From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932631AbcGDVIm (ORCPT ); Mon, 4 Jul 2016 17:08:42 -0400 Received: from mail-wm0-f42.google.com ([74.125.82.42]:36188 "EHLO mail-wm0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932510AbcGDVIj (ORCPT ); Mon, 4 Jul 2016 17:08:39 -0400 Subject: Re: IR remote stopped working in kernels 4.5 and 4.6 To: James Bottomley , linux-media@vger.kernel.org, linux-kernel References: <1467664616.2288.12.camel@HansenPartnership.com> From: Heiner Kallweit Message-ID: <43cc65d3-7d9f-2ead-8a21-fcc6ee0d147e@gmail.com> Date: Mon, 4 Jul 2016 23:08:32 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <1467664616.2288.12.camel@HansenPartnership.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 04.07.2016 um 22:36 schrieb James Bottomley: > This looks to be a problem with the rc subsystem. The IR controller in > question is part of a cx8800 atsc card. In the 4.4 kernel, where it > works, this is what ir-keytable says: > > Found /sys/class/rc/rc0/ (/dev/input/event12) with: > Driver cx88xx, table rc-hauppauge > Supported protocols: other lirc rc-5 jvc sony nec sanyo mce-kbd rc-6 sharp xmp > Enabled protocols: lirc nec > Name: cx88 IR (pcHDTV HD3000 HDTV) > bus: 1, vendor/product: 7063:3000, version: 0x0001 > Repeat delay = 500 ms, repeat period = 125 ms > > And in 4.6, where it doesn't work: > > Found /sys/class/rc/rc0/ (/dev/input/event12) with: > Driver cx88xx, table rc-hauppauge > Supported protocols: lirc > Enabled protocols: lirc > Name: cx88 IR (pcHDTV HD3000 HDTV) > bus: 1, vendor/product: 7063:3000, version: 0x0001 > Repeat delay = 500 ms, repeat period = 125 ms > > The particular remote in question seems to require the nec protocol to > work and the failure in 4.5 and 4.6 is having any supported protocols > at all. I can get the remote to start working again by adding the nec > protocol: > > echo nec > /sys/class/rc/rc0/protocols > > But it would be nice to have this happen by default rather than having > to add yet another work around init script. > Meanwhile decoder modules are loaded on demand only. This can be done automatically w/o the need for additional init scripts. If /etc/rc_maps.cfg includes a keymap with type NEC then the nec decoder module is loaded automatically. My rc_maps.cfg looks like this (and causes the SONY decoder module to be loaded automatically): #driver table file * * sony-rm-sx800 And the keymap: # table sony-rm-sx800, type SONY 0x110030 KEY_PREVIOUS 0x110031 KEY_NEXT 0x110033 KEY_BACK .. .. Heiner > James > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >