1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
202071f0fSChen-Yu Tsai /*
302071f0fSChen-Yu Tsai * RSB driver for the X-Powers' Power Management ICs
402071f0fSChen-Yu Tsai *
502071f0fSChen-Yu Tsai * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
602071f0fSChen-Yu Tsai * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
702071f0fSChen-Yu Tsai * as well as configurable GPIOs.
802071f0fSChen-Yu Tsai *
902071f0fSChen-Yu Tsai * This driver supports the RSB variants.
1002071f0fSChen-Yu Tsai *
1102071f0fSChen-Yu Tsai * Copyright (C) 2015 Chen-Yu Tsai
1202071f0fSChen-Yu Tsai *
1302071f0fSChen-Yu Tsai * Author: Chen-Yu Tsai <wens@csie.org>
1402071f0fSChen-Yu Tsai */
1502071f0fSChen-Yu Tsai
1602071f0fSChen-Yu Tsai #include <linux/acpi.h>
1702071f0fSChen-Yu Tsai #include <linux/err.h>
1802071f0fSChen-Yu Tsai #include <linux/mfd/axp20x.h>
1902071f0fSChen-Yu Tsai #include <linux/module.h>
2002071f0fSChen-Yu Tsai #include <linux/of.h>
2102071f0fSChen-Yu Tsai #include <linux/regmap.h>
2202071f0fSChen-Yu Tsai #include <linux/slab.h>
2302071f0fSChen-Yu Tsai #include <linux/sunxi-rsb.h>
2402071f0fSChen-Yu Tsai
axp20x_rsb_probe(struct sunxi_rsb_device * rdev)2502071f0fSChen-Yu Tsai static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev)
2602071f0fSChen-Yu Tsai {
2702071f0fSChen-Yu Tsai struct axp20x_dev *axp20x;
2802071f0fSChen-Yu Tsai int ret;
2902071f0fSChen-Yu Tsai
3002071f0fSChen-Yu Tsai axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL);
3102071f0fSChen-Yu Tsai if (!axp20x)
3202071f0fSChen-Yu Tsai return -ENOMEM;
3302071f0fSChen-Yu Tsai
3402071f0fSChen-Yu Tsai axp20x->dev = &rdev->dev;
3502071f0fSChen-Yu Tsai axp20x->irq = rdev->irq;
3602071f0fSChen-Yu Tsai dev_set_drvdata(&rdev->dev, axp20x);
3702071f0fSChen-Yu Tsai
3802071f0fSChen-Yu Tsai ret = axp20x_match_device(axp20x);
3902071f0fSChen-Yu Tsai if (ret)
4002071f0fSChen-Yu Tsai return ret;
4102071f0fSChen-Yu Tsai
4202071f0fSChen-Yu Tsai axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg);
4302071f0fSChen-Yu Tsai if (IS_ERR(axp20x->regmap)) {
4402071f0fSChen-Yu Tsai ret = PTR_ERR(axp20x->regmap);
4502071f0fSChen-Yu Tsai dev_err(&rdev->dev, "regmap init failed: %d\n", ret);
4602071f0fSChen-Yu Tsai return ret;
4702071f0fSChen-Yu Tsai }
4802071f0fSChen-Yu Tsai
4902071f0fSChen-Yu Tsai return axp20x_device_probe(axp20x);
5002071f0fSChen-Yu Tsai }
5102071f0fSChen-Yu Tsai
axp20x_rsb_remove(struct sunxi_rsb_device * rdev)52*3c15e00eSUwe Kleine-König static void axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
5302071f0fSChen-Yu Tsai {
5402071f0fSChen-Yu Tsai struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev);
5502071f0fSChen-Yu Tsai
56*3c15e00eSUwe Kleine-König axp20x_device_remove(axp20x);
5702071f0fSChen-Yu Tsai }
5802071f0fSChen-Yu Tsai
5902071f0fSChen-Yu Tsai static const struct of_device_id axp20x_rsb_of_match[] = {
6002071f0fSChen-Yu Tsai { .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
611578353eSIcenowy Zheng { .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
628824ee85SChen-Yu Tsai { .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
6320147f0dSChen-Yu Tsai { .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
647303733aSChen-Yu Tsai { .compatible = "x-powers,axp813", .data = (void *)AXP813_ID },
6502071f0fSChen-Yu Tsai { },
6602071f0fSChen-Yu Tsai };
6702071f0fSChen-Yu Tsai MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
6802071f0fSChen-Yu Tsai
6902071f0fSChen-Yu Tsai static struct sunxi_rsb_driver axp20x_rsb_driver = {
7002071f0fSChen-Yu Tsai .driver = {
7102071f0fSChen-Yu Tsai .name = "axp20x-rsb",
7202071f0fSChen-Yu Tsai .of_match_table = of_match_ptr(axp20x_rsb_of_match),
7302071f0fSChen-Yu Tsai },
7402071f0fSChen-Yu Tsai .probe = axp20x_rsb_probe,
7502071f0fSChen-Yu Tsai .remove = axp20x_rsb_remove,
7602071f0fSChen-Yu Tsai };
7702071f0fSChen-Yu Tsai module_sunxi_rsb_driver(axp20x_rsb_driver);
7802071f0fSChen-Yu Tsai
7902071f0fSChen-Yu Tsai MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X");
8002071f0fSChen-Yu Tsai MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
8102071f0fSChen-Yu Tsai MODULE_LICENSE("GPL v2");
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