From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Gatliff Subject: Lots of noob questions on writing an ALSA driver for SM501 Date: Tue, 26 Jul 2005 09:16:46 -0500 Message-ID: <42E645CE.609@billgatliff.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Guys: I'm attempting to write my first ALSA driver. My objective is to get sounds to emerge through a UCB1400 connected to an SM501's AC97-link controller, and to receive sounds coming from the UCB1400's audio input(s). I'm going over Takashi Iwai's "Writing an ALSA Driver" document, but there are a few things I just don't understand yet. I'm hoping that someone here will be able to set me straight. The SM501 has an AC97-Link controller, but nothing else related to audio as far as I can tell. In my hardware the SM501 is memory-mapped, and is not a PCI device. The host processor is an AT91RM9200 (ARM). As far as I can tell, I need a "PCM Interface" driver to provide a PCM device file to userspace. It also looks like I need an "AC97 Interface" driver to provide access to the UCB1400 during playback and recording. Is this right? I'm hoping someone will set me straight here. Thanks!! b.g. -- Bill Gatliff bgat@billgatliff.com The true Southern watermelon is a boon apart, and not to be mentioned with commoner things. It is chief of the world's luxuries, king by the grace of God over all the fruits of the earth. When one has tasted it, he knows what the angels eat. It was not a Southern watermelon that Eve took; we know it because she repented. -- Mark Twain, "Pudd'nhead Wilson's Calendar" ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click