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drm/i915: Make ilk_load_luts() deal with degamma

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Make ilk_load_luts() ready for a degamma lut. Currently we never
have one, but soon we may get one from readout, and I think we
may want to change the state computation such that we may end up
with one even when userspace has simply supplied a gamma lut.

At least the code now follows the path laid out by the ivb/bdw
counterpars.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221024161514.5340-2-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-10-24 19:15:10 +03:00
parent f5e674e92e
commit 5ca1493e25
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/display/intel_color.c
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@ -649,13 +649,15 @@ static void ilk_load_luts(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
const struct drm_property_blob *blob = gamma_lut ?: degamma_lut;
switch (crtc_state->gamma_mode) {
case GAMMA_MODE_MODE_8BIT:
ilk_load_lut_8(crtc, gamma_lut);
ilk_load_lut_8(crtc, blob);
break;
case GAMMA_MODE_MODE_10BIT:
ilk_load_lut_10(crtc, gamma_lut);
ilk_load_lut_10(crtc, blob);
break;
default:
MISSING_CASE(crtc_state->gamma_mode);