Added support for ICL platform multi segment gamma
capabilties and attached the property, exposing the
same to userspace.
Signed-off-by: Uma Shankar <uma.shan...@intel.com>
---
drivers/gpu/drm/i915/intel_color.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_color.c
b/drivers/gpu/drm/i915/intel_color.c
index 7733c256..1e9f784 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -1011,6 +1011,8 @@ int intel_color_check(struct intel_crtc_state *crtc_state)
void intel_color_init(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ struct multi_segment_gamma_lut multi_segment_lut;
+
drm_mode_crtc_set_gamma_size(&crtc->base, 256);
@@ -1049,6 +1051,24 @@ void intel_color_init(struct intel_crtc *crtc)
intel_attach_gamma_mode_property(crtc);
- if (INTEL_GEN(dev_priv) >= 11)
+ if (IS_ICELAKE(dev_priv)) {
+ multi_segment_lut.segment_cnt = 3;
+ multi_segment_lut.precision_bits = 16;
+ multi_segment_lut.segment_lut_cnt_ptr = kzalloc(3 * sizeof(int),
+ GFP_KERNEL);
+ if (!multi_segment_lut.segment_lut_cnt_ptr)
+ return;
+ multi_segment_lut.segment_lut_cnt_ptr[0] = 9;
+ multi_segment_lut.segment_lut_cnt_ptr[1] = 256;
+ multi_segment_lut.segment_lut_cnt_ptr[2] = 256;
+
intel_attach_multi_segment_gamma_mode_property(crtc);
+
+ drm_property_replace_global_blob(crtc->base.dev,
+
&crtc->config->multi_segment_gamma_lut,
+ sizeof(struct
multi_segment_gamma_lut),
+ &multi_segment_lut,
+ &crtc->base.base,
+
dev_priv->multi_segment_gamma_mode_property);
+ }
}
--
1.9.1
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