On 17.3.2017 21:11, Moritz Fischer wrote: > This adds support for the Xilinx LogiCORE PR Decoupler > soft-ip that does decoupling of PR regions in the FPGA > fabric during partial reconfiguration. > > Signed-off-by: Moritz Fischer <mdf@xxxxxxxxxx> > Cc: Michal Simek <michal.simek@xxxxxxxxxx> > Cc: Sören Brinkmann <soren.brinkmann@xxxxxxxxxx> > Cc: linux-kernel@xxxxxxxxxxxxxxx > Cc: devicetree@xxxxxxxxxxxxxxx > --- > Changes from v2: > - Added Michal's Signed-off-by btw: you forgot to add it above. :-) > - Added "xlnx,pr-decoupler" unversioned fallback > > Changes from v1: > - Added Michal as Co-Author since I pulled in some of his code > - Reworked clk handling in _remove() > - Pulled in Michal's version of show_enable(), ditched priv->enabled > > --- > drivers/fpga/Kconfig | 9 +++ > drivers/fpga/Makefile | 1 + > drivers/fpga/xilinx-pr-decoupler.c | 148 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 158 insertions(+) > create mode 100644 drivers/fpga/xilinx-pr-decoupler.c > > diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig > index ce861a2..ce0c91d 100644 > --- a/drivers/fpga/Kconfig > +++ b/drivers/fpga/Kconfig > @@ -63,6 +63,15 @@ config ALTERA_FREEZE_BRIDGE > isolate one region of the FPGA from the busses while that > region is being reprogrammed. > > +config XILINX_PR_DECOUPLER > + tristate "Xilinx LogiCORE PR Decoupler" > + depends on FPGA_BRIDGE > + help > + Say Y to enable drivers for Xilinx LogiCORE PR Decoupler. > + The PR Decoupler exists in the FPGA fabric to isolate one > + region of the FPGA from the busses while that region is > + being reprogrammed during partial reconfig. > + > endif # FPGA > > endmenu > diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile > index 8df07bc..ba94b79 100644 > --- a/drivers/fpga/Makefile > +++ b/drivers/fpga/Makefile > @@ -14,6 +14,7 @@ obj-$(CONFIG_FPGA_MGR_ZYNQ_FPGA) += zynq-fpga.o > obj-$(CONFIG_FPGA_BRIDGE) += fpga-bridge.o > obj-$(CONFIG_SOCFPGA_FPGA_BRIDGE) += altera-hps2fpga.o altera-fpga2sdram.o > obj-$(CONFIG_ALTERA_FREEZE_BRIDGE) += altera-freeze-bridge.o > +obj-$(CONFIG_XILINX_PR_DECOUPLER) += xilinx-pr-decoupler.o > > # High Level Interfaces > obj-$(CONFIG_FPGA_REGION) += fpga-region.o > diff --git a/drivers/fpga/xilinx-pr-decoupler.c b/drivers/fpga/xilinx-pr-decoupler.c > new file mode 100644 > index 0000000..dd37b1c > --- /dev/null > +++ b/drivers/fpga/xilinx-pr-decoupler.c > @@ -0,0 +1,148 @@ > +/* > + * Copyright (c) 2017, National Instruments Corp. > + * Copyright (c) 2017, Xilix Inc > + * > + * FPGA Bridge Driver for the Xilinx LogiCORE Partial Reconfiguration > + * Decoupler IP Core. > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; version 2 of the License. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + */ > + > +#include <linux/clk.h> > +#include <linux/io.h> > +#include <linux/kernel.h> > +#include <linux/of_device.h> > +#include <linux/module.h> > +#include <linux/fpga/fpga-bridge.h> > + > +#define CTRL_CMD_DECOUPLE BIT(0) > +#define CTRL_CMD_COUPLE ~BIT(0) for others - this was reported by 0-day testing system as a warning. M -- 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
