linux-kernel - Re: [PATCH v3] drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT

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Message-ID: <e62bab71-34c5-c106-a6bb-aafd05c3a203@collabora.com>
Date:   Fri, 19 May 2017 16:40:46 -0400
From:   Robert Foss <robert.foss@...labora.com>
To:     Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc:     liviu.dudau@....com, brian.starkey@....com, malidp@...s.arm.com,
        airlied@...ux.ie, linux@...linux.org.uk,
        boris.brezillon@...e-electrons.com, daniel.vetter@...el.com,
        jani.nikula@...ux.intel.com, seanpaul@...omium.org,
        p.zabel@...gutronix.de, robdclark@...il.com, bskeggs@...hat.com,
        tomi.valkeinen@...com, linux-graphics-maintainer@...are.com,
        syeh@...are.com, thellstrom@...are.com, architt@...eaurora.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Emil Velikov <emil.l.velikov@...il.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Kristian Høgsberg <hoegsberg@...il.com>
Subject: Re: [PATCH v3] drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to
 UAPI



On 2017-05-18 05:49 AM, Ville Syrjälä wrote:
> On Wed, May 17, 2017 at 09:39:11PM -0400, Robert Foss wrote:
>> +/*
>> + * DRM_MODE_REFLECT_<axis>
>> + *
>> + * Signals that the contents of a drm plane has been reflected in
>> + * the <axis> axis.
> 
> Still vague.

Ack, I'll add some verbiage.

> 
> Also you didn't respond to my comment about the use of past tense.

Fixed in v4.


Rob.

> 
>> + *
>> + * This define is provided as a convenience, looking up the property id
>> + * using the name->prop id lookup is the preferred method.
>> + */
>> +#define DRM_MODE_REFLECT_X      (1<<4)
>> +#define DRM_MODE_REFLECT_Y      (1<<5)
>> +
>> +/*
>> + * DRM_MODE_REFLECT_MASK
>> + *
>> + * Bitmask used to look for drm plane reflections.
>> + */
>> +#define DRM_MODE_REFLECT_MASK (\
>> +		DRM_MODE_REFLECT_X | \
>> +		DRM_MODE_REFLECT_Y)
>> +
>> +
>>   struct drm_mode_modeinfo {
>>   	__u32 clock;
>>   	__u16 hdisplay;
>> -- 
>> 2.11.0.453.g787f75f05
>