Add Gen4 specific equalization and rx margining settings. These settings are inline with respective PHY settings for Gen4 operation. In addition, current QCOM EP and RC drivers do not share common codebase which would result in code duplication. Hence, adding common files for code reusability among RC and EP drivers. v1 -> v2: - Capitilized commit message to be inline with history - Dropped stubs from header file. - Moved Designware specific register offsets and masks to pcie-designware.h header file. - Applied settings based on bus data rate rather than link generation. - Addressed review comments from Bjorn and Frank. Shashank Babu Chinta Venkata (3): PCI: qcom: Refactor common code PCI: qcom: Add equalization settings for gen4 PCI: qcom: Add rx margining settings for gen4 drivers/pci/controller/dwc/Kconfig | 5 + drivers/pci/controller/dwc/Makefile | 1 + drivers/pci/controller/dwc/pcie-designware.h | 38 +++++ drivers/pci/controller/dwc/pcie-qcom-cmn.c | 152 +++++++++++++++++++ drivers/pci/controller/dwc/pcie-qcom-cmn.h | 28 ++++ drivers/pci/controller/dwc/pcie-qcom-ep.c | 44 ++---- drivers/pci/controller/dwc/pcie-qcom.c | 72 ++------- 7 files changed, 246 insertions(+), 94 deletions(-) create mode 100644 drivers/pci/controller/dwc/pcie-qcom-cmn.c create mode 100644 drivers/pci/controller/dwc/pcie-qcom-cmn.h -- 2.43.2
