This patch has the goal to add support for DesignWare UFS Controller
specific operations and to add specific platform and pci drivers.

Signed-off-by: Joao Pinto <redacted>
---
Changes v7->v8 (Akinobu Mita):
- DME sets were simplified for easier reading
- CLK DIV default values definitions names were changed to match the
 register's name
- New line added to dev_err and dev_info statements
Changes v6->v7 (Arnd Bergmann):
- Changed DT node name (to ufs only) and the memory address (to 0xd000000)
- Removed CONFIG_PM from the PCI glue driver (pm.h already does this)
- No other changes are necessary in ufshcd.c because of the link up notify
 function usage (it is simpler now)
- Removed the PHY mentioning since the Test Chip is not a real PHY for real
 world usage, since it is a test chip for prototyping with a very specific
 usage
- Added again the Test Chip 20-bit option
Changes v5->v6:
- Patch bad format fixed
Changes v4->v5 (Akinobu Mita):
- All functions used only locally in ufshcd-dwc are now declared as static
- ufshcd_dwc_configuration() was removed in ufshcd-dwc and a notify
 function (ufshcd_dwc_link_startup_notify) was created to deal with the
 DWC specific init routines
- 20-bit RMMI option was removed from Kconfig. Now if MPHY TC is selected
 and 40-bit is not then it assumes a 20-bit config
Changes v3->v4 (Arnd Bergmann and Mark Rutland):
- SCSI_UFS_DWC_HOOKS is now silent and selected by the SCSI_UFS_DWC_PLAT
 or SCSI_UFS_DWC_PCI
- Compatibility string has the ufs core version for info purposes since
 the driver is capable of getting the controller version from its 
 registers
- Created ufs-dwc-pci glue driver with specific DWC data
- MPHY configuration remains in the ufshcd-dwc since it is unipro
 attribute writting only not following the a linux phy framework logic
Changes v2->v3 (Julian Calaby):
- Implement a common DWC code to be used by the platform and pci glue
 drivers
- Synopsys ID & Class added to the existing pci driver and specific DWC
 was also added to the pci driver
Changes v1->v2 (Akinobu Mita):
- Implement a platform driver that uses the existing UFS core driver
- Add DWC specific code to the existing UFS core driver

 Documentation/devicetree/bindings/ufs/ufs-dwc.txt |  19 +
 MAINTAINERS                                       |   6 +
 drivers/scsi/ufs/Kconfig                          |  51 +++
 drivers/scsi/ufs/Makefile                         |   3 +
 drivers/scsi/ufs/ufs-dwc-pci.c                    | 172 +++++++++
 drivers/scsi/ufs/ufs-dwc.c                        |  96 +++++
 drivers/scsi/ufs/ufshcd-dwc.c                     | 431 ++++++++++++++++++++++
 drivers/scsi/ufs/ufshcd-dwc.h                     |  18 +
 drivers/scsi/ufs/ufshci-dwc.h                     |  42 +++
 drivers/scsi/ufs/unipro.h                         |  39 ++
 10 files changed, 877 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ufs/ufs-dwc.txt
 create mode 100644 drivers/scsi/ufs/ufs-dwc-pci.c
 create mode 100644 drivers/scsi/ufs/ufs-dwc.c
 create mode 100644 drivers/scsi/ufs/ufshcd-dwc.c
 create mode 100644 drivers/scsi/ufs/ufshcd-dwc.h
 create mode 100644 drivers/scsi/ufs/ufshci-dwc.h

diff --git a/Documentation/devicetree/bindings/ufs/ufs-dwc.txt b/Documentation/devicetree/bindings/ufs/ufs-dwc.txt
new file mode 100644
index 0000000..59e9822
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/ufs-dwc.txt

@@ -0,0 +1,19 @@
+* Universal Flash Storage (UFS) DesignWare Host Controller
+
+DWC_UFSHC nodes are defined to describe on-chip UFS host controllers.
+Each UFS controller instance should have its own node.
+
+Required properties:
+- compatible        : compatible list must contain "snps,ufshcd-dwc" and should
+		      also contain the JEDEC version of the controller:
+			"jedec,ufs-1.1"
+			"jedec,ufs-2.0"