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 int ocelot_ext_remove(struct platform_device *pdev)
119{
120	struct felix *felix = dev_get_drvdata(&pdev->dev);
121
122	if (!felix)
123		return 0;
124
125	dsa_unregister_switch(felix->ds);
126
127	kfree(felix->ds);
128	kfree(felix);
129
130	return 0;
131}
132
133static void ocelot_ext_shutdown(struct platform_device *pdev)
134{
135	struct felix *felix = dev_get_drvdata(&pdev->dev);
136
137	if (!felix)
138		return;
139
140	dsa_switch_shutdown(felix->ds);
141
142	dev_set_drvdata(&pdev->dev, NULL);
143}
144
145static const struct of_device_id ocelot_ext_switch_of_match[] = {
146	{ .compatible = "mscc,vsc7512-switch" },
147	{ },
148};
149MODULE_DEVICE_TABLE(of, ocelot_ext_switch_of_match);
150
151static struct platform_driver ocelot_ext_switch_driver = {
152	.driver = {
153		.name = "ocelot-ext-switch",
154		.of_match_table = ocelot_ext_switch_of_match,
155	},
156	.probe = ocelot_ext_probe,
157	.remove = ocelot_ext_remove,
158	.shutdown = ocelot_ext_shutdown,
159};
160module_platform_driver(ocelot_ext_switch_driver);
161
162MODULE_DESCRIPTION("External Ocelot Switch driver");
163MODULE_LICENSE("GPL");
164MODULE_IMPORT_NS(MFD_OCELOT);
165