linux-kernel - Re: [PATCH v4 1/1] drm/fb-helper: implement ioctl FBIO

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Date:   Wed, 1 Mar 2017 22:31:37 +0100
From:   Stefan Lengfeld <contact@...fanchrist.eu>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Sean Paul <seanpaul@...omium.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: Re: [PATCH v4 1/1] drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC

Hi Maxime,

On Tue, Feb 28, 2017 at 04:36:51PM +0100, Maxime Ripard wrote:
> Implement legacy framebuffer ioctl FBIO_WAITFORVSYNC in the generic
> framebuffer emulation driver. Legacy framebuffer users like non kms/drm
> based OpenGL(ES)/EGL implementations may require the ioctl to                  
> synchronize drawing or buffer flip for double buffering. It is tested on
> the i.MX6.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> Tested-by: Neil Armstrong <narmstrong@...libre.com>

I will test this patch and the already applied patch to drm-next on the
i.MX6 platform in the next days.

Kind regards,
    Stefan