[linux-dvb] SAA7146 short delay flag and budget cards

hunold at linuxtv.org hunold at linuxtv.org
Mon Sep 26 15:03:07 CEST 2005


Hello Johannes, 

Johannes Stezenbach writes:
> Unless someone can explain why short_delay==0 is necessary I vote
> for removing this altogether and making the use of udelay(10)
> the default. 
> 
> Is short_delay==0 necessary for some analog saa7146 based cards?

No. All analog saa7146 based cards use interrupt driver i2c transfers. 

One exception: "Multimedia eXtension Boards" with an installed add-on sound 
module use polling, but these boards are rare. But for these polling with 
udelay(10) should be ok as well. 

> Johannes

CU
Michael. 




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