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authorLuca Coelho <luciano.coelho@intel.com>2026-03-05 12:59:14 +0300
committerLuca Coelho <luciano.coelho@intel.com>2026-03-09 13:32:48 +0300
commit700f1c1b3be7897cd3d265a2f3f2ebe200fb2700 (patch)
tree6908b9d7a8117af0078fa7f8abd1cf78051678c7
parent305a60de9b16f310e8e50d1405108609f6e6ec2b (diff)
downloadlinux-700f1c1b3be7897cd3d265a2f3f2ebe200fb2700.tar.xz
drm/i915/display: convert W/As in intel_flipq.c to new framework
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/20260305100100.332956-12-luciano.coelho@intel.com Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
-rw-r--r--drivers/gpu/drm/i915/display/intel_display_wa.c4
-rw-r--r--drivers/gpu/drm/i915/display/intel_display_wa.h1
-rw-r--r--drivers/gpu/drm/i915/display/intel_flipq.c13
3 files changed, 8 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.c b/drivers/gpu/drm/i915/display/intel_display_wa.c
index 0f449ea8e1bb..81be1e875c07 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.c
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.c
@@ -117,6 +117,10 @@ bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa,
return intel_display_needs_wa_16023588340(display);
case INTEL_DISPLAY_WA_16025573575:
return intel_display_needs_wa_16025573575(display);
+ case INTEL_DISPLAY_WA_18034343758:
+ return DISPLAY_VER(display) == 20 ||
+ (display->platform.pantherlake &&
+ IS_DISPLAY_STEP(display, STEP_A0, STEP_B0));
case INTEL_DISPLAY_WA_22010178259:
return DISPLAY_VER(display) == 12;
case INTEL_DISPLAY_WA_22011320316:
diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.h b/drivers/gpu/drm/i915/display/intel_display_wa.h
index 373cbbb93873..68d67b9b0263 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.h
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.h
@@ -46,6 +46,7 @@ enum intel_display_wa {
INTEL_DISPLAY_WA_16011863758,
INTEL_DISPLAY_WA_16023588340,
INTEL_DISPLAY_WA_16025573575,
+ INTEL_DISPLAY_WA_18034343758,
INTEL_DISPLAY_WA_22010178259,
INTEL_DISPLAY_WA_22011320316,
INTEL_DISPLAY_WA_22012358565,
diff --git a/drivers/gpu/drm/i915/display/intel_flipq.c b/drivers/gpu/drm/i915/display/intel_flipq.c
index 1e9550cb66a3..253dc2e96d2d 100644
--- a/drivers/gpu/drm/i915/display/intel_flipq.c
+++ b/drivers/gpu/drm/i915/display/intel_flipq.c
@@ -12,6 +12,7 @@
#include "intel_display_core.h"
#include "intel_display_types.h"
#include "intel_display_utils.h"
+#include "intel_display_wa.h"
#include "intel_dmc.h"
#include "intel_dmc_regs.h"
#include "intel_dsb.h"
@@ -447,19 +448,11 @@ void intel_flipq_add(struct intel_crtc *crtc,
intel_flipq_sw_dmc_wake(crtc);
}
-/* Wa_18034343758 */
-static bool need_dmc_halt_wa(struct intel_display *display)
-{
- return DISPLAY_VER(display) == 20 ||
- (display->platform.pantherlake &&
- IS_DISPLAY_STEP(display, STEP_A0, STEP_B0));
-}
-
void intel_flipq_wait_dmc_halt(struct intel_dsb *dsb, struct intel_crtc *crtc)
{
struct intel_display *display = to_intel_display(crtc);
- if (need_dmc_halt_wa(display))
+ if (intel_display_wa(display, INTEL_DISPLAY_WA_18034343758))
intel_dsb_wait_usec(dsb, 2);
}
@@ -467,6 +460,6 @@ void intel_flipq_unhalt_dmc(struct intel_dsb *dsb, struct intel_crtc *crtc)
{
struct intel_display *display = to_intel_display(crtc);
- if (need_dmc_halt_wa(display))
+ if (intel_display_wa(display, INTEL_DISPLAY_WA_18034343758))
intel_dsb_reg_write(dsb, PIPEDMC_CTL(crtc->pipe), 0);
}