From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752462AbeC0Ip1 (ORCPT ); Tue, 27 Mar 2018 04:45:27 -0400 Received: from mail.bootlin.com ([62.4.15.54]:37939 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752176AbeC0IpY (ORCPT ); Tue, 27 Mar 2018 04:45:24 -0400 Message-ID: <1522140259.1110.43.camel@bootlin.com> Subject: Re: [PATCH 02/10] drm/sun4i: Disable YUV channel when using the frontend and set interlace From: Paul Kocialkowski To: Maxime Ripard Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, David Airlie , Chen-Yu Tsai , Daniel Vetter , Gustavo Padovan , Sean Paul Date: Tue, 27 Mar 2018 10:44:19 +0200 In-Reply-To: <20180327081731.he3lhnvqffuimsi5@flea> References: <20180321152904.22411-1-paul.kocialkowski@bootlin.com> <20180321152904.22411-3-paul.kocialkowski@bootlin.com> <20180323095529.5nptn5achjt3esog@flea> <1522137643.1110.4.camel@bootlin.com> <20180327081731.he3lhnvqffuimsi5@flea> Organization: Bootlin Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-TqBgsmTIJVY3lX8S124X" X-Mailer: Evolution 3.26.5 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-TqBgsmTIJVY3lX8S124X Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, On Tue, 2018-03-27 at 10:17 +0200, Maxime Ripard wrote: > On Tue, Mar 27, 2018 at 10:00:43AM +0200, Paul Kocialkowski wrote: > > Hi, > >=20 > > On Fri, 2018-03-23 at 10:55 +0100, Maxime Ripard wrote: > > > On Wed, Mar 21, 2018 at 04:28:56PM +0100, Paul Kocialkowski wrote: > > > > The YUV channel was only disabled in > > > > sun4i_backend_update_layer_formats, > > > > which is not called when the frontend is selected. > > > >=20 > > > > Thus, creating a layer with a YUV format handled by the backend > > > > and > > > > then > > > > switching to a format that requires the frontend would keep the > > > > YUV > > > > channel enabled for the layer. > > > >=20 > > > > This explicitly disables the YUV channel for the layer when > > > > using > > > > the > > > > frontend as well. It also sets the relevant interlace bit, which > > > > was > > > > missing in the frontend path as well. > > >=20 > > > This should be part of a separate patch. Usually, if you write "it > > > also does..." at the end of your commit log, it's a pretty good > > > indication that it should be another patch :) > >=20 > > I must say, I figured that this part was missing in the frontend > > path by > > chance and couldn't really test the feature, so I'm also tempted to > > drop > > it altogether. What do you think? >=20 > If you haven't been able to test it, then yeah, don't submit it. Alright, noted. > > Also, is interlacing actually used on any of the video outputs we > > support? Perhaps RGB? > > Composite would be a better guess :) Oh and I was wondering what CVBS was about. Now I know! It seems that we don't support it for now apparently, anyway. Thanks, --=20 Paul Kocialkowski, Bootlin (formerly Free Electrons) Embedded Linux and kernel engineering https://bootlin.com --=-TqBgsmTIJVY3lX8S124X Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEJZpWjZeIetVBefti3cLmz3+fv9EFAlq6BGMACgkQ3cLmz3+f v9EuTwf/ZgY6AiQawQw8GZcWQhxbI/5pi6HlkzM4ZAj6tLeIdkKO6S8tc/m4bvVv YnoVFqBpQitrwBHzvvRhhNVdoT5+tWOhpMxZyfrhBGwCBpMJkoaNj4rCE2zdEOCR nj1+tJ+ff/+QYmqDJkG9npdSRkFFYwsge/vMbnFi4QC2XBLD4f9ttE3DwWSRrNfb 6HvoqWTsyOsX6E7596lw5hb7pVPxVDnz/psL5JgI3MkK3NQSlwnYTqwAwX0+O+8j 343oY5cIK8palTNz6IcEE8o18mFqSLz9wa/3e71dh80afKCoPb6SFUuJr8eZL+z3 1UjNqkD1REzRB6pNnZ47qx0najarWQ== =o2eA -----END PGP SIGNATURE----- --=-TqBgsmTIJVY3lX8S124X--