Dne Friday 01 of August 2008 19:59:44 Nitin Mahajan napsal(a): > HI! > > --- On Fri, 1/8/08, Marek Vasut <marek.vasut@xxxxxxxxx> wrote: > > From: Marek Vasut <marek.vasut@xxxxxxxxx> > > Subject: Re: WM9712 Not Giving output > > To: alsa-devel@xxxxxxxxxxxxxxxx, nitinm76@xxxxxxxxx > > Date: Friday, 1 August, 2008, 11:10 PM > > Dne Friday 01 of August 2008 19:27:24 Nitin Mahajan > > > > napsal(a): > > > HI! > > > > > > --- On Fri, 1/8/08, Mark Brown > > > > <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > From: Mark Brown > > > > <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > > > > > > Subject: Re: WM9712 Not Giving > > > > output > > > > > > To: "Nitin Mahajan" > > > > <nitinm76@xxxxxxxxx> > > > > > > Cc: alsa-devel@xxxxxxxxxxxxxxxx, > > > > "Manuel" <mano@xxxxxxxxxxxxxxxxxxxxxxx> > > > > > > Date: Friday, 1 August, 2008, 9:32 PM > > > > On Fri, Aug 01, 2008 at 08:31:03AM -0700, Nitin > > > > Mahajan > > > > > > wrote: > > > > > I am using a WM9712 codec chip with the AC97 > > > > > > > > controller on AMD AU1250. > > > > > > > > > Linux kernel version 2.6.24.2. > > > > > > > > > > On AC97 controller's side, I can see the > > > > DMA > > > > > > happening on the host > > > > > > > > > processor, interrupts also coming. > > > > > > > > This suggests a mixer configuration problem. > > > > > > > > > On the mixer front, I did unmute and set the > > > > vol to > > > > > > max for PCM and > > > > > > > > > Headphone. I did not find any Master control > > > > with this > > > > > > chip. Isn't > > > > > > > > > there any master control with this chip? > > > > > > > > No. > > > > > > If Master is not there, logically are the enough for > > > > playback? > > > > > amixer set 'PCM' 255 unmute > > > amixer set 'Headphone' 255 unmute > > > > > > > > Can some one please throw more light on the > > > > Mixer > > > > > > part, specific to > > > > > > > > > this chip. > > > > > > > > > > What Mixer controls do I need to set with > > > > what values > > > > > > for playback and > > > > > > > > > capture respectively with this chip? > > > > > > > > Check the configuration of the Left HP Mixer and > > > > Right HP > > > > > > Mixer PCM > > > > Playback switches. These should be enabled in > > > > order to > > > > > > play back via > > > > the headphone output. > > > > > > While writing the reply , the hardware is not with me. > > > But I wil check these tommorow. > > > > > > > If you still can't get audio output with that > > > > please > > > > > > send a copy of your > > > > mixer configuration - run the command > > > > > > > > alsactl store -f mixer-config > > > > > > > > to write a file 'mixer-config' with this > > > > information in it. Please > > > > also check your kernel log from when the driver > > > > is loaded > > > > > > and when you > > > > configure the mixer. > > > > > > > > There is documentation of the audio paths > > > > supported by the > > > > > > chip in the > > > > > > I saw the figure in the datasheet, its quite > > > > explainatory, as to which > > > > > registers are involved in which path. > > > > > > > datasheet, available from: > > > > > > > > http://www.wolfsonmicro.com/products/WM9712/ > > > > > > > > > > > > and you may find the audio route mappings in the > > > > WM9712 > > > > > > driver useful to > > > > refer to - the 'audio_map' table in the > > > > driver > > > > > > which shows how the parts > > > > of the device are connected. The format is { > > > > destination, > > > > > > control, > > > > source }. > > > > > > Thanks and regards > > > > > > -Nitin > > > > > > Send instant messages to your online friends > > > > http://uk.messenger.yahoo.com > > > > > _______________________________________________ > > > Alsa-devel mailing list > > > Alsa-devel@xxxxxxxxxxxxxxxx > > > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > > > Hi, > > try searching the mailing list for "[PATCH] wm9712 > > mono mixer". That may help > > you. > > Interesting, do you mean that "Right HP Mixer" and "Left HP Mixer" should > be "Right Mixer" and "Left Mixer" ? > > thanks and regards > > -Nitin yea, and you should see alsa warning about it in kernel log as well. > > > _______________________________________________ > > Alsa-devel mailing list > > Alsa-devel@xxxxxxxxxxxxxxxx > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > > Send instant messages to your online friends http://uk.messenger.yahoo.com This message wasnt CCed to alsa-devel, re-adding. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
