[RFC v2 1/6] drm/i915/scaler: Add and compute scaling factors

[Mitul Golani]

Add scaling factors to scaler_state for a perticular scaler user,
use it later to compute scaler prefill latency. Also to extend this
when either pipe or plane scaler is in use.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 2 ++
 drivers/gpu/drm/i915/display/skl_scaler.c          | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index b71416ff5b7f..28b2861df42b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -710,6 +710,8 @@ struct intel_initial_plane_config {
 struct intel_scaler {
 	u32 mode;
 	bool in_use;
+	int hscale;
+	int vscale;
 };
 
 struct intel_crtc_scaler_state {
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
index 11f73659c1b6..e00c6830ef65 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -423,6 +423,9 @@ static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_stat
 
 			return -EINVAL;
 		}
+
+		scaler_state->scalers[*scaler_id].hscale = hscale;
+		scaler_state->scalers[*scaler_id].vscale = vscale;
 	}
 
 	drm_dbg_kms(display->drm, "Attached scaler id %u.%u to %s:%d\n",
-- 
2.46.0