162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0+ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#include <linux/acpi.h> 762306a36Sopenharmony_ci#include <linux/module.h> 862306a36Sopenharmony_ci 962306a36Sopenharmony_ciMODULE_LICENSE("GPL"); 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_cistatic int smartconnect_acpi_init(struct acpi_device *acpi) 1262306a36Sopenharmony_ci{ 1362306a36Sopenharmony_ci unsigned long long value; 1462306a36Sopenharmony_ci acpi_status status; 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value); 1762306a36Sopenharmony_ci if (ACPI_FAILURE(status)) 1862306a36Sopenharmony_ci return -EINVAL; 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci if (value & 0x1) { 2162306a36Sopenharmony_ci dev_info(&acpi->dev, "Disabling Intel Smart Connect\n"); 2262306a36Sopenharmony_ci status = acpi_execute_simple_method(acpi->handle, "SAOS", 0); 2362306a36Sopenharmony_ci } 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci return 0; 2662306a36Sopenharmony_ci} 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_cistatic const struct acpi_device_id smartconnect_ids[] = { 2962306a36Sopenharmony_ci {"INT33A0", 0}, 3062306a36Sopenharmony_ci {"", 0} 3162306a36Sopenharmony_ci}; 3262306a36Sopenharmony_ciMODULE_DEVICE_TABLE(acpi, smartconnect_ids); 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistatic struct acpi_driver smartconnect_driver = { 3562306a36Sopenharmony_ci .owner = THIS_MODULE, 3662306a36Sopenharmony_ci .name = "intel_smart_connect", 3762306a36Sopenharmony_ci .class = "intel_smart_connect", 3862306a36Sopenharmony_ci .ids = smartconnect_ids, 3962306a36Sopenharmony_ci .ops = { 4062306a36Sopenharmony_ci .add = smartconnect_acpi_init, 4162306a36Sopenharmony_ci }, 4262306a36Sopenharmony_ci}; 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_cimodule_acpi_driver(smartconnect_driver); 45