github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-12 16:18:45 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

platform/x86: intel/smartconnect: Convert ACPI driver to a platform one

Browse Source 
In all cases in which a struct acpi_driver is used for binding a driver
to an ACPI device object, a corresponding platform device is created by
the ACPI core and that device is regarded as a proper representation of
underlying hardware.  Accordingly, a struct platform_driver should be
used by driver code to bind to that device.  There are multiple reasons
why drivers should not bind directly to ACPI device objects [1].

Overall, it is better to bind drivers to platform devices than to their
ACPI companions, so convert the Intel Smart Connect disabling ACPI
driver to a platform one.

While this is not expected to alter functionality, it changes sysfs
layout and so it will be visible to user space.

Link: https://lore.kernel.org/all/2396510.ElGaqSPkdT@rafael.j.wysocki/ [1]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/24282289.6Emhk5qWAg@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2026-02-28 16:28:19 +01:00 committed by Ilpo Järvinen
parent 163a68a31f
commit 8a44bd3ffd
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 12 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/platform/x86/intel/smartconnect.c
View File

@ -5,22 +5,24 @@
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/platform_device.h>
MODULE_DESCRIPTION("Intel Smart Connect disabling driver");
MODULE_LICENSE("GPL");
static int smartconnect_acpi_init(struct acpi_device *acpi)
static int smartconnect_acpi_probe(struct platform_device *pdev)
{
acpi_handle handle = ACPI_HANDLE(&pdev->dev);
unsigned long long value;
acpi_status status;
status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);
status = acpi_evaluate_integer(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);
dev_info(&pdev->dev, "Disabling Intel Smart Connect\n");
status = acpi_execute_simple_method(handle, "SAOS", 0);
}
return 0;
@ -32,13 +34,12 @@ static const struct acpi_device_id smartconnect_ids[] = {
};
MODULE_DEVICE_TABLE(acpi, smartconnect_ids);
static struct acpi_driver smartconnect_driver = {
.name = "intel_smart_connect",
.class = "intel_smart_connect",
.ids = smartconnect_ids,
.ops = {
.add = smartconnect_acpi_init,
static struct platform_driver smartconnect_driver = {
.probe = smartconnect_acpi_probe,
.driver = {
.name = "intel_smart_connect",
.acpi_match_table = smartconnect_ids,
},
};
module_acpi_driver(smartconnect_driver);
module_platform_driver(smartconnect_driver);