Hi, Several months ago I made some noise on the linux-usb-devel mailing list about wanting some ioctls added to usb/printer.c to be able to dynamically change alternate settings, send a certain HP vendor-specific command, and get more information about the peripheral, for the benefit of the "ptal-mlcd" user-mode MLC/1284.4 daemon which is part of the HP OfficeJet Linux driver (http://hpoj.sourceforge.net). I have successfully implemented the most important ioctls on my wishlist, and I'd like to take this opportunity to invite folks to review and/or test my changes. It's available at "http://hpoj.sf.net/download/experimental/linux-usb/"; in both complete-file and diff-against-2.4.12 formats. While I think it's a little premature to get these changes incorporated into an "official" kernel, I would greatly appreciate any feedback on issues that would prevent such an incorporation.
For the hpoj folks, I also checked into CVS some ptal-mlcd changes that take advantage of the new printer.c functionality, especially to add low-level I/O support for the HP PhotoSmart printers. It would be helpful for those who use ptal-mlcd in USB mode to try out these changes and let me know of any problems. (BTW, preliminary support for the photo-card readers on the HP PhotoSmart printers and PSC 950 all-in-one is also now available in the hpoj CVS, in case anybody with those models is interested in trying it out.) David ------------------- Here is a copy of the README file: This is an update for the Linux USB printer.c driver for 2.2 and 2.4 kernels. It provides ioctls to enable the CVS version of ptal-mlcd (http://hpoj.sourceforge.net) to dynamically switch alternate settings and parallel-port-style channels. This allows ptal-mlcd to work over USB with HP PhotoSmart printers and some DeskJets (9xx, 12xx), and it fixes the problem where ptal-mlcd was needed in order to be able to print to the LaserJet 1200 and 2200. NOTE: If you use this version of printer.c with the 0.8 (not latest CVS) version of ptal-mlcd, then you'll need to use the "proto_bias" fix documented at "http://hpoj.sourceforge.net/todo.shtml";. See http://hpoj.sourceforge.net/doc/ioctl_requests.html for more information on these ioctls, not all of which are actually implemented yet. Files in this directory: - README -- this file - printer.c -- the hacked version of printer.c - Makefile -- the makefile I use so I don't have to rebuild the whole kernel - printer-2.4.12.c -- for comparison, the printer.c from kernel 2.4.12 - printer.c.diff -- a diff between printer-2.4.12.c and printer.c -- David Paschal ([EMAIL PROTECTED], [EMAIL PROTECTED]) _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
