Merge tag 'drm-intel-next-fixes-2025-05-15' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

- Stop writing ALPM registers when PSR is enabled
- Use the correct connector while computing the link BPP limit on MST

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://lore.kernel.org/r/aCWlWk5rTE7TH1pN@jlahtine-mobl

Author: airlied

drivers/gpu/drm/i915/display/intel_alpm.c

@@ -426,8 +426,8 @@ void intel_alpm_pre_plane_update(struct intel_atomic_state *state,
 	}
 }
 
-static void intel_alpm_enable_sink(struct intel_dp *intel_dp,
-				   const struct intel_crtc_state *crtc_state)
+void intel_alpm_enable_sink(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state)
 {
 	u8 val;
 
@@ -453,8 +453,8 @@ void intel_alpm_post_plane_update(struct intel_atomic_state *state,
 		intel_atomic_get_old_crtc_state(state, crtc);
 	struct intel_encoder *encoder;
 
-	if ((!crtc_state->has_lobf ||
-	     crtc_state->has_lobf == old_crtc_state->has_lobf) && !crtc_state->has_psr)
+	if (crtc_state->has_psr || !crtc_state->has_lobf ||
+	    crtc_state->has_lobf == old_crtc_state->has_lobf)
 		return;
 
 	for_each_intel_encoder_mask(display->drm, encoder,

drivers/gpu/drm/i915/display/intel_alpm.h

@@ -23,6 +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_enable_sink(struct intel_dp *intel_dp,
+			    const struct intel_crtc_state *crtc_state);
 void intel_alpm_pre_plane_update(struct intel_atomic_state *state,
 				 struct intel_crtc *crtc);
 void intel_alpm_post_plane_update(struct intel_atomic_state *state,

drivers/gpu/drm/i915/display/intel_dp.c

@@ -2524,6 +2524,7 @@ intel_dp_dsc_compute_pipe_bpp_limits(struct intel_dp *intel_dp,
 
 bool
 intel_dp_compute_config_limits(struct intel_dp *intel_dp,
+			       struct intel_connector *connector,
 			       struct intel_crtc_state *crtc_state,
 			       bool respect_downstream_limits,
 			       bool dsc,
@@ -2577,7 +2578,7 @@ intel_dp_compute_config_limits(struct intel_dp *intel_dp,
 	intel_dp_test_compute_config(intel_dp, crtc_state, limits);
 
 	return intel_dp_compute_config_link_bpp_limits(intel_dp,
-						       intel_dp->attached_connector,
+						       connector,
 						       crtc_state,
 						       dsc,
 						       limits);
@@ -2638,7 +2639,7 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
 	joiner_needs_dsc = intel_dp_joiner_needs_dsc(display, num_joined_pipes);
 
 	dsc_needed = joiner_needs_dsc || intel_dp->force_dsc_en ||
-		     !intel_dp_compute_config_limits(intel_dp, pipe_config,
+		     !intel_dp_compute_config_limits(intel_dp, connector, pipe_config,
 						     respect_downstream_limits,
 						     false,
 						     &limits);
@@ -2672,7 +2673,7 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
 			    str_yes_no(ret), str_yes_no(joiner_needs_dsc),
 			    str_yes_no(intel_dp->force_dsc_en));
 
-		if (!intel_dp_compute_config_limits(intel_dp, pipe_config,
+		if (!intel_dp_compute_config_limits(intel_dp, connector, pipe_config,
 						    respect_downstream_limits,
 						    true,
 						    &limits))

drivers/gpu/drm/i915/display/intel_dp.h

@@ -194,6 +194,7 @@ void intel_dp_wait_source_oui(struct intel_dp *intel_dp);
 int intel_dp_output_bpp(enum intel_output_format output_format, int bpp);
 
 bool intel_dp_compute_config_limits(struct intel_dp *intel_dp,
+				    struct intel_connector *connector,
 				    struct intel_crtc_state *crtc_state,
 				    bool respect_downstream_limits,
 				    bool dsc,

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -599,12 +599,13 @@ adjust_limits_for_dsc_hblank_expansion_quirk(struct intel_dp *intel_dp,
 
 static bool
 mst_stream_compute_config_limits(struct intel_dp *intel_dp,
-				 const struct intel_connector *connector,
+				 struct intel_connector *connector,
 				 struct intel_crtc_state *crtc_state,
 				 bool dsc,
 				 struct link_config_limits *limits)
 {
-	if (!intel_dp_compute_config_limits(intel_dp, crtc_state, false, dsc,
+	if (!intel_dp_compute_config_limits(intel_dp, connector,
+					    crtc_state, false, dsc,
 					    limits))
 		return false;
 

drivers/gpu/drm/i915/display/intel_psr.c

@@ -800,6 +800,8 @@ static void _psr_enable_sink(struct intel_dp *intel_dp,
 static void intel_psr_enable_sink(struct intel_dp *intel_dp,
 				  const struct intel_crtc_state *crtc_state)
 {
+	intel_alpm_enable_sink(intel_dp, crtc_state);
+
 	crtc_state->has_panel_replay ?
 		_panel_replay_enable_sink(intel_dp, crtc_state) :
 		_psr_enable_sink(intel_dp, crtc_state);
@@ -1962,6 +1964,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 	     IS_DISPLAY_VERx100_STEP(display, 3000, STEP_A0, STEP_B0)) &&
 	    !intel_dp->psr.panel_replay_enabled)
 		intel_dmc_block_pkgc(display, intel_dp->psr.pipe, true);
+
+	intel_alpm_configure(intel_dp, crtc_state);
 }
 
 static bool psr_interrupt_error_check(struct intel_dp *intel_dp)
@@ -2029,8 +2033,9 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp,
 			    intel_dp->psr.sel_update_enabled ? "2" : "1");
 
 	/*
-	 * Enabling here only for PSR. Panel Replay enable bit is already
-	 * written at this point. See
+	 * Enabling sink PSR/Panel Replay here only for PSR. Panel Replay enable
+	 * bit is already written at this point. Sink ALPM is enabled here for
+	 * PSR and Panel Replay. See
 	 * intel_psr_panel_replay_enable_sink. Modifiers/options:
 	 *  - Selective Update
 	 *  - Region Early Transport
@@ -2172,6 +2177,9 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
 	if (intel_dp_is_edp(intel_dp))
 		intel_snps_phy_update_psr_power_state(&dp_to_dig_port(intel_dp)->base, false);
 
+	if (intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp))
+		intel_alpm_disable(intel_dp);
+
 	/* Disable PSR on Sink */
 	if (!intel_dp->psr.panel_replay_enabled) {
 		drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
@@ -3498,7 +3506,6 @@ static void psr_alpm_check(struct intel_dp *intel_dp)
 	if (intel_alpm_get_error(intel_dp)) {
 		intel_psr_disable_locked(intel_dp);
 		psr->sink_not_reliable = true;
-		intel_alpm_disable(intel_dp);
 	}
 }