[Intel-gfx] [PATCH 13/20] drm/i915: use current scaler state during readout_hw_state.

[Chandra Konduru]

During readout_hw_state, rebuild crtc scaler_state from hw state:
 - crtc scaler id
 - scaler users
 - scaling ratios

Signed-off-by: Chandra Konduru <chandra.konduru at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index aae4a22..834ea46 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8756,6 +8756,11 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
 
 	intel_get_pipe_timings(crtc, pipe_config);
 
+	if (INTEL_INFO(dev)->gen >= 9) {
+		skl_init_scalers(dev, crtc->pipe, pipe_config);
+		skl_update_scaling_ratio(dev, pipe_config);
+	}
+
 	pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
 	if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
 		if (IS_SKYLAKE(dev))
-- 
1.7.9.5