Currently PSR2 SU Region Early Transport is enabled by default on Lunarlake
if panel supports it despite enable_psr module parameter value. This patch
makes it possible for user to limit used PSR mode and prevent SU Region
Early Transport by setting enable_psr as 2. With default (-1) PSR2 SU
Region Early Transport is allowed.
v2: fix/improve commit desciption
Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_psr.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index cfce0fe05d92..800cfeabc139 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -235,6 +235,16 @@ static bool psr2_global_enabled(struct intel_dp *intel_dp)
}
}
+static bool psr2_su_region_et_global_enabled(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+ if (i915->display.params.enable_psr != -1)
+ return false;
+
+ return true;
+}
+
static bool panel_replay_global_enabled(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
@@ -683,7 +693,8 @@ static bool psr2_su_region_et_valid(struct intel_dp *intel_dp, bool panel_replay
return panel_replay ?
intel_dp->pr_dpcd & DP_PANEL_REPLAY_EARLY_TRANSPORT_SUPPORT :
- intel_dp->psr_dpcd[0] == DP_PSR2_WITH_Y_COORD_ET_SUPPORTED;
+ intel_dp->psr_dpcd[0] == DP_PSR2_WITH_Y_COORD_ET_SUPPORTED &&
+ psr2_su_region_et_global_enabled(intel_dp);
}
static void _panel_replay_enable_sink(struct intel_dp *intel_dp,
--
2.34.1
