linux-kernel - Re: [PATCH v2 18/34] media: iris: introduce and implement iris vb2 mem ops

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Date: Tue, 19 Dec 2023 12:58:09 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 stanimir.k.varbanov@...il.com, quic_vgarodia@...cinc.com, agross@...nel.org,
 andersson@...nel.org, mchehab@...nel.org, bryan.odonoghue@...aro.org
Cc: linux-arm-msm@...r.kernel.org, quic_abhinavk@...cinc.com
Subject: Re: [PATCH v2 18/34] media: iris: introduce and implement iris vb2
 mem ops

On 18.12.2023 12:32, Dikshita Agarwal wrote:
> From: Vikash Garodia <quic_vgarodia@...cinc.com>
> 
> Implement the iris vb2 mem ops for buffer management for
> DMABUF streaming mode. Update video driver buffer
> with dma buf information.
> 
> Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> ---
[...]

> +
> +void *iris_vb2_alloc(struct vb2_buffer *vb, struct device *dev,
> +		     unsigned long size)
> +{
> +	return (void *)0xdeadbeef;
> +}
> +
> +void iris_vb2_put(void *buf_priv)
> +{
> +}
> +
> +int iris_vb2_mmap(void *buf_priv, struct vm_area_struct *vma)
> +{
> +	return 0;
> +}
Are you sure these are enough for this driver to function?

Konrad