Enable plane gamma feature in check callbacks. Decide
based on the user input.

Signed-off-by: Uma Shankar <uma.shan...@intel.com>
---
 drivers/gpu/drm/i915/display/skl_universal_plane.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c 
b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 61eff22a3503..139863d4e3a7 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -959,7 +959,9 @@ static u32 glk_plane_color_ctl(const struct 
intel_crtc_state *crtc_state,
        struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
        u32 plane_color_ctl = 0;
 
-       plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
+       /* FIXME needs hw.gamma_lut */
+       if (!plane_state->uapi.gamma_lut)
+               plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
 
        /* FIXME needs hw.degamma_lut */
        if (plane_state->uapi.degamma_lut)
-- 
2.26.2

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