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Message-ID: <20250704-iris-video-encoder-v1-25-b6ce24e273cf@quicinc.com>
Date: Fri, 4 Jul 2025 13:23:25 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: Vikash Garodia <quic_vgarodia@...cinc.com>,
Abhinav Kumar
<abhinav.kumar@...ux.dev>,
Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil
<hverkuil@...all.nl>,
Stefan Schmidt <stefan.schmidt@...aro.org>,
"Vedang
Nagar" <quic_vnagar@...cinc.com>
CC: <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
Dikshita Agarwal <quic_dikshita@...cinc.com>
Subject: [PATCH 25/25] media: iris: Add support for drain sequence in
encoder video device
Add support for handling start and stop commands, including the
end-of-stream (drain) sequence, in the encoder video device.
This enables proper signaling to the firmware and ensures that all
pending frames are processed and flushed before completing the stream.
Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
---
.../platform/qcom/iris/iris_hfi_gen1_command.c | 30 ++++++++---
.../platform/qcom/iris/iris_hfi_gen1_response.c | 5 ++
drivers/media/platform/qcom/iris/iris_venc.c | 58 ++++++++++++++++++++++
drivers/media/platform/qcom/iris/iris_venc.h | 2 +
drivers/media/platform/qcom/iris/iris_vidc.c | 35 +++++++++++++
5 files changed, 123 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
index 65648076131f5312950322216ee250474063b4bc..fff5631423330d22ead4891654fcc38d8b55e0f5 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_command.c
@@ -455,15 +455,31 @@ static int iris_hfi_gen1_session_unset_buffers(struct iris_inst *inst, struct ir
static int iris_hfi_gen1_session_drain(struct iris_inst *inst, u32 plane)
{
- struct hfi_session_empty_buffer_compressed_pkt ip_pkt = {0};
+ if (inst->domain == DECODER) {
+ struct hfi_session_empty_buffer_compressed_pkt ip_pkt = {0};
+
+ ip_pkt.shdr.hdr.size = sizeof(struct hfi_session_empty_buffer_compressed_pkt);
+ ip_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_EMPTY_BUFFER;
+ ip_pkt.shdr.session_id = inst->session_id;
+ ip_pkt.flags = HFI_BUFFERFLAG_EOS;
+ ip_pkt.packet_buffer = 0xdeadb000;
+
+ return iris_hfi_queue_cmd_write(inst->core, &ip_pkt, ip_pkt.shdr.hdr.size);
+ }
- ip_pkt.shdr.hdr.size = sizeof(struct hfi_session_empty_buffer_compressed_pkt);
- ip_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_EMPTY_BUFFER;
- ip_pkt.shdr.session_id = inst->session_id;
- ip_pkt.flags = HFI_BUFFERFLAG_EOS;
- ip_pkt.packet_buffer = 0xdeadb000;
+ if (inst->domain == ENCODER) {
+ struct hfi_session_empty_buffer_uncompressed_pkt ip_pkt = {0};
+
+ ip_pkt.shdr.hdr.size = sizeof(struct hfi_session_empty_buffer_uncompressed_pkt);
+ ip_pkt.shdr.hdr.pkt_type = HFI_CMD_SESSION_EMPTY_BUFFER;
+ ip_pkt.shdr.session_id = inst->session_id;
+ ip_pkt.flags = HFI_BUFFERFLAG_EOS;
+ ip_pkt.packet_buffer = 0xdeadb000;
+
+ return iris_hfi_queue_cmd_write(inst->core, &ip_pkt, ip_pkt.shdr.hdr.size);
+ }
- return iris_hfi_queue_cmd_write(inst->core, &ip_pkt, ip_pkt.shdr.hdr.size);
+ return -EINVAL;
}
static int
diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c b/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
index 6b55f8d15e1097de2fb919b30695ac41f7270adf..c4750d60cb93dab9be8a02edf47305d6a046a6ac 100644
--- a/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
+++ b/drivers/media/platform/qcom/iris/iris_hfi_gen1_response.c
@@ -487,6 +487,11 @@ static void iris_hfi_gen1_session_ftb_done(struct iris_inst *inst, void *packet)
flags |= V4L2_BUF_FLAG_LAST;
inst->last_buffer_dequeued = true;
}
+ } else if (inst->domain == ENCODER) {
+ if (!inst->last_buffer_dequeued && iris_drain_pending(inst)) {
+ flags |= V4L2_BUF_FLAG_LAST;
+ inst->last_buffer_dequeued = true;
+ }
}
}
buf->timestamp = timestamp_us;
diff --git a/drivers/media/platform/qcom/iris/iris_venc.c b/drivers/media/platform/qcom/iris/iris_venc.c
index 1dc79e8fbab8d69d95ebe519d736f5f2f65b2886..719baa3f82f01fdc10f0eb6c2460186b141ae1e9 100644
--- a/drivers/media/platform/qcom/iris/iris_venc.c
+++ b/drivers/media/platform/qcom/iris/iris_venc.c
@@ -519,3 +519,61 @@ int iris_venc_qbuf(struct iris_inst *inst, struct vb2_v4l2_buffer *vbuf)
return iris_queue_buffer(inst, buf);
}
+
+int iris_venc_start_cmd(struct iris_inst *inst)
+{
+ const struct iris_hfi_command_ops *hfi_ops = inst->core->hfi_ops;
+ enum iris_inst_sub_state clear_sub_state = 0;
+ struct vb2_queue *dst_vq;
+ int ret;
+
+ dst_vq = v4l2_m2m_get_dst_vq(inst->m2m_ctx);
+
+ if (inst->sub_state & IRIS_INST_SUB_DRAIN &&
+ inst->sub_state & IRIS_INST_SUB_DRAIN_LAST) {
+ vb2_clear_last_buffer_dequeued(dst_vq);
+ clear_sub_state = IRIS_INST_SUB_DRAIN | IRIS_INST_SUB_DRAIN_LAST;
+ if (inst->sub_state & IRIS_INST_SUB_INPUT_PAUSE) {
+ if (hfi_ops->session_resume_drain) {
+ ret = hfi_ops->session_resume_drain(inst,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+ if (ret)
+ return ret;
+ }
+ clear_sub_state |= IRIS_INST_SUB_INPUT_PAUSE;
+ }
+ if (inst->sub_state & IRIS_INST_SUB_OUTPUT_PAUSE) {
+ if (hfi_ops->session_resume_drain) {
+ ret = hfi_ops->session_resume_drain(inst,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+ if (ret)
+ return ret;
+ }
+ clear_sub_state |= IRIS_INST_SUB_OUTPUT_PAUSE;
+ }
+ } else {
+ dev_err(inst->core->dev, "start called before receiving last_flag\n");
+ iris_inst_change_state(inst, IRIS_INST_ERROR);
+ return -EBUSY;
+ }
+
+ inst->last_buffer_dequeued = false;
+
+ return iris_inst_change_sub_state(inst, clear_sub_state, 0);
+}
+
+int iris_venc_stop_cmd(struct iris_inst *inst)
+{
+ const struct iris_hfi_command_ops *hfi_ops = inst->core->hfi_ops;
+ int ret;
+
+ ret = hfi_ops->session_drain(inst, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+ if (ret)
+ return ret;
+
+ ret = iris_inst_change_sub_state(inst, 0, IRIS_INST_SUB_DRAIN);
+
+ iris_scale_power(inst);
+
+ return ret;
+}
diff --git a/drivers/media/platform/qcom/iris/iris_venc.h b/drivers/media/platform/qcom/iris/iris_venc.h
index bbf3b635288dd6cc39719bdde1942918357791aa..c4db7433da537578e05d566d53d89a22e1901678 100644
--- a/drivers/media/platform/qcom/iris/iris_venc.h
+++ b/drivers/media/platform/qcom/iris/iris_venc.h
@@ -21,5 +21,7 @@ int iris_venc_s_param(struct iris_inst *inst, struct v4l2_streamparm *s_parm);
int iris_venc_streamon_input(struct iris_inst *inst);
int iris_venc_streamon_output(struct iris_inst *inst);
int iris_venc_qbuf(struct iris_inst *inst, struct vb2_v4l2_buffer *vbuf);
+int iris_venc_start_cmd(struct iris_inst *inst);
+int iris_venc_stop_cmd(struct iris_inst *inst);
#endif
diff --git a/drivers/media/platform/qcom/iris/iris_vidc.c b/drivers/media/platform/qcom/iris/iris_vidc.c
index ddf4443aba62a8799188c2046f8dadfbb3e0cdbd..01338c7f3125d982360ed8168f95ab572c9e5897 100644
--- a/drivers/media/platform/qcom/iris/iris_vidc.c
+++ b/drivers/media/platform/qcom/iris/iris_vidc.c
@@ -598,6 +598,39 @@ static int iris_dec_cmd(struct file *filp, void *fh,
return ret;
}
+static int iris_enc_cmd(struct file *filp, void *fh,
+ struct v4l2_encoder_cmd *enc)
+{
+ struct iris_inst *inst = iris_get_inst(filp, NULL);
+ int ret = 0;
+
+ mutex_lock(&inst->lock);
+
+ ret = v4l2_m2m_ioctl_encoder_cmd(filp, fh, enc);
+ if (ret)
+ goto unlock;
+
+ if (inst->state == IRIS_INST_DEINIT)
+ goto unlock;
+
+ if (!iris_allow_cmd(inst, enc->cmd)) {
+ ret = -EBUSY;
+ goto unlock;
+ }
+
+ if (enc->cmd == V4L2_ENC_CMD_START)
+ ret = iris_venc_start_cmd(inst);
+ else if (enc->cmd == V4L2_ENC_CMD_STOP)
+ ret = iris_venc_stop_cmd(inst);
+ else
+ ret = -EINVAL;
+
+unlock:
+ mutex_unlock(&inst->lock);
+
+ return ret;
+}
+
static struct v4l2_file_operations iris_v4l2_file_ops = {
.owner = THIS_MODULE,
.open = iris_open,
@@ -673,6 +706,8 @@ static const struct v4l2_ioctl_ops iris_v4l2_ioctl_ops_enc = {
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_remove_bufs = v4l2_m2m_ioctl_remove_bufs,
+ .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
+ .vidioc_encoder_cmd = iris_enc_cmd,
};
void iris_init_ops(struct iris_core *core)
--
2.34.1
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