Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:

   - Intel xe enable Panthor Lake, started adding WildCat Lake

   - amdgpu has a bunch of reset improvments along with the usual IP
     updates

   - msm got VM_BIND support which is important for vulkan sparse memory

   - more drm_panic users

   - gpusvm common code to handle a bunch of core SVM work outside
     drivers.

  Detail summary:

  Changes outside drm subdirectory:
   - 'shrink_shmem_memory()' for better shmem/hibernate interaction
   - Rust support infrastructure:
      - make ETIMEDOUT available
      - add size constants up to SZ_2G
      - add DMA coherent allocation bindings
   - mtd driver for Intel GPU non-volatile storage
   - i2c designware quirk for Intel xe

  core:
   - atomic helpers: tune enable/disable sequences
   - add task info to wedge API
   - refactor EDID quirks
   - connector: move HDR sink to drm_display_info
   - fourcc: half-float and 32-bit float formats
   - mode_config: pass format info to simplify

  dma-buf:
   - heaps: Give CMA heap a stable name

  ci:
   - add device tree validation and kunit

  displayport:
   - change AUX DPCD access probe address
   - add quirk for DPCD probe
   - add panel replay definitions
   - backlight control helpers

  fbdev:
   - make CONFIG_FIRMWARE_EDID available on all arches

  fence:
   - fix UAF issues

  format-helper:
   - improve tests

  gpusvm:
   - introduce devmem only flag for allocation
   - add timeslicing support to GPU SVM

  ttm:
   - improve eviction

  sched:
   - tracing improvements
   - kunit improvements
   - memory leak fixes
   - reset handling improvements

  color mgmt:
   - add hardware gamma LUT handling helpers

  bridge:
   - add destroy hook
   - switch to reference counted drm_bridge allocations
   - tc358767: convert to devm_drm_bridge_alloc
   - improve CEC handling

  panel:
   - switch to reference counter drm_panel allocations
   - fwnode panel lookup
   - Huiling hl055fhv028c support
   - Raspberry Pi 7" 720x1280 support
   - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK
   - simple: AUO P238HAN01
   - st7701: Winstar wf40eswaa6mnn0
   - visionox: rm69299-shift
   - Renesas R61307, Renesas R69328 support
   - DJN HX83112B

  hdmi:
   - add CEC handling
   - YUV420 output support

  xe:
   - WildCat Lake support
   - Enable PanthorLake by default
   - mark BMG as SRIOV capable
   - update firmware recommendations
   - Expose media OA units
   - aux-bux support for non-volatile memory
   - MTD intel-dg driver for non-volatile memory
   - Expose fan control and voltage regulator in sysfs
   - restructure migration for multi-device
   - Restore GuC submit UAF fix
   - make GEM shrinker drm managed
   - SRIOV VF Post-migration recovery of GGTT nodes
   - W/A additions/reworks
   - Prefetch support for svm ranges
   - Don't allocate managed BO for each policy change
   - HWMON fixes for BMG
   - Create LRC BO without VM
   - PCI ID updates
   - make SLPC debugfs files optional
   - rework eviction rejection of bound external BOs
   - consolidate PAT programming logic for pre/post Xe2
   - init changes for flicker-free boot
   - Enable GuC Dynamic Inhibit Context switch

  i915:
   - drm_panic support for i915/xe
   - initial flip queue off by default for LNL/PNL
   - Wildcat Lake Display support
   - Support for DSC fractional link bpp
   - Support for simultaneous Panel Replay and Adaptive sync
   - Support for PTL+ double buffer LUT
   - initial PIPEDMC event handling
   - drm_panel_follower support
   - DPLL interface renames
   - allocate struct intel_display dynamically
   - flip queue preperation
   - abstract DRAM detection better
   - avoid GuC scheduling stalls
   - remove DG1 force probe requirement
   - fix MEI interrupt handler on RT kernels
   - use backlight control helpers for eDP
   - more shared display code refactoring

  amdgpu:
   - add userq slot to INFO ioctl
   - SR-IOV hibernation support
   - Suspend improvements
   - Backlight improvements
   - Use scaling for non-native eDP modes
   - cleaner shader updates for GC 9.x
   - Remove fence slab
   - SDMA fw checks for userq support
   - RAS updates
   - DMCUB updates
   - DP tunneling fixes
   - Display idle D3 support
   - Per queue reset improvements
   - initial smartmux support

  amdkfd:
   - enable KFD on loongarch
   - mtype fix for ext coherent system memory

  radeon:
   - CS validation additional GL extensions
   - drop console lock during suspend/resume
   - bump driver version

  msm:
   - VM BIND support
   - CI: infrastructure updates
   - UBWC single source of truth
   - decouple GPU and KMS support
   - DP: rework I/O accessors
   - DPU: SM8750 support
   - DSI: SM8750 support
   - GPU: X1-45 support and speedbin support for X1-85
   - MDSS: SM8750 support

  nova:
   - register! macro improvements
   - DMA object abstraction
   - VBIOS parser + fwsec lookup
   - sysmem flush page support
   - falcon: generic falcon boot code and HAL
   - FWSEC-FRTS: fb setup and load/execute

  ivpu:
   - Add Wildcat Lake support
   - Add turbo flag

  ast:
   - improve hardware generations implementation

  imx:
   - IMX8qxq Display Controller support

  lima:
   - Rockchip RK3528 GPU support

  nouveau:
   - fence handling cleanup

  panfrost:
   - MT8370 support
   - bo labeling
   - 64-bit register access

  qaic:
   - add RAS support

  rockchip:
   - convert inno_hdmi to a bridge

  rz-du:
   - add RZ/V2H(P) support
   - MIPI-DSI DCS support

  sitronix:
   - ST7567 support

  sun4i:
   - add H616 support

  tidss:
   - add TI AM62L support
   - AM65x OLDI bridge support

  bochs:
   - drm panic support

  vkms:
   - YUV and R* format support
   - use faux device

  vmwgfx:
   - fence improvements

  hyperv:
   - move out of simple
   - add drm_panic support"

* tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits)
  drm/tidss: oldi: convert to devm_drm_bridge_alloc() API
  drm/tidss: encoder: convert to devm_drm_bridge_alloc()
  drm/amdgpu: move reset support type checks into the caller
  drm/amdgpu/sdma7: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma6: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx12: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx11: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx10: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset
  drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset
  drm/amdgpu: Add WARN_ON to the resource clear function
  drm/amd/pm: Use cached metrics data on SMUv13.0.6
  drm/amd/pm: Use cached data for min/max clocks
  gpu: nova-core: fix bounds check in PmuLookupTableEntry::new
  drm/amdgpu: Replace HQD terminology with slots naming
  drm/amdgpu: Add user queue instance count in HW IP info
  drm/amd/amdgpu: Add helper functions for isp buffers
  drm/amd/amdgpu: Initialize swnode for ISP MFD device
  ...

1 files changed, 78 insertions, 44 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/link/link_validation.c b/drivers/gpu/drm/amd/display/dc/link/link_validation.c
index 29606fda029d..aecaf37eee35 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_validation.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_validation.c
@@ -86,6 +86,10 @@ static bool dp_active_dongle_validate_timing(
 			if (!dongle_caps->is_dp_hdmi_ycbcr420_pass_through)
 				return false;
 			break;
+		case PIXEL_ENCODING_UNDEFINED:
+			/* These color depths are currently not supported */
+			ASSERT(false);
+			break;
 		default:
 			/* Invalid Pixel Encoding*/
 			return false;
@@ -104,6 +108,10 @@ static bool dp_active_dongle_validate_timing(
 			if (dongle_caps->dp_hdmi_max_bpc < 12)
 				return false;
 			break;
+		case COLOR_DEPTH_UNDEFINED:
+			/* These color depths are currently not supported */
+			ASSERT(false);
+			break;
 		case COLOR_DEPTH_141414:
 		case COLOR_DEPTH_161616:
 		default:
@@ -255,6 +263,14 @@ uint32_t dp_link_bandwidth_kbps(
 	return link_rate_per_lane_kbps * link_settings->lane_count / 10000 * total_data_bw_efficiency_x10000;
 }
 
+static uint32_t dp_get_timing_bandwidth_kbps(
+	const struct dc_crtc_timing *timing,
+	const struct dc_link *link)
+{
+	return dc_bandwidth_in_kbps_from_timing(timing,
+			dc_link_get_highest_encoding_format(link));
+}
+
 static bool dp_validate_mode_timing(
 	struct dc_link *link,
 	const struct dc_crtc_timing *timing)
@@ -351,63 +367,81 @@ enum dc_status link_validate_mode_timing(
 	return DC_OK;
 }
 
+static const struct dc_tunnel_settings *get_dp_tunnel_settings(const struct dc_state *context,
+		const struct dc_stream_state *stream)
+{
+	int i;
+	const struct dc_tunnel_settings *dp_tunnel_settings = NULL;
+
+	for (i = 0; i < MAX_PIPES; i++) {
+		if (context->res_ctx.pipe_ctx[i].stream && (context->res_ctx.pipe_ctx[i].stream == stream)) {
+			dp_tunnel_settings = &context->res_ctx.pipe_ctx[i].link_config.dp_tunnel_settings;
+			break;
+		}
+	}
+
+	return dp_tunnel_settings;
+}
+
 /*
- * This function calculates the bandwidth required for the stream timing
- * and aggregates the stream bandwidth for the respective dpia link
- *
- * @stream: pointer to the dc_stream_state struct instance
- * @num_streams: number of streams to be validated
+ * Calculates the DP tunneling bandwidth required for the stream timing
+ * and aggregates the stream bandwidth for the respective DP tunneling link
  *
- * return: true if validation is succeeded
+ * return: dc_status
  */
-bool link_validate_dpia_bandwidth(const struct dc_stream_state *stream, const unsigned int num_streams)
+enum dc_status link_validate_dp_tunnel_bandwidth(const struct dc *dc, const struct dc_state *new_ctx)
 {
-	int bw_needed[MAX_DPIA_NUM] = {0};
-	struct dc_link *dpia_link[MAX_DPIA_NUM] = {0};
-	int num_dpias = 0;
+	struct dc_validation_dpia_set dpia_link_sets[MAX_DPIA_NUM] = { 0 };
+	uint8_t link_count = 0;
+	enum dc_status result = DC_OK;
 
-	for (unsigned int i = 0; i < num_streams; ++i) {
-		if (stream[i].signal == SIGNAL_TYPE_DISPLAY_PORT) {
-			/* new dpia sst stream, check whether it exceeds max dpia */
-			if (num_dpias >= MAX_DPIA_NUM)
-				return false;
+	// Iterate through streams in the new context
+	for (uint8_t i = 0; (i < MAX_PIPES && i < new_ctx->stream_count); i++) {
+		const struct dc_stream_state *stream = new_ctx->streams[i];
+		const struct dc_link *link;
+		const struct dc_tunnel_settings *dp_tunnel_settings;
+		uint32_t timing_bw;
 
-			dpia_link[num_dpias] = stream[i].link;
-			bw_needed[num_dpias] = dc_bandwidth_in_kbps_from_timing(&stream[i].timing,
-					dc_link_get_highest_encoding_format(dpia_link[num_dpias]));
-			num_dpias++;
-		} else if (stream[i].signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
-			uint8_t j = 0;
-			/* check whether its a known dpia link */
-			for (; j < num_dpias; ++j) {
-				if (dpia_link[j] == stream[i].link)
-					break;
-			}
+		if (stream == NULL)
+			continue;
+
+		link = stream->link;
+
+		if (!(link && (stream->signal == SIGNAL_TYPE_DISPLAY_PORT
+				|| stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
+				&& link->hpd_status))
+			continue;
+
+		dp_tunnel_settings = get_dp_tunnel_settings(new_ctx, stream);
 
-			if (j == num_dpias) {
-				/* new dpia mst stream, check whether it exceeds max dpia */
-				if (num_dpias >= MAX_DPIA_NUM)
-					return false;
-				else {
-					dpia_link[j] = stream[i].link;
-					num_dpias++;
-				}
+		if ((dp_tunnel_settings == NULL) || (dp_tunnel_settings->should_use_dp_bw_allocation == false))
+			continue;
+
+		timing_bw = dp_get_timing_bandwidth_kbps(&stream->timing, link);
+
+		// Find an existing entry for this 'link' in 'dpia_link_sets'
+		for (uint8_t j = 0; j < MAX_DPIA_NUM; j++) {
+			bool is_new_slot = false;
+
+			if (dpia_link_sets[j].link == NULL) {
+				is_new_slot = true;
+				link_count++;
+				dpia_link_sets[j].required_bw = 0;
+				dpia_link_sets[j].link = link;
 			}
 
-			bw_needed[j] += dc_bandwidth_in_kbps_from_timing(&stream[i].timing,
-				dc_link_get_highest_encoding_format(dpia_link[j]));
+			if (is_new_slot || (dpia_link_sets[j].link == link)) {
+				dpia_link_sets[j].tunnel_settings = dp_tunnel_settings;
+				dpia_link_sets[j].required_bw += timing_bw;
+				break;
+			}
 		}
 	}
 
-	/* Include dp overheads */
-	for (uint8_t i = 0; i < num_dpias; ++i) {
-		int dp_overhead = 0;
-
-		dp_overhead = link_dp_dpia_get_dp_overhead_in_dp_tunneling(dpia_link[i]);
-		bw_needed[i] += dp_overhead;
-	}
+	if (link_count && link_dpia_validate_dp_tunnel_bandwidth(dpia_link_sets, link_count) == false)
+		result = DC_FAIL_DP_TUNNEL_BW_VALIDATE;
 
-	return dpia_validate_usb4_bw(dpia_link, bw_needed, num_dpias);
+	return result;
 }
 
 struct dp_audio_layout_config {