On Tue, Jan 19, 2021 at 06:10:40PM +0800, Howard Yen wrote:

To let the xhci driver support USB offload, add hooks for vendor to have
customized behavior for the initialization, memory allocation, irq work, and 
device context synchronization. Detail is in each patch commit message.

Howard Yen (4):
  usb: host: add xhci hooks for USB offload
  usb: host: export symbols for xhci hooks usage
  usb: xhci-plat: add xhci_plat_priv_overwrite
  dt-bindings: usb: usb-xhci: add USB offload support

 .../devicetree/bindings/usb/usb-xhci.txt      |  1 +
 drivers/usb/host/xhci-hub.c                   |  5 +
 drivers/usb/host/xhci-mem.c                   | 99 ++++++++++++++++---
 drivers/usb/host/xhci-plat.c                  | 45 ++++++++-
 drivers/usb/host/xhci-plat.h                  |  9 ++
 drivers/usb/host/xhci-ring.c                  | 19 +++-
 drivers/usb/host/xhci.c                       | 89 +++++++++++++++++
 drivers/usb/host/xhci.h                       | 38 +++++++
 8 files changed, 289 insertions(+), 16 deletions(-)

Thanks so much for posting this.

A bit of background for the lists.  I helped review previous versions of
this patchset from Howard as he worked to convert the hacks from a
previous vendor into something that would be semi-sane.  It would be
great if we can take the previously-submitted Samsung usb-audio hooks
(as published in their kernel sources for their last-year phones) and
get it into something mergable with this scheme as well, as this is the
"correct" way to do what they were wanting to do.

Although I know that is outside of the work you probably have time for,
maybe I will work on that over the next few weeks...

thanks,

greg k-h