linux-kernel - Re: [PATCH v5 15/28] media: iris: implement query

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Message-ID: <39aa2f6f-200f-4578-bd4a-4599a8f9f7ec@xs4all.nl>
Date: Tue, 12 Nov 2024 11:24:51 +0100
From: Hans Verkuil <hverkuil@...all.nl>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Abhinav Kumar <quic_abhinavk@...cinc.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: Sebastian Fricke <sebastian.fricke@...labora.com>,
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Neil Armstrong <neil.armstrong@...aro.org>,
 Nicolas Dufresne <nicolas@...fresne.ca>,
 Uwe Kleine-König <u.kleine-koenig@...libre.com>,
 Jianhua Lu <lujianhua000@...il.com>, linux-media@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Vedang Nagar <quic_vnagar@...cinc.com>
Subject: Re: [PATCH v5 15/28] media: iris: implement query_cap ioctl

On 05/11/2024 07:55, Dikshita Agarwal wrote:
> From: Vedang Nagar <quic_vnagar@...cinc.com>
> 
> Implement query_cap ioctl with necessary hooks.
> 
> Signed-off-by: Vedang Nagar <quic_vnagar@...cinc.com>
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
>  drivers/media/platform/qcom/iris/iris_vidc.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_vidc.c b/drivers/media/platform/qcom/iris/iris_vidc.c
> index 820d98da3190..e270711b8f6b 100644
> --- a/drivers/media/platform/qcom/iris/iris_vidc.c
> +++ b/drivers/media/platform/qcom/iris/iris_vidc.c
> @@ -303,6 +303,14 @@ static int iris_enum_framesizes(struct file *filp, void *fh,
>  	return 0;
>  }
>  
> +static int iris_querycap(struct file *filp, void *fh, struct v4l2_capability *cap)
> +{
> +	strscpy(cap->driver, IRIS_DRV_NAME, sizeof(cap->driver));
> +	strscpy(cap->card, "iris_decoder", sizeof(cap->card));

The card field is supposed to be a human readable strings, so I
would suggest using "Iris Decoder" instead. Up to you, though.

Regards,

	Hans

> +
> +	return 0;
> +}
> +
>  static int iris_g_selection(struct file *filp, void *fh, struct v4l2_selection *s)
>  {
>  	struct iris_inst *inst = iris_get_inst(filp, NULL);
> @@ -361,6 +369,7 @@ static const struct v4l2_ioctl_ops iris_v4l2_ioctl_ops = {
>  	.vidioc_g_fmt_vid_out_mplane    = iris_g_fmt_vid_mplane,
>  	.vidioc_enum_framesizes         = iris_enum_framesizes,
>  	.vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
> +	.vidioc_querycap                = iris_querycap,
>  	.vidioc_g_selection             = iris_g_selection,
>  	.vidioc_subscribe_event         = iris_subscribe_event,
>  	.vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
>