[alsa-devel] davici-mcasp: "tx-num-evt" confusion with number of serializers

Mike Looijmans mike.looijmans at topic.nl
Thu Feb 28 10:32:15 CET 2013

On 02/28/2013 10:06 AM, Michal Bachraty wrote:
> Hi Mike,
> Many thanks!
> Now all about "tx-num-evt" or "rx-num-evt" make sense.
>> Maybe the misleading "rx_num_evt" should be renamed to "use_rx_fifo". I
>> understand that not all McASP interfaces have a FIFO
> Maybe, "rx_fifo_depth" could be also used.

That's a big improvement over "rx_num_evt". The first time I saw this 
struct, I thought I had to set rx_num_evt to the number of receiving AXR 
pins in use.

Maybe call it "rx_min_fifo_depth" because just "depth" might be 
interpreted as the capaciity or maximum size of the fifo, while in fact 
the parameter is a minimum amount of data to be put into the FIFO 
buffer. Of maybe "rx_fifo_thd" to indicate it's a threshhold. And use 
the same name for the "tx" part as well (tx_fifo_thd or tx_fifo_min_depth).


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