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drm/i915: Make ilk_read_luts() capable of degamma readout

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Just like ivb+, ilk/snb can select whether the hw lut acts as
gamma or degamma. Make the readout cognizant of that fact.

v2: deal with pre_csc_lut
v3: use ilk_has_post_csc_lut() helper

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/20221114153732.11773-13-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-11-14 17:37:24 +02:00
parent 9f9af566a1
commit d2559299d3
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/i915/display/intel_color.c
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@ -2176,19 +2176,19 @@ static struct drm_property_blob *ilk_read_lut_10(struct intel_crtc *crtc)
static void ilk_read_luts(struct intel_crtc_state *crtc_state) static void ilk_read_luts(struct intel_crtc_state *crtc_state)
{ {
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_property_blob **blob =
ilk_has_post_csc_lut(crtc_state) ?
&crtc_state->post_csc_lut : &crtc_state->pre_csc_lut;
if (!crtc_state->gamma_enable) if (!crtc_state->gamma_enable)
return; return;
if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
return;
switch (crtc_state->gamma_mode) { switch (crtc_state->gamma_mode) {
case GAMMA_MODE_MODE_8BIT: case GAMMA_MODE_MODE_8BIT:
crtc_state->post_csc_lut = ilk_read_lut_8(crtc); *blob = ilk_read_lut_8(crtc);
break; break;
case GAMMA_MODE_MODE_10BIT: case GAMMA_MODE_MODE_10BIT:
crtc_state->post_csc_lut = ilk_read_lut_10(crtc); *blob = ilk_read_lut_10(crtc);
break; break;
default: default:
MISSING_CASE(crtc_state->gamma_mode); MISSING_CASE(crtc_state->gamma_mode);