Hi Laurent, On 03/09/2012 11:42 AM, Laurent Pinchart wrote:
Hi Jean-Philippe,
[snip]
From my experience, the ISP doesn't handle free-running sensors very well. There are other things it doesn't handle well, such as sensors stopping in the middle of the frame. I would consider this as limitations.
Considering choking on sensors which stop in the middle of the frame- is this just a limitation of the driver, or is it really a limitation of the ISP hardware itself? It is at least a limitation of the driver because we rely on the VD1 and VD0 interrupts, so we'll of course have problems if we never get to the last line. But isn't it conceivable to use HS_VS to do our end-of-frame stuff instead of VD0? Maybe then the ISP would be OK with frames that ended early, as long as they had reached VD1. Then of course, you could move VD1 to an even earlier line, even to the first line.
Do you think that's possible? -Michael MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner, Erhard Meier -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
