linux-kernel - Re: [PATCH v2 4/9] media: uapi: Add a control for HANTRO driver

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Message-ID: <3ec0c7ba-7492-02d1-8beb-fe692ba7d265@collabora.com>
Date:   Fri, 19 Feb 2021 16:34:52 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     Jernej Škrabec <jernej.skrabec@...l.net>,
        ezequiel@...labora.com, p.zabel@...gutronix.de, mchehab@...nel.org,
        robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org, peng.fan@....com,
        hverkuil-cisco@...all.nl, dan.carpenter@...cle.com
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH v2 4/9] media: uapi: Add a control for HANTRO driver


Le 18/02/2021 à 22:34, Jernej Škrabec a écrit :
> Hi!
>
> Dne četrtek, 18. februar 2021 ob 20:18:39 CET je Benjamin Gaignard napisal(a):
>> The HEVC HANTRO driver needs to know the number of bits to skip at
>> the beginning of the slice header.
>> That is a hardware specific requirement so create a dedicated control
>> that this purpose.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
>> ---
>>   include/uapi/linux/hantro-v4l2-controls.h | 20 ++++++++++++++++++++
>>   include/uapi/linux/v4l2-controls.h        |  5 +++++
>>   2 files changed, 25 insertions(+)
>>   create mode 100644 include/uapi/linux/hantro-v4l2-controls.h
>>
>> diff --git a/include/uapi/linux/hantro-v4l2-controls.h b/include/uapi/linux/
> hantro-v4l2-controls.h
>> new file mode 100644
>> index 000000000000..30b1999b7af3
>> --- /dev/null
>> +++ b/include/uapi/linux/hantro-v4l2-controls.h
>> @@ -0,0 +1,20 @@
>> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
>> +
>> +#ifndef __UAPI_HANTRO_V4L2_CONYTROLS_H__
>> +#define __UAPI_HANTRO_V4L2_CONYTROLS_H__
>> +
>> +#include <linux/v4l2-controls.h>
>> +#include <media/hevc-ctrls.h>
>> +
>> +#define V4L2_CID_HANTRO_HEVC_EXTRA_DECODE_PARAMS	
> (V4L2_CID_USER_HANTRO_BASE + 0)
>> +
>> +/**
>> + * struct hantro_hevc_extra_decode_params - extra decode parameters for
> hantro driver
>> + * @hevc_hdr_skip_lenght:	header first bits offset
>> + */
>> +struct hantro_hevc_extra_decode_params {
>> +	__u32	hevc_hdr_skip_lenght;
> typo: lenght -> length
>
> Same mistake in description above.

Thanks I will fix that in v3

Benjamin

>
> Best regards,
> Jernej
>
>> +	__u8	padding[4];
>> +};
>> +
>> +#endif
>> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-
> controls.h
>> index 039c0d7add1b..ced7486c7f46 100644
>> --- a/include/uapi/linux/v4l2-controls.h
>> +++ b/include/uapi/linux/v4l2-controls.h
>> @@ -209,6 +209,11 @@ enum v4l2_colorfx {
>>    * We reserve 128 controls for this driver.
>>    */
>>   #define V4L2_CID_USER_CCS_BASE			(V4L2_CID_USER_BASE +
> 0x10f0)
>> +/*
>> + * The base for HANTRO driver controls.
>> + * We reserve 32 controls for this driver.
>> + */
>> +#define V4L2_CID_USER_HANTRO_BASE		(V4L2_CID_USER_BASE +
> 0x1170)
>>   
>>   /* MPEG-class control IDs */
>>   /* The MPEG controls are applicable to all codec controls
>> -- 
>> 2.25.1
>>
>>
>
>