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
25static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev)
26{
27	struct axp20x_dev *axp20x;
28	int ret;
29
30	axp20x = devm_kzalloc(&rdev->dev, 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(&rdev->dev, 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(axp20x->regmap)) {
44		ret = PTR_ERR(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
52static 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
59static 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};
67MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
68
69static 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};
77module_sunxi_rsb_driver(axp20x_rsb_driver);
78
79MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X");
80MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
81MODULE_LICENSE("GPL v2");
82