Merge tag 'drm-fixes-2025-11-28' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Last one for this round hopefully, mostly the usual suspects,
  xe/amdgpu, with some single fixes otherwise.

  There is one amdgpu HDMI blackscreen bug that came in late in the
  cycle, but it was bisected and the revert is in here.

  i915:
   - Reject async flips when PSR's selective fetch is enabled

  xe:
   - Fix resource leak in xe_guc_ct_init_noalloc()'s error path
   - Fix stack_depot usage without STACKDEPOT_ALWAYS_INIT
   - Fix overflow in conversion from clock tics to msec

  amdgpu:
   - Unified MES fix
   - HDMI fix
   - Cursor fix
   - Bightness fix
   - EDID reading improvement
   - UserQ fix
   - Cyan Skillfish IP discovery fix

  bridge:
   - sil902x: Fix HDMI detection

  imagination:
   - Update documentation

  sti:
   - Fix leaks in probe

  vga_switcheroo:
   - Avoid race condition during fbcon initialization"

* tag 'drm-fixes-2025-11-28' of https://gitlab.freedesktop.org/drm/kernel:
  drm/amdgpu: fix cyan_skillfish2 gpu info fw handling
  drm/amdgpu: attach tlb fence to the PTs update
  drm/amd/display: Increase EDID read retries
  drm/amd/display: Don't change brightness for disabled connectors
  drm/amd/display: Check NULL before accessing
  Revert "drm/amd/display: Move setup_stream_attribute"
  drm/xe: Fix conversion from clock ticks to milliseconds
  drm/xe/guc: Fix stack_depot usage
  drm/xe/guc: Fix resource leak in xe_guc_ct_init_noalloc()
  drm/i915/psr: Reject async flips when selective fetch is enabled
  drm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup
  drm/amd/amdgpu: reserve vm invalidation engine for uni_mes
  drm: sti: fix device leaks at component probe
  drm/imagination: Document pvr_device.power member
  drm/bridge: sii902x: Fix HDMI detection with DRM_BRIDGE_ATTACH_NO_CONNECTOR

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -2638,6 +2638,8 @@ static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev)
 		chip_name = "navi12";
 		break;
 	case CHIP_CYAN_SKILLFISH:
+		if (adev->mman.discovery_bin)
+			return 0;
 		chip_name = "cyan_skillfish";
 		break;
 	}

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

@@ -597,6 +597,9 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev)
 		/* reserve engine 5 for firmware */
 		if (adev->enable_mes)
 			vm_inv_engs[i] &= ~(1 << 5);
+		/* reserve engine 6 for uni mes */
+		if (adev->enable_uni_mes)
+			vm_inv_engs[i] &= ~(1 << 6);
 		/* reserve mmhub engine 3 for firmware */
 		if (adev->enable_umsch_mm)
 			vm_inv_engs[i] &= ~(1 << 3);

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -1066,7 +1066,7 @@ amdgpu_vm_tlb_flush(struct amdgpu_vm_update_params *params,
 	}
 
 	/* Prepare a TLB flush fence to be attached to PTs */
-	if (!params->unlocked && vm->is_compute_context) {
+	if (!params->unlocked) {
 		amdgpu_vm_tlb_fence_create(params->adev, vm, fence);
 
 		/* Makes sure no PD/PT is freed before the flush */

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -5052,6 +5052,21 @@ static void amdgpu_dm_backlight_set_level(struct amdgpu_display_manager *dm,
 	struct dc_link *link;
 	u32 brightness;
 	bool rc, reallow_idle = false;
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dm->ddev->mode_config.connector_list, head) {
+		struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
+
+		if (aconnector->bl_idx != bl_idx)
+			continue;
+
+		/* if connector is off, save the brightness for next time it's on */
+		if (!aconnector->base.encoder) {
+			dm->brightness[bl_idx] = user_brightness;
+			dm->actual_brightness[bl_idx] = 0;
+			return;
+		}
+	}
 
 	amdgpu_dm_update_backlight_caps(dm, bl_idx);
 	caps = &dm->backlight_caps[bl_idx];

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

@@ -997,8 +997,8 @@ enum dc_edid_status dm_helpers_read_local_edid(
 	struct amdgpu_dm_connector *aconnector = link->priv;
 	struct drm_connector *connector = &aconnector->base;
 	struct i2c_adapter *ddc;
-	int retry = 3;
-	enum dc_edid_status edid_status;
+	int retry = 25;
+	enum dc_edid_status edid_status = EDID_NO_RESPONSE;
 	const struct drm_edid *drm_edid;
 	const struct edid *edid;
 
@@ -1028,7 +1028,7 @@ enum dc_edid_status dm_helpers_read_local_edid(
 		}
 
 		if (!drm_edid)
-			return EDID_NO_RESPONSE;
+			continue;
 
 		edid = drm_edid_raw(drm_edid); // FIXME: Get rid of drm_edid_raw()
 		if (!edid ||
@@ -1046,7 +1046,7 @@ enum dc_edid_status dm_helpers_read_local_edid(
 						&sink->dc_edid,
 						&sink->edid_caps);
 
-	} while (edid_status == EDID_BAD_CHECKSUM && --retry > 0);
+	} while ((edid_status == EDID_BAD_CHECKSUM || edid_status == EDID_NO_RESPONSE) && --retry > 0);
 
 	if (edid_status != EDID_OK)
 		DRM_ERROR("EDID err: %d, on connector: %s",

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

@@ -705,9 +705,14 @@ bool dc_stream_get_scanoutpos(const struct dc_stream_state *stream,
 {
 	uint8_t i;
 	bool ret = false;
-	struct dc  *dc = stream->ctx->dc;
-	struct resource_context *res_ctx =
-		&dc->current_state->res_ctx;
+	struct dc  *dc;
+	struct resource_context *res_ctx;
+
+	if (!stream->ctx)
+		return false;
+
+	dc = stream->ctx->dc;
+	res_ctx = &dc->current_state->res_ctx;
 
 	dc_exit_ips_for_hw_access(dc);
 

drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c

@@ -671,7 +671,6 @@ void dce110_enable_stream(struct pipe_ctx *pipe_ctx)
 	uint32_t early_control = 0;
 	struct timing_generator *tg = pipe_ctx->stream_res.tg;
 
-	link_hwss->setup_stream_attribute(pipe_ctx);
 	link_hwss->setup_stream_encoder(pipe_ctx);
 
 	dc->hwss.update_info_frame(pipe_ctx);

drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c

@@ -3060,8 +3060,6 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 						      link_enc->transmitter - TRANSMITTER_UNIPHY_A);
 	}
 
-	link_hwss->setup_stream_attribute(pipe_ctx);
-
 	if (dc->res_pool->dccg->funcs->set_pixel_rate_div)
 		dc->res_pool->dccg->funcs->set_pixel_rate_div(
 			dc->res_pool->dccg,

drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c

@@ -971,8 +971,6 @@ void dcn401_enable_stream(struct pipe_ctx *pipe_ctx)
 		}
 	}
 
-	link_hwss->setup_stream_attribute(pipe_ctx);
-
 	if (dc->res_pool->dccg->funcs->set_pixel_rate_div) {
 		dc->res_pool->dccg->funcs->set_pixel_rate_div(
 			dc->res_pool->dccg,

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

@@ -2458,6 +2458,7 @@ void link_set_dpms_on(
 	struct link_encoder *link_enc = pipe_ctx->link_res.dio_link_enc;
 	enum otg_out_mux_dest otg_out_dest = OUT_MUX_DIO;
 	struct vpg *vpg = pipe_ctx->stream_res.stream_enc->vpg;
+	const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
 	bool apply_edp_fast_boot_optimization =
 		pipe_ctx->stream->apply_edp_fast_boot_optimization;
 
@@ -2502,6 +2503,8 @@ void link_set_dpms_on(
 		pipe_ctx->stream_res.tg->funcs->set_out_mux(pipe_ctx->stream_res.tg, otg_out_dest);
 	}
 
+	link_hwss->setup_stream_attribute(pipe_ctx);
+
 	pipe_ctx->stream->apply_edp_fast_boot_optimization = false;
 
 	// Enable VPG before building infoframe

drivers/gpu/drm/amd/display/dc/virtual/virtual_stream_encoder.c

@@ -44,11 +44,6 @@ static void virtual_stream_encoder_dvi_set_stream_attribute(
 	struct dc_crtc_timing *crtc_timing,
 	bool is_dual_link) {}
 
-static void virtual_stream_encoder_lvds_set_stream_attribute(
-	struct stream_encoder *enc,
-	struct dc_crtc_timing *crtc_timing)
-{}
-
 static void virtual_stream_encoder_set_throttled_vcp_size(
 	struct stream_encoder *enc,
 	struct fixed31_32 avg_time_slots_per_mtp)
@@ -120,8 +115,6 @@ static const struct stream_encoder_funcs virtual_str_enc_funcs = {
 		virtual_stream_encoder_hdmi_set_stream_attribute,
 	.dvi_set_stream_attribute =
 		virtual_stream_encoder_dvi_set_stream_attribute,
-	.lvds_set_stream_attribute =
-		virtual_stream_encoder_lvds_set_stream_attribute,
 	.set_throttled_vcp_size =
 		virtual_stream_encoder_set_throttled_vcp_size,
 	.update_hdmi_info_packets =

drivers/gpu/drm/bridge/sii902x.c

@@ -179,7 +179,6 @@ struct sii902x {
 	struct drm_connector connector;
 	struct gpio_desc *reset_gpio;
 	struct i2c_mux_core *i2cmux;
-	bool sink_is_hdmi;
 	u32 bus_width;
 
 	/*
@@ -315,8 +314,6 @@ static int sii902x_get_modes(struct drm_connector *connector)
 		drm_edid_free(drm_edid);
 	}
 
-	sii902x->sink_is_hdmi = connector->display_info.is_hdmi;
-
 	return num;
 }
 
@@ -342,9 +339,17 @@ static void sii902x_bridge_atomic_enable(struct drm_bridge *bridge,
 					 struct drm_atomic_state *state)
 {
 	struct sii902x *sii902x = bridge_to_sii902x(bridge);
+	struct drm_connector *connector;
+	u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI;
+
+	connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
+	if (connector && connector->display_info.is_hdmi)
+		output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI;
 
 	mutex_lock(&sii902x->mutex);
 
+	regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,
+			   SII902X_SYS_CTRL_OUTPUT_MODE, output_mode);
 	regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL,
 			   SII902X_AVI_POWER_STATE_MSK,
 			   SII902X_AVI_POWER_STATE_D(0));
@@ -359,16 +364,12 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
 				    const struct drm_display_mode *adj)
 {
 	struct sii902x *sii902x = bridge_to_sii902x(bridge);
-	u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI;
 	struct regmap *regmap = sii902x->regmap;
 	u8 buf[HDMI_INFOFRAME_SIZE(AVI)];
 	struct hdmi_avi_infoframe frame;
 	u16 pixel_clock_10kHz = adj->clock / 10;
 	int ret;
 
-	if (sii902x->sink_is_hdmi)
-		output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI;
-
 	buf[0] = pixel_clock_10kHz & 0xff;
 	buf[1] = pixel_clock_10kHz >> 8;
 	buf[2] = drm_mode_vrefresh(adj);
@@ -384,11 +385,6 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
 
 	mutex_lock(&sii902x->mutex);
 
-	ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,
-				 SII902X_SYS_CTRL_OUTPUT_MODE, output_mode);
-	if (ret)
-		goto out;
-
 	ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10);
 	if (ret)
 		goto out;

drivers/gpu/drm/drm_fb_helper.c

@@ -31,9 +31,7 @@
 
 #include <linux/console.h>
 #include <linux/export.h>
-#include <linux/pci.h>
 #include <linux/sysrq.h>
-#include <linux/vga_switcheroo.h>
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_drv.h>
@@ -566,11 +564,6 @@ EXPORT_SYMBOL(drm_fb_helper_release_info);
  */
 void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper)
 {
-	struct fb_info *info = fb_helper->info;
-	struct device *dev = info->device;
-
-	if (dev_is_pci(dev))
-		vga_switcheroo_client_fb_set(to_pci_dev(dev), NULL);
 	unregister_framebuffer(fb_helper->info);
 }
 EXPORT_SYMBOL(drm_fb_helper_unregister_info);
@@ -1632,7 +1625,6 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper)
 	struct drm_client_dev *client = &fb_helper->client;
 	struct drm_device *dev = fb_helper->dev;
 	struct drm_fb_helper_surface_size sizes;
-	struct fb_info *info;
 	int ret;
 
 	if (drm_WARN_ON(dev, !dev->driver->fbdev_probe))
@@ -1653,12 +1645,6 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper)
 
 	strcpy(fb_helper->fb->comm, "[fbcon]");
 
-	info = fb_helper->info;
-
-	/* Set the fb info for vgaswitcheroo clients. Does nothing otherwise. */
-	if (dev_is_pci(info->device))
-		vga_switcheroo_client_fb_set(to_pci_dev(info->device), info);
-
 	return 0;
 }
 

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

@@ -5964,6 +5964,14 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
 		return -EINVAL;
 	}
 
+	/* FIXME: selective fetch should be disabled for async flips */
+	if (new_crtc_state->enable_psr2_sel_fetch) {
+		drm_dbg_kms(display->drm,
+			    "[CRTC:%d:%s] async flip disallowed with PSR2 selective fetch\n",
+			    crtc->base.base.id, crtc->base.name);
+		return -EINVAL;
+	}
+
 	for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
 					     new_plane_state, i) {
 		if (plane->pipe != crtc->pipe)

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

@@ -1256,12 +1256,6 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (crtc_state->uapi.async_flip) {
-		drm_dbg_kms(display->drm,
-			    "PSR2 sel fetch not enabled, async flip enabled\n");
-		return false;
-	}
-
 	return crtc_state->enable_psr2_sel_fetch = true;
 }
 

drivers/gpu/drm/imagination/pvr_device.h

@@ -146,6 +146,14 @@ struct pvr_device {
 	 */
 	struct clk *mem_clk;
 
+	/**
+	 * @power: Optional power domain devices.
+	 *
+	 * On platforms with more than one power domain for the GPU, they are
+	 * stored here in @domain_devs, along with links between them in
+	 * @domain_links. The size of @domain_devs is given by @domain_count,
+	 * while the size of @domain_links is (2 * @domain_count) - 1.
+	 */
 	struct pvr_device_power {
 		struct device **domain_devs;
 		struct device_link **domain_links;

drivers/gpu/drm/sti/sti_vtg.c

@@ -143,12 +143,17 @@ struct sti_vtg {
 struct sti_vtg *of_vtg_find(struct device_node *np)
 {
 	struct platform_device *pdev;
+	struct sti_vtg *vtg;
 
 	pdev = of_find_device_by_node(np);
 	if (!pdev)
 		return NULL;
 
-	return (struct sti_vtg *)platform_get_drvdata(pdev);
+	vtg = platform_get_drvdata(pdev);
+
+	put_device(&pdev->dev);
+
+	return vtg;
 }
 
 static void vtg_reset(struct sti_vtg *vtg)

drivers/gpu/drm/xe/xe_gt_clock.c

@@ -93,11 +93,6 @@ int xe_gt_clock_init(struct xe_gt *gt)
 	return 0;
 }
 
-static u64 div_u64_roundup(u64 n, u32 d)
-{
-	return div_u64(n + d - 1, d);
-}
-
 /**
  * xe_gt_clock_interval_to_ms - Convert sampled GT clock ticks to msec
  *
@@ -108,5 +103,5 @@ static u64 div_u64_roundup(u64 n, u32 d)
  */
 u64 xe_gt_clock_interval_to_ms(struct xe_gt *gt, u64 count)
 {
-	return div_u64_roundup(count * MSEC_PER_SEC, gt->info.reference_clock);
+	return mul_u64_u32_div(count, MSEC_PER_SEC, gt->info.reference_clock);
 }

drivers/gpu/drm/xe/xe_guc_ct.c

@@ -226,6 +226,12 @@ int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct)
 
 	xe_gt_assert(gt, !(guc_ct_size() % PAGE_SIZE));
 
+	err = drmm_mutex_init(&xe->drm, &ct->lock);
+	if (err)
+		return err;
+
+	primelockdep(ct);
+
 	ct->g2h_wq = alloc_ordered_workqueue("xe-g2h-wq", WQ_MEM_RECLAIM);
 	if (!ct->g2h_wq)
 		return -ENOMEM;
@@ -237,16 +243,13 @@ int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct)
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
 	spin_lock_init(&ct->dead.lock);
 	INIT_WORK(&ct->dead.worker, ct_dead_worker_func);
+#if IS_ENABLED(CONFIG_DRM_XE_DEBUG_GUC)
+	stack_depot_init();
+#endif
 #endif
 	init_waitqueue_head(&ct->wq);
 	init_waitqueue_head(&ct->g2h_fence_wq);
 
-	err = drmm_mutex_init(&xe->drm, &ct->lock);
-	if (err)
-		return err;
-
-	primelockdep(ct);
-
 	err = drmm_add_action_or_reset(&xe->drm, guc_ct_fini, ct);
 	if (err)
 		return err;

drivers/video/fbdev/core/fbcon.c

@@ -66,6 +66,7 @@
 #include <linux/string.h>
 #include <linux/kd.h>
 #include <linux/panic.h>
+#include <linux/pci.h>
 #include <linux/printk.h>
 #include <linux/slab.h>
 #include <linux/fb.h>
@@ -78,6 +79,7 @@
 #include <linux/interrupt.h>
 #include <linux/crc32.h> /* For counting font checksums */
 #include <linux/uaccess.h>
+#include <linux/vga_switcheroo.h>
 #include <asm/irq.h>
 
 #include "fbcon.h"
@@ -2899,6 +2901,9 @@ void fbcon_fb_unregistered(struct fb_info *info)
 
 	console_lock();
 
+	if (info->device && dev_is_pci(info->device))
+		vga_switcheroo_client_fb_set(to_pci_dev(info->device), NULL);
+
 	fbcon_registered_fb[info->node] = NULL;
 	fbcon_num_registered_fb--;
 
@@ -3032,6 +3037,10 @@ static int do_fb_registered(struct fb_info *info)
 		}
 	}
 
+	/* Set the fb info for vga_switcheroo clients. Does nothing otherwise. */
+	if (info->device && dev_is_pci(info->device))
+		vga_switcheroo_client_fb_set(to_pci_dev(info->device), info);
+
 	return ret;
 }