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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Microchip KSZ9477 series register access through I2C
4 *
5 * Copyright (C) 2018-2024 Microchip Technology Inc.
6 */
7
8#include <linux/i2c.h>
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/regmap.h>
12
13#include "ksz_common.h"
14
15KSZ_REGMAP_TABLE(ksz9477, not_used, 16, 0, 0);
16
17static int ksz9477_i2c_probe(struct i2c_client *i2c)
18{
19 const struct ksz_chip_data *chip;
20 struct device *ddev = &i2c->dev;
21 struct regmap_config rc;
22 struct ksz_device *dev;
23 int i, ret;
24
25 dev = ksz_switch_alloc(&i2c->dev, i2c);
26 if (!dev)
27 return -ENOMEM;
28
29 chip = device_get_match_data(ddev);
30 if (!chip)
31 return -EINVAL;
32
33 /* Save chip id to do special initialization when probing. */
34 dev->chip_id = chip->chip_id;
35 for (i = 0; i < __KSZ_NUM_REGMAPS; i++) {
36 rc = ksz9477_regmap_config[i];
37 rc.lock_arg = &dev->regmap_mutex;
38 dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc);
39 if (IS_ERR(dev->regmap[i])) {
40 return dev_err_probe(&i2c->dev, PTR_ERR(dev->regmap[i]),
41 "Failed to initialize regmap%i\n",
42 ksz9477_regmap_config[i].val_bits);
43 }
44 }
45
46 if (i2c->dev.platform_data)
47 dev->pdata = i2c->dev.platform_data;
48
49 dev->irq = i2c->irq;
50
51 ret = ksz_switch_register(dev);
52
53 /* Main DSA driver may not be started yet. */
54 if (ret)
55 return ret;
56
57 i2c_set_clientdata(i2c, dev);
58
59 return 0;
60}
61
62static void ksz9477_i2c_remove(struct i2c_client *i2c)
63{
64 struct ksz_device *dev = i2c_get_clientdata(i2c);
65
66 if (dev)
67 ksz_switch_remove(dev);
68}
69
70static void ksz9477_i2c_shutdown(struct i2c_client *i2c)
71{
72 struct ksz_device *dev = i2c_get_clientdata(i2c);
73
74 if (!dev)
75 return;
76
77 ksz_switch_shutdown(dev);
78
79 i2c_set_clientdata(i2c, NULL);
80}
81
82static const struct i2c_device_id ksz9477_i2c_id[] = {
83 { "ksz9477-switch" },
84 {}
85};
86
87MODULE_DEVICE_TABLE(i2c, ksz9477_i2c_id);
88
89static const struct of_device_id ksz9477_dt_ids[] = {
90 {
91 .compatible = "microchip,ksz9477",
92 .data = &ksz_switch_chips[KSZ9477]
93 },
94 {
95 .compatible = "microchip,ksz9896",
96 .data = &ksz_switch_chips[KSZ9896]
97 },
98 {
99 .compatible = "microchip,ksz9897",
100 .data = &ksz_switch_chips[KSZ9897]
101 },
102 {
103 .compatible = "microchip,ksz9893",
104 .data = &ksz_switch_chips[KSZ9893]
105 },
106 {
107 .compatible = "microchip,ksz9563",
108 .data = &ksz_switch_chips[KSZ9563]
109 },
110 {
111 .compatible = "microchip,ksz8563",
112 .data = &ksz_switch_chips[KSZ8563]
113 },
114 {
115 .compatible = "microchip,ksz8567",
116 .data = &ksz_switch_chips[KSZ8567]
117 },
118 {
119 .compatible = "microchip,ksz9567",
120 .data = &ksz_switch_chips[KSZ9567]
121 },
122 {
123 .compatible = "microchip,lan9646",
124 .data = &ksz_switch_chips[LAN9646]
125 },
126 {},
127};
128MODULE_DEVICE_TABLE(of, ksz9477_dt_ids);
129
130static struct i2c_driver ksz9477_i2c_driver = {
131 .driver = {
132 .name = "ksz9477-switch",
133 .of_match_table = ksz9477_dt_ids,
134 },
135 .probe = ksz9477_i2c_probe,
136 .remove = ksz9477_i2c_remove,
137 .shutdown = ksz9477_i2c_shutdown,
138 .id_table = ksz9477_i2c_id,
139};
140
141module_i2c_driver(ksz9477_i2c_driver);
142
143MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
144MODULE_DESCRIPTION("Microchip KSZ9477 Series Switch I2C access Driver");
145MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Microchip KSZ9477 series register access through I2C
4 *
5 * Copyright (C) 2018-2019 Microchip Technology Inc.
6 */
7
8#include <linux/i2c.h>
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/regmap.h>
12
13#include "ksz_common.h"
14
15KSZ_REGMAP_TABLE(ksz9477, not_used, 16, 0, 0);
16
17static int ksz9477_i2c_probe(struct i2c_client *i2c,
18 const struct i2c_device_id *i2c_id)
19{
20 struct regmap_config rc;
21 struct ksz_device *dev;
22 int i, ret;
23
24 dev = ksz_switch_alloc(&i2c->dev, i2c);
25 if (!dev)
26 return -ENOMEM;
27
28 for (i = 0; i < ARRAY_SIZE(ksz9477_regmap_config); i++) {
29 rc = ksz9477_regmap_config[i];
30 rc.lock_arg = &dev->regmap_mutex;
31 dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc);
32 if (IS_ERR(dev->regmap[i])) {
33 ret = PTR_ERR(dev->regmap[i]);
34 dev_err(&i2c->dev,
35 "Failed to initialize regmap%i: %d\n",
36 ksz9477_regmap_config[i].val_bits, ret);
37 return ret;
38 }
39 }
40
41 if (i2c->dev.platform_data)
42 dev->pdata = i2c->dev.platform_data;
43
44 ret = ksz9477_switch_register(dev);
45
46 /* Main DSA driver may not be started yet. */
47 if (ret)
48 return ret;
49
50 i2c_set_clientdata(i2c, dev);
51
52 return 0;
53}
54
55static int ksz9477_i2c_remove(struct i2c_client *i2c)
56{
57 struct ksz_device *dev = i2c_get_clientdata(i2c);
58
59 ksz_switch_remove(dev);
60
61 return 0;
62}
63
64static void ksz9477_i2c_shutdown(struct i2c_client *i2c)
65{
66 struct ksz_device *dev = i2c_get_clientdata(i2c);
67
68 if (dev && dev->dev_ops->shutdown)
69 dev->dev_ops->shutdown(dev);
70}
71
72static const struct i2c_device_id ksz9477_i2c_id[] = {
73 { "ksz9477-switch", 0 },
74 {},
75};
76
77MODULE_DEVICE_TABLE(i2c, ksz9477_i2c_id);
78
79static const struct of_device_id ksz9477_dt_ids[] = {
80 { .compatible = "microchip,ksz9477" },
81 { .compatible = "microchip,ksz9897" },
82 { .compatible = "microchip,ksz9893" },
83 { .compatible = "microchip,ksz9563" },
84 { .compatible = "microchip,ksz9567" },
85 {},
86};
87MODULE_DEVICE_TABLE(of, ksz9477_dt_ids);
88
89static struct i2c_driver ksz9477_i2c_driver = {
90 .driver = {
91 .name = "ksz9477-switch",
92 .of_match_table = of_match_ptr(ksz9477_dt_ids),
93 },
94 .probe = ksz9477_i2c_probe,
95 .remove = ksz9477_i2c_remove,
96 .shutdown = ksz9477_i2c_shutdown,
97 .id_table = ksz9477_i2c_id,
98};
99
100module_i2c_driver(ksz9477_i2c_driver);
101
102MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
103MODULE_DESCRIPTION("Microchip KSZ9477 Series Switch I2C access Driver");
104MODULE_LICENSE("GPL v2");