[PATCH RFT v2 0/4] pci: add common Designware PCIe functions and support Amlogic Meson PCIe controller

[Neil Armstrong]

With the introduction of pcie_dw_rockchip, and need to support the DW PCIe in the
Amlogic AXG & G12 SoCs, most of the DW PCIe helpers would be duplicated.

This introduce a "common" DW PCIe helpers file with common code merged from the
dw_ti and dw_rockchip drivers and adapted to fit with the upcoming dw_meson.

The following changes will switch the dw_ti and dw_rockchip, and introduce a new
driver to support the Amlogic AXG & G12 SoCs using these new common helpers.

The dw_meson has been validated, but the dw_ti and dw_rockchip would need testing
on hardware to validate nothing has been broken.

Changes since v1:
- added prefetch memory region support
- switched to __iomem
- fixed circular dependency for PCI_KEYSTONE

Neil Armstrong (4):
  pci: add common Designware PCIe functions
  pci: pcie_dw_ti: migrate to common Designware PCIe functions
  pci: pcie_dw_rockchip: migrate to common Designware PCIe functions
  pci: add Amlogic Meson Designware PCIe controller

 drivers/pci/Kconfig            |  16 +-
 drivers/pci/Makefile           |   2 +
 drivers/pci/pcie_dw_common.c   | 366 +++++++++++++++++++++++++
 drivers/pci/pcie_dw_common.h   | 155 +++++++++++
 drivers/pci/pcie_dw_meson.c    | 459 ++++++++++++++++++++++++++++++++
 drivers/pci/pcie_dw_rockchip.c | 472 ++-------------------------------
 drivers/pci/pcie_dw_ti.c       | 444 +++----------------------------
 7 files changed, 1062 insertions(+), 852 deletions(-)
 create mode 100644 drivers/pci/pcie_dw_common.c
 create mode 100644 drivers/pci/pcie_dw_common.h
 create mode 100644 drivers/pci/pcie_dw_meson.c

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2.25.1