If the clone mode enabled status is changing, a modeset needs to happen so that the resources can be reassigned
Signed-off-by: Jessica Zhang <quic_jessz...@quicinc.com> --- NOTE: As noted by Sima in the v1 [1], the DPU driver doesn't handle crtc_state->mode_changed correctly. However, fixing this is out of the scope of this series. We will post a separate series addressing these issues across the driver [1] https://lore.kernel.org/dri-devel/ZtW_S0j5AEr4g0QW@phenom.ffwll.local/ --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index b063c8fe4c0594772d84401fa56c9c21afc0ad18..9bb920d28bae2706b3892c167fe2bec3fd8857f4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1297,6 +1297,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, { struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc); + struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state, + crtc); struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc); struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc_state); @@ -1308,6 +1310,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, int rc = 0; bool needs_dirtyfb = dpu_crtc_needs_dirtyfb(crtc_state); + bool clone_mode_enabled = drm_crtc_in_clone_mode(old_crtc_state); + bool clone_mode_requested = drm_crtc_in_clone_mode(crtc_state); /* there might be cases where encoder needs a modeset too */ drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) { @@ -1315,6 +1319,10 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, crtc_state->mode_changed = true; } + if ((clone_mode_requested && !clone_mode_enabled) || + (!clone_mode_requested && clone_mode_enabled)) + crtc_state->mode_changed = true; + if (drm_atomic_crtc_needs_modeset(crtc_state)) { rc = dpu_crtc_assign_resources(crtc, crtc_state); if (rc < 0) -- 2.34.1
