When doing suspend/resume drivers usually use the drm_atomic_helper_suspend/drm_atomic_helper_resume pair for saving the state and then re-comitting it.
The problems is that drm_crtc_state has a bool field called color_mgmt_changed, which mali-dp and other drivers uses it to detect if coefficients need to be reprogrammed, but that never happens because the save state has color_mgmt_changed set to 0.
Fix that by setting color_mgmt_changed to true if the crtc duplicated state differs from the reset state.
Signed-off-by: Alexandru Gheorghe alexandru-cosmin.gheorghe@arm.com --- drivers/gpu/drm/drm_atomic_helper.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 6dd5036545ec..e88aa62bc822 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3196,8 +3196,13 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state, for_each_new_plane_in_state(state, plane, new_plane_state, i) state->planes[i].old_state = plane->state;
- for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) + for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { state->crtcs[i].old_state = crtc->state; + new_crtc_state->color_mgmt_changed = + new_crtc_state->degamma_lut != crtc->state->degamma_lut || + new_crtc_state->ctm != crtc->state->ctm || + new_crtc_state->gamma_lut != crtc->state->gamma_lut; + }
for_each_new_connector_in_state(state, connector, new_conn_state, i) state->connectors[i].old_state = connector->state;