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