drm/tegra: Assign plane type before registration

commit 9ff4fdf4f44b69237c0afc1d3a8dac916ce66f3e upstream.

Changes to a plane's type after it has been registered aren't propagated
to userspace automatically. This could possibly be achieved by updating
the property, but since we can already determine which type this should
be before the registration, passing in the right type from the start is
a much better solution.

Suggested-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Cc: stable@vger.kernel.org
Fixes: 473079549f27 ("drm/tegra: dc: Add Tegra186 support")
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20250421-tegra-drm-primary-v2-1-7f740c4c2121@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 923899b95c8811a64a1c58d0077d89dc8545b4be..ebc0cd4d7862aac8938588edb2508dd304943e17 100644 (file)
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1103,10 +1103,16 @@ static struct drm_plane *tegra_dc_add_shared_planes(struct drm_device *drm,
                if (wgrp->dc == dc->pipe) {
                        for (j = 0; j < wgrp->num_windows; j++) {
                                unsigned int index = wgrp->windows[j];
+                               enum drm_plane_type type;
+
+                               if (primary)
+                                       type = DRM_PLANE_TYPE_OVERLAY;
+                               else
+                                       type = DRM_PLANE_TYPE_PRIMARY;
 
                                plane = tegra_shared_plane_create(drm, dc,
                                                                  wgrp->index,
-                                                                 index);
+                                                                 index, type);
                                if (IS_ERR(plane))
                                        return plane;
 
@@ -1114,10 +1120,8 @@ static struct drm_plane *tegra_dc_add_shared_planes(struct drm_device *drm,
                                 * Choose the first shared plane owned by this
                                 * head as the primary plane.
                                 */
-                               if (!primary) {
-                                       plane->type = DRM_PLANE_TYPE_PRIMARY;
+                               if (!primary)
                                        primary = plane;
-                               }
                        }
                }
        }

diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 767fb440a79d9c463d8714641da0b6d7ac55308b..11307a80d57583691d91aa54ca78b730c382fecc 100644 (file)
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -533,9 +533,9 @@ static const struct drm_plane_helper_funcs tegra_shared_plane_helper_funcs = {
 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
                                            struct tegra_dc *dc,
                                            unsigned int wgrp,
-                                           unsigned int index)
+                                           unsigned int index,
+                                           enum drm_plane_type type)
 {
-       enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
        struct tegra_drm *tegra = drm->dev_private;
        struct tegra_display_hub *hub = tegra->hub;
        /* planes can be assigned to arbitrary CRTCs */

diff --git a/drivers/gpu/drm/tegra/hub.h b/drivers/gpu/drm/tegra/hub.h
index 767a60d9313cc355d45f49a930247942ffebeab1..646d6a57c0aed25b96b7d2276d390bf9fd1c334e 100644 (file)
--- a/drivers/gpu/drm/tegra/hub.h
+++ b/drivers/gpu/drm/tegra/hub.h
@@ -81,7 +81,8 @@ void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
                                            struct tegra_dc *dc,
                                            unsigned int wgrp,
-                                           unsigned int index);
+                                           unsigned int index,
+                                           enum drm_plane_type type);
 
 int tegra_display_hub_atomic_check(struct drm_device *drm,
                                   struct drm_atomic_state *state);