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Sep 2016 18:21:39.1608 (UTC) X-MS-Exchange-CrossTenant-Id: fbd72e03-d4a5-4110-adce-614d51f2077a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=fbd72e03-d4a5-4110-adce-614d51f2077a;Ip=[66.35.236.236];Helo=[sj-itexedge04.altera.priv.altera.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR03MB495 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset support FPGA programming under the control of Device Tree overlays. A few patches that were acked have been left out of the patchset, but continued development has caused this patchset to swell a bit. I'm proposing a minor change to the FPGA Manager API. The change is to substitute the 'flags' paramater with a pointer to a 'struct fpga_image_info'. The reason for this: I'm running into cases where an FPGA image has properties that affect how it is programmed into the FPGA. These properties are specific to the design in the image and would be useful to pass in a struct to the FPGA manager and bridges. The DT overlays support can populate the struct from DT properties in the overlay. The first examples I've run against are that depending on the complexity of the design in an image, the time that a bridge takes to be enabled or disabled can vary. These patches add the timeouts for bridge enable/disable into the device tree overlay and add a FPGA image info struct to the API. Changes to the existing socfpga and zynq driver are tiny; a couple lines each. Other future additions to the FPGA image info struct may include timeout values for the FPGA to go to operating mode after programming and other bridge specifics such as width. Rob suggested that fpga-regions be children of bridges so that is supported here. Since a region may need >1 bridge, a list additional bridges can be added with the fpga-bridges property. I've cleaned up the bindings doc to be correct DT-wise. Hopefully! This patch set includes: * Support fpga-regions being children of fpga-bridges * fixes and rewrites for the FPGA Regions DT binding doc * fpga image info struct support * support the bridges and region built as modules * fix the hps bridges from stomping on each others' use of a shared register. Note that the register has no other bits than those used by the hps bridge driver. * fix a potential race condition in hps bridge driver probe * remove an unneeded pr_err from fpga-region.c * remove some clk_puts - incorrect due to devm_clk_get * add altera freeze bridge The following were acked so they are no longer in this patch set: * bindings for Altera SOCFPGA bridges https://patchwork.kernel.org/patch/9226093/ * bindings for Arria 10 FPGA Mgr https://patchwork.kernel.org/patch/9226111/ * "[PATCH v3] of/overlay: add of overlay notifications" https://lkml.org/lkml/2016/4/19/704 The patchset is dependent on: * Pantelis Antonious's dtc changes for dynamic device tree. https://github.com/pantoniou/dtc.git * Pantelis' configfs interface patches and fixes https://github.com/pantoniou/linux-beagle-track-mainline Alan Alan Tull (12): fpga: add bindings document for fpga region doc: fpga-mgr: add fpga image info to api add bindings document for altera freeze bridge add sysfs document for fpga bridge class fpga-mgr: add fpga image information struct fpga: add fpga image information struct for socfpga support fpga: add fpga image information struct for zynq support fpga: add fpga bridge framework fpga: fpga-region: device tree control for FPGA ARM: socfpga: fpga bridge driver support fpga: add altera freeze bridge support fpga-manager: Add Socfpga Arria10 support Documentation/ABI/testing/sysfs-class-fpga-bridge | 11 + .../bindings/fpga/altera-freeze-bridge.txt | 23 + .../devicetree/bindings/fpga/fpga-region.txt | 494 +++++++++++++++++ Documentation/fpga/fpga-mgr.txt | 32 +- drivers/fpga/Kconfig | 36 ++ drivers/fpga/Makefile | 9 + drivers/fpga/altera-fpga2sdram.c | 180 ++++++ drivers/fpga/altera-freeze-bridge.c | 273 ++++++++++ drivers/fpga/altera-hps2fpga.c | 221 ++++++++ drivers/fpga/fpga-bridge.c | 398 ++++++++++++++ drivers/fpga/fpga-mgr.c | 17 +- drivers/fpga/fpga-region.c | 603 +++++++++++++++++++++ drivers/fpga/socfpga-a10.c | 572 +++++++++++++++++++ drivers/fpga/socfpga.c | 7 +- drivers/fpga/zynq-fpga.c | 10 +- include/linux/fpga/fpga-bridge.h | 60 ++ include/linux/fpga/fpga-mgr.h | 25 +- 17 files changed, 2941 insertions(+), 30 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-class-fpga-bridge create mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt create mode 100644 Documentation/devicetree/bindings/fpga/fpga-region.txt create mode 100644 drivers/fpga/altera-fpga2sdram.c create mode 100644 drivers/fpga/altera-freeze-bridge.c create mode 100644 drivers/fpga/altera-hps2fpga.c create mode 100644 drivers/fpga/fpga-bridge.c create mode 100644 drivers/fpga/fpga-region.c create mode 100644 drivers/fpga/socfpga-a10.c create mode 100644 include/linux/fpga/fpga-bridge.h -- 2.9.3