Hi Pavel, > On Jan 13, 2015, at 09:28 , Pavel Machek <pavel@xxxxxxx> wrote: > > Hi! > >>>>>>>>>> +What: /sys/class/fpga_manager/<fpga>/firmware >>>>>>>>>> +Date: October 2014 >>>>>>>>>> +KernelVersion: 3.18 >>>>>>>>>> +Contact: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> >>>>>>>>>> +Description: Name of the FPGA image file to load using firmware >>>>>>>>>> class. >>>>>>>>> >>>>>>>>> This one is ugly: it unneccessarily passes firmware name through the >>>>>>>>> kernel. Just make interface and code simpler by always passing >>>>>>>>> "socfpga-fpga-image" or something like that. > ... > >>> What is cumbersome about symlink? Why is "fake" symlink in sysfs better? >>> >>>> Previous uses of the firmware layer has been to use it to load once after >>>> bootup; this is different since some use cases will want to switch out >>>> the FPGA image. If someone wants there to be only one FPGA image on >>>> the FGPA forever, they will probably not be using this framework; their >>>> FPGA will probably be loaded before Linux boots up. >>> >>> Why? I have just one image on the fpga, and would prefer to load it >>> from Linux. >> >> Pavel: These patches target staging and sysfs interface doesn't need to be stable >> at this time. I would prefer to add these patches to staging for 3.20 >> and feel free to send the patch which fix this. > > Interesting way to address patch review. "We'll merge it, and you can > fix it up later". > >> With your code will be exactly clear how you want to use it and we can >> talk about it. > > I'm pretty sure Alan knows what I want at this point, he just does not > want to do it. > > For the record, I want to drop "firmware" file, use fixed firmware > name, and deal with multiple firmwares in userspace (using symlink or > udev magic). > That’s completely bogus. Using a fixed firmware file does not respond to real world usage, and there are no words to describe the hacks using symlinks and udev in an embedded product. > I believe this is simplest solution, should be adequate, and is > certainly less ugly than implementing fake symlink in > /sys/.../firmware. And I have yet to hear what is wrong with that > suggestion. > Everything. > Thanks, Regards — Pantelis > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
