This patchset makes it possible to develop independent driver modules for DFL private features. It also helps to leverage existing kernel drivers to enable some IP blocks in DFL. Patch #1: An improvement of feature id definition. The feature id will be used as the key field for dfl device/driver matching. Patch #2: Release the dfl mmio regions after enumeration, so that private feature drivers could request mmio region in their own drivers. Patch #3: Introduce the dfl bus, then dfl devices could be supported by independent dfl drivers. Patch #4: An example of the dfl driver for N3000 nios private feature. Main changes from v1: - Add the new Patch #1, to improve the feature id definition. - Change the dfl bus uevent format. - Change the dfl device's sysfs name format. - refactor dfl_dev_add() - Add the Patch #4 as an example of the dfl driver. - A lot of minor fixes for comments from Hao and Tom. Xu Yilun (4): fpga: dfl: change data type of feature id to u16 fpga: dfl: map feature mmio resources in their own feature drivers fpga: dfl: create a dfl bus type to support DFL devices fpga: dfl: add support for N3000 nios private feature Documentation/ABI/testing/sysfs-bus-dfl | 15 + .../ABI/testing/sysfs-bus-dfl-devices-n3000-nios | 16 + drivers/fpga/Kconfig | 12 + drivers/fpga/Makefile | 2 + drivers/fpga/dfl-fme-perf.c | 2 +- drivers/fpga/dfl-n3000-nios.c | 483 +++++++++++++++++++++ drivers/fpga/dfl-pci.c | 24 +- drivers/fpga/dfl.c | 464 ++++++++++++++++---- drivers/fpga/dfl.h | 101 ++++- 9 files changed, 1017 insertions(+), 102 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-dfl create mode 100644 Documentation/ABI/testing/sysfs-bus-dfl-devices-n3000-nios create mode 100644 drivers/fpga/dfl-n3000-nios.c -- 2.7.4
