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drm/i915/display: convert W/As in intel_dp_mst.c to new framework

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Convert the low-hanging fruits of workaround checks to the workaround
framework.  Instead of having display structure checks for the
workarounds all over, concentrate the checks in intel_display_wa.c.

Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260305100100.332956-10-luciano.coelho@intel.com
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Luca Coelho 2026-03-05 11:59:12 +02:00
parent e0263465c5
commit cd09d058c0
3 changed files with 5 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/intel_display_wa.c
View File

@ -94,6 +94,8 @@ bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa,
case INTEL_DISPLAY_WA_14011765242:
return display->platform.alderlake_s &&
IS_DISPLAY_STEP(display, STEP_A0, STEP_A2);
case INTEL_DISPLAY_WA_14014143976:
return IS_DISPLAY_STEP(display, STEP_E0, STEP_FOREVER);
case INTEL_DISPLAY_WA_14020863754:
return DISPLAY_VERx100(display) == 3000 ||
DISPLAY_VERx100(display) == 2000 ||

1
drivers/gpu/drm/i915/display/intel_display_wa.h
View File

@ -36,6 +36,7 @@ enum intel_display_wa {
INTEL_DISPLAY_WA_14011503117,
INTEL_DISPLAY_WA_14011508470,
INTEL_DISPLAY_WA_14011765242,
INTEL_DISPLAY_WA_14014143976,
INTEL_DISPLAY_WA_14020863754,
INTEL_DISPLAY_WA_14025769978,
INTEL_DISPLAY_WA_15013987218,

3
drivers/gpu/drm/i915/display/intel_dp_mst.c
View File

@ -43,6 +43,7 @@
#include "intel_display_regs.h"
#include "intel_display_types.h"
#include "intel_display_utils.h"
#include "intel_display_wa.h"
#include "intel_dp.h"
#include "intel_dp_hdcp.h"
#include "intel_dp_link_training.h"
@ -1276,7 +1277,7 @@ static void enable_bs_jitter_was(const struct intel_crtc_state *crtc_state)
set |= DP_MST_FEC_BS_JITTER_WA(crtc_state->cpu_transcoder);
/* Wa_14014143976:adlp */
if (IS_DISPLAY_STEP(display, STEP_E0, STEP_FOREVER)) {
if (intel_display_wa(display, INTEL_DISPLAY_WA_14014143976)) {
if (intel_dp_is_uhbr(crtc_state))
set |= DP_MST_SHORT_HBLANK_WA(crtc_state->cpu_transcoder);
else if (crtc_state->fec_enable)