linux-kernel - Re: [PATCH v5] drm/fb-helper: pass physical dimensions to fbdev

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Message-ID: <7916b6bd-cc6b-0696-4c78-5413389c600a@lechnology.com>
Date:   Mon, 7 Aug 2017 08:40:35 -0500
From:   David Lechner <david@...hnology.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Daniel Vetter <daniel.vetter@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Sean Paul <seanpaul@...omium.org>,
        David Airlie <airlied@...ux.ie>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] drm/fb-helper: pass physical dimensions to fbdev

On 08/04/2017 11:25 AM, David Lechner wrote:
> The fbdev subsystem has a place for physical dimensions (width and height
> in mm) that is readable by userspace. Since DRM also knows these
> dimensions, pass this information to the fbdev device.
> 
> This has to be done in drm_setup_crtcs_fb() instead of drm_setup_crtcs()
> because fb_helper->fbdev may be NULL in drm_setup_crtcs().

Signed-off-by: David Lechner <david@...hnology.com>