Add func intel_csc_equal() to compare hw/sw CSC coeff values.
Cc: Swati Sharma <swati2.sharma@xxxxxxxxx>
Cc: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_color.c | 51 +++++++++++++++++++---
drivers/gpu/drm/i915/display/intel_color.h | 3 ++
2 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 17bb08e9cf64..54dfd3523272 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -348,16 +348,11 @@ static void icl_load_csc_matrix(const struct intel_crtc_state *crtc_state)
crtc_state->csc_mode);
}
-static void chv_load_cgm_csc(struct intel_crtc *crtc,
- const struct drm_property_blob *blob)
+static void chv_csc_convert_ctm(const struct drm_color_ctm *ctm, u16 coeffs[9])
{
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- const struct drm_color_ctm *ctm = blob->data;
- enum pipe pipe = crtc->pipe;
- u16 coeffs[9];
int i;
- for (i = 0; i < ARRAY_SIZE(coeffs); i++) {
+ for (i = 0; i < 9; i++) {
u64 abs_coeff = ((1ULL << 63) - 1) & ctm->matrix[i];
/* Round coefficient. */
@@ -374,6 +369,17 @@ static void chv_load_cgm_csc(struct intel_crtc *crtc,
coeffs[i] |= ((abs_coeff >> 32) & 7) << 12;
coeffs[i] |= (abs_coeff >> 20) & 0xfff;
}
+}
+
+static void chv_load_cgm_csc(struct intel_crtc *crtc,
+ const struct drm_property_blob *blob)
+{
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ const struct drm_color_ctm *ctm = blob->data;
+ enum pipe pipe = crtc->pipe;
+ u16 coeffs[9];
+
+ chv_csc_convert_ctm(ctm, coeffs);
intel_de_write(dev_priv, CGM_PIPE_CSC_COEFF01(pipe),
coeffs[1] << 16 | coeffs[0]);
@@ -1792,6 +1798,37 @@ bool intel_color_lut_equal(struct drm_property_blob *blob1,
return true;
}
+bool intel_csc_equal(const struct intel_crtc_state *current_config,
+ struct drm_property_blob *blob1,
+ struct drm_property_blob *blob2)
+{
+ struct drm_i915_private *dev_priv = to_i915(current_config->uapi.crtc->dev);
+ struct drm_color_ctm *ctm1, *ctm2;
+ u16 coeffs[9];
+ int i;
+
+ if (!blob1 != !blob2)
+ return false;
+
+ if (!blob1)
+ return true;
+
+ ctm1 = blob1->data;
+ ctm2 = blob2->data;
+
+ if (IS_CHERRYVIEW(dev_priv))
+ chv_csc_convert_ctm(ctm1, coeffs);
+ else
+ ilk_csc_convert_ctm(current_config, coeffs);
+
+ for (i = 0; i < 9; i++) {
+ if (abs(coeffs[i] - ctm2->matrix[i]))
+ return false;
+ }
+
+ return true;
+}
+
static struct drm_property_blob *i9xx_read_lut_8(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
diff --git a/drivers/gpu/drm/i915/display/intel_color.h b/drivers/gpu/drm/i915/display/intel_color.h
index 173727aaa24d..e6bd9aa0c04a 100644
--- a/drivers/gpu/drm/i915/display/intel_color.h
+++ b/drivers/gpu/drm/i915/display/intel_color.h
@@ -21,5 +21,8 @@ int intel_color_get_gamma_bit_precision(const struct intel_crtc_state *crtc_stat
bool intel_color_lut_equal(struct drm_property_blob *blob1,
struct drm_property_blob *blob2,
u32 gamma_mode, u32 bit_precision);
+bool intel_csc_equal(const struct intel_crtc_state *crtc_state,
+ struct drm_property_blob *blob1,
+ struct drm_property_blob *blob2);
#endif /* __INTEL_COLOR_H__ */
--
2.20.1
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