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From:   Pawel Laszczak <pawell@cadence.com>
To:     <gregkh@linuxfoundation.org>, <linux-usb@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <balbi@kernel.org>
CC:     <colin.king@canonical.com>, <rogerq@ti.com>, <peter.chen@nxp.com>,
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        <heikki.krogerus@linux.intel.com>, <chunfeng.yun@mediatek.com>,
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Subject: [PATCH 0/8] Introduced new Cadence USBSSP DRD Driver.
Date:   Mon, 28 Sep 2020 14:27:33 +0200
Message-ID: <20200928122741.17884-1-pawell@cadence.com>
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This patch introduce new Cadence USBSS DRD driver to linux kernel.

The Cadence USBSS DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role Device (DRD), Peripheral Only and
Host Only (XHCI)configurations.

The current driver has been validated with FPGA burned. We have support
for PCIe bus, which is used on FPGA prototyping.

The host side of USBSS-DRD controller is compliance with XHCI
specification, so it works with standard XHCI Linux driver.

The host side of USBSS DRD controller is compliant with XHCI.
The architecture for device side is almost the same as for host side,
and most of the XHCI specification can be used to understand how
this controller operates.

This controller and driver support Full Speed, Hight Speed, Supper Speed
and Supper Speed Plus USB protocol.

The prefix cdnsp used in driver has chosen by analogy to cdn3 driver.
The last letter of this acronym means PLUS. The formal name of controller
is USBSSP but it's to generic so I've decided to use CDNSP.

The patch 1: adds support for DRD CDNSP. 
The patch 2: separates common code that can be reusable by cdnsp driver.
The patch 3: moves reusable code to separate module.
The patch 4: changes prefixes in reusable code frome cdns3 to common cdns.
The patch 5: adopts gadget_dev pointer in cdns structure to make possible 
	     use it in both drivers.
The patches 6-8: add the main part of driver and has been intentionally
             split into 3 part. In my opinion such division should not
             affect understanding and reviewing the driver, and cause that
             main patch (7/8) is little smaller. Patch 6 introduces main
             header file for driver, 7 is the main part that implements all
             functionality of driver and 8 introduces tracepoints.

---

Pawel Laszczak (7):
  usb: cdns3: Add support for DRD CDNSP
  usb: cdns3: Split core.c into cdns3-plat and core.c file
  usb: cdns3: Moves reusable code to separate module
  usb: cdns3: Refactoring names in reusable code
  usb: cdns3: Changed type of gadget_dev in cdns structure
  usb: cdnsp: Device side header file for CDNSP driver
  usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver
  usb: cdnsp: Add tracepoints for CDNSP driver

 drivers/usb/Kconfig               |    1 +
 drivers/usb/Makefile              |    1 +
 drivers/usb/cdns3/Kconfig         |    8 +
 drivers/usb/cdns3/Makefile        |    8 +-
 drivers/usb/cdns3/cdns3-plat.c    |  209 +++
 drivers/usb/cdns3/core.c          |  336 ++--
 drivers/usb/cdns3/core.h          |   51 +-
 drivers/usb/cdns3/drd.c           |  219 ++-
 drivers/usb/cdns3/drd.h           |   93 +-
 drivers/usb/cdns3/gadget-export.h |   26 +-
 drivers/usb/cdns3/gadget.c        |   29 +-
 drivers/usb/cdns3/host-export.h   |   10 +-
 drivers/usb/cdns3/host.c          |   23 +-
 drivers/usb/cdnsp/Kconfig         |   40 +
 drivers/usb/cdnsp/Makefile        |   12 +
 drivers/usb/cdnsp/cdnsp-pci.c     |  247 +++
 drivers/usb/cdnsp/debug.h         |  583 +++++++
 drivers/usb/cdnsp/ep0.c           |  500 ++++++
 drivers/usb/cdnsp/gadget.c        | 2009 ++++++++++++++++++++++++
 drivers/usb/cdnsp/gadget.h        | 1598 +++++++++++++++++++
 drivers/usb/cdnsp/mem.c           | 1326 ++++++++++++++++
 drivers/usb/cdnsp/ring.c          | 2426 +++++++++++++++++++++++++++++
 drivers/usb/cdnsp/trace.c         |   12 +
 drivers/usb/cdnsp/trace.h         |  840 ++++++++++
 24 files changed, 10228 insertions(+), 379 deletions(-)
 create mode 100644 drivers/usb/cdns3/cdns3-plat.c
 create mode 100644 drivers/usb/cdnsp/Kconfig
 create mode 100644 drivers/usb/cdnsp/Makefile
 create mode 100644 drivers/usb/cdnsp/cdnsp-pci.c
 create mode 100644 drivers/usb/cdnsp/debug.h
 create mode 100644 drivers/usb/cdnsp/ep0.c
 create mode 100644 drivers/usb/cdnsp/gadget.c
 create mode 100644 drivers/usb/cdnsp/gadget.h
 create mode 100644 drivers/usb/cdnsp/mem.c
 create mode 100644 drivers/usb/cdnsp/ring.c
 create mode 100644 drivers/usb/cdnsp/trace.c
 create mode 100644 drivers/usb/cdnsp/trace.h

-- 
2.17.1