Commit 1b0f568d authored by Alex Deucher's avatar Alex Deucher

drm/amdgpu/atif: Send a hotplug event when we get dgpu display request

On PX systems, if the platform supports hotplug events ATIF while the
dGPU is powered down, handle the event and alert userspace.
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent efc83cf4
...@@ -25,6 +25,7 @@ ...@@ -25,6 +25,7 @@
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/power_supply.h> #include <linux/power_supply.h>
#include <linux/pm_runtime.h>
#include <acpi/video.h> #include <acpi/video.h>
#include <drm/drmP.h> #include <drm/drmP.h>
#include <drm/drm_crtc_helper.h> #include <drm/drm_crtc_helper.h>
...@@ -333,6 +334,16 @@ int amdgpu_atif_handler(struct amdgpu_device *adev, ...@@ -333,6 +334,16 @@ int amdgpu_atif_handler(struct amdgpu_device *adev,
#endif #endif
} }
} }
if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
if ((adev->flags & AMD_IS_PX) &&
amdgpu_atpx_dgpu_req_power_for_displays()) {
pm_runtime_get_sync(adev->ddev->dev);
/* Just fire off a uevent and let userspace tell us what to do */
drm_helper_hpd_irq_event(adev->ddev);
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
}
}
/* TODO: check other events */ /* TODO: check other events */
/* We've handled the event, stop the notifier chain. The ACPI interface /* We've handled the event, stop the notifier chain. The ACPI interface
......
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