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* [Intel-gfx] [PATCH v2 1/2] drm/i915/display: Add workaround 22014263786
@ 2022-04-19 18:27 José Roberto de Souza
  2022-04-19 18:27 ` [Intel-gfx] [PATCH v2 2/2] drm/i915/dg2: Add workaround 18019627453 José Roberto de Souza
                   ` (8 more replies)
  0 siblings, 9 replies; 13+ messages in thread
From: José Roberto de Souza @ 2022-04-19 18:27 UTC (permalink / raw)
  To: intel-gfx

This workaround fixes screen flickers with FBC.

BSpec: 33450
BSpec: 52890
BSpec: 54369
BSpec: 66624
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbc.c | 9 +++++++++
 drivers/gpu/drm/i915/i915_reg.h          | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 670835318a1f1..b7bdb0739744a 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -811,6 +811,14 @@ static void intel_fbc_program_cfb(struct intel_fbc *fbc)
 	fbc->funcs->program_cfb(fbc);
 }
 
+static void intel_fbc_program_workarounds(struct intel_fbc *fbc)
+{
+	/* Wa_22014263786:icl,jsl,tgl,dg1,rkl,adls,dg2,adlp */
+	if (DISPLAY_VER(fbc->i915) >= 11)
+		intel_de_rmw(fbc->i915, ILK_DPFC_CHICKEN(fbc->id), 0,
+			     DPFC_CHICKEN_FORCE_SLB_INVALIDATION);
+}
+
 static void __intel_fbc_cleanup_cfb(struct intel_fbc *fbc)
 {
 	struct drm_i915_private *i915 = fbc->i915;
@@ -1462,6 +1470,7 @@ static void __intel_fbc_enable(struct intel_atomic_state *state,
 
 	intel_fbc_update_state(state, crtc, plane);
 
+	intel_fbc_program_workarounds(fbc);
 	intel_fbc_program_cfb(fbc);
 }
 
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fef71b242706a..0ec7123197fcb 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1400,6 +1400,7 @@
 #define   DPFC_HT_MODIFY			REG_BIT(31) /* pre-ivb */
 #define   DPFC_NUKE_ON_ANY_MODIFICATION		REG_BIT(23) /* bdw+ */
 #define   DPFC_CHICKEN_COMP_DUMMY_PIXEL		REG_BIT(14) /* glk+ */
+#define   DPFC_CHICKEN_FORCE_SLB_INVALIDATION	REG_BIT(13) /* icl+ */
 #define   DPFC_DISABLE_DUMMY0			REG_BIT(8) /* ivb+ */
 
 #define GLK_FBC_STRIDE(fbc_id)	_MMIO_PIPE((fbc_id), 0x43228, 0x43268)
-- 
2.35.3


^ permalink raw reply related	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2022-04-20 16:56 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-04-19 18:27 [Intel-gfx] [PATCH v2 1/2] drm/i915/display: Add workaround 22014263786 José Roberto de Souza
2022-04-19 18:27 ` [Intel-gfx] [PATCH v2 2/2] drm/i915/dg2: Add workaround 18019627453 José Roberto de Souza
2022-04-19 21:26   ` Matt Roper
2022-04-19 19:02 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for series starting with [v2,1/2] drm/i915/display: Add workaround 22014263786 Patchwork
2022-04-19 19:26 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2022-04-19 19:58 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for series starting with [v2,1/2] drm/i915/display: Add workaround 22014263786 (rev2) Patchwork
2022-04-19 20:25 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2022-04-19 20:59   ` Souza, Jose
2022-04-19 21:13 ` Patchwork
2022-04-20 13:59 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for series starting with [v2,1/2] drm/i915/display: Add workaround 22014263786 (rev3) Patchwork
2022-04-20 14:23 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2022-04-20 15:49 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2022-04-20 16:56   ` Souza, Jose

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