From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCHv6 4/4] drm/omap: add support for manually updated displays Date: Wed, 22 May 2019 20:21:52 +0200 Message-ID: <20190522182152.GA10003@amd> References: <20190403195413.djfrgzuj7povdksi@earth.universe> <20190403201326.3127-1-sebastian.reichel@collabora.com> <20190403201326.3127-5-sebastian.reichel@collabora.com> <20190404001109.GZ49658@atomide.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="fUYQa+Pmc3FrFX/N" Return-path: Content-Disposition: inline In-Reply-To: <20190404001109.GZ49658@atomide.com> Sender: linux-kernel-owner@vger.kernel.org To: Tony Lindgren Cc: Sebastian Reichel , Sebastian Reichel , Tomi Valkeinen , Laurent Pinchart , "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com List-Id: linux-omap@vger.kernel.org --fUYQa+Pmc3FrFX/N Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2019-04-03 17:11:09, Tony Lindgren wrote: > * Sebastian Reichel [190403 20:14]: > > This adds the required infrastructure for manually updated displays, > > such as DSI command mode panels. While those panels often support > > partial updates we currently always do a full refresh. > >=20 > > The display will be refreshed when something calls the dirty callback, > > such as libdrm's drmModeDirtyFB(). This is currently being done at least > > by the kernel console and Xorg (with modesetting driver) in their > > default configuration. Weston does not implement this and the fbdev > > backend does not work (display will not update). Weston's DRM backend > > uses double buffering and the page flip will also trigger a display > > refresh. >=20 > I've tested this with Linux next and the latest lm3532 > patches and it works fine as long as we leave out the > backlight =3D <&lcd_backlight> entry from dts like I > replied in the lm3532 tread. So as far as I'm concerned, > we're good to go: >=20 > Tested-by: Tony Lindgren I've tested this on 5.2-rc1, and it is still neccessary, still needed, and still not merged. How can I help? Can the patches simply be picked up for drm tree? Tested-by: Pavel Machek Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --fUYQa+Pmc3FrFX/N Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlzlk0AACgkQMOfwapXb+vJXQQCfQd2JMKV5aE0IX8qcHplWoUFq tQsAn2FpwuQw/t+w9mpUiAiZ/CP53ppT =FNwu -----END PGP SIGNATURE----- --fUYQa+Pmc3FrFX/N--