1/*
 2 * RSB driver for the X-Powers' Power Management ICs
 3 *
 4 * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
 5 * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
 6 * as well as configurable GPIOs.
 7 *
 8 * This driver supports the RSB variants.
 9 *
10 * Copyright (C) 2015 Chen-Yu Tsai
11 *
12 * Author: Chen-Yu Tsai <wens@csie.org>
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19#include <linux/acpi.h>
20#include <linux/err.h>
21#include <linux/mfd/axp20x.h>
22#include <linux/module.h>
23#include <linux/of.h>
24#include <linux/regmap.h>
25#include <linux/slab.h>
26#include <linux/sunxi-rsb.h>
27
28static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev)
29{
30	struct axp20x_dev *axp20x;
31	int ret;
32
33	axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL);
34	if (!axp20x)
35		return -ENOMEM;
36
37	axp20x->dev = &rdev->dev;
38	axp20x->irq = rdev->irq;
39	dev_set_drvdata(&rdev->dev, axp20x);
40
41	ret = axp20x_match_device(axp20x);
42	if (ret)
43		return ret;
44
45	axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg);
46	if (IS_ERR(axp20x->regmap)) {
47		ret = PTR_ERR(axp20x->regmap);
48		dev_err(&rdev->dev, "regmap init failed: %d\n", ret);
49		return ret;
50	}
51
52	return axp20x_device_probe(axp20x);
53}
54
55static int axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
56{
57	struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev);
58
59	return axp20x_device_remove(axp20x);
60}
61
62static const struct of_device_id axp20x_rsb_of_match[] = {
63	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
64	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
65	{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
66	{ },
67};
68MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
69
70static struct sunxi_rsb_driver axp20x_rsb_driver = {
71	.driver = {
72		.name	= "axp20x-rsb",
73		.of_match_table	= of_match_ptr(axp20x_rsb_of_match),
74	},
75	.probe	= axp20x_rsb_probe,
76	.remove	= axp20x_rsb_remove,
77};
78module_sunxi_rsb_driver(axp20x_rsb_driver);
79
80MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X");
81MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
82MODULE_LICENSE("GPL v2");