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drm/i915/psr: Disable PSR2 SU Region ET if enable_psr module parameter is set

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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@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240618053026.3268759-6-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander
2024-06-18 08:30:22 +03:00
parent b445130c35
commit aeb7a0fe21
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/i915/display/intel_psr.c
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@@ -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,