linux-kernel - Re: [PATCH 5/5] drm/i915: Replace "Broadcast RGB" with "RGB quantization range" property

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Message-ID: <daCvJk4O6rHOwEometGSPENJupb6adPr583_dLEetvftUQPbK4198VDijHGzM9uTm9bP3TEyGCZvxKe5PSvqWBg5xhXkL_7EiAQlmEPKWQI=@emersion.fr>
Date:   Mon, 13 Apr 2020 22:35:24 +0000
From:   Simon Ser <contact@...rsion.fr>
To:     Yussuf Khalil <dev@...345.net>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] drm/i915: Replace "Broadcast RGB" with "RGB quantization range" property

On Monday, April 13, 2020 11:40 PM, Yussuf Khalil <dev@...345.net> wrote:

> DRM now has a globally available "RGB quantization range" connector
> property. i915's "Broadcast RGB" that fulfils the same purpose is now
> considered deprecated, so drop it in favor of the DRM property.

For a UAPI point-of-view, I'm not sure this is fine. Some user-space
might depend on this property, dropping it would break such user-space.

Can we make this property deprecated but still keep it for backwards
compatibility?