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| author | Petr Mladek <pmladek@suse.com> | 2021-11-02 10:39:27 +0100 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2021-11-02 10:39:27 +0100 |
| commit | 40e64a88dadcfa168914065baf7f035de957bbe0 (patch) | |
| tree | 06c8c4a9e6c1b478aa6851794c6a33bec1ce6ec4 /drivers/platform/x86/intel/smartconnect.c | |
| parent | 24a1dffbecafeb00d8830985eb7a318e37aabc4e (diff) | |
| parent | 6a7ca80f4033c9cf3003625b2ef8b497f4ec44da (diff) | |
| download | lwn-40e64a88dadcfa168914065baf7f035de957bbe0.tar.gz lwn-40e64a88dadcfa168914065baf7f035de957bbe0.zip | |
Merge branch 'for-5.16-vsprintf-pgp' into for-linus
Diffstat (limited to 'drivers/platform/x86/intel/smartconnect.c')
| -rw-r--r-- | drivers/platform/x86/intel/smartconnect.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/smartconnect.c b/drivers/platform/x86/intel/smartconnect.c new file mode 100644 index 000000000000..64c2dc93472f --- /dev/null +++ b/drivers/platform/x86/intel/smartconnect.c @@ -0,0 +1,44 @@ +// 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); |