[RFC 3/3] drm/i915/alpm: Enable lobf from source in ALPM_CTL

[Animesh Manna <animesh.manna@intel.com>]

Set the Link Off Between Frames Enable bit in ALPM_CTL register.

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
 drivers/gpu/drm/i915/display/intel_psr.c           | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 4d2161eeb686..c8e7a65df45d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1854,6 +1854,7 @@ struct intel_dp {
 
 	/* LOBF flags*/
 	bool lobf_supported;
+	bool lobf_enabled;
 };
 
 enum lspcon_vendor {
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index c08bffc2921a..a9f8f2982b50 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1770,6 +1770,11 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp)
 			ALPM_CTL_EXTENDED_FAST_WAKE_TIME(intel_dp->alpm_parameters.fast_wake_lines);
 	}
 
+	if (intel_dp->lobf_supported) {
+		alpm_ctl |= ALPM_CTL_LOBF_ENABLE;
+		intel_dp->lobf_enabled = true;
+	}
+
 	alpm_ctl |= ALPM_CTL_ALPM_ENTRY_CHECK(intel_dp->alpm_parameters.check_entry_lines);
 
 	intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder), alpm_ctl);
-- 
2.29.0