From: Dikshita Agarwal Date: Mon, 25 Aug 2025 07:00:28 +0000 (+0530) Subject: media: iris: Fix port streaming handling X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4b67ef9b333ed645879b4b1a11e35e019ff4cfea;p=thirdparty%2Fkernel%2Fstable.git media: iris: Fix port streaming handling The previous check to block capture port streaming before output port was incorrect and caused some valid usecase to fail. While removing that check allows capture port to enter streaming independently, it also introduced firmware errors due to premature queuing of DPB buffers before the firmware session was fully started which happens only when streamon is called on output port. Fix this by deferring DPB buffer queuing to the firmware until both capture and output are streaming and state is 'STREAMING'. Fixes: 11712ce70f8e ("media: iris: implement vb2 streaming ops") Cc: stable@vger.kernel.org Reviewed-by: Vikash Garodia Tested-by: Vikash Garodia # X1E80100 Reviewed-by: Bryan O'Donoghue Tested-by: Neil Armstrong # on SM8550-HDK Tested-by: Neil Armstrong # on SM8650-HDK Signed-off-by: Dikshita Agarwal Tested-by: Bryan O'Donoghue # x1e80100-crd Signed-off-by: Bryan O'Donoghue Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/platform/qcom/iris/iris_buffer.c b/drivers/media/platform/qcom/iris/iris_buffer.c index 9f664c241149..23cac5d13129 100644 --- a/drivers/media/platform/qcom/iris/iris_buffer.c +++ b/drivers/media/platform/qcom/iris/iris_buffer.c @@ -334,6 +334,29 @@ int iris_queue_buffer(struct iris_inst *inst, struct iris_buffer *buf) return 0; } +int iris_queue_internal_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buffer_type) +{ + struct iris_buffer *buffer, *next; + struct iris_buffers *buffers; + int ret = 0; + + buffers = &inst->buffers[buffer_type]; + list_for_each_entry_safe(buffer, next, &buffers->list, list) { + if (buffer->attr & BUF_ATTR_PENDING_RELEASE) + continue; + if (buffer->attr & BUF_ATTR_QUEUED) + continue; + + if (buffer->attr & BUF_ATTR_DEFERRED) { + ret = iris_queue_buffer(inst, buffer); + if (ret) + return ret; + } + } + + return ret; +} + int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane) { const struct iris_platform_data *platform_data = inst->core->iris_platform_data; @@ -358,6 +381,10 @@ int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane) continue; if (buffer->attr & BUF_ATTR_QUEUED) continue; + if (buffer->type == BUF_DPB && inst->state != IRIS_INST_STREAMING) { + buffer->attr |= BUF_ATTR_DEFERRED; + continue; + } ret = iris_queue_buffer(inst, buffer); if (ret) return ret; diff --git a/drivers/media/platform/qcom/iris/iris_buffer.h b/drivers/media/platform/qcom/iris/iris_buffer.h index 00825ad2dc3a..b9b011faa13a 100644 --- a/drivers/media/platform/qcom/iris/iris_buffer.h +++ b/drivers/media/platform/qcom/iris/iris_buffer.h @@ -105,6 +105,7 @@ int iris_get_buffer_size(struct iris_inst *inst, enum iris_buffer_type buffer_ty void iris_get_internal_buffers(struct iris_inst *inst, u32 plane); int iris_create_internal_buffers(struct iris_inst *inst, u32 plane); int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane); +int iris_queue_internal_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buffer_type); int iris_destroy_internal_buffer(struct iris_inst *inst, struct iris_buffer *buffer); int iris_destroy_all_internal_buffers(struct iris_inst *inst, u32 plane); int iris_destroy_dequeued_internal_buffers(struct iris_inst *inst, u32 plane); diff --git a/drivers/media/platform/qcom/iris/iris_vb2.c b/drivers/media/platform/qcom/iris/iris_vb2.c index 8b17c7c39487..e62ed7a57df2 100644 --- a/drivers/media/platform/qcom/iris/iris_vb2.c +++ b/drivers/media/platform/qcom/iris/iris_vb2.c @@ -173,9 +173,6 @@ int iris_vb2_start_streaming(struct vb2_queue *q, unsigned int count) inst = vb2_get_drv_priv(q); - if (V4L2_TYPE_IS_CAPTURE(q->type) && inst->state == IRIS_INST_INIT) - return 0; - mutex_lock(&inst->lock); if (inst->state == IRIS_INST_ERROR) { ret = -EBUSY; @@ -203,7 +200,10 @@ int iris_vb2_start_streaming(struct vb2_queue *q, unsigned int count) buf_type = iris_v4l2_type_to_driver(q->type); - ret = iris_queue_deferred_buffers(inst, buf_type); + if (inst->state == IRIS_INST_STREAMING) + ret = iris_queue_internal_deferred_buffers(inst, BUF_DPB); + if (!ret) + ret = iris_queue_deferred_buffers(inst, buf_type); if (ret) goto error;