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Mon, 21 Sep 2020 10:43:54 -0400 (EDT) Date: Mon, 21 Sep 2020 16:43:52 +0200 From: Maxime Ripard To: Dave Stevenson Subject: Re: [PATCH] drm/vc4: hvs: Pull the state of all the CRTCs prior to PV muxing Message-ID: <20200921144352.deohjbuzlo4xq2gx@gilmour.lan> References: <20200917121623.42023-1-maxime@cerno.tech> MIME-Version: 1.0 In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200921_104358_693463_4BBE2D02 X-CRM114-Status: GOOD ( 16.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tim Gover , DRI Development , Hoegeun Kwon , Eric Anholt , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============0581124088151597045==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============0581124088151597045== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="rdeo5nfc5emh3nvq" Content-Disposition: inline --rdeo5nfc5emh3nvq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 18, 2020 at 03:52:55PM +0100, Dave Stevenson wrote: > Hi Maxime >=20 > On Thu, 17 Sep 2020 at 13:16, Maxime Ripard wrote: > > > > The vc4 display engine has a first controller called the HVS that will > > perform the composition of the planes. That HVS has 3 FIFOs and can > > therefore compose planes for up to three outputs. The timings part is > > generated through a component called the Pixel Valve, and the BCM2711 h= as 6 > > of them. > > > > Thus, the HVS has some bits to control which FIFO gets output to which > > Pixel Valve. The current code supports that muxing by looking at all the > > CRTCs in a new DRM atomic state in atomic_check, and given the set of > > contraints that we have, assigns FIFOs to CRTCs or reject the mode >=20 > s/contraints/constraints Oops, thanks I've fixed it while applying it Maxime --rdeo5nfc5emh3nvq Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCX2i8KAAKCRDj7w1vZxhR xTm7AP9P8ULwR785y4qr8MaWbsJpGOcnsLov6sy2iKNGLYb2gAD+Np/Gic+az9rn PB9kayIMYYAjVwZZ1sQziyOomkAsoAQ= =njlG -----END PGP SIGNATURE----- --rdeo5nfc5emh3nvq-- --===============0581124088151597045== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0581124088151597045==--