1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
  2/*
  3 * Copyright 2021-2022 Innovative Advantage Inc.
  4 */
  5
  6#include <linux/mfd/ocelot.h>
  7#include <linux/platform_device.h>
  8#include <linux/regmap.h>
  9#include <soc/mscc/ocelot.h>
 10#include <soc/mscc/vsc7514_regs.h>
 11#include "felix.h"
 12
 13#define VSC7514_NUM_PORTS		11
 14
 15#define OCELOT_PORT_MODE_SERDES		(OCELOT_PORT_MODE_SGMII | \
 16					 OCELOT_PORT_MODE_QSGMII)
 17
 18static const u32 vsc7512_port_modes[VSC7514_NUM_PORTS] = {
 19	OCELOT_PORT_MODE_INTERNAL,
 20	OCELOT_PORT_MODE_INTERNAL,
 21	OCELOT_PORT_MODE_INTERNAL,
 22	OCELOT_PORT_MODE_INTERNAL,
 23	OCELOT_PORT_MODE_SERDES,
 24	OCELOT_PORT_MODE_SERDES,
 25	OCELOT_PORT_MODE_SERDES,
 26	OCELOT_PORT_MODE_SERDES,
 27	OCELOT_PORT_MODE_SERDES,
 28	OCELOT_PORT_MODE_SGMII,
 29	OCELOT_PORT_MODE_SERDES,
 30};
 31
 32static const struct ocelot_ops ocelot_ext_ops = {
 33	.reset		= ocelot_reset,
 34	.wm_enc		= ocelot_wm_enc,
 35	.wm_dec		= ocelot_wm_dec,
 36	.wm_stat	= ocelot_wm_stat,
 37	.port_to_netdev	= felix_port_to_netdev,
 38	.netdev_to_port	= felix_netdev_to_port,
 39};
 40
 41static const char * const vsc7512_resource_names[TARGET_MAX] = {
 42	[SYS] = "sys",
 43	[REW] = "rew",
 44	[S0] = "s0",
 45	[S1] = "s1",
 46	[S2] = "s2",
 47	[QS] = "qs",
 48	[QSYS] = "qsys",
 49	[ANA] = "ana",
 50};
 51
 52static const struct felix_info vsc7512_info = {
 53	.resource_names			= vsc7512_resource_names,
 54	.regfields			= vsc7514_regfields,
 55	.map				= vsc7514_regmap,
 56	.ops				= &ocelot_ext_ops,
 57	.vcap				= vsc7514_vcap_props,
 58	.num_mact_rows			= 1024,
 59	.num_ports			= VSC7514_NUM_PORTS,
 60	.num_tx_queues			= OCELOT_NUM_TC,
 61	.port_modes			= vsc7512_port_modes,
 62	.phylink_mac_config		= ocelot_phylink_mac_config,
 63	.configure_serdes		= ocelot_port_configure_serdes,
 64};
 65
 66static int ocelot_ext_probe(struct platform_device *pdev)
 67{
 68	struct device *dev = &pdev->dev;
 69	struct dsa_switch *ds;
 70	struct ocelot *ocelot;
 71	struct felix *felix;
 72	int err;
 73
 74	felix = kzalloc(sizeof(*felix), GFP_KERNEL);
 75	if (!felix)
 76		return -ENOMEM;
 77
 78	dev_set_drvdata(dev, felix);
 79
 80	ocelot = &felix->ocelot;
 81	ocelot->dev = dev;
 82
 83	ocelot->num_flooding_pgids = 1;
 84
 85	felix->info = &vsc7512_info;
 86
 87	ds = kzalloc(sizeof(*ds), GFP_KERNEL);
 88	if (!ds) {
 89		err = -ENOMEM;
 90		dev_err_probe(dev, err, "Failed to allocate DSA switch\n");
 91		goto err_free_felix;
 92	}
 93
 94	ds->dev = dev;
 95	ds->num_ports = felix->info->num_ports;
 96	ds->num_tx_queues = felix->info->num_tx_queues;
 97
 98	ds->ops = &felix_switch_ops;
 99	ds->priv = ocelot;
100	felix->ds = ds;
101	felix->tag_proto = DSA_TAG_PROTO_OCELOT;
102
103	err = dsa_register_switch(ds);
104	if (err) {
105		dev_err_probe(dev, err, "Failed to register DSA switch\n");
106		goto err_free_ds;
107	}
108
109	return 0;
110
111err_free_ds:
112	kfree(ds);
113err_free_felix:
114	kfree(felix);
115	return err;
116}
117
118static void ocelot_ext_remove(struct platform_device *pdev)
119{
120	struct felix *felix = dev_get_drvdata(&pdev->dev);
121
122	if (!felix)
123		return;
124
125	dsa_unregister_switch(felix->ds);
126
127	kfree(felix->ds);
128	kfree(felix);
129}
130
131static void ocelot_ext_shutdown(struct platform_device *pdev)
132{
133	struct felix *felix = dev_get_drvdata(&pdev->dev);
134
135	if (!felix)
136		return;
137
138	dsa_switch_shutdown(felix->ds);
139
140	dev_set_drvdata(&pdev->dev, NULL);
141}
142
143static const struct of_device_id ocelot_ext_switch_of_match[] = {
144	{ .compatible = "mscc,vsc7512-switch" },
145	{ },
146};
147MODULE_DEVICE_TABLE(of, ocelot_ext_switch_of_match);
148
149static struct platform_driver ocelot_ext_switch_driver = {
150	.driver = {
151		.name = "ocelot-ext-switch",
152		.of_match_table = ocelot_ext_switch_of_match,
153	},
154	.probe = ocelot_ext_probe,
155	.remove_new = ocelot_ext_remove,
156	.shutdown = ocelot_ext_shutdown,
157};
158module_platform_driver(ocelot_ext_switch_driver);
159
160MODULE_DESCRIPTION("External Ocelot Switch driver");
161MODULE_LICENSE("GPL");
162MODULE_IMPORT_NS(MFD_OCELOT);