[U-Boot] [PATCH v4 00/10] Improvements for the dwc3_generic driver

[Jean-Jacques Hiblot]

This series aims at bringing improvements to the dwc3_generic driver so
that it can be used by most of the platforms using the dwc3 controller.

I tested this on with DRA7 and AM57x platforms for both Peripheral and Host
operations. The code to enable DM USB host & dev support for those
platforms will be submitted in a separate series.

Michal Simek has tested this series:
" I have tested it on zcu100 with usb stick, usb to ethernet converter and
also dfu.
Tested-by: Michal Simek <michal.simek at xilinx.com>"

Enhancements:
- use separate Kconfig option for DM USB Periphal and DM USB Host. This
allow platforms to keep their non-DM USB peripheral code and use the DM
USB host.
- fixes the bind/probe confusion in dwc3_generic. The probe is done when
the USB device is first needed.
- handles PHYs when in the peripheral mode. The code to handle the PHYs is
shared with the host side
- handles clock and reset
- bind host controller to the more generic driver 'xhci-dwc3'


Changes in v4:
- rebased on latest U-Boot
- renamed DM_USB_DEV as DM_USB_GADGET
- Add a new commit to create a new UCLASS for USB gadget drivers

Changes in v3:
- fixes bug dwc3_setup_phy(): the phy arrays wasn't returned. This was
  visible only when the device is removed.
- Stub the DWC3 PHY operations if CONFIG_IS_ENABLED(PHY) is false.
  This fixes all build issues but one (evb-rk3328).
- Fix build issue with evb-rk3328 by enabling CONFIG_USB_DWC3. This has
  little impact on the footprint and should not break the runtime as the
  xhci-rockchip driver has its own probe function.
  Nevertheless this was !!! NOT TESTED !!! by lack of hw

Changes in v2:
- Updated commit log
- Fixed typo in thordown.c
- select DM_USB_DEV by default for zynqmp platforms

Jean-Jacques Hiblot (10):
  usb: gadget: Do not call board_usb_xxx() directly in USB gadget
    drivers
  usb: introduce a separate config option for DM USB device
  usb: udc: implement DM versions of
    usb_gadget_initialize()/_release()/_handle_interrupt()
  dwc3_generic: do not probe the USB device driver when it's bound
  dwc3: move phy operation to core.c
  dm: usb: create a new UCLASS ID for USB gadget devices
  configs: evb-rk3328: Enable CONFIG_USB_DWC3
  dwc3-generic: Handle the PHYs, the clocks and the reset lines
  dwc3-generic: Add select_dr_mode operation
  usb: dwc3: Fix a compilation error with the edison defconfig

 arch/arm/Kconfig                    |   2 +
 board/sunxi/board.c                 |   2 +-
 cmd/fastboot.c                      |   4 +-
 cmd/rockusb.c                       |   4 +-
 cmd/thordown.c                      |   4 +-
 cmd/usb_gadget_sdp.c                |   4 +-
 cmd/usb_mass_storage.c              |   4 +-
 common/dfu.c                        |   6 +-
 configs/evb-rk3328_defconfig        |   1 +
 drivers/usb/Kconfig                 |  14 +++
 drivers/usb/dwc3/Kconfig            |   7 +-
 drivers/usb/dwc3/core.c             |  89 ++++++++++++++-
 drivers/usb/dwc3/dwc3-generic.c     | 208 ++++++++++++++++++++++++++++--------
 drivers/usb/dwc3/ep0.c              |   2 +-
 drivers/usb/gadget/ether.c          |  40 ++-----
 drivers/usb/gadget/udc/Makefile     |   4 +
 drivers/usb/gadget/udc/udc-core.c   |   3 +-
 drivers/usb/gadget/udc/udc-uclass.c |  58 ++++++++++
 drivers/usb/host/xhci-dwc3.c        |  95 ++--------------
 drivers/usb/musb-new/omap2430.c     |   2 +-
 drivers/usb/musb-new/sunxi.c        |   2 +-
 include/dm/uclass-id.h              |   1 +
 include/dwc3-uboot.h                |  19 ++++
 include/linux/usb/gadget.h          |  18 ++++
 24 files changed, 401 insertions(+), 192 deletions(-)
 create mode 100644 drivers/usb/gadget/udc/udc-uclass.c

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2.7.4