[PATCH 5/5] drm/i915/display: Load the lut values and enable sharpness

[Nemesa Garg <nemesa.garg@xxxxxxxxx>]

Load the lut values during pipe enable.

v2: Add the display version check
v3: Fix build issue

Signed-off-by: Nemesa Garg <nemesa.garg@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_crtc.c         |  3 +++
 drivers/gpu/drm/i915/display/intel_display.c      |  6 ++++++
 .../gpu/drm/i915/display/intel_display_types.h    |  2 ++
 drivers/gpu/drm/i915/display/skl_scaler.c         | 15 ++++++++++++++-
 4 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index a2c528d707f4..b4d7ae7b3db8 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -388,6 +388,9 @@ int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
 
 	drm_WARN_ON(&dev_priv->drm, drm_crtc_index(&crtc->base) != crtc->pipe);
 
+	if (DISPLAY_VER(dev_priv) >= 20)
+		drm_crtc_create_sharpness_strength_property(&crtc->base);
+
 	return 0;
 
 fail:
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f5e837310309..e81135f8daf9 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1881,6 +1881,9 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
 			intel_crtc_wait_for_next_vblank(wa_crtc);
 		}
 	}
+
+	if (new_crtc_state->hw.casf_params.strength_changed)
+		intel_filter_lut_load(crtc, new_crtc_state);
 }
 
 void ilk_pfit_disable(const struct intel_crtc_state *old_crtc_state)
@@ -7203,6 +7206,9 @@ static void intel_pre_update_crtc(struct intel_atomic_state *state,
 			intel_vrr_set_transcoder_timings(new_crtc_state);
 	}
 
+	if (intel_casf_strength_changed(state))
+		intel_casf_enable(new_crtc_state);
+
 	intel_fbc_update(state, crtc);
 
 	drm_WARN_ON(&i915->drm, !intel_display_power_is_enabled(i915, POWER_DOMAIN_DC_OFF));
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 19a671848f42..ad4138dcea8b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -920,6 +920,8 @@ struct intel_casf {
 	struct scaler_filter_coeff coeff[SCALER_FILTER_NUM_TAPS];
 	u8 win_size;
 	bool need_scaler;
+	bool strength_changed;
+	u8 strength;
 };
 
 void intel_io_mmio_fw_write(void *ctx, i915_reg_t reg, u32 val);
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
index 5311ef6c51d1..19f6cf62164c 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -7,6 +7,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
+#include "intel_casf_regs.h"
 #include "skl_scaler.h"
 #include "skl_universal_plane.h"
 
@@ -869,12 +870,13 @@ void skl_scaler_get_config(struct intel_crtc_state *crtc_state)
 	struct intel_display *display = to_intel_display(crtc_state);
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 	int id = -1;
 	int i;
 
 	/* find scaler attached to this pipe */
 	for (i = 0; i < crtc->num_scalers; i++) {
-		u32 ctl, pos, size;
+		u32 ctl, pos, size, sharp;
 
 		ctl = intel_de_read(display, SKL_PS_CTRL(crtc->pipe, i));
 		if ((ctl & (PS_SCALER_EN | PS_BINDING_MASK)) != (PS_SCALER_EN | PS_BINDING_PIPE))
@@ -882,6 +884,17 @@ void skl_scaler_get_config(struct intel_crtc_state *crtc_state)
 
 		id = i;
 
+		if (DISPLAY_VER(display) >= 20) {
+			sharp = intel_de_read(display, SHARPNESS_CTL(display, cpu_transcoder));
+			if (sharp & FILTER_EN) {
+				crtc_state->hw.casf_params.strength =
+					REG_FIELD_GET(FILTER_STRENGTH_MASK, sharp) - 16;
+				crtc_state->hw.casf_params.need_scaler = true;
+				crtc_state->hw.casf_params.win_size =
+					REG_FIELD_GET(FILTER_SIZE_MASK, sharp);
+			}
+		}
+
 		if (!crtc_state->hw.casf_params.need_scaler)
 			crtc_state->pch_pfit.enabled = true;
 
-- 
2.25.1