diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_color.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index 299eb7858adc..bc7589656a8f 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -609,11 +609,27 @@ int intel_color_check(struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev); size_t gamma_length, degamma_length; + uint32_t tests = DRM_COLOR_LUT_NON_DECREASING; degamma_length = INTEL_INFO(dev_priv)->color.degamma_lut_size; gamma_length = INTEL_INFO(dev_priv)->color.gamma_lut_size; /* + * All of our platforms mandate that the degamma curve be + * non-decreasing. Additionally, GLK and gen11 only accept a single + * value for red, green, and blue in the degamma table. Make sure + * userspace didn't try to pass us something we can't handle. + * + * We don't have any extra hardware constraints on the gamma table, + * so no need to explicitly check it. + */ + if (IS_GEMINILAKE(dev_priv) || INTEL_GEN(dev_priv) >= 10) + tests |= DRM_COLOR_LUT_EQUAL_CHANNELS; + + if (drm_color_lut_check(crtc_state->base.degamma_lut, tests) != 0) + return -EINVAL; + + /* * We allow both degamma & gamma luts at the right size or * NULL. */ |