Commit d2559299 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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



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: default avatarUma Shankar <uma.shankar@intel.com>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-13-ville.syrjala@linux.intel.com
parent 9f9af566

drivers/gpu/drm/i915/display/intel_color.c

+5 −5
Original line number Diff line number Diff line
@@ -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)

{

	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)

		return;



	if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)

		return;



	switch (crtc_state->gamma_mode) {

	case GAMMA_MODE_MODE_8BIT:

		crtc_state->post_csc_lut = ilk_read_lut_8(crtc);

		*blob = ilk_read_lut_8(crtc);

		break;

	case GAMMA_MODE_MODE_10BIT:

		crtc_state->post_csc_lut = ilk_read_lut_10(crtc);

		*blob = ilk_read_lut_10(crtc);

		break;

	default:

		MISSING_CASE(crtc_state->gamma_mode);