Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755729AbdDEPkS (ORCPT ); Wed, 5 Apr 2017 11:40:18 -0400 Received: from mail-qt0-f178.google.com ([209.85.216.178]:36425 "EHLO mail-qt0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755386AbdDEPjI (ORCPT ); Wed, 5 Apr 2017 11:39:08 -0400 MIME-Version: 1.0 In-Reply-To: <20170405115336.7135e542@vento.lan> References: <1490661656-10318-1-git-send-email-steve_longerbeam@mentor.com> <1490661656-10318-20-git-send-email-steve_longerbeam@mentor.com> <1490894749.2404.33.camel@pengutronix.de> <20170404231053.GE7909@n2100.armlinux.org.uk> <19f0ce92-cad6-8950-8018-e3224e2bf266@gmail.com> <7235285c-f39a-64bc-195a-11cfde9e67c5@gmail.com> <20170405082134.GF7909@n2100.armlinux.org.uk> <1491384859.2381.51.camel@pengutronix.de> <20170405115336.7135e542@vento.lan> From: Devin Heitmueller Date: Wed, 5 Apr 2017 11:39:06 -0400 Message-ID: Subject: Re: [RFC] [media] imx: assume MEDIA_ENT_F_ATV_DECODER entities output video on pad 1 To: Mauro Carvalho Chehab Cc: Philipp Zabel , Russell King - ARM Linux , Mauro Carvalho Chehab , Steve Longerbeam , robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, kernel@pengutronix.de, fabio.estevam@nxp.com, Hans Verkuil , nick@shmanahar.org, markus.heiser@darmarit.de, laurent.pinchart+renesas@ideasonboard.com, bparrot@ti.com, geert@linux-m68k.org, Arnd Bergmann , sudipm.mukherjee@gmail.com, minghsiu.tsai@mediatek.com, tiffany.lin@mediatek.com, jean-christophe.trotin@st.com, horms+renesas@verge.net.au, niklas.soderlund+renesas@ragnatech.se, robert.jarzmik@free.fr, songjun.wu@microchip.com, andrew-ct.chen@mediatek.com, Greg Kroah-Hartman , shuah@kernel.org, "sakari.ailus@linux.intel.com" , Pavel Machek , devicetree@vger.kernel.org, Linux Kernel , linux-arm-kernel@lists.infradead.org, Linux Media Mailing List , devel@driverdev.osuosl.org, Steve Longerbeam Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 720 Lines: 17 > Currently, the driver doesn't support (2), because, at the time > I wrote the driver, I didn't find a way to read the interrupts generated > by tvp5150 at em28xx[1], due to the lack of em28xx documentation, > but adding support for it shoudn't be hard. I may eventually do it > when I have some time to play with my ISEE hardware. For what it's worth, I doubt most of the em28xx designs have the tvp5150 interrupt request line connected in any way. You would likely have to poll the FIFO status register via I2C, or use the feature to embed the sliced data into as VANC data in the 656 output (as described in sec 3.9 of the tvp5150am1 spec). Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com