On Tue, Jul 12, 2016 at 3:36 PM, Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> wrote: > This framework adds API functions for enabling/ > disabling FPGA bridges under kernel control. > > This allows the Linux kernel to disable FPGA bridges > during FPGA reprogramming and to enable FPGA bridges > when FPGA reprogramming is done. This framework is > be manufacturer-agnostic, allowing it to be used in > interfaces that use the FPGA Manager Framework to > reprogram FPGA's. > > The functions are: > * of_fpga_bridge_get > * fpga_bridge_put > Get/put an exclusive reference to a FPGA bridge. > > * fpga_bridge_enable > * fpga_bridge_disable > Enable/Disable traffic through a bridge. > > * fpga_bridge_register > * fpga_bridge_unregister > Register/unregister a device-specific low level FPGA > Bridge driver. > > Get an exclusive reference to a bridge and add it to a list: > * fpga_bridge_get_to_list > > To enable/disable/put a set of bridges that are on a list: > * fpga_bridges_enable > * fpga_bridges_disable > * fpga_bridges_put > > Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> > --- > v2: Minor cleanup > v12: Bump version to line up with simple fpga bus > Remove sysfs > Improve get/put functions, get the low level driver too. > Clean up class implementation > Add kernel doc documentation > Rename (un)register_fpga_bridge -> fpga_bridge_(un)register > v13: Add inlined empty functions for if not CONFIG_FPGA_BRIDGE > Clean up debugging > Remove unneeded #include in .h > Remove unnecessary prints > Remove 'label' DT binding. > Document the mutex > v14: Allow bridges with no ops > *const* struct fpga_bridge_ops > Add functions to git/put/enable/disable list of bridges > Add list node to struct fpga_bridge > Do of_node_get/put in of_fpga_bridge_get() > Add r/o attributes: name and state > v15: No change in this patch for v15 of this patch set > v16: Remove of_get_fpga_bus function > v17: No change to this patch in v17 of patch set > v18: No change to this patch in v18 of patch set > --- > drivers/fpga/Kconfig | 7 + > drivers/fpga/Makefile | 3 + > drivers/fpga/fpga-bridge.c | 388 +++++++++++++++++++++++++++++++++++++++ > include/linux/fpga/fpga-bridge.h | 55 ++++++ > 4 files changed, 453 insertions(+) > create mode 100644 drivers/fpga/fpga-bridge.c > create mode 100644 include/linux/fpga/fpga-bridge.h > > diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig > index d614102..46e20af 100644 > --- a/drivers/fpga/Kconfig > +++ b/drivers/fpga/Kconfig > @@ -25,6 +25,13 @@ config FPGA_MGR_ZYNQ_FPGA > help > FPGA manager driver support for Xilinx Zynq FPGAs. > > +config FPGA_BRIDGE > + bool "FPGA Bridge Framework" Same here. A bool Kconfig but module.h etc. used in the driver. Either make the code modular with a tristate if there is a valid use case for that, or get rid of the modular references. Thanks, Paul. -- -- 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
