summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nouveau_pm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_pm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_pm.c33
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index 9f7b158f582..fb846a3fef1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -27,6 +27,10 @@
#include "nouveau_drv.h"
#include "nouveau_pm.h"
+#ifdef CONFIG_ACPI
+#include <linux/acpi.h>
+#endif
+#include <linux/power_supply.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
@@ -418,8 +422,7 @@ nouveau_hwmon_init(struct drm_device *dev)
return ret;
}
dev_set_drvdata(hwmon_dev, dev);
- ret = sysfs_create_group(&hwmon_dev->kobj,
- &hwmon_attrgroup);
+ ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
if (ret) {
NV_ERROR(dev,
"Unable to create hwmon sysfs file: %d\n", ret);
@@ -446,6 +449,25 @@ nouveau_hwmon_fini(struct drm_device *dev)
#endif
}
+#ifdef CONFIG_ACPI
+static int
+nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
+{
+ struct drm_nouveau_private *dev_priv =
+ container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
+ struct drm_device *dev = dev_priv->dev;
+ struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
+
+ if (strcmp(entry->device_class, "ac_adapter") == 0) {
+ bool ac = power_supply_is_system_supplied();
+
+ NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
+ }
+
+ return NOTIFY_OK;
+}
+#endif
+
int
nouveau_pm_init(struct drm_device *dev)
{
@@ -485,6 +507,10 @@ nouveau_pm_init(struct drm_device *dev)
nouveau_sysfs_init(dev);
nouveau_hwmon_init(dev);
+#ifdef CONFIG_ACPI
+ pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
+ register_acpi_notifier(&pm->acpi_nb);
+#endif
return 0;
}
@@ -503,6 +529,9 @@ nouveau_pm_fini(struct drm_device *dev)
nouveau_perf_fini(dev);
nouveau_volt_fini(dev);
+#ifdef CONFIG_ACPI
+ unregister_acpi_notifier(&pm->acpi_nb);
+#endif
nouveau_hwmon_fini(dev);
nouveau_sysfs_fini(dev);
}