Re: [PATCH 3/4] media: verisilicon: Hook the (TRY_)DECODER_CMD stateless ioctls

From: "Daniel Almeida" <daniel.almeida@collabora.com>
To: "Paul Kocialkowski" <paul.kocialkowski@bootlin.com>
Cc: linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev,
	"Ezequiel Garcia" <ezequiel@vanguardiasur.com.ar>,
	"Philipp Zabel" <p.zabel@pengutronix.de>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Hans Verkuil" <hverkuil-cisco@xs4all.nl>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Nicolas Dufresne" <nicolas.dufresne@collabora.com>,
	"Sebastian Fricke" <sebastian.fricke@collabora.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 3/4] media: verisilicon: Hook the (TRY_)DECODER_CMD  stateless ioctls
Date: Fri, 10 Nov 2023 21:07:46 +0000	[thread overview]
Message-ID: <530d-654e9b80-9-557cd880@203483206> (raw)
In-Reply-To: <20231109201640.340556-3-paul.kocialkowski@bootlin.com>

On Thursday, November 09, 2023 17:16 -03, Paul Kocialkowski <paul.kocialkowski@bootlin.com> wrote:

> The (TRY_)DECODER_CMD ioctls are used to support flushing when holding capture
> buffers is supported. This is the case of this driver but the ioctls were never
> hooked to the ioctl ops.
> 
> Add them to correctly support flushing.
> 
> Fixes: 340ce50f75a6 ("media: hantro: Enable HOLD_CAPTURE_BUF for H.264")
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> ---
>  drivers/media/platform/verisilicon/hantro_drv.c  | 2 ++
>  drivers/media/platform/verisilicon/hantro_v4l2.c | 3 +++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index a9fa05ac56a9..3a2a0f28cbfe 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -905,6 +905,8 @@ static int hantro_add_func(struct hantro_dev *vpu, unsigned int funcid)
>  
>  	if (funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER) {
>  		vpu->encoder = func;
> +		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
> +		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
>  	} else {
>  		vpu->decoder = func;
>  		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index b3ae037a50f6..db145519fc5d 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -785,6 +785,9 @@ const struct v4l2_ioctl_ops hantro_ioctl_ops = {
>  	.vidioc_g_selection = vidioc_g_selection,
>  	.vidioc_s_selection = vidioc_s_selection,
>  
> +	.vidioc_decoder_cmd = v4l2_m2m_ioctl_stateless_decoder_cmd,
> +	.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_stateless_try_decoder_cmd,
> +
>  	.vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
>  	.vidioc_encoder_cmd = vidioc_encoder_cmd,
>  };
> -- 
> 2.42.1
> 
> 
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Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>