[PATCH 10/12] drm/i915/display: Write and read back the casf registers

[Nemesa Garg]

Write the casf registers bits to enable the sharpness
using casf_compute_config. casf_get_config is called
to verify the state.

Signed-off-by: Nemesa Garg <nemesa.garg at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c |  4 ++++
 drivers/gpu/drm/i915/display/skl_scaler.c    | 18 ++++++++++++------
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3d444d450179..3b3bc08e9f51 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4248,6 +4248,10 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 		return ret;
 	}
 
+	ret = intel_casf_compute_config(crtc_state);
+	if (ret)
+		return ret;
+
 	if (DISPLAY_VER(dev_priv) >= 9) {
 		if (intel_crtc_needs_modeset(crtc_state) ||
 		    intel_crtc_needs_fastset(crtc_state) ||
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
index 93a847c05535..6ddc111d5c29 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -964,16 +964,22 @@ void skl_scaler_get_config(struct intel_crtc_state *crtc_state)
 			continue;
 
 		id = i;
-		crtc_state->pch_pfit.enabled = true;
+
+		if (HAS_CASF(display) && id == 1)
+			intel_casf_sharpness_get_config(crtc_state);
+
+		if (!crtc_state->hw.casf_params.casf_enable)
+			crtc_state->pch_pfit.enabled = true;
 
 		pos = intel_de_read(display, SKL_PS_WIN_POS(crtc->pipe, i));
 		size = intel_de_read(display, SKL_PS_WIN_SZ(crtc->pipe, i));
 
-		drm_rect_init(&crtc_state->pch_pfit.dst,
-			      REG_FIELD_GET(PS_WIN_XPOS_MASK, pos),
-			      REG_FIELD_GET(PS_WIN_YPOS_MASK, pos),
-			      REG_FIELD_GET(PS_WIN_XSIZE_MASK, size),
-			      REG_FIELD_GET(PS_WIN_YSIZE_MASK, size));
+		if (!crtc_state->hw.casf_params.casf_enable)
+			drm_rect_init(&crtc_state->pch_pfit.dst,
+				      REG_FIELD_GET(PS_WIN_XPOS_MASK, pos),
+				      REG_FIELD_GET(PS_WIN_YPOS_MASK, pos),
+				      REG_FIELD_GET(PS_WIN_XSIZE_MASK, size),
+				      REG_FIELD_GET(PS_WIN_YSIZE_MASK, size));
 
 		scaler_state->scalers[i].in_use = true;
 		break;
-- 
2.25.1