intel_dsb_prepare
crtc_state->dsb_color = intel_dsb_prepare(state, crtc, INTEL_DSB_0, 1024);
crtc_state->dsb_color = intel_dsb_prepare(state, crtc, INTEL_DSB_1, 1024);
new_crtc_state->dsb_commit = intel_dsb_prepare(state, crtc, INTEL_DSB_0,
struct intel_dsb *intel_dsb_prepare(struct intel_atomic_state *state,