From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Clemens Ladisch" Subject: Re: snd-usb-audio - Driver for M-Audio Fast Track Pro Date: Mon, 14 Aug 2006 13:16:36 +0200 Message-ID: <1155554196.1617.268317929@webmail.messagingengine.com> References: <20060808181650.llg22g6lwgcs4c0s@zeus.oda.li> <1155056548.23266.267914050@webmail.messagingengine.com> <20060808184722.6627D55E2E7@zeus.olymp.home> <20060808222250.kgpv3965ss0oowoo@webmail.supelec.fr> <20060808214138.419D4DE279@zeus.olymp.home> <20060809000741.7zournuj4c0wcwc8@webmail.supelec.fr> <20060810213340.A53144FA617@zeus.olymp.home> <20060811112018.8j3chcuqg4c444w4@webmail.supelec.fr> <20060813214825.5654969E159@zeus.olymp.home> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20060813214825.5654969E159@zeus.olymp.home> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@lists.sourceforge.net Errors-To: alsa-devel-bounces@lists.sourceforge.net To: Peter Oehry , Thibault Le Meur Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Peter Oehry wrote: > Thibault Le Meur wrote: > 2. Another interesting thing is that in fact the device sensds the data > little endian in 16-Bit mode and big endian in 24-Bit mode. IIRC other M-Audio devices to that, too. The reasons seems to be that the device is basically big-endian, but the 16-bit interfaces are designed to work with Windows' usbaudio.sys. > For what I think it should be possible to switch modes without restarting > the kernel module and switch on and off the device. It should be possible > to switch the mode by resetting all interfaces and setting up the new > altsets like the windows driver does. This would eventually need a new > proc interace Why proc? If the configuration needs to be changed at runtime, and if the driver cannot do this automatically, a mixer control would be the best solution. > How do I know if I also need a quirk for the midi devices? You need a quirk when there aren't any class-specific descriptors for the MIDI port. Regards, Clemens ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642