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drm/i915/color: deduplicate loops in xelpd_program_plane_pre_csc_lut()

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Now that the pre_csc_lut and non-pre_csc_lut paths look similar,
deduplicate the loops and just determine the value based on pre_csc_lut
vs. not.

Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patch.msgid.link/b943121a358dab0b04c9766baba8295f12ae53fc.1780499355.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula
2026-06-03 18:14:34 +03:00
parent acfef63368
commit bbc23003e0
1 changed files with 7 additions and 13 deletions
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20
drivers/gpu/drm/i915/display/intel_color.c
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@@ -3977,27 +3977,21 @@ xelpd_program_plane_pre_csc_lut(struct intel_dsb *dsb,
PLANE_PRE_CSC_GAMC_INDEX_ENH(pipe, plane, 0),
PLANE_PAL_PREC_AUTO_INCREMENT);
if (pre_csc_lut) {
for (i = 0; i < lut_size + 3; i++) {
for (i = 0; i < lut_size + 3; i++) {
if (pre_csc_lut) {
if (i < lut_size)
lut_val = drm_color_lut32_extract(pre_csc_lut[i].green, 24);
/* else duplicate last lut_val */
intel_de_write_dsb(display, dsb,
PLANE_PRE_CSC_GAMC_DATA_ENH(pipe, plane, 0),
lut_val);
}
} else {
for (i = 0; i < lut_size + 3; i++) {
} else {
if (i < lut_size)
lut_val = (i * ((1 << 24) - 1)) / (lut_size - 1);
else
lut_val = 1 << 24;
intel_de_write_dsb(display, dsb,
PLANE_PRE_CSC_GAMC_DATA_ENH(pipe, plane, 0),
lut_val);
}
intel_de_write_dsb(display, dsb,
PLANE_PRE_CSC_GAMC_DATA_ENH(pipe, plane, 0),
lut_val);
}
intel_de_write_dsb(display, dsb, PLANE_PRE_CSC_GAMC_INDEX_ENH(pipe, plane, 0), 0);