mfd: mp2629: Add support for mps battery charger (06081646) · Commits · 戴 / test

drivers/mfd/Kconfig

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		@@ -434,6 +434,15 @@ config MFD_MC13XXX_I2C
		help
		Select this if your MC13xxx is connected via an I2C bus.

		config MFD_MP2629
		tristate "Monolithic Power Systems MP2629 ADC and Battery charger"
		depends on I2C
		select REGMAP_I2C
		help
		Select this option to enable support for Monolithic Power Systems
		battery charger. This provides ADC, thermal and battery charger power
		management functions.

		config MFD_MXS_LRADC
		tristate "Freescale i.MX23/i.MX28 LRADC"
		depends on ARCH_MXS \|\| COMPILE_TEST

drivers/mfd/Makefile

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		@@ -170,6 +170,8 @@ obj-$(CONFIG_MFD_MAX8925) += max8925.o
		obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o
		obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o

		obj-$(CONFIG_MFD_MP2629) += mp2629.o

		pcf50633-objs := pcf50633-core.o pcf50633-irq.o
		obj-$(CONFIG_MFD_PCF50633) += pcf50633.o
		obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o

drivers/mfd/mp2629.c

0 → 100644

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		// SPDX-License-Identifier: GPL-2.0+
		/*
		* MP2629 parent driver for ADC and battery charger
		*
		* Copyright 2020 Monolithic Power Systems, Inc
		*
		* Author: Saravanan Sekar <sravanhome@gmail.com>
		*/

		#include <linux/i2c.h>
		#include <linux/kernel.h>
		#include <linux/mfd/core.h>
		#include <linux/mfd/mp2629.h>
		#include <linux/module.h>
		#include <linux/platform_device.h>
		#include <linux/regmap.h>
		#include <linux/slab.h>

		static const struct mfd_cell mp2629_cell[] = {
		{
		.name = "mp2629_adc",
		.of_compatible = "mps,mp2629_adc",
		},
		{
		.name = "mp2629_charger",
		.of_compatible = "mps,mp2629_charger",
		}
		};

		static const struct regmap_config mp2629_regmap_config = {
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = 0x17,
		};

		static int mp2629_probe(struct i2c_client *client)
		{
		struct mp2629_data *ddata;
		int ret;

		ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
		if (!ddata)
		return -ENOMEM;

		ddata->dev = &client->dev;
		i2c_set_clientdata(client, ddata);

		ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
		if (IS_ERR(ddata->regmap)) {
		dev_err(ddata->dev, "Failed to allocate regmap\n");
		return PTR_ERR(ddata->regmap);
		}

		ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell,
		ARRAY_SIZE(mp2629_cell), NULL, 0, NULL);
		if (ret)
		dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret);

		return ret;
		}

		static const struct of_device_id mp2629_of_match[] = {
		{ .compatible = "mps,mp2629"},
		{ }
		};
		MODULE_DEVICE_TABLE(of, mp2629_of_match);

		static struct i2c_driver mp2629_driver = {
		.driver = {
		.name = "mp2629",
		.of_match_table = mp2629_of_match,
		},
		.probe_new = mp2629_probe,
		};
		module_i2c_driver(mp2629_driver);

		MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
		MODULE_DESCRIPTION("MP2629 Battery charger parent driver");
		MODULE_LICENSE("GPL");

include/linux/mfd/mp2629.h

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		/* SPDX-License-Identifier: GPL-2.0+ */
		/*
		* Copyright 2020 Monolithic Power Systems, Inc
		*/

		#ifndef __MP2629_H__
		#define __MP2629_H__

		#include <linux/device.h>
		#include <linux/regmap.h>

		struct mp2629_data {
		struct device *dev;
		struct regmap *regmap;
		};

		#endif

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