drm/komeda: Add komeda_kms_check

Implement komeda_kms_check to add all affected_planes (even unchanged) to
drm_atomic_state. since komeda need to re-calculate the resources
assumption in every commit.

v2: Rebase

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 55b103ae3e2f1d879d21fcec6018545fbc8cfa7b..e8573b03021fc920d9e2dceede5b61991ec49703 100644 (file)
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -100,9 +100,37 @@ static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = {
        .atomic_commit_tail = komeda_kms_commit_tail,
 };
 
+static int komeda_kms_check(struct drm_device *dev,
+                           struct drm_atomic_state *state)
+{
+       struct drm_crtc *crtc;
+       struct drm_crtc_state *old_crtc_st, *new_crtc_st;
+       int i, err;
+
+       err = drm_atomic_helper_check_modeset(dev, state);
+       if (err)
+               return err;
+
+       /* komeda need to re-calculate resource assumption in every commit
+        * so need to add all affected_planes (even unchanged) to
+        * drm_atomic_state.
+        */
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_st, new_crtc_st, i) {
+               err = drm_atomic_add_affected_planes(state, crtc);
+               if (err)
+                       return err;
+       }
+
+       err = drm_atomic_helper_check_planes(dev, state);
+       if (err)
+               return err;
+
+       return 0;
+}
+
 static const struct drm_mode_config_funcs komeda_mode_config_funcs = {
        .fb_create              = komeda_fb_create,
-       .atomic_check           = drm_atomic_helper_check,
+       .atomic_check           = komeda_kms_check,
        .atomic_commit          = drm_atomic_helper_commit,
 };