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

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Message-ID:
 <SE1P216MB130351C7E0B35C4A51F0C23FED052@SE1P216MB1303.KORP216.PROD.OUTLOOK.COM>
Date: Wed, 18 Dec 2024 03:06:18 +0000
From: jackson.lee <jackson.lee@...psnmedia.com>
To: Nicolas Dufresne <nicolas.dufresne@...labora.com>, "mchehab@...nel.org"
	<mchehab@...nel.org>, "hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>,
	"sebastian.fricke@...labora.com" <sebastian.fricke@...labora.com>,
	"bob.beckett@...labora.com" <bob.beckett@...labora.com>,
	"dafna.hirschfeld@...labora.com" <dafna.hirschfeld@...labora.com>
CC: "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, lafley.kim
	<lafley.kim@...psnmedia.com>, "b-brnich@...com" <b-brnich@...com>,
	"hverkuil@...all.nl" <hverkuil@...all.nl>, Nas Chung
	<nas.chung@...psnmedia.com>
Subject: RE: [PATCH v2 3/4] media: chips-media: wave5: Fix hang after seeking

Hi Nicolas


> -----Original Message-----
> From: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> Sent: Tuesday, December 17, 2024 11:05 PM
> To: jackson.lee <jackson.lee@...psnmedia.com>; mchehab@...nel.org;
> hverkuil-cisco@...all.nl; sebastian.fricke@...labora.com;
> bob.beckett@...labora.com; dafna.hirschfeld@...labora.com
> Cc: linux-media@...r.kernel.org; linux-kernel@...r.kernel.org; lafley.kim
> <lafley.kim@...psnmedia.com>; b-brnich@...com; hverkuil@...all.nl; Nas
> Chung <nas.chung@...psnmedia.com>
> Subject: Re: [PATCH v2 3/4] media: chips-media: wave5: Fix hang after
> seeking
> 
> 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@...psnmedia.com>
> > Signed-off-by: Nas Chung <nas.chung@...psnmedia.com>
> > Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> 
> This one too please.


Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")

thanks


> 
> > ---
> >  .../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);