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// SPDX-License-Identifier: GPL-2.0
/*
* Intel Cherry Trail ACPI INT33FE pseudo device driver for devices with
* USB Micro-B connector (e.g. without of FUSB302 USB Type-C controller)
*
* Copyright (C) 2019 Yauhen Kharuzhy <jekhor@gmail.com>
*
* At least one Intel Cherry Trail based device which ship with Windows 10
* (Lenovo YogaBook YB1-X91L/F tablet), have this weird INT33FE ACPI device
* with a CRS table with 2 I2cSerialBusV2 resources, for 2 different chips
* attached to various i2c busses:
* 1. The Whiskey Cove PMIC, which is also described by the INT34D3 ACPI device
* 2. TI BQ27542 Fuel Gauge Controller
*
* So this driver is a stub / pseudo driver whose only purpose is to
* instantiate i2c-client for battery fuel gauge, so that standard i2c driver
* for these chip can bind to the it.
*/
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/usb/pd.h>
#include "intel_cht_int33fe_common.h"
static const char * const bq27xxx_suppliers[] = { "bq25890-charger" };
static const struct property_entry bq27xxx_props[] = {
PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq27xxx_suppliers),
{ }
};
static const struct software_node bq27xxx_node = {
.properties = bq27xxx_props,
};
int cht_int33fe_microb_probe(struct cht_int33fe_data *data)
{
struct device *dev = data->dev;
struct i2c_board_info board_info;
memset(&board_info, 0, sizeof(board_info));
strscpy(board_info.type, "bq27542", ARRAY_SIZE(board_info.type));
board_info.dev_name = "bq27542";
board_info.swnode = &bq27xxx_node;
data->battery_fg = i2c_acpi_new_device(dev, 1, &board_info);
return PTR_ERR_OR_ZERO(data->battery_fg);
}
int cht_int33fe_microb_remove(struct cht_int33fe_data *data)
{
i2c_unregister_device(data->battery_fg);
return 0;
}
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