linux-kernel - Re: [PATCH v9 1/4] media: videodev2.h, v4l2-ioctl: add rkisp1 meta buffer format

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Message-ID: <b1a8fa60a3c8922c364a18b0583dab55660f2fb4.camel@collabora.com>
Date:   Wed, 06 Nov 2019 10:44:43 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Helen Koike <helen.koike@...labora.com>,
        "Hans Verkuil (hansverk)" <hansverk@...co.com>,
        "linux-rockchip@...ts.infradead.org" 
        <linux-rockchip@...ts.infradead.org>
Cc:     "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "eddie.cai.linux@...il.com" <eddie.cai.linux@...il.com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "heiko@...ech.de" <heiko@...ech.de>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "jeffy.chen@...k-chips.com" <jeffy.chen@...k-chips.com>,
        "zyc@...k-chips.com" <zyc@...k-chips.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tfiga@...omium.org" <tfiga@...omium.org>,
        "hans.verkuil@...co.com" <hans.verkuil@...co.com>,
        "laurent.pinchart@...asonboard.com" 
        <laurent.pinchart@...asonboard.com>,
        "sakari.ailus@...ux.intel.com" <sakari.ailus@...ux.intel.com>,
        "kernel@...labora.com" <kernel@...labora.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "zhengsq@...k-chips.com" <zhengsq@...k-chips.com>,
        Jacob Chen <jacob2.chen@...k-chips.com>
Subject: Re: [PATCH v9 1/4] media: videodev2.h, v4l2-ioctl: add rkisp1 meta
 buffer format

Hi Hans, Helen:

On Wed, 2019-11-06 at 09:30 -0300, Helen Koike wrote:
> 
> On 11/6/19 10:22 AM, Hans Verkuil (hansverk) wrote:
> > On 11/6/19 1:01 PM, Helen Koike wrote:
> > > From: Shunqian Zheng <zhengsq@...k-chips.com>
> > > 
> > > Add the Rockchip ISP1 specific processing parameter format
> > > V4L2_META_FMT_RK_ISP1_PARAMS and metadata format
> > > V4L2_META_FMT_RK_ISP1_STAT_3A for 3A.
> > > 
> > > Signed-off-by: Shunqian Zheng <zhengsq@...k-chips.com>
> > > Signed-off-by: Jacob Chen <jacob2.chen@...k-chips.com>
> > > Acked-by: Hans Verkuil <hans.verkuil@...co.com>
> > 
> > I acked this? It is missing documentation for these new formats.
> 
> I think so https://www.spinics.net/lists/linux-rockchip/msg18999.html :)
> 
> I'll update the docs and the fixes you pointed below.
> 
> Thanks.
> Helen
> 
> > > [refactored for upstream]
> > > Signed-off-by: Helen Koike <helen.koike@...labora.com>
> > > Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > > 
> > > ---
> > > 
> > > Changes in v9:
> > > - Add reviewed-by tag from Laurent
> > > 
> > > Changes in v8: None
> > > Changes in v7:
> > > - s/IPU3/RK_ISP1
> > > 
> > >  drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++
> > >  include/uapi/linux/videodev2.h       | 4 ++++
> > >  2 files changed, 6 insertions(+)
> > > 
> > > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> > > index 315ac12c3e0a..ade990554caf 100644
> > > --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> > > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> > > @@ -1341,6 +1341,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
> > >  	case V4L2_META_FMT_UVC:		descr = "UVC Payload Header Metadata"; break;
> > >  	case V4L2_META_FMT_D4XX:	descr = "Intel D4xx UVC Metadata"; break;
> > >  	case V4L2_META_FMT_VIVID:       descr = "Vivid Metadata"; break;
> > > +	case V4L2_META_FMT_RK_ISP1_PARAMS:	descr = "Rockchip ISP1 3A params"; break;
> > 
> > params -> Params
> > 
> > > +	case V4L2_META_FMT_RK_ISP1_STAT_3A:	descr = "Rockchip ISP1 3A statistics"; break;
> > 
> > statistics -> Statistics
> > 
> > >  
> > >  	default:
> > >  		/* Compressed formats */
> > > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> > > index f98bbcced8ff..56798b09cd85 100644
> > > --- a/include/uapi/linux/videodev2.h
> > > +++ b/include/uapi/linux/videodev2.h

Can we avoid touching videodev2.h, as we did for the stateless codec pixfmts?

Thanks,
Ezequiel

> > > @@ -762,6 +762,10 @@ struct v4l2_pix_format {
> > >  #define V4L2_META_FMT_D4XX        v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
> > >  #define V4L2_META_FMT_VIVID	  v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */
> > >  
> > > +/* Vendor specific - used for RK_ISP1 camera sub-system */
> > > +#define V4L2_META_FMT_RK_ISP1_PARAMS	v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 params */
> > > +#define V4L2_META_FMT_RK_ISP1_STAT_3A	v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A statistics */
> > > +
> > >  /* priv field value to indicates that subsequent fields are valid. */
> > >  #define V4L2_PIX_FMT_PRIV_MAGIC		0xfeedcafe
> > >  
> > > 
> > 
> > Regards,
> > 
> > 	Hans
> >