linux-kernel - Re: [PATCH v6 3/9] v4l: platform: Add Renesas CEU driver

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Message-ID: <e9623e9c-6444-2531-62c0-feed622c6e3b@xs4all.nl>
Date:   Sun, 21 Jan 2018 11:23:12 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     jacopo mondi <jacopo@...ndi.org>
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        laurent.pinchart@...asonboard.com, magnus.damm@...il.com,
        geert@...der.be, mchehab@...nel.org, festevam@...il.com,
        sakari.ailus@....fi, robh+dt@...nel.org, mark.rutland@....com,
        pombredanne@...b.com, linux-renesas-soc@...r.kernel.org,
        linux-media@...r.kernel.org, linux-sh@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 3/9] v4l: platform: Add Renesas CEU driver

On 21/01/18 11:21, Hans Verkuil wrote:
> On 21/01/18 10:53, jacopo mondi wrote:
>> Hi Hans,
>>
>> On Fri, Jan 19, 2018 at 12:20:19PM +0100, Hans Verkuil wrote:
>>> static int ov7670_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
>>> {
>>>         struct v4l2_captureparm *cp = &parms->parm.capture;
>>>         struct ov7670_info *info = to_state(sd);
>>>
>>>         if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
>>>                 return -EINVAL;
>>>
>>> And parms->type is CAPTURE_MPLANE. Just drop this test from the ov7670 driver
>>> in the g/s_parm functions. It shouldn't test for that since a subdev driver
>>> knows nothing about buffer types.
>>>
>>
>> I will drop that test in an additional patch part of next iteration of this series,
> 
> Replace g/s_parm by g/s_frame_interval. Consider g/s_parm for subdev drivers as
> deprecated (I'm working on a patch series to replace all g/s_parm uses by
> g/s_frame_interval).

Take a look here:

https://git.linuxtv.org/hverkuil/media_tree.git/log/?h=parm

You probably want to use the patch 'v4l2-common: add g/s_parm helper functions'
for the new ceu driver in your patch series. Feel free to add it.

Regards,

	Hans