Changes from PATCH v1: ====================== 1. Updated bindings documentation: -- compatibility string for each supported SoC -- removed extcon node -- rename the file name to just iproc-udc.txt 2. Modified comptability strings in platform driver file to reflect the change made in 1. 3 Kconfig -- Resolved warnings shown by kbuild-test-robot <clip: as before> The changes are being submitted as PATCH this time. Below are the details of main changes with respect to previous RFC versions. Changes from RFC v2: =================== Patch 1/6 now splits the driver into amd5536udc_pci_.c (which contains only the PCI device registration part), and amd5536udc.c will still be driver that does the rest of UDC driver functionality. Patch 2/6 renames amd5536udc.c to snps_udc_core.c. The DT compatibilty string is changed to "brcm,iproc-snps-udc" as per review comments for RFCv2. The driver and bindings documentation is modified to reflect this. This is RFC for the changes made as per the review comments made for the previous version. I would like to know if this approach (the way the driver is split and the naming and all)looks good to be submitted. Changes from RFC v1: =================== 1. Split the driver into platform/pci specific drivers with a core driver file that handles the common driver routines that are exported. 2. Split the driver into number of patches as suggested in previous review comments. 3. Added the devicetree bindings documentation for Synopsys platform driver. Introduction from previous version: =================================== This patch adds platform device support to the existing 'amd5536udc' driver. The UDC is based on Synopsys Designware core USB (2.0) Device controller IP. The driver so far supports UDCs that are a part of AMD southbridge and is connected through PCI bus. The same driver can be used with UDCs that are integrated into SoCs like Broadcom's Northstar2/Cygnus platforms by adding platform device suooprt. This patch contains all the changes that were required to get the driver functional on Broadcom's Northstar2 platform. This is a request for comments from maintainers/others regarding approach on whether to have 2 different drivers (one each for AMD and Broadcom) with a common library (3 files in total), or have a single driver like it's done in this patch and have the driver filename changed to some common name based on ther underlying IP, like snps_udc.c. Below are the main changes done: 1. Added OF based platform device registration -- so that the driver gets probed based on the device tree entry. Like wise, remove routine and platform PM ops are supported. 2. Modified debug prints to be compatible with both pci and platform devices. 3. Added members to 'struct udc' in header file for extcon and phy support. This is required if the UDC is connected to a Dual Role Device Phy where the Phy can be configured to be in Device mode or Host mode based on the type of external cable that is connected to the port. 4. Added checks in udc connect/disconnect routines so as to return if the routine is already called. 5. Modified the arguments passed to dma_pool_create routine -- which expects struct device, whereas NULL is passed in the existing version. 6. Kconfig changes are done so that the driver now depends on either of CONFIG_OF or CONFIG_PCI. More description about the Synopsys IP is provided. Repo: https://github.com/Broadcom/arm64-linux.git Branch: snps_udc_v2 Raviteja Garimella (6): UDC: Split the driver into amd (pci) and Synopsys core IP driver UDC: Rename amd5536udc driver file based on IP UDC: make debug prints compatible with both pci and platform devices UDC: Provide correct arguments for 'dma_pool_create' DT bindings documentation for Broadcom IPROC USB Device controller. UDC: Add Synopsys UDC Platform driver .../devicetree/bindings/usb/iproc-udc.txt | 21 + drivers/usb/gadget/udc/Kconfig | 33 + drivers/usb/gadget/udc/Makefile | 4 +- drivers/usb/gadget/udc/amd5536udc.c | 3413 -------------------- drivers/usb/gadget/udc/amd5536udc.h | 54 +- drivers/usb/gadget/udc/amd5536udc_pci.c | 218 ++ drivers/usb/gadget/udc/snps_udc_core.c | 3239 +++++++++++++++++++ drivers/usb/gadget/udc/snps_udc_plat.c | 343 ++ 8 files changed, 3910 insertions(+), 3415 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/iproc-udc.txt delete mode 100644 drivers/usb/gadget/udc/amd5536udc.c create mode 100644 drivers/usb/gadget/udc/amd5536udc_pci.c create mode 100644 drivers/usb/gadget/udc/snps_udc_core.c create mode 100644 drivers/usb/gadget/udc/snps_udc_plat.c -- 2.1.0 -- 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
