From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Mon, 30 Nov 2009 13:43:05 +0100 Subject: [alsa-devel] [PATCH V2] Add i.MX sound support In-Reply-To: References: <1259163666-30344-1-git-send-email-s.hauer@pengutronix.de> <20091127075834.GG27548@pengutronix.de> <20091127095416.GK27548@pengutronix.de> Message-ID: <20091130124305.GQ27548@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Nov 30, 2009 at 11:43:23AM +0100, javier Martin wrote: > Hi Sascha, > have you tested capture direction on an i.MX27 based board? > > I have been testing your patches in the place you suggested and playback > seems to work fine but I have several problems with capture stream. I found > a BUG in the audmux_v1 code > and I have fixed it but I am still having problems with capture. The file > keeps empty and nothing is recorded. Capture works fine on my boards. > > Please could you try the following on an i.MX27 based board? > > arecord -t raw -c 1 -f S16_LE test.wav Does it work with two channels? Do you use DMA or FIQ? Could you try the other variant? It helped me a lot during development to use a tool like memedit (http://www.pengutronix.de/software/memedit/index_en.html) to show a register dump of the SSI/Audmux units of a working setup and a non working setup. Usually the differences showed quite fast why one was working and the other was not. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |