The window2_delay member has been functionally unused (always set to 0)
since it was added in commit bb265dbdf38d ("drm/i915/xelpd: Add VRR
guardband for VRR CTL"). Replace it with a FIXME comment.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 2 --
drivers/gpu/drm/i915/display/intel_vrr.c | 14 ++++++++++----
drivers/gpu/drm/i915/i915_drv.h | 3 ---
3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 89b411662822..b347165ac2cf 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -8690,8 +8690,6 @@ int intel_modeset_init_noirq(struct drm_i915_private *i915)
i915->flip_wq = alloc_workqueue("i915_flip", WQ_HIGHPRI |
WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
- i915->window2_delay = 0; /* No DSB so no window2 delay */
-
intel_mode_config_init(i915);
ret = intel_cdclk_init(i915);
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 04250a0fec3c..5eac99021875 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -142,11 +142,16 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
* For XE_LPD+, we use guardband and pipeline override
* is deprecated.
*/
- if (DISPLAY_VER(i915) >= 13)
+ if (DISPLAY_VER(i915) >= 13) {
+ /*
+ * FIXME: Subtract Window2 delay from below value.
+ *
+ * Window2 specifies time required to program DSB (Window2) in
+ * number of scan lines. Assuming 0 for no DSB.
+ */
crtc_state->vrr.guardband =
- crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay -
- i915->window2_delay;
- else
+ crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay;
+ } else {
/*
* FIXME: s/4/framestart_delay/ to get consistent
* earliest/latest points for register latching regardless
@@ -159,6 +164,7 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
*/
crtc_state->vrr.pipeline_full =
min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay - 4 - 1);
+ }
crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9e7379fb3e40..e418e4775da4 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -430,9 +430,6 @@ struct drm_i915_private {
struct file *mmap_singleton;
} gem;
- /* Window2 specifies time required to program DSB (Window2) in number of scan lines */
- u8 window2_delay;
-
u8 pch_ssc_use;
/* For i915gm/i945gm vblank irq workaround */
--
2.34.1
