8824ee8573
The X-Powers AXP806 is a new PMIC that is paired with Allwinner's A80 SoC, along with a master AXP809 PMIC. This PMIC has a new register layout, and supports some functions not seen in other X-Powers PMICs, such as master-slave mode, or having multiple AXP806 PMICs on the same bus with address space extension, or supporting both I2C and RSB mode. I2C has not been tested. This patch adds support for the interrupts of the PMIC. A regulator sub-device is enabled, but actual regulator support will come in a later patch. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
83 lines
2.2 KiB
C
83 lines
2.2 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,axp806", .data = (void *)AXP806_ID },
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{ .compatible = "x-powers,axp809", .data = (void *)AXP809_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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