[PATCH 0/2] PCI: dwc: Clean up DWC PCIe register macros

[Hans Zhang]

This series cleans up the DWC PCIe controller register macros to better
match the Synopsys DesignWare PCIe Controller Reference Manual, and
removes an unused set of iATU unroll register definitions.

Patch 1 renames various register and field macros, dropping redundant
PCIE_ prefixes and using documented base names.  Field macros are
renamed consistently so their register association is clear.  No
functional change intended.

Patch 2 removes the unused PCIE_ATU_UNR_* macros.  These have no
remaining users now that the driver uses the ATU_* macros and
ATU_UNROLL_BASE() for unrolled iATU register access.

The series was build-tested with defconfig and allmodconfig.

---
Changes in v2:
- Rename Port Link Control register to PORT_LINK_CTRL instead of
  PORT_LINK_CTRL_OFF, as suggested by Bjorn.  The _OFF suffix is
  ambiguous and unnecessary.
- Extend the cleanup to more DWC PCIe register macros, dropping the
  redundant PCIE_ prefix and using documented base names, such as
  PORT_FORCE_LINK, PORT_AFAC, PORT_LANE_SKEW, TIMER_CTRL_MAX_FUNC_NUM,
  PORT_LINK_DEBUG0/1, LINK_WIDTH_SPEED_CTRL, GEN3_CTRL, GEN3_EQ_CTRL,
  MULTI_LANE_CTRL, MISC_CONTROL_1, MSIX_DOORBELL, and the ATU_*
  registers.
- Include the register name in field macros, e.g. PORT_LINK_CTRL_DLE,
  PORT_LINK_CTRL_FLM, PORT_LINK_CTRL_LC_*.
- Fix PORT_AFAC L1 field names (PORT_AFAC_L1_*).
- Unify COHERENCY_CTRL1/2/3 and RAS_DES_EVENT_COUNTER_* naming.
- Drop the _OFF suffix from MISC_CONTROL_1.
- Add a patch to remove unused PCIE_ATU_UNR_* definitions.

v1:
https://patchwork.kernel.org/project/linux-pci/patch/20260904061823.592216-1-18255117159@163.com/
---

Hans Zhang (2):
  PCI: dwc: Align register macros with Synopsys documentation
  PCI: dwc: Remove unused PCIE_ATU_UNR_* register definitions

 drivers/pci/controller/dwc/pci-imx6.c         |  26 +-
 drivers/pci/controller/dwc/pci-keystone.c     |   4 +-
 .../pci/controller/dwc/pcie-designware-ep.c   |  10 +-
 .../pci/controller/dwc/pcie-designware-host.c |  18 +-
 drivers/pci/controller/dwc/pcie-designware.c  | 176 +++++------
 drivers/pci/controller/dwc/pcie-designware.h  | 275 +++++++++---------
 drivers/pci/controller/dwc/pcie-fu740.c       |   6 +-
 drivers/pci/controller/dwc/pcie-nxp-s32g.c    |  18 +-
 drivers/pci/controller/dwc/pcie-qcom-common.c |  28 +-
 drivers/pci/controller/dwc/pcie-qcom.c        |   6 +-
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   |  26 +-
 .../pci/controller/dwc/pcie-tegra194-acpi.c   |  22 +-
 drivers/pci/controller/dwc/pcie-tegra194.c    |  86 +++---
 drivers/pci/controller/dwc/pcie-ultrarisc.c   |  10 +-
 14 files changed, 349 insertions(+), 362 deletions(-)


base-commit: 08df884136f1c1197bab2a27814404fd329d9aac
-- 
2.34.1