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