75c8cb2f4c
The AXP313a is a PMIC chip produced by X-Powers, it can be connected via an I2C bus. The name AXP1530 seems to appear as well, and this is what is used in the BSP driver. From all we know it's the same chip, just a different name. However we have only seen AXP313a chips in the wild, so go with this name. Compared to the other AXP PMICs it's a rather simple affair: just three DCDC converters, three LDOs, and no battery charging support. Describe the regmap and the MFD bits, along with the registers exposed via I2C. Aside from the various regulators, also describe the power key interrupts, and adjust the shutdown handler routine to use a different register than the other PMICs. Eventually advertise the device using the new compatible string. Signed-off-by: Martin Botka <martin.botka@somainline.org> Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20230524000012.15028-2-andre.przywara@arm.com Signed-off-by: Lee Jones <lee@kernel.org>
116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* I2C 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 I2C variants.
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*
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* Copyright (C) 2014 Carlo Caione
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*
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* Author: Carlo Caione <carlo@caione.org>
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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/i2c.h>
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#include <linux/module.h>
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#include <linux/mfd/axp20x.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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static int axp20x_i2c_probe(struct i2c_client *i2c)
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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(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
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if (!axp20x)
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return -ENOMEM;
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axp20x->dev = &i2c->dev;
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axp20x->irq = i2c->irq;
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dev_set_drvdata(axp20x->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_i2c(i2c, 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(&i2c->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 void axp20x_i2c_remove(struct i2c_client *i2c)
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{
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struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
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axp20x_device_remove(axp20x);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id axp20x_i2c_of_match[] = {
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{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
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{ .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
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{ .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
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{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
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{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
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{ .compatible = "x-powers,axp313a", .data = (void *)AXP313A_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,axp15060", .data = (void *)AXP15060_ID },
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{ },
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};
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MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
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#endif
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static const struct i2c_device_id axp20x_i2c_id[] = {
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{ "axp152", 0 },
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{ "axp202", 0 },
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{ "axp209", 0 },
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{ "axp221", 0 },
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{ "axp223", 0 },
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{ "axp313a", 0 },
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{ "axp803", 0 },
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{ "axp806", 0 },
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{ "axp15060", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id axp20x_i2c_acpi_match[] = {
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{
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.id = "INT33F4",
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.driver_data = AXP288_ID,
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},
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, axp20x_i2c_acpi_match);
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#endif
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static struct i2c_driver axp20x_i2c_driver = {
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.driver = {
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.name = "axp20x-i2c",
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.of_match_table = of_match_ptr(axp20x_i2c_of_match),
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.acpi_match_table = ACPI_PTR(axp20x_i2c_acpi_match),
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},
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.probe_new = axp20x_i2c_probe,
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.remove = axp20x_i2c_remove,
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.id_table = axp20x_i2c_id,
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};
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module_i2c_driver(axp20x_i2c_driver);
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MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
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MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
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MODULE_LICENSE("GPL");
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