| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> |
| */ |
| |
| #include <linux/acpi.h> |
| #include <linux/module.h> |
| |
| MODULE_LICENSE("GPL"); |
| |
| static int smartconnect_acpi_init(struct acpi_device *acpi) |
| { |
| unsigned long long value; |
| acpi_status status; |
| |
| status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value); |
| if (ACPI_FAILURE(status)) |
| return -EINVAL; |
| |
| if (value & 0x1) { |
| dev_info(&acpi->dev, "Disabling Intel Smart Connect\n"); |
| status = acpi_execute_simple_method(acpi->handle, "SAOS", 0); |
| } |
| |
| return 0; |
| } |
| |
| static const struct acpi_device_id smartconnect_ids[] = { |
| {"INT33A0", 0}, |
| {"", 0} |
| }; |
| MODULE_DEVICE_TABLE(acpi, smartconnect_ids); |
| |
| static struct acpi_driver smartconnect_driver = { |
| .owner = THIS_MODULE, |
| .name = "intel_smart_connect", |
| .class = "intel_smart_connect", |
| .ids = smartconnect_ids, |
| .ops = { |
| .add = smartconnect_acpi_init, |
| }, |
| }; |
| |
| module_acpi_driver(smartconnect_driver); |
