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Wed, 24 Aug 2022 11:30:53 -0400 (EDT) Date: Wed, 24 Aug 2022 17:30:51 +0200 From: Maxime Ripard To: Charles Mirabile Cc: Stefan Wahren , linux-kernel , Peter Robinson , Serge Schneider , Nicolas Saenz Julienne , Mattias Brugger , linux-rpi-kernel@lists.infradead.org, Linux ARM , rh-kdlp@googlegroups.com, Joel Slebodnick , Joel Savitz , Noralf =?utf-8?Q?Tr=C3=B8nnes?= Subject: Re: [PATCH v10 0/6] Raspberry Pi Sense HAT driver Message-ID: <20220824153051.bx6kfcih76kh3exc@houat> References: <20220823174158.45579-1-cmirabil@redhat.com> MIME-Version: 1.0 In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220824_083057_569132_461248F8 X-CRM114-Status: GOOD ( 17.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============8248601134980624301==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============8248601134980624301== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="qnkn4bktoy4h2gpu" Content-Disposition: inline --qnkn4bktoy4h2gpu Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 24, 2022 at 08:06:59AM -0400, Charles Mirabile wrote: > On Tue, Aug 23, 2022 at 5:30 PM Stefan Wahren wr= ote: > > > drivers/auxdisplay: sensehat: Raspberry Pi Sense HAT display driver > > We don't have an Ack for this display driver. Maybe we should ask Maxime > > Ripard and Noralf Tr=F8nnes especially Pavel Machek had concerns about = the > > right subsystem? > > I just looked back at the comments from Pavel on v9. I had meant to > reply to him, and I actually drafted something but it got lost in the > shuffle and I never sent it (also my bad). > > The driver is an fbdev in the raspberry pi tree, and that is where we > started when upstreaming, but right from the outset we were told that > it couldn't be an fbdev since that subsystem is being deprecated > the replacement is the DRM subsystem Indeed > but (as Matthias Brugger suggests) that is probably overkill for an > 8x8 display. Does that settle the subsystem question? If you were aiming for an fbdev driver, a KMS driver these days would be notably simpler. We've added simpler and simpler devices, such as the SSD1306 recently, so I can't see anything wrong with using KMS either. Maxime --qnkn4bktoy4h2gpu Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCYwZEKwAKCRDj7w1vZxhR xeP5AP49OPG5mL6W0tELzpbzif+x+BpthcKKwThVhaPXEL3JcwD+PBhrC2xNONxU yrmVGBo/7cUtnUmAjR/2f1Ih0jR0Kws= =QqBo -----END PGP SIGNATURE----- --qnkn4bktoy4h2gpu-- --===============8248601134980624301== 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 --===============8248601134980624301==--