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Date:   Tue, 27 Nov 2018 10:03:44 +0100
From:   Maxime Ripard <maxime.ripard@bootlin.com>
To:     Brian Starkey <Brian.Starkey@arm.com>
Cc:     Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-sunxi@googlegroups.com" <linux-sunxi@googlegroups.com>,
        David Airlie <airlied@linux.ie>, Chen-Yu Tsai <wens@csie.org>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Sean Paul <sean@poorly.run>, nd <nd@arm.com>
Subject: Re: [PATCH v2 31/43] drm/sun4i: Add a dedicated ioctl call for
 allocating tiled buffers
Message-ID: <20181127090344.qlrksisbbmcjm3ac@flea>
References: <20181123092515.2511-1-paul.kocialkowski@bootlin.com>
 <20181123092515.2511-32-paul.kocialkowski@bootlin.com>
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On Fri, Nov 23, 2018 at 11:30:20AM +0000, Brian Starkey wrote:
> Hi Paul,
>=20
> On Fri, Nov 23, 2018 at 10:25:03AM +0100, Paul Kocialkowski wrote:
> >This introduces a dedicated ioctl for allocating buffers for the VPU
> >tiling mode. It allows setting up buffers that comply to the hardware
> >alignment requirements, by aligning the stride and height to 32 bytes.
> >
> >Only YUV semiplanar and planar formats are allowed by the ioctl, as the
> >hardware does not support the tiling mode for other formats.
>=20
> What's the general feeling about a more generic version of this ioctl?
> There doesn't seem to be anything Allwinner-specific in the ioctl
> arguments.

I'm definitely in favor of having such an ioctl.

maxime

--=20
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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