[PATCH v2 12/18] drm/i915: Skip some bw_state readout on pre-icl

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We only compute bw_state->data_rate and bw_state->num_active_planes
on icl+. Do the same during readout so that we don't leave random
junk inside the state.

v2: Skip the whole intel_bw_crtc_update() (Vinod)

Reviewed-by: Vinod Govindapillai <vinod.govindapillai at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_bw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 30e6f33d6f30..e4d79b496e12 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -1441,7 +1441,8 @@ void intel_bw_update_hw_state(struct intel_display *display)
 		if (crtc_state->hw.active)
 			bw_state->active_pipes |= BIT(pipe);
 
-		intel_bw_crtc_update(bw_state, crtc_state);
+		if (DISPLAY_VER(display) >= 11)
+			intel_bw_crtc_update(bw_state, crtc_state);
 	}
 }
 
-- 
2.45.3