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Subject[PATCH v4 0/5] Add support for Fujitsu USB host controller
These patches add support for XHCI compliant Host controller found
on Fujitsu Socs, and are based on
The first patch is to add Fujitsu glue layer of Synopsis DesignWare USB3 driver
and last four patch is about quirk implementation of errata in Synopsis
DesignWare USB3 IP.

Patch 1 introduces a quirk with device disconnection management necessary
Synopsys Designware USB3 IP with versions < 3.00a and hardware configuration
DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1. It solves a problem where without the
quirk, that host controller will die after a usb device is disconnected from
port of root hub.

Patch 2 is to set Synopsis quirk in xhci platform driver based on xhci platform

Patch 3 is to add a revison number 2.90a and 3.00a of Synopsis DesignWare USB3
IP core driver.

Patch 4 introduces using a quirk based on a errata of Synopsis
DesignWare USB3 IP which is versions < 3.00a and has hardware configuration
DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1, which cannot be read from software. As a
result this quirk has to be enabled via platform data or device tree.

Patch 5 introduces Fujitsu Specific Glue layer in Synopsis DesignWare USB3 IP

Successfully tested on Fujitsu mb86s7x board.

Changes since v3 (RFC):
- based on Mathias's comment, fix bug and using xhci_port_state_to_neutral()
helper function to mask out some RW1C bits, prevent writing back all the
bits read from the PORTSC register.

Changes since v2 (RFC):
- based on Felipe's comment, re-order patches to avoid breaking bisectability,
- based on Felipe's comment, add comment to structure's member, and sort it
- based on Felipe's comment, add another v2.90 revision number in dwc3 IP.

Changes since v1 (RFC):
- based on Arnd's comment, remove entire unnecessary Fujitsu EHCI/OHCI glue,
- based on Felipe's comment, fix mis-using of runtime-pm API and setting dma
mask, remove unnecessary comment, and refactor suspend/resume handler in
Fujitsu Specific Glue layer in dwc3,
- based on Felipe's comment, add more commit log and comments in Synopsis
quirk implementation, and separate it into four patches.

Sneeker Yeh (5):
xhci: add a quirk for device disconnection errata for Synopsis
Designware USB3 core
xhci: Platform: Set Synopsis device disconnection quirk based on
platform data
usb: dwc3: add revision number DWC3_REVISION_290A and
usb: dwc3: Add quirk for Synopsis device disconnection errata
usb: dwc3: add Fujitsu Specific Glue layer

Documentation/devicetree/bindings/usb/dwc3.txt | 17 ++
.../devicetree/bindings/usb/fujitsu-dwc3.txt | 33 ++++
drivers/usb/dwc3/Kconfig | 11 ++
drivers/usb/dwc3/Makefile | 1 +
drivers/usb/dwc3/core.c | 6 +
drivers/usb/dwc3/core.h | 6 +
drivers/usb/dwc3/dwc3-mb86s70.c | 206 ++++++++++++++++++++
drivers/usb/dwc3/host.c | 4 +
drivers/usb/dwc3/platform_data.h | 8 +
drivers/usb/host/xhci-hub.c | 4 +
drivers/usb/host/xhci-plat.c | 3 +
drivers/usb/host/xhci.c | 31 +++
drivers/usb/host/xhci.h | 24 +++
include/linux/usb/xhci_pdriver.h | 4 +
14 files changed, 358 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/fujitsu-dwc3.txt
create mode 100644 drivers/usb/dwc3/dwc3-mb86s70.c


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