From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Read out the csc matrix on chv, and stash the result into the
correct spot in the crtc state.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_color.c | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 86b0d8260574..baadf62aabb4 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -612,6 +612,41 @@ static void chv_load_cgm_csc(struct intel_crtc *crtc,
csc->coeff[8]);
}
+static void chv_read_cgm_csc(struct intel_crtc *crtc,
+ struct intel_csc_matrix *csc)
+{
+ struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+ u32 tmp;
+
+ tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF01(pipe));
+ csc->coeff[0] = tmp & 0xffff;
+ csc->coeff[1] = tmp >> 16;
+
+ tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF23(pipe));
+ csc->coeff[2] = tmp & 0xffff;
+ csc->coeff[3] = tmp >> 16;
+
+ tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF45(pipe));
+ csc->coeff[4] = tmp & 0xffff;
+ csc->coeff[5] = tmp >> 16;
+
+ tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF67(pipe));
+ csc->coeff[6] = tmp & 0xffff;
+ csc->coeff[7] = tmp >> 16;
+
+ tmp = intel_de_read_fw(i915, CGM_PIPE_CSC_COEFF8(pipe));
+ csc->coeff[8] = tmp & 0xffff;
+}
+
+static void chv_read_csc(struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+ if (crtc_state->cgm_mode & CGM_PIPE_MODE_CSC)
+ chv_read_cgm_csc(crtc, &crtc_state->csc);
+}
+
static void chv_assign_csc(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
@@ -3329,6 +3364,7 @@ static const struct intel_color_funcs chv_color_funcs = {
.load_luts = chv_load_luts,
.read_luts = chv_read_luts,
.lut_equal = chv_lut_equal,
+ .read_csc = chv_read_csc,
};
static const struct intel_color_funcs i965_color_funcs = {
--
2.39.2
