@@ -16,6 +16,9 @@
#include <linux/thermal.h>
#include "acpi_thermal_rel.h"
+#define INT3400_THERMAL_ART_CHANGED 0x83
+#define INT3400_THERMAL_TRT_CHANGED 0x84
+
enum int3400_thermal_uuid {
INT3400_THERMAL_PASSIVE_1,
INT3400_THERMAL_ACTIVE,
@@ -240,6 +243,42 @@ static struct thermal_zone_params int3400_thermal_params = {
.no_hwmon = true,
};
+static void int3400_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct platform_device *pdev = data;
+ struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
+ int count;
+ struct art *arts;
+ struct trt *trts;
+ int result;
+
+ if (!priv)
+ return;
+
+ switch (event) {
+ case INT3400_THERMAL_ART_CHANGED:
+ result = acpi_parse_art(priv->adev->handle, &count,
+ &arts, false);
+ if (result)
+ return;
+ priv->art_count = count;
+ priv->arts = arts;
+ kobject_uevent(&pdev->dev.kobj, KOBJ_CHANGE);
+ return;
+ case INT3400_THERMAL_TRT_CHANGED:
+ result = acpi_parse_trt(priv->adev->handle, &count,
+ &trts, false);
+ if (result)
+ return;
+ priv->trt_count = count;
+ priv->trts = trts;
+ kobject_uevent(&pdev->dev.kobj, KOBJ_CHANGE);
+ return;
+ default:
+ return;
+ }
+}
+
static int int3400_thermal_probe(struct platform_device *pdev)
{
struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
@@ -287,13 +326,22 @@ static int int3400_thermal_probe(struct platform_device *pdev)
priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
priv->adev->handle);
+ result = acpi_install_notify_handler(priv->adev->handle,
+ ACPI_DEVICE_NOTIFY, int3400_notify, (void *)pdev);
+ if (result)
+ goto free_misc;
+
result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
if (result)
- goto free_zone;
+ goto free_notify;
return 0;
-free_zone:
+free_notify:
+ acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
+ int3400_notify);
+free_misc:
+ acpi_thermal_rel_misc_device_remove(priv->adev->handle);
thermal_zone_device_unregister(priv->thermal);
free_trt:
kfree(priv->trts);
@@ -311,6 +359,8 @@ static int int3400_thermal_remove(struct platform_device *pdev)
if (!priv->rel_misc_dev_res)
acpi_thermal_rel_misc_device_remove(priv->adev->handle);
+ acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
+ int3400_notify);
sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
thermal_zone_device_unregister(priv->thermal);
kfree(priv->trts);
In some cases, the _ART/_TRT data may be changed at runtime, and ACPI notification 0x83/0x84 will be delivered to INT3400 ACPI device object when this happens. Add this support in int3400_thermal driver. Signed-off-by: Zhang Rui <rui.zhang@intel.com> --- drivers/thermal/int340x_thermal/int3400_thermal.c | 54 ++++++++++++++++++++++- 1 file changed, 52 insertions(+), 2 deletions(-)