Re: [PATCH v2 3/4] media: chips-media: wave5: Fix hang after seeking

[Nicolas Dufresne <nicolas.dufresne@collabora.com>]

Le mardi 17 décembre 2024 à 13:51 +0900, Jackson.lee a écrit :
> While seeking, driver calls flush command. Before flush command is sent to
> VPU, driver should handle display buffer flags and should get all decoded
> information from VPU if VCORE is running.
> 
> Signed-off-by: Jackson.lee <jackson.lee@chipsnmedia.com>
> Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>

This one too please.

> ---
>  .../platform/chips-media/wave5/wave5-vpu-dec.c  | 17 ++++++++++++++++-
>  .../platform/chips-media/wave5/wave5-vpuapi.c   | 10 ++++++++++
>  2 files changed, 26 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> index d3ff420c52ce..882d5539630f 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> @@ -1369,6 +1369,16 @@ static int streamoff_output(struct vb2_queue *q)
>  	struct vb2_v4l2_buffer *buf;
>  	int ret;
>  	dma_addr_t new_rd_ptr;
> +	struct dec_output_info dec_info;
> +	unsigned int i;
> +
> +	for (i = 0; i < v4l2_m2m_num_dst_bufs_ready(m2m_ctx); i++) {
> +		ret = wave5_vpu_dec_set_disp_flag(inst, i);
> +		if (ret)
> +			dev_dbg(inst->dev->dev,
> +				"%s: Setting display flag of buf index: %u, fail: %d\n",
> +				__func__, i, ret);
> +	}
>  
>  	while ((buf = v4l2_m2m_src_buf_remove(m2m_ctx))) {
>  		dev_dbg(inst->dev->dev, "%s: (Multiplanar) buf type %4u | index %4u\n",
> @@ -1376,6 +1386,11 @@ static int streamoff_output(struct vb2_queue *q)
>  		v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
>  	}
>  
> +	while (wave5_vpu_dec_get_output_info(inst, &dec_info) == 0) {
> +		if (dec_info.index_frame_display >= 0)
> +			wave5_vpu_dec_set_disp_flag(inst, dec_info.index_frame_display);
> +	}
> +
>  	ret = wave5_vpu_flush_instance(inst);
>  	if (ret)
>  		return ret;
> @@ -1459,7 +1474,7 @@ static void wave5_vpu_dec_stop_streaming(struct vb2_queue *q)
>  			break;
>  
>  		if (wave5_vpu_dec_get_output_info(inst, &dec_output_info))
> -			dev_dbg(inst->dev->dev, "Getting decoding results from fw, fail\n");
> +			dev_dbg(inst->dev->dev, "there is no output info\n");
>  	}
>  
>  	v4l2_m2m_update_stop_streaming_state(m2m_ctx, q);
> diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> index e16b990041c2..e5e879a13e8b 100644
> --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
> @@ -75,6 +75,16 @@ int wave5_vpu_flush_instance(struct vpu_instance *inst)
>  				 inst->type == VPU_INST_TYPE_DEC ? "DECODER" : "ENCODER", inst->id);
>  			mutex_unlock(&inst->dev->hw_lock);
>  			return -ETIMEDOUT;
> +		} else if (ret == -EBUSY) {
> +			struct dec_output_info dec_info;
> +
> +			mutex_unlock(&inst->dev->hw_lock);
> +			wave5_vpu_dec_get_output_info(inst, &dec_info);
> +			ret = mutex_lock_interruptible(&inst->dev->hw_lock);
> +			if (ret)
> +				return ret;
> +			if (dec_info.index_frame_display > 0)
> +				wave5_vpu_dec_set_disp_flag(inst, dec_info.index_frame_display);
>  		}
>  	} while (ret != 0);
>  	mutex_unlock(&inst->dev->hw_lock);