diff options
| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2024-08-06 12:50:44 +0200 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2024-08-19 15:17:04 +0200 |
| commit | cb8f81c1753187995b7a43e79c12959f14eb32d3 (patch) | |
| tree | 692e24746344eeedd740fe22e0820c37bde82fba /drivers/gpu/drm/xe/display | |
| parent | 492be2a070f023c66aaef6ebd664567fda28c2a6 (diff) | |
drm/xe/display: Make display suspend/resume work on discrete
We should unpin before evicting all memory, and repin after GT resume.
This way, we preserve the contents of the framebuffers, and won't hang
on resume due to migration engine not being restored yet.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org # v6.8+
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240806105044.596842-3-maarten.lankhorst@linux.intel.com
Signed-off-by: Maarten Lankhorst,,, <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/display')
| -rw-r--r-- | drivers/gpu/drm/xe/display/xe_display.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c index 8b4fd90a9c35..30dfdac9f6fa 100644 --- a/drivers/gpu/drm/xe/display/xe_display.c +++ b/drivers/gpu/drm/xe/display/xe_display.c @@ -287,6 +287,27 @@ static bool suspend_to_idle(void) return false; } +static void xe_display_flush_cleanup_work(struct xe_device *xe) +{ + struct intel_crtc *crtc; + + for_each_intel_crtc(&xe->drm, crtc) { + struct drm_crtc_commit *commit; + + spin_lock(&crtc->base.commit_lock); + commit = list_first_entry_or_null(&crtc->base.commit_list, + struct drm_crtc_commit, commit_entry); + if (commit) + drm_crtc_commit_get(commit); + spin_unlock(&crtc->base.commit_lock); + + if (commit) { + wait_for_completion(&commit->cleanup_done); + drm_crtc_commit_put(commit); + } + } +} + void xe_display_pm_suspend(struct xe_device *xe, bool runtime) { struct intel_display *display = &xe->display; @@ -308,6 +329,8 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime) if (!runtime) intel_display_driver_suspend(xe); + xe_display_flush_cleanup_work(xe); + intel_dp_mst_suspend(xe); intel_hpd_cancel_work(xe); |