From: Dikshita Agarwal <[email protected]>

Add handling for below commands in encoder:
1. V4L2_ENC_CMD_STOP
2. V4L2_ENC_CMD_START

Signed-off-by: Dikshita Agarwal <[email protected]>
Signed-off-by: Stanimir Varbanov <[email protected]>
---
 drivers/media/platform/qcom/venus/venc.c | 77 +++++++++++++++++++++++-
 1 file changed, 76 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/venc.c 
b/drivers/media/platform/qcom/venus/venc.c
index 99bfabf90bd2..7512e4a16270 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -507,6 +507,59 @@ static int venc_enum_frameintervals(struct file *file, 
void *fh,
        return 0;
 }
 
+static int venc_encoder_cmd(struct file *file, void *fh,
+                           struct v4l2_encoder_cmd *ec)
+{
+       struct venus_inst *inst = to_inst(file);
+       struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+       struct hfi_frame_data fdata = {0};
+       int ret = 0;
+
+       ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
+       if (ret < 0)
+               return ret;
+
+       mutex_lock(&inst->lock);
+
+       if (!vb2_is_streaming(&m2m_ctx->cap_q_ctx.q) ||
+           !vb2_is_streaming(&m2m_ctx->out_q_ctx.q))
+               goto unlock;
+
+       if (m2m_ctx->is_draining) {
+               ret = -EBUSY;
+               goto unlock;
+       }
+
+       if (ec->cmd == V4L2_ENC_CMD_STOP) {
+               if (v4l2_m2m_has_stopped(m2m_ctx)) {
+                       ret = 0;
+                       goto unlock;
+               }
+
+               m2m_ctx->is_draining = true;
+
+               fdata.buffer_type = HFI_BUFFER_INPUT;
+               fdata.flags |= HFI_BUFFERFLAG_EOS;
+               fdata.device_addr = 0;
+               fdata.clnt_data = (u32)-1;
+
+               ret = hfi_session_process_buf(inst, &fdata);
+               if (ret)
+                       goto unlock;
+       }
+
+       if (ec->cmd == V4L2_ENC_CMD_START && v4l2_m2m_has_stopped(m2m_ctx)) {
+               vb2_clear_last_buffer_dequeued(&m2m_ctx->cap_q_ctx.q);
+               inst->m2m_ctx->has_stopped = false;
+               venus_helper_process_initial_out_bufs(inst);
+               venus_helper_process_initial_cap_bufs(inst);
+       }
+
+unlock:
+       mutex_unlock(&inst->lock);
+       return ret;
+}
+
 static const struct v4l2_ioctl_ops venc_ioctl_ops = {
        .vidioc_querycap = venc_querycap,
        .vidioc_enum_fmt_vid_cap = venc_enum_fmt,
@@ -534,6 +587,8 @@ static const struct v4l2_ioctl_ops venc_ioctl_ops = {
        .vidioc_enum_frameintervals = venc_enum_frameintervals,
        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+       .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
+       .vidioc_encoder_cmd = venc_encoder_cmd,
 };
 
 static int venc_set_properties(struct venus_inst *inst)
@@ -946,9 +1001,22 @@ static int venc_start_streaming(struct vb2_queue *q, 
unsigned int count)
 static void venc_vb2_buf_queue(struct vb2_buffer *vb)
 {
        struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+       struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+       struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
 
        mutex_lock(&inst->lock);
-       venus_helper_vb2_buf_queue(vb);
+
+       v4l2_m2m_buf_queue(m2m_ctx, vbuf);
+
+       if (!(inst->streamon_out && inst->streamon_cap))
+               goto unlock;
+
+       if (v4l2_m2m_has_stopped(m2m_ctx))
+               goto unlock;
+
+       venus_helper_process_buf(vb);
+
+unlock:
        mutex_unlock(&inst->lock);
 }
 
@@ -968,6 +1036,7 @@ static void venc_buf_done(struct venus_inst *inst, 
unsigned int buf_type,
        struct vb2_v4l2_buffer *vbuf;
        struct vb2_buffer *vb;
        unsigned int type;
+       struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
 
        if (buf_type == HFI_BUFFER_INPUT)
                type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
@@ -986,6 +1055,12 @@ static void venc_buf_done(struct venus_inst *inst, 
unsigned int buf_type,
                vb->planes[0].data_offset = data_offset;
                vb->timestamp = timestamp_us * NSEC_PER_USEC;
                vbuf->sequence = inst->sequence_cap++;
+
+               if ((!bytesused && m2m_ctx->is_draining) ||
+                   (vbuf->flags & V4L2_BUF_FLAG_LAST)) {
+                       vbuf->flags |= V4L2_BUF_FLAG_LAST;
+                       v4l2_m2m_mark_stopped(inst->m2m_ctx);
+               }
        } else {
                vbuf->sequence = inst->sequence_out++;
        }
-- 
2.17.1

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