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
