Re: [alsa-devel] [PATCH 1/3] ASoC: Davinci: McASP: add support new McASP IP Variant

On Fri, Aug 31, 2012 at 06:20:57PM +0530, Hebbar, Gururaja wrote:

• 	if (dev->version == MCASP_VERSION_3) {
  

• 		mcasp_clr_bits(dev->base + MCASP_VER3_RFIFOCTL,
  					FIFO_ENABLE);
  

• 	mcasp_set_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
  

• 		mcasp_set_bits(dev->base + MCASP_VER3_RFIFOCTL,
  					FIFO_ENABLE);
  

• 	} else {
  

• 		mcasp_clr_bits(dev->base +
  

• 			DAVINCI_MCASP_RFIFOCTL,	FIFO_ENABLE);
  

• 		mcasp_set_bits(dev->base +
  

• 			DAVINCI_MCASP_RFIFOCTL,	FIFO_ENABLE);
  

• 	}
  

This is all basically OK but it seems like it'd be better if all these dev->version checks were switch statements. That way when the hardware designers get bored and add version 4 of the register map it'll slot in naturally, and it'll be more clear what the code currently handles.