From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:51726 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753377Ab2GINem (ORCPT ); Mon, 9 Jul 2012 09:34:42 -0400 Message-ID: <4FFADDEA.3000808@iki.fi> Date: Mon, 09 Jul 2012 16:34:34 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Hans de Goede CC: Linux Media Mailing List , hverkuil@xs4all.nl Subject: Re: [PATCH 4/4] radio-si470x: Lower firmware version requirements References: <1339681394-11348-1-git-send-email-hdegoede@redhat.com> <1339681394-11348-4-git-send-email-hdegoede@redhat.com> <4FF45FF7.4020300@iki.fi> <4FF5515A.1030704@redhat.com> <4FF5980F.8030109@iki.fi> <4FF59995.4010604@redhat.com> <4FF5A119.6020903@iki.fi> <4FF5ADE3.5040600@redhat.com> <4FF7EC0E.7060200@redhat.com> <4FF7FAB6.7040508@iki.fi> <4FF885B2.3070509@redhat.com> <4FFAA1B9.6020306@iki.fi> <4FFAAC8F.5080100@redhat.com> <4FFAC75B.5060506@iki.fi> <4FFAD666.5060402@redhat.com> In-Reply-To: <4FFAD666.5060402@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hello On 07/09/2012 04:02 PM, Hans de Goede wrote: > On 07/09/2012 01:58 PM, Antti Palosaari wrote: >> On 07/09/2012 01:03 PM, Hans de Goede wrote: >> If I tune using old radio it works. If I tune using latest radio but >> with option -l 0 (./console/radio -l 0) it also works. Using "arecord >> -D hw:2,0 -r96000 -c2 -f S16_LE | aplay -" to listen. So it seems that >> latest radio with alsa loopback is only having those problems. >> > > Ok. >> >> These are the patches: >> radio-si470x: Don't unnecesarily read registers on G_TUNER >> radio-si470x: Lower hardware freq seek signal treshold >> radio-si470x: Always use interrupt to wait for tune/seek completion >> radio-si470x: Lower firmware version requirements >> >> And from that I can see it loads new driver as it does not warn about >> software version - only firmware. > > Right, so what I want to do is to lower the firmware requirement to 12, > so that it won't complain > for your device since that seems to be working fine. Does that sound > like a good idea to you? Yes, indeed lower it to the 12 as it works to get rid of those warnings. It still cracks but rarely, once per 2 mins or so when using arecord + aplay. The whole journey of playing that device was idea to learn V4L2 radio API as I was planning to add SDR functionality. Anyhow, I am a little bit disappointed because that radio uses snd-usb-audio module for audio. Do you know any cheap usb radio which uses vendor specific USB interface, not standard profiles? regards Antti -- http://palosaari.fi/