2015-03-11 5:30 GMT+08:00 Felipe Balbi [off-list ref]:

On Sun, Feb 22, 2015 at 12:25:35PM +0800, Sneeker Yeh wrote:

quoted

These patches add support for XHCI compliant Host controller found
on Fujitsu Socs, and are based on http://lwn.net/Articles/629162/
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
data.

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
driver.

Successfully tested on Fujitsu mb86s7x board.

Changes since v4 (RFC):
[https://lkml.org/lkml/2015/2/17/13]
 - based on Felipe's comment, rename dwc3-mb86s70.c to dwc3-fujitsu.c which is
   more generic.
 - based on Mathias's comment, remove unhelpful comment, and change the
   function name of xhci_try_to_clear_csc() to xhci_late_csc_clear_quirk()
   which is more appropriate.

Changes since v3 (RFC):
[https://lkml.org/lkml/2015/1/25/8]
 - 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):
[https://lkml.org/lkml/2015/1/19/55]
 - 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
   alphabetically,
 - based on Felipe's comment, add another v2.90 revision number in dwc3 IP.

Changes since v1 (RFC):
[https://lkml.org/lkml/2014/12/15/929]
 - 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
    DWC3_REVISION_300A
  usb: dwc3: Add quirk for Synopsis device disconnection errata
  usb: dwc3: add Fujitsu Specific Glue layer

Mathias, if you want me to take this series I need your Acked-by,
otherwise I can give you mine, just let me know.

Hi Mathias, I hope I'm not imposing here,
but would you let me know if there's any further comment for the patchset.

Much appreciate,
Sneeker

--
balbi

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