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 | { |
27 | struct axp20x_dev *axp20x; |
28 | int ret; |
29 | |
30 | axp20x = devm_kzalloc(dev: &i2c->dev, size: sizeof(*axp20x), GFP_KERNEL); |
31 | if (!axp20x) |
32 | return -ENOMEM; |
33 | |
34 | axp20x->dev = &i2c->dev; |
35 | axp20x->irq = i2c->irq; |
36 | dev_set_drvdata(dev: axp20x->dev, data: axp20x); |
37 | |
38 | ret = axp20x_match_device(axp20x); |
39 | if (ret) |
40 | return ret; |
41 | |
42 | axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg); |
43 | if (IS_ERR(ptr: axp20x->regmap)) { |
44 | ret = PTR_ERR(ptr: axp20x->regmap); |
45 | dev_err(&i2c->dev, "regmap init failed: %d\n" , ret); |
46 | return ret; |
47 | } |
48 | |
49 | return axp20x_device_probe(axp20x); |
50 | } |
51 | |
52 | static void axp20x_i2c_remove(struct i2c_client *i2c) |
53 | { |
54 | struct axp20x_dev *axp20x = i2c_get_clientdata(client: i2c); |
55 | |
56 | axp20x_device_remove(axp20x); |
57 | } |
58 | |
59 | #ifdef CONFIG_OF |
60 | static const struct of_device_id axp20x_i2c_of_match[] = { |
61 | { .compatible = "x-powers,axp152" , .data = (void *)AXP152_ID }, |
62 | { .compatible = "x-powers,axp192" , .data = (void *)AXP192_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,axp313a" , .data = (void *)AXP313A_ID }, |
68 | { .compatible = "x-powers,axp803" , .data = (void *)AXP803_ID }, |
69 | { .compatible = "x-powers,axp806" , .data = (void *)AXP806_ID }, |
70 | { .compatible = "x-powers,axp15060" , .data = (void *)AXP15060_ID }, |
71 | { }, |
72 | }; |
73 | MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match); |
74 | #endif |
75 | |
76 | static const struct i2c_device_id axp20x_i2c_id[] = { |
77 | { "axp152" , 0 }, |
78 | { "axp192" , 0 }, |
79 | { "axp202" , 0 }, |
80 | { "axp209" , 0 }, |
81 | { "axp221" , 0 }, |
82 | { "axp223" , 0 }, |
83 | { "axp313a" , 0 }, |
84 | { "axp803" , 0 }, |
85 | { "axp806" , 0 }, |
86 | { "axp15060" , 0 }, |
87 | { }, |
88 | }; |
89 | MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id); |
90 | |
91 | #ifdef CONFIG_ACPI |
92 | static const struct acpi_device_id axp20x_i2c_acpi_match[] = { |
93 | { |
94 | .id = "INT33F4" , |
95 | .driver_data = AXP288_ID, |
96 | }, |
97 | { }, |
98 | }; |
99 | MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match); |
100 | #endif |
101 | |
102 | static struct i2c_driver axp20x_i2c_driver = { |
103 | .driver = { |
104 | .name = "axp20x-i2c" , |
105 | .of_match_table = of_match_ptr(axp20x_i2c_of_match), |
106 | .acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match), |
107 | }, |
108 | .probe = axp20x_i2c_probe, |
109 | .remove = axp20x_i2c_remove, |
110 | .id_table = axp20x_i2c_id, |
111 | }; |
112 | |
113 | module_i2c_driver(axp20x_i2c_driver); |
114 | |
115 | MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X" ); |
116 | MODULE_AUTHOR("Carlo Caione <carlo@caione.org>" ); |
117 | MODULE_LICENSE("GPL" ); |
118 | |