1 // SPDX-License-Identifier: GPL-2.0-only
3 * I2C driver for the X-Powers' Power Management ICs
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.
9 * This driver supports the I2C variants.
11 * Copyright (C) 2014 Carlo Caione
13 * Author: Carlo Caione <carlo@caione.org>
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>
22 #include <linux/regmap.h>
23 #include <linux/slab.h>
25 static int axp20x_i2c_probe(struct i2c_client
*i2c
,
26 const struct i2c_device_id
*id
)
28 struct axp20x_dev
*axp20x
;
31 axp20x
= devm_kzalloc(&i2c
->dev
, sizeof(*axp20x
), GFP_KERNEL
);
35 axp20x
->dev
= &i2c
->dev
;
36 axp20x
->irq
= i2c
->irq
;
37 dev_set_drvdata(axp20x
->dev
, axp20x
);
39 ret
= axp20x_match_device(axp20x
);
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
);
50 return axp20x_device_probe(axp20x
);
53 static int axp20x_i2c_remove(struct i2c_client
*i2c
)
55 struct axp20x_dev
*axp20x
= i2c_get_clientdata(i2c
);
57 axp20x_device_remove(axp20x
);
63 static const struct of_device_id axp20x_i2c_of_match
[] = {
64 { .compatible
= "x-powers,axp152", .data
= (void *)AXP152_ID
},
65 { .compatible
= "x-powers,axp202", .data
= (void *)AXP202_ID
},
66 { .compatible
= "x-powers,axp209", .data
= (void *)AXP209_ID
},
67 { .compatible
= "x-powers,axp221", .data
= (void *)AXP221_ID
},
68 { .compatible
= "x-powers,axp223", .data
= (void *)AXP223_ID
},
69 { .compatible
= "x-powers,axp803", .data
= (void *)AXP803_ID
},
70 { .compatible
= "x-powers,axp806", .data
= (void *)AXP806_ID
},
73 MODULE_DEVICE_TABLE(of
, axp20x_i2c_of_match
);
76 static const struct i2c_device_id axp20x_i2c_id
[] = {
86 MODULE_DEVICE_TABLE(i2c
, axp20x_i2c_id
);
89 static const struct acpi_device_id axp20x_i2c_acpi_match
[] = {
92 .driver_data
= AXP288_ID
,
96 MODULE_DEVICE_TABLE(acpi
, axp20x_i2c_acpi_match
);
99 static struct i2c_driver axp20x_i2c_driver
= {
101 .name
= "axp20x-i2c",
102 .of_match_table
= of_match_ptr(axp20x_i2c_of_match
),
103 .acpi_match_table
= ACPI_PTR(axp20x_i2c_acpi_match
),
105 .probe
= axp20x_i2c_probe
,
106 .remove
= axp20x_i2c_remove
,
107 .id_table
= axp20x_i2c_id
,
110 module_i2c_driver(axp20x_i2c_driver
);
112 MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
113 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
114 MODULE_LICENSE("GPL");