Merge tag 'drm-misc-next-2025-10-02' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.19:

UAPI Changes:

Cross-subsystem Changes:
-  fbcon cleanups.
- Make drivers depend on FB_TILEBLITTING instead of selecting it,
  and hide FB_MODE_HELPERS.

Core Changes:
- More preparations for rust.
- Throttle dirty worker with vblank
- Use drm_for_each_bridge_in_chain_scoped in drm's bridge code and
  assorted fixes.
- Ensure drm_client_modeset tests are enabled in UML.
- Rename ttm_bo_put to ttm_bo_fini, as a further step in removing the
  TTM bo refcount.
- Add POST_LT_ADJ_REQ training sequence.
- Show list of removed but still allocated bridges.
- Add a simulated vblank interrupt for hardware without it,
  and add some helpers to use them in vkms and hypervdrm.

Driver Changes:
- Assorted small fixes, cleanups and updates to host1x, tegra,
  panthor,   amdxdna, gud, vc4, ssd130x, ivpu, panfrost, panthor,
  sysfb, bridge/sn65dsi86, solomon, ast, tidss.
- Convert drivers from using .round_rate() to .determine_rate()
- Add support for KD116N3730A07/A12, chromebook mt8189, JT101TM023,
  LQ079L1SX01, raspberrypi 5" panels.
- Improve reclocking on tegra186+ with nouveau.
- Improve runtime pm in amdxdna.
- Add support for HTX_PAI in imx.
- Use a helper to calculate dumb buffer sizes in most drivers.

Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/b412fb91-8545-466a-8102-d89c0f2758a7@linux.intel.com

3 files changed, 32 insertions, 13 deletions

diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c
index 4c202fc5ce05..fdbe89ef7f43 100644
--- a/drivers/gpu/drm/panthor/panthor_drv.c
+++ b/drivers/gpu/drm/panthor/panthor_drv.c
@@ -1105,7 +1105,7 @@ static int panthor_ioctl_group_create(struct drm_device *ddev, void *data,
 	if (ret)
 		goto out;
 
-	ret = panthor_group_create(pfile, args, queue_args);
+	ret = panthor_group_create(pfile, args, queue_args, file->client_id);
 	if (ret < 0)
 		goto out;
 	args->group_handle = ret;
diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
index 3d1f57e3990f..f5e01cb16cfc 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.c
+++ b/drivers/gpu/drm/panthor/panthor_sched.c
@@ -360,6 +360,9 @@ struct panthor_queue {
 	/** @entity: DRM scheduling entity used for this queue. */
 	struct drm_sched_entity entity;
 
+	/** @name: DRM scheduler name for this queue. */
+	char *name;
+
 	/**
 	 * @remaining_time: Time remaining before the job timeout expires.
 	 *
@@ -900,6 +903,8 @@ static void group_free_queue(struct panthor_group *group, struct panthor_queue *
 	if (queue->scheduler.ops)
 		drm_sched_fini(&queue->scheduler);
 
+	kfree(queue->name);
+
 	panthor_queue_put_syncwait_obj(queue);
 
 	panthor_kernel_bo_destroy(queue->ringbuf);
@@ -1411,7 +1416,7 @@ cs_slot_process_fault_event_locked(struct panthor_device *ptdev,
 	fault = cs_iface->output->fault;
 	info = cs_iface->output->fault_info;
 
-	if (queue && CS_EXCEPTION_TYPE(fault) == DRM_PANTHOR_EXCEPTION_CS_INHERIT_FAULT) {
+	if (queue) {
 		u64 cs_extract = queue->iface.output->extract;
 		struct panthor_job *job;
 
@@ -3307,9 +3312,10 @@ static u32 calc_profiling_ringbuf_num_slots(struct panthor_device *ptdev,
 
 static struct panthor_queue *
 group_create_queue(struct panthor_group *group,
-		   const struct drm_panthor_queue_create *args)
+		   const struct drm_panthor_queue_create *args,
+		   u64 drm_client_id, u32 gid, u32 qid)
 {
-	const struct drm_sched_init_args sched_args = {
+	struct drm_sched_init_args sched_args = {
 		.ops = &panthor_queue_sched_ops,
 		.submit_wq = group->ptdev->scheduler->wq,
 		.num_rqs = 1,
@@ -3322,7 +3328,6 @@ group_create_queue(struct panthor_group *group,
 		.credit_limit = args->ringbuf_size / sizeof(u64),
 		.timeout = msecs_to_jiffies(JOB_TIMEOUT_MS),
 		.timeout_wq = group->ptdev->reset.wq,
-		.name = "panthor-queue",
 		.dev = group->ptdev->base.dev,
 	};
 	struct drm_gpu_scheduler *drm_sched;
@@ -3397,6 +3402,15 @@ group_create_queue(struct panthor_group *group,
 	if (ret)
 		goto err_free_queue;
 
+	/* assign a unique name */
+	queue->name = kasprintf(GFP_KERNEL, "panthor-queue-%llu-%u-%u", drm_client_id, gid, qid);
+	if (!queue->name) {
+		ret = -ENOMEM;
+		goto err_free_queue;
+	}
+
+	sched_args.name = queue->name;
+
 	ret = drm_sched_init(&queue->scheduler, &sched_args);
 	if (ret)
 		goto err_free_queue;
@@ -3446,7 +3460,8 @@ static void add_group_kbo_sizes(struct panthor_device *ptdev,
 
 int panthor_group_create(struct panthor_file *pfile,
 			 const struct drm_panthor_group_create *group_args,
-			 const struct drm_panthor_queue_create *queue_args)
+			 const struct drm_panthor_queue_create *queue_args,
+			 u64 drm_client_id)
 {
 	struct panthor_device *ptdev = pfile->ptdev;
 	struct panthor_group_pool *gpool = pfile->groups;
@@ -3539,12 +3554,16 @@ int panthor_group_create(struct panthor_file *pfile,
 	memset(group->syncobjs->kmap, 0,
 	       group_args->queues.count * sizeof(struct panthor_syncobj_64b));
 
+	ret = xa_alloc(&gpool->xa, &gid, group, XA_LIMIT(1, MAX_GROUPS_PER_POOL), GFP_KERNEL);
+	if (ret)
+		goto err_put_group;
+
 	for (i = 0; i < group_args->queues.count; i++) {
-		group->queues[i] = group_create_queue(group, &queue_args[i]);
+		group->queues[i] = group_create_queue(group, &queue_args[i], drm_client_id, gid, i);
 		if (IS_ERR(group->queues[i])) {
 			ret = PTR_ERR(group->queues[i]);
 			group->queues[i] = NULL;
-			goto err_put_group;
+			goto err_erase_gid;
 		}
 
 		group->queue_count++;
@@ -3552,10 +3571,6 @@ int panthor_group_create(struct panthor_file *pfile,
 
 	group->idle_queues = GENMASK(group->queue_count - 1, 0);
 
-	ret = xa_alloc(&gpool->xa, &gid, group, XA_LIMIT(1, MAX_GROUPS_PER_POOL), GFP_KERNEL);
-	if (ret)
-		goto err_put_group;
-
 	mutex_lock(&sched->reset.lock);
 	if (atomic_read(&sched->reset.in_progress)) {
 		panthor_group_stop(group);
@@ -3574,6 +3589,9 @@ int panthor_group_create(struct panthor_file *pfile,
 
 	return gid;
 
+err_erase_gid:
+	xa_erase(&gpool->xa, gid);
+
 err_put_group:
 	group_put(group);
 	return ret;
diff --git a/drivers/gpu/drm/panthor/panthor_sched.h b/drivers/gpu/drm/panthor/panthor_sched.h
index 742b0b4ff3a3..f4a475aa34c0 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.h
+++ b/drivers/gpu/drm/panthor/panthor_sched.h
@@ -21,7 +21,8 @@ struct panthor_job;
 
 int panthor_group_create(struct panthor_file *pfile,
 			 const struct drm_panthor_group_create *group_args,
-			 const struct drm_panthor_queue_create *queue_args);
+			 const struct drm_panthor_queue_create *queue_args,
+			 u64 drm_client_id);
 int panthor_group_destroy(struct panthor_file *pfile, u32 group_handle);
 int panthor_group_get_state(struct panthor_file *pfile,
 			    struct drm_panthor_group_get_state *get_state);