So in this architecture we will have so many devices registered to the kernel? On 6/15/07, Liam Girdwood <lg@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 2007-06-14 at 20:06 +0200, Manuel Lauss wrote: > > Hi Liam, > > > > Is it possible to have 2 physical I2S units (which are connected to the same > > codec) be repesented as a single ASoC device? (The SH7760 has 2 I2S units > > which are "halfduplex" (only transmit OR capture at a time). My dev platform > > simply uses the second unit for capture > > > > Yes. I would create two struct snd_soc_device_drivers in your i2s.c > file. The first would be the driver for the 2 halfduplex I2S units and > the second would be a full duplex driver for a merged I2S controller > (made up of the 2 halfduplex units). This way a device can either probe > against the halfduplex or full duplex driver based on the driver ID. > > > > > I need a trigger callback in the machine driver to properly support > > multichannel I2S audio on Au1200 (the Au1200 can only do stereo; to get > > more channels we double/quadruple the I2S LRCLK coming from the codec; > > however the CPLD needs to be told when a new sample starts; although > > maybe that can be worked around in VHDL) > > > > I'll add trigger. Probably easier to do this in C than VHDL ;) > > Liam > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
