1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * RSB 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 RSB variants. |
10 | * |
11 | * Copyright (C) 2015 Chen-Yu Tsai |
12 | * |
13 | * Author: Chen-Yu Tsai <wens@csie.org> |
14 | */ |
15 | |
16 | #include <linux/acpi.h> |
17 | #include <linux/err.h> |
18 | #include <linux/mfd/axp20x.h> |
19 | #include <linux/module.h> |
20 | #include <linux/of.h> |
21 | #include <linux/regmap.h> |
22 | #include <linux/slab.h> |
23 | #include <linux/sunxi-rsb.h> |
24 | |
25 | static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev) |
26 | { |
27 | struct axp20x_dev *axp20x; |
28 | int ret; |
29 | |
30 | axp20x = devm_kzalloc(dev: &rdev->dev, size: sizeof(*axp20x), GFP_KERNEL); |
31 | if (!axp20x) |
32 | return -ENOMEM; |
33 | |
34 | axp20x->dev = &rdev->dev; |
35 | axp20x->irq = rdev->irq; |
36 | dev_set_drvdata(dev: &rdev->dev, data: axp20x); |
37 | |
38 | ret = axp20x_match_device(axp20x); |
39 | if (ret) |
40 | return ret; |
41 | |
42 | axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg); |
43 | if (IS_ERR(ptr: axp20x->regmap)) { |
44 | ret = PTR_ERR(ptr: axp20x->regmap); |
45 | dev_err(&rdev->dev, "regmap init failed: %d\n" , ret); |
46 | return ret; |
47 | } |
48 | |
49 | return axp20x_device_probe(axp20x); |
50 | } |
51 | |
52 | static void axp20x_rsb_remove(struct sunxi_rsb_device *rdev) |
53 | { |
54 | struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev); |
55 | |
56 | axp20x_device_remove(axp20x); |
57 | } |
58 | |
59 | static const struct of_device_id axp20x_rsb_of_match[] = { |
60 | { .compatible = "x-powers,axp223" , .data = (void *)AXP223_ID }, |
61 | { .compatible = "x-powers,axp803" , .data = (void *)AXP803_ID }, |
62 | { .compatible = "x-powers,axp806" , .data = (void *)AXP806_ID }, |
63 | { .compatible = "x-powers,axp809" , .data = (void *)AXP809_ID }, |
64 | { .compatible = "x-powers,axp813" , .data = (void *)AXP813_ID }, |
65 | { }, |
66 | }; |
67 | MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match); |
68 | |
69 | static struct sunxi_rsb_driver axp20x_rsb_driver = { |
70 | .driver = { |
71 | .name = "axp20x-rsb" , |
72 | .of_match_table = of_match_ptr(axp20x_rsb_of_match), |
73 | }, |
74 | .probe = axp20x_rsb_probe, |
75 | .remove = axp20x_rsb_remove, |
76 | }; |
77 | module_sunxi_rsb_driver(axp20x_rsb_driver); |
78 | |
79 | MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X" ); |
80 | MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>" ); |
81 | MODULE_LICENSE("GPL v2" ); |
82 | |