media: amphion: reinit vpu if reqbufs output 0

according to v4l2 stateful decoder document 4.5.1.3. State Machine,
the state should change from seek to initialization
if call VIDIOC_REQBUFS(OUTPUT, 0).

so reinit the vpu decoder if reqbufs output 0

Fixes: 6de8d628df6e ("media: amphion: add v4l2 m2m vpu decoder stateful driver")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c
index 6515f3c..56c4dee 100644 (file)
--- a/drivers/media/platform/amphion/vdec.c
+++ b/drivers/media/platform/amphion/vdec.c
@@ -1453,9 +1453,7 @@ static void vdec_release(struct vpu_inst *inst)
 {
        if (inst->id != VPU_INST_NULL_ID)
                vpu_trace(inst->dev, "[%d]\n", inst->id);
-       vpu_inst_lock(inst);
        vdec_stop(inst, true);
-       vpu_inst_unlock(inst);
 }
 
 static void vdec_cleanup(struct vpu_inst *inst)

diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 021235e..0f6e4c6 100644 (file)
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -489,6 +489,11 @@ static int vpu_vb2_queue_setup(struct vb2_queue *vq,
        for (i = 0; i < cur_fmt->mem_planes; i++)
                psize[i] = vpu_get_fmt_plane_size(cur_fmt, i);
 
+       if (V4L2_TYPE_IS_OUTPUT(vq->type) && inst->state == VPU_CODEC_STATE_SEEK) {
+               vpu_trace(inst->dev, "reinit when VIDIOC_REQBUFS(OUTPUT, 0)\n");
+               call_void_vop(inst, release);
+       }
+
        return 0;
 }
 
@@ -773,9 +778,9 @@ int vpu_v4l2_close(struct file *file)
                v4l2_m2m_ctx_release(inst->fh.m2m_ctx);
                inst->fh.m2m_ctx = NULL;
        }
+       call_void_vop(inst, release);
        vpu_inst_unlock(inst);
 
-       call_void_vop(inst, release);
        vpu_inst_unregister(inst);
        vpu_inst_put(inst);