Hi Greg, Here is the latest version of the DWC2 patch set. This version includes changes suggested by Felipe in his review of the HCD code. Only patch #2 has had any substantial changes since last time.
I have also moved the driver to the staging tree, since it doesn't look like it's ready for mainline yet. -- Paul This is a host-mode driver for the Synopsys DesignWare HS OTG controller. This is the same controller whose peripheral mode is implemented by the existing s3c-hsotg driver. This controller is also used in host mode in the Raspberry Pi via a very ugly out-of-tree driver, so merging this would be a step toward bringing USB support for that platform into mainline. The idea is to add a dwc2/ directory alongside the existing dwc3/ directory, initially to contain just this host-mode driver. Once that has been accepted we would then like to move the s3c-hsotg driver into this directory and integrate it to make a dual-role driver. Finally we will implement support for the OTG features of the controller. This driver is still a work in progress, to wit: - Only a PCI bus interface has been implemented so far. However the core code and the PCI bus glue code are contained in separate modules, so it will be easy to add platform driver interfaces in the future. I have already done that with a platform driver for the Raspberry Pi, but it is not included here since USB support for that platform is out of tree. - There is no power-management support yet. - There is quite a bit of debug code included. We would like to keep that until the integration with s3c-hsotg is complete, then most of it can be stripped out. Changes since v6 - Made a fix to the dwc2_hcd_endpoint_disable() function to close a race that Felipe spotted. Refactored some of the HCD code per Felipe's suggestions. Moved driver to the staging tree. Changes since v5 - Made a few minor tweaks in response to Felipe's last review. Also, use usb_calc_bus_time() in place of a private version, and implement the .clear_tt_buffer_complete callback, both at the suggestion of Alan Stern. Fixed a couple of driver crashes that were exposed by those changes. Changes since v4 - Changes in response to Felipe's third review. Also removed the module parameters. Plus made a few more cleanups and simplifications. Changes since v3 - Numerous changes in response to Felipe's second review. Changes since v2 - Fixed a problem with periodic transfers, so hubs, mice and keyboards work reliably now. Fixed a spurious channel halted interrupt by disabling the interrupt if the channel is idle. Changes since v1 - Numerous changes in response to Felipe's review. Paul Zimmerman (6): Core files for the DWC2 driver HCD files for the DWC2 driver HCD descriptor DMA support for the DWC2 driver PCI bus interface for the DWC2 driver Hook the DWC2 driver into the build system Add a MAINTAINERS entry for the DWC2 driver MAINTAINERS | 6 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/dwc2/Kconfig | 41 + drivers/staging/dwc2/Makefile | 23 + drivers/staging/dwc2/core.c | 2678 ++++++++++++++++++++++++++++++++++ drivers/staging/dwc2/core.h | 658 +++++++++ drivers/staging/dwc2/core_intr.c | 505 +++++++ drivers/staging/dwc2/hcd.c | 2951 ++++++++++++++++++++++++++++++++++++++ drivers/staging/dwc2/hcd.h | 737 ++++++++++ drivers/staging/dwc2/hcd_ddma.c | 1196 +++++++++++++++ drivers/staging/dwc2/hcd_intr.c | 2079 +++++++++++++++++++++++++++ drivers/staging/dwc2/hcd_queue.c | 675 +++++++++ drivers/staging/dwc2/hw.h | 811 +++++++++++ drivers/staging/dwc2/pci.c | 198 +++ 15 files changed, 12561 insertions(+) create mode 100644 drivers/staging/dwc2/Kconfig create mode 100644 drivers/staging/dwc2/Makefile create mode 100644 drivers/staging/dwc2/core.c create mode 100644 drivers/staging/dwc2/core.h create mode 100644 drivers/staging/dwc2/core_intr.c create mode 100644 drivers/staging/dwc2/hcd.c create mode 100644 drivers/staging/dwc2/hcd.h create mode 100644 drivers/staging/dwc2/hcd_ddma.c create mode 100644 drivers/staging/dwc2/hcd_intr.c create mode 100644 drivers/staging/dwc2/hcd_queue.c create mode 100644 drivers/staging/dwc2/hw.h create mode 100644 drivers/staging/dwc2/pci.c -- 1.8.2.rc0.16.g20a599e -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
