Merge tag 'drm-intel-next-2023-09-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

drm/i915 feature pull for v6.7:

Features and functionality:
- Early Xe2 LPD / Lunarlake (LNL) display enabling (Lucas, Matt, Gustavo,
  Stanislav, Luca, Clint, Juha-Pekka, Balasubramani, Ravi)
- Plenty of various DSC improvements and fixes (Ankit)
- Add DSC PPS state readout and verification (Suraj)
- Improve fastsets for VRR, LRR and M/N updates (Ville)
- Use connector->ddc to create (non-DP MST) connector sysfs ddc symlinks (Ville)
- Various DSB improvements, load LUTs using DSB (Ville)
- Improve shared link bandwidth management, starting with FDI (Imre)
- Optimize get param ioctl for PXP status (Alan)
- Remove DG2 pre-production hardware workarounds (Matt)
- Add more RPL P/U PCI IDs (Dnyaneshwar)
- Add new DG2-G12 stepping (Swati)
- Add PSR sink error status to debugfs (Jouni)
- Add DP enhanced framing to crtc state checker (Ville)

Refactoring and cleanups:
- Simplify TileY/Tile4 tiling selftest enumeration (Matt)
- Remove some unused power domain code (Gustavo)
- Check stepping of display IP version rather than MTL platform (Matt)
- DP audio compute config cleanups (Vinod)
- SDVO cleanups and refactoring, more robust failure handling (Ville)
- Color register definition and readout cleanups (Jani)
- Reduce header interdependencies for frontbuffer tracking (Jani)
- Continue replacing struct edid with struct drm_edid (Jani)
- Use source physical address instead of EDID for CEC (Jani)
- Clean up Type-C port lane count functions (Luca)
- Clean up DSC PPS register definitions and readout (Jani)
- Stop using GEM_BUG_ON()/GEM_WARN_ON() in display code (Jani)
- Move more of the display probe to display code (Jani)
- Remove redundant runtime suspended state flag (Jouni)
- Move display info printing to display code (Balasubramani)
- Frontbuffer tracking improvements (Jouni)
- Add trailing newlines to debug logging (Jim Cromie)
- Separate display workarounds from clock gating init (Matt)
- Reduce dmesg log spamming for combo PHY, PLL state, FEC, DP MST (Ville, Imre)

Fixes:
- Fix hotplug poll detect loops via suspend/resume (Imre)
- Fix hotplug detect for forced connectors (Imre)
- Fix DSC first_line_bpg_offset calculation (Suraj)
- Fix debug prints for SDP CRC16 (Arun)
- Fix PXP runtime resume (Alan)
- Fix cx0 PHY lane handling (Gustavo)
- Fix frontbuffer tracking locking in debugfs (Juha-Pekka)
- Fix SDVO detect on some models (Ville)
- Fix SDP split configuration for DP MST (Vinod)
- Fix AUX usage and reads for HDCP on DP MST (Suraj)
- Fix PSR workaround (Jouni)
- Fix redundant AUX power get/put in DP force (Imre)
- Fix ICL DSI TCLK POST by letting hardware handle it (William)
- Fix IRQ reset for XE LP+ (Gustavo)
- Fix h/vsync_end instead of h/vtotal in VBT (Ville)
- Fix C20 PHY msgbus timeout issues (Gustavo)
- Fix pre-TGL FEC pipe A vs. DDI A mixup (Ville)
- Fix FEC state readout for DP MST (Ville)

DRM subsystem core changes:
- Assume sink supports 8 bpc when DSC is supported (Ankit)
- Add drm_edid_is_digital() helper (Jani)
- Parse source physical address from EDID (Jani)
- Add function to attach CEC without EDID (Jani)
- Reorder connector sysfs/debugfs remove (Ville)
- Register connector sysfs ddc symlink later (Ville)

Media subsystem changes:
- Add comments about CEC source physical address usage (Jani)

Merges:
- Backmerge drm-next to get v6.6-rc1 (Jani)

Signed-off-by: Dave Airlie <airlied@redhat.com>

# Conflicts:
#	drivers/gpu/drm/i915/i915_drv.h
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87r0mhi7a6.fsf@intel.com

1 files changed, 97 insertions, 59 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 5f73cdabe7a1..648cf37e02a8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -155,15 +155,24 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
 	const struct drm_display_mode *adjusted_mode =
 		&crtc_state->hw.adjusted_mode;
 	int slots = -EINVAL;
+	int link_bpp;
 
-	slots = intel_dp_mst_find_vcpi_slots_for_bpp(encoder, crtc_state, limits->max_bpp,
-						     limits->min_bpp, limits,
+	/*
+	 * FIXME: allocate the BW according to link_bpp, which in the case of
+	 * YUV420 is only half of the pipe bpp value.
+	 */
+	slots = intel_dp_mst_find_vcpi_slots_for_bpp(encoder, crtc_state,
+						     to_bpp_int(limits->link.max_bpp_x16),
+						     to_bpp_int(limits->link.min_bpp_x16),
+						     limits,
 						     conn_state, 2 * 3, false);
 
 	if (slots < 0)
 		return slots;
 
-	intel_link_compute_m_n(crtc_state->pipe_bpp,
+	link_bpp = intel_dp_output_bpp(crtc_state->output_format, crtc_state->pipe_bpp);
+
+	intel_link_compute_m_n(link_bpp,
 			       crtc_state->lane_count,
 			       adjusted_mode->crtc_clock,
 			       crtc_state->port_clock,
@@ -200,8 +209,8 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder,
 	else
 		dsc_max_bpc = min_t(u8, 10, conn_state->max_requested_bpc);
 
-	max_bpp = min_t(u8, dsc_max_bpc * 3, limits->max_bpp);
-	min_bpp = limits->min_bpp;
+	max_bpp = min_t(u8, dsc_max_bpc * 3, limits->pipe.max_bpp);
+	min_bpp = limits->pipe.min_bpp;
 
 	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(intel_dp->dsc_dpcd,
 						       dsc_bpc);
@@ -228,6 +237,9 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder,
 	if (max_bpp > sink_max_bpp)
 		max_bpp = sink_max_bpp;
 
+	min_bpp = max(min_bpp, to_bpp_int_roundup(limits->link.min_bpp_x16));
+	max_bpp = min(max_bpp, to_bpp_int(limits->link.max_bpp_x16));
+
 	slots = intel_dp_mst_find_vcpi_slots_for_bpp(encoder, crtc_state, max_bpp,
 						     min_bpp, limits,
 						     conn_state, 2 * 3, true);
@@ -290,17 +302,39 @@ static int intel_dp_mst_update_slots(struct intel_encoder *encoder,
 	return 0;
 }
 
-static bool intel_dp_mst_has_audio(const struct drm_connector_state *conn_state)
+static bool
+intel_dp_mst_compute_config_limits(struct intel_dp *intel_dp,
+				   struct intel_crtc_state *crtc_state,
+				   bool dsc,
+				   struct link_config_limits *limits)
 {
-	const struct intel_digital_connector_state *intel_conn_state =
-		to_intel_digital_connector_state(conn_state);
-	struct intel_connector *connector =
-		to_intel_connector(conn_state->connector);
+	/*
+	 * for MST we always configure max link bw - the spec doesn't
+	 * seem to suggest we should do otherwise.
+	 */
+	limits->min_rate = limits->max_rate =
+		intel_dp_max_link_rate(intel_dp);
 
-	if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
-		return connector->base.display_info.has_audio;
-	else
-		return intel_conn_state->force_audio == HDMI_AUDIO_ON;
+	limits->min_lane_count = limits->max_lane_count =
+		intel_dp_max_lane_count(intel_dp);
+
+	limits->pipe.min_bpp = intel_dp_min_bpp(crtc_state->output_format);
+	/*
+	 * FIXME: If all the streams can't fit into the link with
+	 * their current pipe_bpp we should reduce pipe_bpp across
+	 * the board until things start to fit. Until then we
+	 * limit to <= 8bpc since that's what was hardcoded for all
+	 * MST streams previously. This hack should be removed once
+	 * we have the proper retry logic in place.
+	 */
+	limits->pipe.max_bpp = min(crtc_state->pipe_bpp, 24);
+
+	intel_dp_adjust_compliance_config(intel_dp, crtc_state, limits);
+
+	return intel_dp_compute_config_link_bpp_limits(intel_dp,
+						       crtc_state,
+						       dsc,
+						       limits);
 }
 
 static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
@@ -313,7 +347,8 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 	const struct drm_display_mode *adjusted_mode =
 		&pipe_config->hw.adjusted_mode;
 	struct link_config_limits limits;
-	int ret;
+	bool dsc_needed;
+	int ret = 0;
 
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
 		return -EINVAL;
@@ -322,42 +357,40 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
 	pipe_config->has_pch_encoder = false;
 
-	pipe_config->has_audio =
-		intel_dp_mst_has_audio(conn_state) &&
-		intel_audio_compute_config(encoder, pipe_config, conn_state);
+	dsc_needed = intel_dp->force_dsc_en ||
+		     !intel_dp_mst_compute_config_limits(intel_dp,
+							 pipe_config,
+							 false,
+							 &limits);
 
-	/*
-	 * for MST we always configure max link bw - the spec doesn't
-	 * seem to suggest we should do otherwise.
-	 */
-	limits.min_rate =
-	limits.max_rate = intel_dp_max_link_rate(intel_dp);
+	if (!dsc_needed) {
+		ret = intel_dp_mst_compute_link_config(encoder, pipe_config,
+						       conn_state, &limits);
 
-	limits.min_lane_count =
-	limits.max_lane_count = intel_dp_max_lane_count(intel_dp);
-
-	limits.min_bpp = intel_dp_min_bpp(pipe_config->output_format);
-	/*
-	 * FIXME: If all the streams can't fit into the link with
-	 * their current pipe_bpp we should reduce pipe_bpp across
-	 * the board until things start to fit. Until then we
-	 * limit to <= 8bpc since that's what was hardcoded for all
-	 * MST streams previously. This hack should be removed once
-	 * we have the proper retry logic in place.
-	 */
-	limits.max_bpp = min(pipe_config->pipe_bpp, 24);
-
-	intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits);
-
-	ret = intel_dp_mst_compute_link_config(encoder, pipe_config,
-					       conn_state, &limits);
+		if (ret == -EDEADLK)
+			return ret;
 
-	if (ret == -EDEADLK)
-		return ret;
+		if (ret)
+			dsc_needed = true;
+	}
 
 	/* enable compression if the mode doesn't fit available BW */
-	drm_dbg_kms(&dev_priv->drm, "Force DSC en = %d\n", intel_dp->force_dsc_en);
-	if (ret || intel_dp->force_dsc_en) {
+	if (dsc_needed) {
+		drm_dbg_kms(&dev_priv->drm, "Try DSC (fallback=%s, force=%s)\n",
+			    str_yes_no(ret),
+			    str_yes_no(intel_dp->force_dsc_en));
+
+		if (!intel_dp_mst_compute_config_limits(intel_dp,
+							pipe_config,
+							true,
+							&limits))
+			return -EINVAL;
+
+		/*
+		 * FIXME: As bpc is hardcoded to 8, as mentioned above,
+		 * WARN and ignore the debug flag force_dsc_bpc for now.
+		 */
+		drm_WARN(&dev_priv->drm, intel_dp->force_dsc_bpc, "Cannot Force BPC for MST\n");
 		/*
 		 * Try to get at least some timeslots and then see, if
 		 * we can fit there with DSC.
@@ -388,6 +421,8 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 		pipe_config->lane_lat_optim_mask =
 			bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
 
+	intel_dp_audio_compute_config(encoder, pipe_config, conn_state);
+
 	intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
 
 	return 0;
@@ -733,8 +768,8 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
 	ret = drm_dp_add_payload_part1(&intel_dp->mst_mgr, mst_state,
 				       drm_atomic_get_mst_payload_state(mst_state, connector->port));
 	if (ret < 0)
-		drm_err(&dev_priv->drm, "Failed to create MST payload for %s: %d\n",
-			connector->base.name, ret);
+		drm_dbg_kms(&dev_priv->drm, "Failed to create MST payload for %s: %d\n",
+			    connector->base.name, ret);
 
 	/*
 	 * Before Gen 12 this is not done as part of
@@ -798,6 +833,8 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
 		intel_de_rmw(dev_priv, CHICKEN_TRANS(trans), 0,
 			     FECSTALL_DIS_DPTSTREAM_DPTTG);
 
+	intel_audio_sdp_split_update(pipe_config);
+
 	intel_enable_transcoder(pipe_config);
 
 	intel_crtc_vblank_on(pipe_config);
@@ -918,7 +955,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 	int max_rate, mode_rate, max_lanes, max_link_clock;
 	int ret;
 	bool dsc = false, bigjoiner = false;
-	u16 dsc_max_output_bpp = 0;
+	u16 dsc_max_compressed_bpp = 0;
 	u8 dsc_slice_count = 0;
 	int target_clock = mode->clock;
 
@@ -969,17 +1006,18 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 		 * TBD pass the connector BPC,
 		 * for now U8_MAX so that max BPC on that platform would be picked
 		 */
-		int pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, U8_MAX);
+		int pipe_bpp = intel_dp_dsc_compute_max_bpp(intel_dp, U8_MAX);
 
 		if (drm_dp_sink_supports_fec(intel_dp->fec_capable)) {
-			dsc_max_output_bpp =
-				intel_dp_dsc_get_output_bpp(dev_priv,
-							    max_link_clock,
-							    max_lanes,
-							    target_clock,
-							    mode->hdisplay,
-							    bigjoiner,
-							    pipe_bpp, 64) >> 4;
+			dsc_max_compressed_bpp =
+				intel_dp_dsc_get_max_compressed_bpp(dev_priv,
+								    max_link_clock,
+								    max_lanes,
+								    target_clock,
+								    mode->hdisplay,
+								    bigjoiner,
+								    INTEL_OUTPUT_FORMAT_RGB,
+								    pipe_bpp, 64);
 			dsc_slice_count =
 				intel_dp_dsc_get_slice_count(intel_dp,
 							     target_clock,
@@ -987,7 +1025,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 							     bigjoiner);
 		}
 
-		dsc = dsc_max_output_bpp && dsc_slice_count;
+		dsc = dsc_max_compressed_bpp && dsc_slice_count;
 	}
 
 	/*