS_ERR(target)) {
 			err = PTR_ERR(target);
 			of_node_put(portnp);
 			goto out_teardown;
 		}

 		err = ocelot_port_devlink_init(ocelot, port,
 					       DEVLINK_PORT_FLAVOUR_PHYSICAL);
 		if (err) {
 			of_node_put(portnp);
 			goto out_teardown;
 		}

 		err = ocelot_probe_port(ocelot, port, target, portnp);
 		if (err) {
 			ocelot_port_devlink_teardown(ocelot, port);
 			continue;
 		}

 		devlink_ports_registered |= BIT(port);
 	}

 	/* Initialize unused devlink ports at the end */
 	for (port = 0; port < ocelot->num_phys_ports; port++) {
 		if (devlink_ports_registered & BIT(port))
 			continue;

 		err = ocelot_port_devlink_init(ocelot, port,
 					       DEVLINK_PORT_FLAVOUR_UNUSED);
 		if (err)
 			goto out_teardown;

 		devlink_ports_registered |= BIT(port);
 	}

 	return 0;

 out_teardown:
 	/* Unregister the network interfaces */
 	mscc_ocelot_release_ports(ocelot);
 	/* Tear down devlink ports for the registered network interfaces */
 	for (port = 0; port < ocelot->num_phys_ports; port++) {
 		if (devlink_ports_registered & BIT(port))
 			ocelot_port_devlink_teardown(ocelot, port);
 	}
 	return err;
 }

 static int mscc_ocelot_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	int err, irq_xtr, irq_ptp_rdy;
 	struct device_node *ports;
 	struct devlink *devlink;
 	struct ocelot *ocelot;
 	struct regmap *hsio;
 	unsigned int i;

 	struct {
 		enum ocelot_target id;
 		char *name;
 		u8 optional:1;
 	} io_target[] = {
 		{ SYS, "sys" },
 		{ REW, "rew" },
 		{ QSYS, "qsys" },
 		{ ANA, "ana" },
 		{ QS, "qs" },
 		{ S0, "s0" },
 		{ S1, "s1" },
 		{ S2, "s2" },
 		{ PTP, "ptp", 1 },
 		{ FDMA, "fdma", 1 },
 	};

 	if (!np && !pdev->dev.platform_data)
 		return -ENODEV;

 	devlink =
 		devlink_alloc(&ocelot_devlink_ops, sizeof(*ocelot), &pdev->dev);
 	if (!devlink)
 		return -ENOMEM;

 	ocelot = devlink_priv(devlink);
 	ocelot->devlink = priv_to_devlink(ocelot);
 	platform_set_drvdata(pdev, ocelot);
 	ocelot->dev = &pdev->dev;

 	for (i = 0; i < ARRAY_SIZE(io_target); i++) {
 		struct regmap *target;
 		struct resource *res;

 		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 						   io_target[i].name);

 		target = ocelot_regmap_init(ocelot, res);
 		if (IS_ERR(target)) {
 			if (io_target[i].optional) {
 				ocelot->targets[io_target[i].id] = NULL;
 				continue;
 			}
 			err = PTR_ERR(target);
 			goto out_free_devlink;
 		}

 		ocelot->targets[io_target[i].id] = target;
 	}

 	if (ocelot->targets[FDMA])
 		ocelot_fdma_init(pdev, ocelot);

 	hsio = syscon_regmap_lookup_by_compatible("mscc,ocelot-hsio");
 	if (IS_ERR(hsio)) {
 		dev_err(&pdev->dev, "missing hsio syscon\n");
 		err = PTR_ERR(hsio);
 		goto out_free_devlink;
 	}

 	ocelot->targets[HSIO] = hsio;

 	err = ocelot_chip_init(ocelot, &ocelot_ops);
 	if (err)
 		goto out_free_devlink;

 	irq_xtr = platform_get_irq_byname(pdev, "xtr");
 	if (irq_xtr < 0) {
 		err = irq_xtr;
 		goto out_free_devlink;
 	}

 	err = devm_request_threaded_irq(&pdev->dev, irq_xtr, NULL,
 					ocelot_xtr_irq_handler, IRQF_ONESHOT,
 					"frame extraction", ocelot);
 	if (err)
 		goto out_free_devlink;

 	irq_ptp_rdy = platform_get_irq_byname(pdev, "ptp_rdy");
 	if (irq_ptp_rdy > 0 && ocelot->targets[PTP]) {
 		err = devm_request_threaded_irq(&pdev->dev, irq_ptp_rdy, NULL,
 						ocelot_ptp_rdy_irq_handler,
 						IRQF_ONESHOT, "ptp ready",
 						ocelot);
 		if (err)
 			goto out_free_devlink;

 		/* Both the PTP interrupt and the PTP bank are available */
 		ocelot->ptp = 1;
 	}

 	ports = of_get_child_by_name(np, "ethernet-ports");
 	if (!ports) {
 		dev_err(ocelot->dev, "no ethernet-ports child node found\n");
 		err = -ENODEV;
 		goto out_free_devlink;
 	}

 	ocelot->num_phys_ports = of_get_child_count(ports);
 	ocelot->num_flooding_pgids = 1;

 	ocelot->vcap = vsc7514_vcap_props;

 	ocelot->vcap_pol.base = VSC7514_VCAP_POLICER_BASE;
 	ocelot->vcap_pol.max = VSC7514_VCAP_POLICER_MAX;

 	ocelot->npi = -1;

 	err = ocelot_init(ocelot);
 	if (err)
 		goto out_put_ports;

 	err = mscc_ocelot_init_ports(pdev, ports);
 	if (err)
 		goto out_ocelot_devlink_unregister;

 	if (ocelot->fdma)
 		ocelot_fdma_start(ocelot);

 	err = ocelot_devlink_sb_register(ocelot);
 	if (err)
 		goto out_ocelot_release_ports;

 	if (ocelot->ptp) {
 		err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
 		if (err) {
 			dev_err(ocelot->dev,
 				"Timestamp initialization failed\n");
 			ocelot->ptp = 0;
 		}
 	}

 	register_netdevice_notifier(&ocelot_netdevice_nb);
 	register_switchdev_notifier(&ocelot_switchdev_nb);
 	register_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);

 	of_node_put(ports);
 	devlink_register(devlink);

 	dev_info(&pdev->dev, "Ocelot switch probed\n");

 	return 0;

 out_ocelot_release_ports:
 	mscc_ocelot_release_ports(ocelot);
 	mscc_ocelot_teardown_devlink_ports(ocelot);
 out_ocelot_devlink_unregister:
 	ocelot_deinit(ocelot);
 out_put_ports:
 	of_node_put(ports);
 out_free_devlink:
 	devlink_free(devlink);
 	return err;
 }

 static void mscc_ocelot_remove(struct platform_device *pdev)
 {
 	struct ocelot *ocelot = platform_get_drvdata(pdev);

 	if (ocelot->fdma)
 		ocelot_fdma_deinit(ocelot);
 	devlink_unregister(ocelot->devlink);
 	ocelot_deinit_timestamp(ocelot);
 	ocelot_devlink_sb_unregister(ocelot);
 	mscc_ocelot_release_ports(ocelot);
 	mscc_ocelot_teardown_devlink_ports(ocelot);
 	ocelot_deinit(ocelot);
 	unregister_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);
 	unregister_switchdev_notifier(&ocelot_switchdev_nb);
 	unregister_netdevice_notifier(&ocelot_netdevice_nb);
 	devlink_free(ocelot->devlink);
 }

 static struct platform_driver mscc_ocelot_driver = {
 	.probe = mscc_ocelot_probe,
 	.remove_new = mscc_ocelot_remove,
 	.driver = {
 		.name = "ocelot-switch",
 		.of_match_table = mscc_ocelot_match,
 	},
 };

 module_platform_driver(mscc_ocelot_driver);

 MODULE_DESCRIPTION("Microsemi Ocelot switch driver");
 MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@bootlin.com>");
 MODULE_LICENSE("Dual MIT/GPL");
	// SPDX-License-Identifier: (GPL-2.0 OR MIT)
	/*
	* Microsemi Ocelot Switch driver
	*
	* Copyright (c) 2017 Microsemi Corporation
	*/
	#include <linux/dsa/ocelot.h>
	#include <linux/interrupt.h>
	#include <linux/module.h>
	#include <linux/of_net.h>
	#include <linux/netdevice.h>
	#include <linux/phylink.h>
	#include <linux/of.h>
	#include <linux/of_mdio.h>
	#include <linux/platform_device.h>
	#include <linux/mfd/syscon.h>
	#include <linux/skbuff.h>
	#include <net/switchdev.h>

	#include <soc/mscc/ocelot.h>
	#include <soc/mscc/ocelot_vcap.h>
	#include <soc/mscc/vsc7514_regs.h>
	#include "ocelot_fdma.h"
	#include "ocelot.h"

	#define VSC7514_VCAP_POLICER_BASE 128
	#define VSC7514_VCAP_POLICER_MAX 191

	static int ocelot_chip_init(struct ocelot ocelot, const struct ocelot_ops ops)
	{
	int ret;

	ocelot->map = vsc7514_regmap;
	ocelot->num_mact_rows = 1024;
	ocelot->ops = ops;

	ret = ocelot_regfields_init(ocelot, vsc7514_regfields);
	if (ret)
	return ret;

	ocelot_pll5_init(ocelot);

	eth_random_addr(ocelot->base_mac);
	ocelot->base_mac[5] &= 0xf0;

	return 0;
	}

	static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg)
	{
	struct ocelot *ocelot = arg;
	int grp = 0, err;

	ocelot_lock_xtr_grp(ocelot, grp);

	while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) {
	struct sk_buff *skb;

	err = ocelot_xtr_poll_frame(ocelot, grp, &skb);
	if (err)
	goto out;

	skb->dev->stats.rx_bytes += skb->len;
	skb->dev->stats.rx_packets++;

	if (!skb_defer_rx_timestamp(skb))
	netif_rx(skb);
	}

	out:
	if (err < 0)
	ocelot_drain_cpu_queue(ocelot, 0);

	ocelot_unlock_xtr_grp(ocelot, grp);

	return IRQ_HANDLED;
	}

	static irqreturn_t ocelot_ptp_rdy_irq_handler(int irq, void *arg)
	{
	struct ocelot *ocelot = arg;

	ocelot_get_txtstamp(ocelot);

	return IRQ_HANDLED;
	}

	static const struct of_device_id mscc_ocelot_match[] = {
	{ .compatible = "mscc,vsc7514-switch" },
	{ }
	};
	MODULE_DEVICE_TABLE(of, mscc_ocelot_match);

	static const struct ocelot_ops ocelot_ops = {
	.reset = ocelot_reset,
	.wm_enc = ocelot_wm_enc,
	.wm_dec = ocelot_wm_dec,
	.wm_stat = ocelot_wm_stat,
	.port_to_netdev = ocelot_port_to_netdev,
	.netdev_to_port = ocelot_netdev_to_port,
	};

	static struct ptp_clock_info ocelot_ptp_clock_info = {
	.owner = THIS_MODULE,
	.name = "ocelot ptp",
	.max_adj = 0x7fffffff,
	.n_alarm = 0,
	.n_ext_ts = 0,
	.n_per_out = OCELOT_PTP_PINS_NUM,
	.n_pins = OCELOT_PTP_PINS_NUM,
	.pps = 0,
	.gettime64 = ocelot_ptp_gettime64,
	.settime64 = ocelot_ptp_settime64,
	.adjtime = ocelot_ptp_adjtime,
	.adjfine = ocelot_ptp_adjfine,
	.verify = ocelot_ptp_verify,
	.enable = ocelot_ptp_enable,
	};

	static void mscc_ocelot_teardown_devlink_ports(struct ocelot *ocelot)
	{
	int port;

	for (port = 0; port < ocelot->num_phys_ports; port++)
	ocelot_port_devlink_teardown(ocelot, port);
	}

	static void mscc_ocelot_release_ports(struct ocelot *ocelot)
	{
	int port;

	for (port = 0; port < ocelot->num_phys_ports; port++) {
	struct ocelot_port *ocelot_port;

	ocelot_port = ocelot->ports[port];
	if (!ocelot_port)
	continue;

	ocelot_deinit_port(ocelot, port);
	ocelot_release_port(ocelot_port);
	}
	}

	static int mscc_ocelot_init_ports(struct platform_device *pdev,
	struct device_node *ports)
	{
	struct ocelot *ocelot = platform_get_drvdata(pdev);
	u32 devlink_ports_registered = 0;
	struct device_node *portnp;
	int port, err;
	u32 reg;

	ocelot->ports = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports,
	sizeof(struct ocelot_port *), GFP_KERNEL);
	if (!ocelot->ports)
	return -ENOMEM;

	ocelot->devlink_ports = devm_kcalloc(ocelot->dev,
	ocelot->num_phys_ports,
	sizeof(*ocelot->devlink_ports),
	GFP_KERNEL);
	if (!ocelot->devlink_ports)
	return -ENOMEM;

	for_each_available_child_of_node(ports, portnp) {
	struct regmap *target;
	struct resource *res;
	char res_name[8];

	if (of_property_read_u32(portnp, "reg", &reg))
	continue;

	port = reg;
	if (port < 0 \|\| port >= ocelot->num_phys_ports) {
	dev_err(ocelot->dev,
	"invalid port number: %d >= %d\n", port,
	ocelot->num_phys_ports);
	continue;
	}

	snprintf(res_name, sizeof(res_name), "port%d", port);

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
	res_name);
	target = ocelot_regmap_init(ocelot, res);
	if (IS_ERR(target)) {
	err = PTR_ERR(target);
	of_node_put(portnp);
	goto out_teardown;
	}

	err = ocelot_port_devlink_init(ocelot, port,
	DEVLINK_PORT_FLAVOUR_PHYSICAL);
	if (err) {
	of_node_put(portnp);
	goto out_teardown;
	}

	err = ocelot_probe_port(ocelot, port, target, portnp);
	if (err) {
	ocelot_port_devlink_teardown(ocelot, port);
	continue;
	}

	devlink_ports_registered \|= BIT(port);
	}

	/* Initialize unused devlink ports at the end */
	for (port = 0; port < ocelot->num_phys_ports; port++) {
	if (devlink_ports_registered & BIT(port))
	continue;

	err = ocelot_port_devlink_init(ocelot, port,
	DEVLINK_PORT_FLAVOUR_UNUSED);
	if (err)
	goto out_teardown;

	devlink_ports_registered \|= BIT(port);
	}

	return 0;

	out_teardown:
	/* Unregister the network interfaces */
	mscc_ocelot_release_ports(ocelot);
	/* Tear down devlink ports for the registered network interfaces */
	for (port = 0; port < ocelot->num_phys_ports; port++) {
	if (devlink_ports_registered & BIT(port))
	ocelot_port_devlink_teardown(ocelot, port);
	}
	return err;
	}

	static int mscc_ocelot_probe(struct platform_device *pdev)
	{
	struct device_node *np = pdev->dev.of_node;
	int err, irq_xtr, irq_ptp_rdy;
	struct device_node *ports;
	struct devlink *devlink;
	struct ocelot *ocelot;
	struct regmap *hsio;
	unsigned int i;

	struct {
	enum ocelot_target id;
	char *name;
	u8 optional:1;
	} io_target[] = {
	{ SYS, "sys" },
	{ REW, "rew" },
	{ QSYS, "qsys" },
	{ ANA, "ana" },
	{ QS, "qs" },
	{ S0, "s0" },
	{ S1, "s1" },
	{ S2, "s2" },
	{ PTP, "ptp", 1 },
	{ FDMA, "fdma", 1 },
	};

	if (!np && !pdev->dev.platform_data)
	return -ENODEV;

	devlink =
	devlink_alloc(&ocelot_devlink_ops, sizeof(*ocelot), &pdev->dev);
	if (!devlink)
	return -ENOMEM;

	ocelot = devlink_priv(devlink);
	ocelot->devlink = priv_to_devlink(ocelot);
	platform_set_drvdata(pdev, ocelot);
	ocelot->dev = &pdev->dev;

	for (i = 0; i < ARRAY_SIZE(io_target); i++) {
	struct regmap *target;
	struct resource *res;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
	io_target[i].name);

	target = ocelot_regmap_init(ocelot, res);
	if (IS_ERR(target)) {
	if (io_target[i].optional) {
	ocelot->targets[io_target[i].id] = NULL;
	continue;
	}
	err = PTR_ERR(target);
	goto out_free_devlink;
	}

	ocelot->targets[io_target[i].id] = target;
	}

	if (ocelot->targets[FDMA])
	ocelot_fdma_init(pdev, ocelot);

	hsio = syscon_regmap_lookup_by_compatible("mscc,ocelot-hsio");
	if (IS_ERR(hsio)) {
	dev_err(&pdev->dev, "missing hsio syscon\n");
	err = PTR_ERR(hsio);
	goto out_free_devlink;
	}

	ocelot->targets[HSIO] = hsio;

	err = ocelot_chip_init(ocelot, &ocelot_ops);
	if (err)
	goto out_free_devlink;

	irq_xtr = platform_get_irq_byname(pdev, "xtr");
	if (irq_xtr < 0) {
	err = irq_xtr;
	goto out_free_devlink;
	}

	err = devm_request_threaded_irq(&pdev->dev, irq_xtr, NULL,
	ocelot_xtr_irq_handler, IRQF_ONESHOT,
	"frame extraction", ocelot);
	if (err)
	goto out_free_devlink;

	irq_ptp_rdy = platform_get_irq_byname(pdev, "ptp_rdy");
	if (irq_ptp_rdy > 0 && ocelot->targets[PTP]) {
	err = devm_request_threaded_irq(&pdev->dev, irq_ptp_rdy, NULL,
	ocelot_ptp_rdy_irq_handler,
	IRQF_ONESHOT, "ptp ready",
	ocelot);
	if (err)
	goto out_free_devlink;

	/* Both the PTP interrupt and the PTP bank are available */
	ocelot->ptp = 1;
	}

	ports = of_get_child_by_name(np, "ethernet-ports");
	if (!ports) {
	dev_err(ocelot->dev, "no ethernet-ports child node found\n");
	err = -ENODEV;
	goto out_free_devlink;
	}

	ocelot->num_phys_ports = of_get_child_count(ports);
	ocelot->num_flooding_pgids = 1;

	ocelot->vcap = vsc7514_vcap_props;

	ocelot->vcap_pol.base = VSC7514_VCAP_POLICER_BASE;
	ocelot->vcap_pol.max = VSC7514_VCAP_POLICER_MAX;

	ocelot->npi = -1;

	err = ocelot_init(ocelot);
	if (err)
	goto out_put_ports;

	err = mscc_ocelot_init_ports(pdev, ports);
	if (err)
	goto out_ocelot_devlink_unregister;

	if (ocelot->fdma)
	ocelot_fdma_start(ocelot);

	err = ocelot_devlink_sb_register(ocelot);
	if (err)
	goto out_ocelot_release_ports;

	if (ocelot->ptp) {
	err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
	if (err) {
	dev_err(ocelot->dev,
	"Timestamp initialization failed\n");
	ocelot->ptp = 0;
	}
	}

	register_netdevice_notifier(&ocelot_netdevice_nb);
	register_switchdev_notifier(&ocelot_switchdev_nb);
	register_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);

	of_node_put(ports);
	devlink_register(devlink);

	dev_info(&pdev->dev, "Ocelot switch probed\n");

	return 0;

	out_ocelot_release_ports:
	mscc_ocelot_release_ports(ocelot);
	mscc_ocelot_teardown_devlink_ports(ocelot);
	out_ocelot_devlink_unregister:
	ocelot_deinit(ocelot);
	out_put_ports:
	of_node_put(ports);
	out_free_devlink:
	devlink_free(devlink);
	return err;
	}

	static void mscc_ocelot_remove(struct platform_device *pdev)
	{
	struct ocelot *ocelot = platform_get_drvdata(pdev);

	if (ocelot->fdma)
	ocelot_fdma_deinit(ocelot);
	devlink_unregister(ocelot->devlink);
	ocelot_deinit_timestamp(ocelot);
	ocelot_devlink_sb_unregister(ocelot);
	mscc_ocelot_release_ports(ocelot);
	mscc_ocelot_teardown_devlink_ports(ocelot);
	ocelot_deinit(ocelot);
	unregister_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);
	unregister_switchdev_notifier(&ocelot_switchdev_nb);
	unregister_netdevice_notifier(&ocelot_netdevice_nb);
	devlink_free(ocelot->devlink);
	}

	static struct platform_driver mscc_ocelot_driver = {
	.probe = mscc_ocelot_probe,
	.remove_new = mscc_ocelot_remove,
	.driver = {
	.name = "ocelot-switch",
	.of_match_table = mscc_ocelot_match,
	},
	};

	module_platform_driver(mscc_ocelot_driver);

	MODULE_DESCRIPTION("Microsemi Ocelot switch driver");
	MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@bootlin.com>");
	MODULE_LICENSE("Dual MIT/GPL");