forked from luck/tmp_suning_uos_patched
0608164645
mp2629 is a highly-integrated switching-mode battery charge management device for single-cell Li-ion or Li-polymer battery. Add MFD core enables chip access for ADC driver for battery readings, and a power supply battery-charger driver Signed-off-by: Saravanan Sekar <sravanhome@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* MP2629 parent driver for ADC and battery charger
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*
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* Copyright 2020 Monolithic Power Systems, Inc
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*
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* Author: Saravanan Sekar <sravanhome@gmail.com>
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*/
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/mp2629.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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static const struct mfd_cell mp2629_cell[] = {
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{
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.name = "mp2629_adc",
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.of_compatible = "mps,mp2629_adc",
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},
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{
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.name = "mp2629_charger",
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.of_compatible = "mps,mp2629_charger",
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}
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};
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static const struct regmap_config mp2629_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 0x17,
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};
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static int mp2629_probe(struct i2c_client *client)
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{
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struct mp2629_data *ddata;
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int ret;
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ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
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if (!ddata)
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return -ENOMEM;
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ddata->dev = &client->dev;
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i2c_set_clientdata(client, ddata);
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ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
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if (IS_ERR(ddata->regmap)) {
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dev_err(ddata->dev, "Failed to allocate regmap\n");
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return PTR_ERR(ddata->regmap);
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}
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ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell,
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ARRAY_SIZE(mp2629_cell), NULL, 0, NULL);
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if (ret)
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dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret);
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return ret;
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}
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static const struct of_device_id mp2629_of_match[] = {
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{ .compatible = "mps,mp2629"},
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{ }
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};
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MODULE_DEVICE_TABLE(of, mp2629_of_match);
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static struct i2c_driver mp2629_driver = {
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.driver = {
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.name = "mp2629",
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.of_match_table = mp2629_of_match,
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},
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.probe_new = mp2629_probe,
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};
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module_i2c_driver(mp2629_driver);
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MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
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MODULE_DESCRIPTION("MP2629 Battery charger parent driver");
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MODULE_LICENSE("GPL");
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