[PATCH v8 0/9] Tegra xHCI support

[Andrew Bresticker]

This series adds support for xHCI on NVIDIA Tegra SoCs.  This includes:
 - patches 1, 2, and 3: minor cleanups for mailbox framework and xHCI,
 - patches 4 and 5: adding an MFD driver for the XUSB cmoplex,
 - patches 6 and 7: adding a driver for the mailbox used to communicate
   with the xHCI controller's firmware, and
 - patches 8 and 9: adding a xHCI host-controller driver.

The addition of USB PHY support to the XUSB padctl driver has been dropped.
Thierry will be posting those patches later.

Given the many compile and run-time dependencies in this series, it is probably
best if the first 3 patches are picked up by the relevant maintainers in topic
branches so that the remainder of the series can go through the Tegra tree.

Tested on Jetson TK1 and Nyan-Big with a variety of USB2.0 and USB3.0 memory
sticks and ethernet dongles.  This has also been tested, with additional
out-of-tree patches, on Tegra132 and Tegra210 based boards.

Based on v4.1-rc2.  A branch with the entire series is available at:
  https://github.com/abrestic/linux/tree/tegra-xhci-v8

Cc: Jon Hunter <jonathanh at nvidia.com>

Changes from v7:
 - Move non-shared resources into child nodes of MFD.
 - Fixed a couple of mailbox driver bugs.

Changes from v6:
 - Dropped PHY changes from series.  Will be posted later by Thierry.
 - Added an MFD device with the mailbox and xHCI host as sub-devices.

Changes from v5:
 - Addressed review comments from Jassi and Felipe.

Changes from v4:
 - Made USB support optional in padctl driver.
 - Made usb3-port a pinconfig property again.
 - Cleaned up mbox_request_channel() error handling and allowed it to defer
   probing (patch 3).
 - Minor xHCI (patch 1) and mailbox framework (patch 2) cleanups suggested
   by Thierry.
 - Addressed Thierry's review comments.

Changes from v3:
 - Fixed USB2.0 flakiness on Jetson-TK1.
 - Switched to 32-bit DMA mask for host.
 - Addressed Stephen's review comments.

Chagnes from v2:
 - Dropped mailbox channel specifier.  The mailbox driver allocates virtual
   channels backed by the single physical channel.
 - Added support for HS_CURR_LEVEL adjustment pinconfig property, which
   will be required for the Blaze board.
 - Addressed Stephen's review comments.

Changes from v1:
 - Converted mailbox driver to use the common mailbox framework.
 - Fixed up host driver so that it can now be built and used as a module.
 - Addressed Stephen's review comments.
 - Misc. cleanups.

Andrew Bresticker (8):
  xhci: Set shared HCD's hcd_priv in xhci_gen_setup
  mailbox: Make mbox_chan_ops const
  mfd: Add binding document for NVIDIA Tegra XUSB
  mfd: Add driver for NVIDIA Tegra XUSB
  mailbox: Add NVIDIA Tegra XUSB mailbox binding
  mailbox: Add NVIDIA Tegra XUSB mailbox driver
  usb: Add NVIDIA Tegra xHCI controller binding
  usb: xhci: Add NVIDIA Tegra xHCI host-controller driver

Benson Leung (1):
  mailbox: Fix up error handling in mbox_request_channel()

 .../bindings/mailbox/nvidia,tegra124-xusb-mbox.txt |  32 +
 .../bindings/mfd/nvidia,tegra124-xusb.txt          |  37 +
 .../bindings/usb/nvidia,tegra124-xhci.txt          |  96 +++
 drivers/mailbox/Kconfig                            |   8 +
 drivers/mailbox/Makefile                           |   2 +
 drivers/mailbox/arm_mhu.c                          |   2 +-
 drivers/mailbox/mailbox-altera.c                   |   2 +-
 drivers/mailbox/mailbox.c                          |  11 +-
 drivers/mailbox/omap-mailbox.c                     |   8 +-
 drivers/mailbox/pcc.c                              |   2 +-
 drivers/mailbox/tegra-xusb-mailbox.c               | 290 +++++++
 drivers/mfd/Kconfig                                |   7 +
 drivers/mfd/Makefile                               |   1 +
 drivers/mfd/tegra-xusb.c                           |  75 ++
 drivers/usb/host/Kconfig                           |  10 +
 drivers/usb/host/Makefile                          |   1 +
 drivers/usb/host/xhci-pci.c                        |   5 -
 drivers/usb/host/xhci-plat.c                       |   5 -
 drivers/usb/host/xhci-tegra.c                      | 947 +++++++++++++++++++++
 drivers/usb/host/xhci.c                            |   6 +-
 include/linux/mailbox_controller.h                 |   2 +-
 include/soc/tegra/xusb.h                           |  43 +
 22 files changed, 1568 insertions(+), 24 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt
 create mode 100644 Documentation/devicetree/bindings/mfd/nvidia,tegra124-xusb.txt
 create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt
 create mode 100644 drivers/mailbox/tegra-xusb-mailbox.c
 create mode 100644 drivers/mfd/tegra-xusb.c
 create mode 100644 drivers/usb/host/xhci-tegra.c
 create mode 100644 include/soc/tegra/xusb.h

-- 
2.2.0.rc0.207.ga3a616c