[PATCH v2 6/9] drm/i915/casf: Constify crtc_state

[Ville Syrjala <ville.syrjala@linux.intel.com>]

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

Make the crtc_state const everywhere in the sharpness filter
code where it doesn't need to be mutated.

Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_casf.c | 8 ++++----
 drivers/gpu/drm/i915/display/intel_casf.h | 4 ++--
 drivers/gpu/drm/i915/display/skl_scaler.c | 8 ++++----
 drivers/gpu/drm/i915/display/skl_scaler.h | 2 +-
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_casf.c b/drivers/gpu/drm/i915/display/intel_casf.c
index 5a8ffb40d30d..f777aae3fc57 100644
--- a/drivers/gpu/drm/i915/display/intel_casf.c
+++ b/drivers/gpu/drm/i915/display/intel_casf.c
@@ -75,7 +75,7 @@ static void intel_casf_filter_lut_load(struct intel_crtc *crtc,
 			       sharpness_lut[i]);
 }
 
-void intel_casf_update_strength(struct intel_crtc_state *crtc_state)
+void intel_casf_update_strength(const 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);
@@ -174,7 +174,7 @@ static int casf_coeff_tap(int i)
 	return i % SCALER_FILTER_NUM_TAPS;
 }
 
-static u32 casf_coeff(struct intel_crtc_state *crtc_state, int t)
+static u32 casf_coeff(const struct intel_crtc_state *crtc_state, int t)
 {
 	struct scaler_filter_coeff value;
 	u32 coeff;
@@ -192,7 +192,7 @@ static u32 casf_coeff(struct intel_crtc_state *crtc_state, int t)
  * that are calculated and stored in pch_pfit.casf.coeff as per
  * SCALER_COEFFICIENT_FORMAT
  */
-static void intel_casf_write_coeff(struct intel_crtc_state *crtc_state)
+static void intel_casf_write_coeff(const 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);
@@ -264,7 +264,7 @@ void intel_casf_scaler_compute_config(struct intel_crtc_state *crtc_state)
 	}
 }
 
-void intel_casf_enable(struct intel_crtc_state *crtc_state)
+void intel_casf_enable(const 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);
diff --git a/drivers/gpu/drm/i915/display/intel_casf.h b/drivers/gpu/drm/i915/display/intel_casf.h
index b3fb0bcb3f5b..c4f984b73348 100644
--- a/drivers/gpu/drm/i915/display/intel_casf.h
+++ b/drivers/gpu/drm/i915/display/intel_casf.h
@@ -11,9 +11,9 @@
 struct intel_crtc_state;
 
 int intel_casf_compute_config(struct intel_crtc_state *crtc_state);
-void intel_casf_update_strength(struct intel_crtc_state *new_crtc_state);
+void intel_casf_update_strength(const struct intel_crtc_state *new_crtc_state);
 void intel_casf_sharpness_get_config(struct intel_crtc_state *crtc_state);
-void intel_casf_enable(struct intel_crtc_state *crtc_state);
+void intel_casf_enable(const struct intel_crtc_state *crtc_state);
 void intel_casf_disable(const struct intel_crtc_state *crtc_state);
 void intel_casf_scaler_compute_config(struct intel_crtc_state *crtc_state);
 bool intel_casf_needs_scaler(const struct intel_crtc_state *crtc_state);
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
index d8bf65c6b4a7..762f4bb46c2d 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -757,13 +757,13 @@ static void skl_scaler_setup_filter(struct intel_display *display,
 	}
 }
 
-void skl_scaler_setup_casf(struct intel_crtc_state *crtc_state)
+void skl_scaler_setup_casf(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct intel_display *display = to_intel_display(crtc);
-	struct drm_display_mode *adjusted_mode =
-	&crtc_state->hw.adjusted_mode;
-	struct intel_crtc_scaler_state *scaler_state =
+	const struct drm_display_mode *adjusted_mode =
+		&crtc_state->hw.adjusted_mode;
+	const struct intel_crtc_scaler_state *scaler_state =
 		&crtc_state->scaler_state;
 	struct drm_rect src, dest;
 	int id, width, height;
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.h b/drivers/gpu/drm/i915/display/skl_scaler.h
index 7e8d819c019d..20ecf373eb19 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.h
+++ b/drivers/gpu/drm/i915/display/skl_scaler.h
@@ -36,7 +36,7 @@ void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state);
 
 void skl_scaler_get_config(struct intel_crtc_state *crtc_state);
 
-void skl_scaler_setup_casf(struct intel_crtc_state *crtc_state);
+void skl_scaler_setup_casf(const struct intel_crtc_state *crtc_state);
 
 enum drm_mode_status
 skl_scaler_mode_valid(struct intel_display *display,
-- 
2.52.0