[alsa-devel] [PATCH 3/4] ASOC: WM8731 codec: add SPI support as well as I2C

[Liam Girdwood]

On Mon, 2008-09-01 at 14:52 +0100, Alan Horstmann wrote:
> We have just started trying this out as an alternative to i2c, and picked out 
> the following:
> 
> On Wednesday 27 August 2008 10:39, Bryan Wu wrote:
> > -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
> > +#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) && !defined
> > (CONFIG_SND_SOC_WM8731_SPI)
> 
> I think this needs extra brackets round the ||'s before the && thus:
> 
> > +#if (defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)) && !defined
> > (CONFIG_SND_SOC_WM8731_SPI)
> 
> in order to force use of SPI when (CONFIG_SND_SOC_WM8731_SPI) and (CONFIG_I2C) 
> are both defined.  Or have we misunderstood the intention?  This is in 2 
> other places also in the patch.
> 

It may be simpler to only have CONFIG_SND_SOC_WM8731_SPI and
CONFIG_SND_SOC_WM8731_I2C definitions for all the codec drivers. These
would be set by machine Kconfig. 

Liam