@@ -214,6 +214,15 @@ icl_wa_scalerclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
intel_de_read(dev_priv, CLKGATE_DIS_PSL(pipe)) & ~DPFR_GATING_DIS);
}
+/* Wa_1604331009:icl,jsl,ehl */
+static void
+icl_wa_cursorclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
+ bool enable)
+{
+ intel_de_rmw(dev_priv, CLKGATE_DIS_PSL(pipe), CURSOR_GATING_DIS,
+ enable ? CURSOR_GATING_DIS : 0);
+}
+
static bool
is_trans_port_sync_slave(const struct intel_crtc_state *crtc_state)
{
@@ -2356,6 +2365,19 @@ static bool needs_scalerclk_wa(const struct intel_crtc_state *crtc_state)
return false;
}
+static bool needs_cursorclk_wa(const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
+
+ /* Wa_1604331009:icl,jsl,ehl */
+ if (is_hdr_mode(crtc_state) &&
+ crtc_state->active_planes & BIT(PLANE_CURSOR) &&
+ DISPLAY_VER(dev_priv) == 11)
+ return true;
+
+ return false;
+}
+
static bool planes_enabling(const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
@@ -2398,6 +2420,11 @@ static void intel_post_plane_update(struct intel_atomic_state *state,
if (needs_scalerclk_wa(old_crtc_state) &&
!needs_scalerclk_wa(new_crtc_state))
icl_wa_scalerclkgating(dev_priv, pipe, false);
+
+ if (needs_cursorclk_wa(old_crtc_state) &&
+ !needs_cursorclk_wa(new_crtc_state))
+ icl_wa_cursorclkgating(dev_priv, pipe, false);
+
}
static void intel_crtc_enable_flip_done(struct intel_atomic_state *state,
@@ -2494,6 +2521,11 @@ static void intel_pre_plane_update(struct intel_atomic_state *state,
needs_scalerclk_wa(new_crtc_state))
icl_wa_scalerclkgating(dev_priv, pipe, true);
+ /* Wa_1604331009:icl,jsl,ehl */
+ if (!needs_cursorclk_wa(old_crtc_state) &&
+ needs_cursorclk_wa(new_crtc_state))
+ icl_wa_cursorclkgating(dev_priv, pipe, true);
+
/*
* Vblank time updates from the shadow to live plane control register
* are blocked if the memory self-refresh mode is active at that
@@ -4269,6 +4269,7 @@ enum {
#define DUPS1_GATING_DIS (1 << 15)
#define DUPS2_GATING_DIS (1 << 19)
#define DUPS3_GATING_DIS (1 << 23)
+#define CURSOR_GATING_DIS REG_BIT(28)
#define DPF_GATING_DIS (1 << 10)
#define DPF_RAM_GATING_DIS (1 << 9)
#define DPFR_GATING_DIS (1 << 8)
Display underrun in HDR mode when cursor is enabled. RTL fix will be implemented CLKGATE_DIS_PSL_A bit 28-46520h. As per W/A 1604331009, Disable cursor clock gating in HDR mode. Bspec : 33451 Changes since V6: - Address checkpatch warnings - Bit ordering Changes since V5: - replace intel_de_read with intel_de_rmw - Jani Changes since V4: - Added WA needed check - Ville - Replace BIT with REG_BIT - Ville - Add WA enable/disable support back which was added in V1 - Ville Changes since V3: - Disable WA when not in HDR mode or cursor plane not active - Ville - Extract required args from crtc_state - Ville - Create HDR mode API using bdw_set_pipemisc ref - Ville - Tested with HDR video as well full setmode, WA applies and disables Changes since V2: - Made it general gen11 WA - Removed WA needed check - Added cursor plane active check - Once WA enable, software will not disable Changes since V1: - Modified way CLKGATE_DIS_PSL bit 28 was modified Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com> --- drivers/gpu/drm/i915/display/intel_display.c | 32 ++++++++++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 1 + 2 files changed, 33 insertions(+)