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[v9,0/8] PCI: rcar-gen4: Add R-Car Gen4 PCIe support

Message ID 20230210134917.2909314-1-yoshihiro.shimoda.uh@renesas.com
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Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Message

Yoshihiro Shimoda Feb. 10, 2023, 1:49 p.m. UTC 
Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.

Changes from v8:
https://lore.kernel.org/all/20230131095543.1831875-1-yoshihiro.shimoda.uh@renesas.com/
 - Based on next-20230210.
 - Missing dt-bindings patches accidentally.

Changes from v7:
https://lore.kernel.org/all/20221121124400.1282768-1-yoshihiro.shimoda.uh@renesas.com/
 - Based on next-20230131.
 - Update Copyright year of new files.
 - Add a new capability flag (DW_PCIE_CAP_EDMA_UNROLL) for finding eDMA on
   R-Car S4-8.
 - Remove some PCIe configurations like L1 substates from pcie-rcar-gen4-host.c.
 - Change timing of reset_control for suitable this hardware initialization.
 - Add gpio reset handling for host mode.
 - Capitalize the first charactors on each printk message.

Yoshihiro Shimoda (8):
  dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host
  dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint
  PCI: Add PCI_EXP_LNKCAP_MLW macros
  PCI: designware-ep: Expose dw_pcie_ep_exit() to module
  PCI: dwc: Add support for triggering legacy IRQs
  PCI: rcar-gen4: Add R-Car Gen4 PCIe Host support
  PCI: rcar-gen4-ep: Add R-Car Gen4 PCIe Endpoint support
  MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4

 .../bindings/pci/rcar-gen4-pci-ep.yaml        |  90 +++++++++
 .../bindings/pci/rcar-gen4-pci-host.yaml      |  90 +++++++++
 MAINTAINERS                                   |   1 +
 drivers/pci/controller/dwc/Kconfig            |  18 ++
 drivers/pci/controller/dwc/Makefile           |   4 +
 .../pci/controller/dwc/pcie-designware-ep.c   |  70 ++++++-
 .../pci/controller/dwc/pcie-designware-host.c |   3 +
 drivers/pci/controller/dwc/pcie-designware.c  |  33 +++-
 drivers/pci/controller/dwc/pcie-designware.h  |  19 +-
 .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 185 ++++++++++++++++++
 .../pci/controller/dwc/pcie-rcar-gen4-host.c  | 165 ++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 166 ++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.h   |  63 ++++++
 include/uapi/linux/pci_regs.h                 |   6 +
 14 files changed, 894 insertions(+), 19 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
 create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
 create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-host.c
 create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.c
 create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.h