drm/i915/psr: Add enable_panel_replay module parameter

Add new module parameter enable_panel_replay. This can be used to
enable/disable Panel Replay. 0=disabled, 1=enabled. -1=use per-chip default
(default).

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250715105509.4146806-4-jouni.hogander@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_display_params.c b/drivers/gpu/drm/i915/display/intel_display_params.c
index 75316247ee8a858168732a2dadbbb9cf090d759f..2aed110c5b090b760e288d6ad71bf6e12b77796a 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display_params.c
+++ b/drivers/gpu/drm/i915/display/intel_display_params.c
@@ -120,6 +120,9 @@ intel_display_param_named_unsafe(enable_psr, int, 0400,
        "(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) "
        "Default: -1 (use per-chip default)");
 
+intel_display_param_named_unsafe(enable_panel_replay, int, 0400,
+       "Enable Panel Replay (0=disabled, 1=enabled). Default: -1 (use per-chip default)");
+
 intel_display_param_named(psr_safest_params, bool, 0400,
        "Replace PSR VBT parameters by the safest and not optimal ones. This "
        "is helpful to detect if PSR issues are related to bad values set in "

diff --git a/drivers/gpu/drm/i915/display/intel_display_params.h b/drivers/gpu/drm/i915/display/intel_display_params.h
index 784e6bae86154fd15d65efb08286f65a048f2fff..b01bc5700c52d504772c3dbf0c796933fd85ee4b 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display_params.h
+++ b/drivers/gpu/drm/i915/display/intel_display_params.h
@@ -46,6 +46,7 @@ struct drm_printer;
        param(bool, enable_dp_mst, true, 0600) \
        param(int, enable_fbc, -1, 0600) \
        param(int, enable_psr, -1, 0600) \
+       param(int, enable_panel_replay, -1, 0600) \
        param(bool, psr_safest_params, false, 0400) \
        param(bool, enable_psr2_sel_fetch, true, 0400) \
        param(int, enable_dmc_wl, -1, 0400) \

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index ee1f9a240283d68b3052d0cc18b6159919ee576f..6bd3454bb00e730e868752e1ba15921c04901008 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -259,7 +259,10 @@ static bool sel_update_global_enabled(struct intel_dp *intel_dp)
 
 static bool panel_replay_global_enabled(struct intel_dp *intel_dp)
 {
-       return !(intel_dp->psr.debug & I915_PSR_DEBUG_PANEL_REPLAY_DISABLE);
+       struct intel_display *display = to_intel_display(intel_dp);
+
+       return !(intel_dp->psr.debug & I915_PSR_DEBUG_PANEL_REPLAY_DISABLE) &&
+               display->params.enable_panel_replay;
 }
 
 static u32 psr_irq_psr_error_bit_get(struct intel_dp *intel_dp)