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drm/i915: Fix color blob reference handling in intel_plane_state

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Take proper references for hw color blobs (degamma_lut, gamma_lut,
ctm, lut_3d) in intel_plane_duplicate_state() and drop them in
intel_plane_destroy_state().

v2:
- handle blobs in hw state clear

Cc: <stable@vger.kernel.org> #v6.19+
Fixes: 3b7476e786 ("drm/i915/color: Add framework to program PRE/POST CSC LUT")
Fixes: a78f1b6baf ("drm/i915/color: Add framework to program CSC")
Fixes: 65db7a1f9c ("drm/i915/color: Add 3D LUT to color pipeline")
Reviewed-by: Pranay Samala <pranay.samala@intel.com> #v1
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260601082953.128539-4-chaitanya.kumar.borah@intel.com
This commit is contained in:
Chaitanya Kumar Borah
2026-06-01 13:59:53 +05:30
committed by Uma Shankar
parent dfd604b259
commit c6eea19251
1 changed files with 27 additions and 0 deletions
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27
drivers/gpu/drm/i915/display/intel_plane.c
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@@ -145,6 +145,15 @@ intel_plane_duplicate_state(struct drm_plane *plane)
if (intel_state->hw.fb)
drm_framebuffer_get(intel_state->hw.fb);
if (intel_state->hw.degamma_lut)
drm_property_blob_get(intel_state->hw.degamma_lut);
if (intel_state->hw.gamma_lut)
drm_property_blob_get(intel_state->hw.gamma_lut);
if (intel_state->hw.ctm)
drm_property_blob_get(intel_state->hw.ctm);
if (intel_state->hw.lut_3d)
drm_property_blob_get(intel_state->hw.lut_3d);
return &intel_state->uapi;
}
@@ -168,6 +177,16 @@ intel_plane_destroy_state(struct drm_plane *plane,
__drm_atomic_helper_plane_destroy_state(&plane_state->uapi);
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
if (plane_state->hw.degamma_lut)
drm_property_blob_put(plane_state->hw.degamma_lut);
if (plane_state->hw.gamma_lut)
drm_property_blob_put(plane_state->hw.gamma_lut);
if (plane_state->hw.ctm)
drm_property_blob_put(plane_state->hw.ctm);
if (plane_state->hw.lut_3d)
drm_property_blob_put(plane_state->hw.lut_3d);
kfree(plane_state);
}
@@ -340,6 +359,14 @@ static void intel_plane_clear_hw_state(struct intel_plane_state *plane_state)
{
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
if (plane_state->hw.degamma_lut)
drm_property_blob_put(plane_state->hw.degamma_lut);
if (plane_state->hw.gamma_lut)
drm_property_blob_put(plane_state->hw.gamma_lut);
if (plane_state->hw.ctm)
drm_property_blob_put(plane_state->hw.ctm);
if (plane_state->hw.lut_3d)
drm_property_blob_put(plane_state->hw.lut_3d);
memset(&plane_state->hw, 0, sizeof(plane_state->hw));
}