[PATCH 6.12.y 4/8] drm/i915/lobf: Add lobf enablement in post plane update

[Sasha Levin <sashal@kernel.org>]

From: Animesh Manna <animesh.manna@intel.com>

[ Upstream commit 172757acd6f60625f09760ef0ffdcac01d8ed58a ]

Enablement of LOBF is added in post plane update whenever
has_lobf flag is set. As LOBF can be enabled in non-psr
case as well so adding in post plane update. There is no
change of configuring alpm with psr path.

v1: Initial version.
v2: Use encoder-mask to find the associated encoder from
crtc-state. [Jani]
v3: Remove alpm_configure from intel_psr.c. [Jouni]

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20250423092334.2294483-3-animesh.manna@intel.com
Stable-dep-of: eb4a7139e973 ("drm/i915/alpm: ALPM disable fixes")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/display/intel_alpm.c    | 25 ++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_alpm.h    |  4 ++++
 drivers/gpu/drm/i915/display/intel_display.c |  3 +++
 drivers/gpu/drm/i915/display/intel_psr.c     |  3 ---
 4 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c
index 57afb25191bd9..d256bb831b136 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -365,6 +365,31 @@ void intel_alpm_configure(struct intel_dp *intel_dp,
 	lnl_alpm_configure(intel_dp, crtc_state);
 }
 
+void intel_alpm_post_plane_update(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc)
+{
+	struct intel_display *display = to_intel_display(state);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_encoder *encoder;
+
+	if (!crtc_state->has_lobf && !crtc_state->has_psr)
+		return;
+
+	for_each_intel_encoder_mask(display->drm, encoder,
+				    crtc_state->uapi.encoder_mask) {
+		struct intel_dp *intel_dp;
+
+		if (!intel_encoder_is_dp(encoder))
+			continue;
+
+		intel_dp = enc_to_intel_dp(encoder);
+
+		if (intel_dp_is_edp(intel_dp))
+			intel_alpm_configure(intel_dp, crtc_state);
+	}
+}
+
 static int i915_edp_lobf_info_show(struct seq_file *m, void *data)
 {
 	struct intel_connector *connector = m->private;
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.h b/drivers/gpu/drm/i915/display/intel_alpm.h
index 8c409b10dce6c..2f862b0476a8a 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.h
+++ b/drivers/gpu/drm/i915/display/intel_alpm.h
@@ -12,6 +12,8 @@ struct intel_dp;
 struct intel_crtc_state;
 struct drm_connector_state;
 struct intel_connector;
+struct intel_atomic_state;
+struct intel_crtc;
 
 void intel_alpm_init_dpcd(struct intel_dp *intel_dp);
 bool intel_alpm_compute_params(struct intel_dp *intel_dp,
@@ -21,6 +23,8 @@ void intel_alpm_lobf_compute_config(struct intel_dp *intel_dp,
 				    struct drm_connector_state *conn_state);
 void intel_alpm_configure(struct intel_dp *intel_dp,
 			  const struct intel_crtc_state *crtc_state);
+void intel_alpm_post_plane_update(struct intel_atomic_state *state,
+				  struct intel_crtc *crtc);
 void intel_alpm_lobf_debugfs_add(struct intel_connector *connector);
 bool intel_alpm_aux_wake_supported(struct intel_dp *intel_dp);
 bool intel_alpm_aux_less_wake_supported(struct intel_dp *intel_dp);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e2736f50fef83..bb05c8fd5e5f3 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -57,6 +57,7 @@
 #include "i9xx_plane.h"
 #include "i9xx_plane_regs.h"
 #include "i9xx_wm.h"
+#include "intel_alpm.h"
 #include "intel_atomic.h"
 #include "intel_atomic_plane.h"
 #include "intel_audio.h"
@@ -1116,6 +1117,8 @@ static void intel_post_plane_update(struct intel_atomic_state *state,
 	if (audio_enabling(old_crtc_state, new_crtc_state))
 		intel_encoders_audio_enable(state, crtc);
 
+	intel_alpm_post_plane_update(state, crtc);
+
 	intel_psr_post_plane_update(state, crtc);
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 16fd393de04fc..855f22f1f8328 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1886,9 +1886,6 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 			     intel_dp->psr.psr2_sel_fetch_enabled ?
 			     IGNORE_PSR2_HW_TRACKING : 0);
 
-	if (intel_dp_is_edp(intel_dp))
-		intel_alpm_configure(intel_dp, crtc_state);
-
 	/*
 	 * Wa_16013835468
 	 * Wa_14015648006
-- 
2.51.0