Merge patch series "Some style cleanups for recent extension additions"
[platform/kernel/linux-starfive.git] / drivers / mfd / axp20x-i2c.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * I2C driver for the X-Powers' Power Management ICs
4  *
5  * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
6  * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
7  * as well as configurable GPIOs.
8  *
9  * This driver supports the I2C variants.
10  *
11  * Copyright (C) 2014 Carlo Caione
12  *
13  * Author: Carlo Caione <carlo@caione.org>
14  */
15
16 #include <linux/acpi.h>
17 #include <linux/err.h>
18 #include <linux/i2c.h>
19 #include <linux/module.h>
20 #include <linux/mfd/axp20x.h>
21 #include <linux/of.h>
22 #include <linux/regmap.h>
23 #include <linux/slab.h>
24
25 static int axp20x_i2c_probe(struct i2c_client *i2c,
26                             const struct i2c_device_id *id)
27 {
28         struct axp20x_dev *axp20x;
29         int ret;
30
31         axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
32         if (!axp20x)
33                 return -ENOMEM;
34
35         axp20x->dev = &i2c->dev;
36         axp20x->irq = i2c->irq;
37         dev_set_drvdata(axp20x->dev, axp20x);
38
39         ret = axp20x_match_device(axp20x);
40         if (ret)
41                 return ret;
42
43         axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
44         if (IS_ERR(axp20x->regmap)) {
45                 ret = PTR_ERR(axp20x->regmap);
46                 dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
47                 return ret;
48         }
49
50         return axp20x_device_probe(axp20x);
51 }
52
53 static void axp20x_i2c_remove(struct i2c_client *i2c)
54 {
55         struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
56
57         axp20x_device_remove(axp20x);
58 }
59
60 #ifdef CONFIG_OF
61 static const struct of_device_id axp20x_i2c_of_match[] = {
62         { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
63         { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
64         { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
65         { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
66         { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
67         { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
68         { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
69         { },
70 };
71 MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
72 #endif
73
74 static const struct i2c_device_id axp20x_i2c_id[] = {
75         { "axp152", 0 },
76         { "axp202", 0 },
77         { "axp209", 0 },
78         { "axp221", 0 },
79         { "axp223", 0 },
80         { "axp803", 0 },
81         { "axp806", 0 },
82         { },
83 };
84 MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
85
86 #ifdef CONFIG_ACPI
87 static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
88         {
89                 .id = "INT33F4",
90                 .driver_data = AXP288_ID,
91         },
92         { },
93 };
94 MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
95 #endif
96
97 static struct i2c_driver axp20x_i2c_driver = {
98         .driver = {
99                 .name   = "axp20x-i2c",
100                 .of_match_table = of_match_ptr(axp20x_i2c_of_match),
101                 .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),
102         },
103         .probe          = axp20x_i2c_probe,
104         .remove         = axp20x_i2c_remove,
105         .id_table       = axp20x_i2c_id,
106 };
107
108 module_i2c_driver(axp20x_i2c_driver);
109
110 MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
111 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
112 MODULE_LICENSE("GPL");