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7303733a6c
The X-Powers AXP813 PMIC is normally used with Allwinner's A83T SoC. It has the same range of functions as other X-Powers PMICs, such as DC-DC buck converter and linear regulator outputs, AC-IN and VBUS power supplies, power button trigger, GPIOs, ADCs, and a battery charger. Note that the IRQ table given in the datasheet is incorrect: in IRQ enable/status registers 1, there are separate IRQs for ACIN and VBUS, instead of bits [7:5] being the same as bits [4:2]. So it shares the same IRQs as the AXP803, rather than the AXP288. This patch adds basic mfd support for it, with only the power button enabled. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* RSB driver for the X-Powers' Power Management ICs
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*
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* AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
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* converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
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* as well as configurable GPIOs.
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*
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* This driver supports the RSB variants.
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*
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* Copyright (C) 2015 Chen-Yu Tsai
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*
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* Author: Chen-Yu Tsai <wens@csie.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/acpi.h>
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#include <linux/err.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/sunxi-rsb.h>
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static int axp20x_rsb_probe(struct sunxi_rsb_device *rdev)
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{
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struct axp20x_dev *axp20x;
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int ret;
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axp20x = devm_kzalloc(&rdev->dev, sizeof(*axp20x), GFP_KERNEL);
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if (!axp20x)
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return -ENOMEM;
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axp20x->dev = &rdev->dev;
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axp20x->irq = rdev->irq;
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dev_set_drvdata(&rdev->dev, axp20x);
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ret = axp20x_match_device(axp20x);
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if (ret)
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return ret;
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axp20x->regmap = devm_regmap_init_sunxi_rsb(rdev, axp20x->regmap_cfg);
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if (IS_ERR(axp20x->regmap)) {
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ret = PTR_ERR(axp20x->regmap);
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dev_err(&rdev->dev, "regmap init failed: %d\n", ret);
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return ret;
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}
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return axp20x_device_probe(axp20x);
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}
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static int axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
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{
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struct axp20x_dev *axp20x = sunxi_rsb_device_get_drvdata(rdev);
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return axp20x_device_remove(axp20x);
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}
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static const struct of_device_id axp20x_rsb_of_match[] = {
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{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
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{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
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{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
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{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
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{ .compatible = "x-powers,axp813", .data = (void *)AXP813_ID },
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{ },
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};
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MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
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static struct sunxi_rsb_driver axp20x_rsb_driver = {
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.driver = {
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.name = "axp20x-rsb",
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.of_match_table = of_match_ptr(axp20x_rsb_of_match),
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},
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.probe = axp20x_rsb_probe,
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.remove = axp20x_rsb_remove,
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};
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module_sunxi_rsb_driver(axp20x_rsb_driver);
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MODULE_DESCRIPTION("PMIC MFD sunXi RSB driver for AXP20X");
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MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
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MODULE_LICENSE("GPL v2");
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