On Mon, Mar 13, 2017 at 4:53 PM, Alan Tull <at...@kernel.org> wrote: > Set of patches that supports writing code that uses > FPGA regions without Device Tree overlays.
OK here's where I try to clarify my intention for this code. And beg for reviews :) This patchset is intended as a stepping stone towards supporting PCIe FPGAs by allowing fpga regions to be created and used in without device tree overlays. Without it, I can see a lot of code coming down the line where people have to reinvent things that aren't called fpga-regions but ultimately are doing the same thing. The idea is that if someone has some whizzbang scheme, that somehow knows "Oh I have a FPGA here and some bridges and I want to program it without getting a kernel oops", then that code can use fpga_region_register() to create an fpga region device and tell it what fpga manager to use and give it a method for getting bridges. There is an example of usage in of_fpga_region_probe(). Then fpga_region_program_fpga() is available for programming the fpga, including handling enabling/disabling the bridges. Alan > > Main differences from the RFC: > * dropping the sysfs interface > * dropping support for more than one DT overlay on a region > > Alan Tull (5): > fpga-mgr: pass parameters for loading fpga in image info > fpga-bridge: support getting bridge from device > doc: fpga-mgr: separate getting/locking FPGA manager > fpga-mgr: separate getting/locking FPGA manager > fpga-region: separate out common code from dt specific code > > Documentation/fpga/fpga-mgr.txt | 19 +- > drivers/fpga/Kconfig | 12 +- > drivers/fpga/Makefile | 1 + > drivers/fpga/fpga-bridge.c | 107 +++++++-- > drivers/fpga/fpga-mgr.c | 56 ++++- > drivers/fpga/fpga-region.c | 473 > +++++++-------------------------------- > drivers/fpga/fpga-region.h | 50 +++++ > drivers/fpga/of-fpga-region.c | 453 +++++++++++++++++++++++++++++++++++++ > include/linux/fpga/fpga-bridge.h | 7 +- > include/linux/fpga/fpga-mgr.h | 17 ++ > 10 files changed, 766 insertions(+), 429 deletions(-) > create mode 100644 drivers/fpga/fpga-region.h > create mode 100644 drivers/fpga/of-fpga-region.c > > -- > 2.7.4 >
