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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
* Andrew F. Davis <afd@ti.com>
*
* Based on the TPS65912 driver
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/mfd/tps65086.h>
static const struct mfd_cell tps65086_cells[] = {
{ .name = "tps65086-regulator", },
{ .name = "tps65086-gpio", },
{ .name = "tps65086-reset", },
};
static const struct regmap_range tps65086_yes_ranges[] = {
regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
};
static const struct regmap_access_table tps65086_volatile_table = {
.yes_ranges = tps65086_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
};
static const struct regmap_config tps65086_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_MAPLE,
.volatile_table = &tps65086_volatile_table,
.max_register = TPS65086_OC_STATUS,
};
static const struct regmap_irq tps65086_irqs[] = {
REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
};
static struct regmap_irq_chip tps65086_irq_chip = {
.name = "tps65086",
.status_base = TPS65086_IRQ,
.mask_base = TPS65086_IRQ_MASK,
.ack_base = TPS65086_IRQ,
.init_ack_masked = true,
.num_regs = 1,
.irqs = tps65086_irqs,
.num_irqs = ARRAY_SIZE(tps65086_irqs),
};
static const struct of_device_id tps65086_of_match_table[] = {
{ .compatible = "ti,tps65086", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
static int tps65086_probe(struct i2c_client *client)
{
struct tps65086 *tps;
unsigned int version;
int ret;
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
i2c_set_clientdata(client, tps);
tps->dev = &client->dev;
tps->irq = client->irq;
tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
if (IS_ERR(tps->regmap)) {
dev_err(tps->dev, "Failed to initialize register map\n");
return PTR_ERR(tps->regmap);
}
/* Store device ID to load regulator configuration that fit to IC variant */
ret = regmap_read(tps->regmap, TPS65086_DEVICEID1, &tps->chip_id);
if (ret) {
dev_err(tps->dev, "Failed to read revision register 1\n");
return ret;
}
ret = regmap_read(tps->regmap, TPS65086_DEVICEID2, &version);
if (ret) {
dev_err(tps->dev, "Failed to read revision register 2\n");
return ret;
}
dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
(version & TPS65086_DEVICEID2_PART_MASK),
(char)((version & TPS65086_DEVICEID2_OTP_MASK) >> 4) + 'A',
(version & TPS65086_DEVICEID2_REV_MASK) >> 6);
if (tps->irq > 0) {
ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
&tps65086_irq_chip, &tps->irq_data);
if (ret) {
dev_err(tps->dev, "Failed to register IRQ chip\n");
return ret;
}
}
ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
ARRAY_SIZE(tps65086_cells), NULL, 0,
regmap_irq_get_domain(tps->irq_data));
if (ret && tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
return ret;
}
static void tps65086_remove(struct i2c_client *client)
{
struct tps65086 *tps = i2c_get_clientdata(client);
if (tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
}
static const struct i2c_device_id tps65086_id_table[] = {
{ "tps65086" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
static struct i2c_driver tps65086_driver = {
.driver = {
.name = "tps65086",
.of_match_table = tps65086_of_match_table,
},
.probe = tps65086_probe,
.remove = tps65086_remove,
.id_table = tps65086_id_table,
};
module_i2c_driver(tps65086_driver);
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65086 PMIC Driver");
MODULE_LICENSE("GPL v2");
|
