Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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

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

drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c

+11 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/acpi.h>

#include <linux/slab.h>

#include <linux/power_supply.h>

#include <linux/pm_runtime.h>

#include <acpi/video.h>

#include <drm/drmP.h>

#include <drm/drm_crtc_helper.h>
@@ -333,6 +334,16 @@ int amdgpu_atif_handler(struct amdgpu_device *adev, 
#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 */



	/* We've handled the event, stop the notifier chain. The ACPI interface