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Expose Cadence USBSSP through the same platform path as USBSS, trim Kconfig and Makefile: one core loadable object plus separate glue .ko files. Single cdns.ko bundles core, DRD, the generic "cdns,usb3" platform driver in cdns3-plat.c, optional host.o, and optional gadget objects. Use CONFIG_USB_CDNS3_GADGET as a bool to compile gadget support into that module. Remove duplicate MODULE_* declarations from cdns3-plat.c now that it links into the same module. Kconfig: the generic platform driver is selected via CONFIG_USB_CDNS3. Move CONFIG_USB_CDNSP_PCI beside CONFIG_USB_CDNS3_PCI_WRAP under "Platform glue driver support". SoC glue entries (TI, i.MX, StarFive) depend only on CONFIG_USB_CDNS3. Tighten CONFIG_USB_CDNS_SUPPORT dependencies so the umbrella follows host or gadget when either is built as a module. Match host and gadget bools to the cdns.ko tristate with USB=USB_CDNS3 and USB_GADGET=USB_CDNS3 instead of comparing against USB_CDNS_SUPPORT. Link host.o when CONFIG_USB_CDNS3_HOST is enabled and use that symbol in host-export.h, removing the redundant CONFIG_USB_CDNS_HOST indirection. Export cdns_core_init_role and reorganize the function cdns_init, and controller version could be gotten before the gadget init function is decided per controller. Keep host_init / gadget_init callbacks in struct cdns, so core.c does not need direct linkage to host or gadget objects. Refactor cdnsp-pci.c into a thin PCI-to-platform wrapper. drivers/usb/Makefile: descend into drivers/usb/cdns3/ only when CONFIG_USB_CDNS_SUPPORT is enabled. Assisted-by: Cursor:claude-4.6-opus Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Peter Chen <peter.chen@cixtech.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Link: https://patch.msgid.link/20260421023459.506145-3-peter.chen@cixtech.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
116 lines
3.5 KiB
Plaintext
116 lines
3.5 KiB
Plaintext
config USB_CDNS_SUPPORT
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tristate "Cadence USB Support"
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depends on USB_SUPPORT && HAS_DMA
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depends on USB || USB_GADGET
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depends on USB if !USB_GADGET
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depends on USB_GADGET if !USB
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select USB_XHCI_PLATFORM if USB_XHCI_HCD
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select USB_ROLE_SWITCH
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help
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Say Y here if your system has a Cadence USBSS or USBSSP
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dual-role controller.
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It supports: dual-role switch, Host-only, and Peripheral-only.
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if USB_CDNS_SUPPORT
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config USB_CDNS3
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tristate "Cadence USB dual-role controller (USBSS and USBSSP)"
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depends on USB_CDNS_SUPPORT
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help
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Say Y or M here if your system has an on-chip Cadence USB
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dual-role controller. This covers both USBSS (USB 3.0) and
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USBSSP (SuperSpeed Plus) IP; the driver detects the variant at
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runtime.
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The core driver (core, DRD, generic platform binding for the
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"cdns,usb3" device tree compatible, optional host and gadget)
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builds as one module named cdns.ko when built as a loadable
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module.
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It supports: dual-role switch, Host-only, and Peripheral-only.
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if USB_CDNS3
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config USB_CDNS3_HOST
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bool "Cadence USB host controller (xHCI)"
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depends on USB=y || USB=USB_CDNS3
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help
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Say Y here to enable host controller functionality for Cadence
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USBSS and USBSSP dual-role controllers.
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The host controller is xHCI compliant and uses the standard
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xHCI driver.
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config USB_CDNS3_GADGET
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bool "Cadence USB device controller (USBSS and USBSSP)"
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depends on USB_GADGET=y || USB_GADGET=USB_CDNS3
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help
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Say Y here to include Cadence USB device (gadget) support for
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both USBSS (USB 3.0) and USBSSP (SuperSpeed Plus) IP in the
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cdns.ko module. The implementation is selected at runtime from
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the detected controller version.
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USBSS gadget supports FF, HS and SS mode (not LS or SSP).
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USBSSP gadget supports FF, HS, SS and SSP mode (not LS).
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comment "Platform glue driver support"
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config USB_CDNS3_PCI_WRAP
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tristate "Cadence USB3 support on PCIe-based platforms"
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depends on USB_PCI && ACPI
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default USB_CDNS3
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help
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If you're using the USBSS Core IP with a PCIe, please say
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'Y' or 'M' here.
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If you choose to build this driver as module it will
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be dynamically linked and module will be called cdns3-pci.ko
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config USB_CDNSP_PCI
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tristate "Cadence USBSSP support on PCIe-based platforms"
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depends on USB_PCI && ACPI
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default USB_CDNS3
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help
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If you're using the USBSSP Core IP with a PCIe, please say
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'Y' or 'M' here.
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If you choose to build this driver as module it will
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be dynamically linked and module will be called cdnsp-pci.ko
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config USB_CDNS3_TI
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tristate "Cadence USB3 support on TI platforms"
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depends on ARCH_K3 || COMPILE_TEST
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default USB_CDNS3
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help
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Say 'Y' or 'M' here if you are building for Texas Instruments
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platforms that contain Cadence USB3 controller core.
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e.g. J721e.
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config USB_CDNS3_IMX
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tristate "Cadence USB3 support on NXP i.MX platforms"
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depends on ARCH_MXC || COMPILE_TEST
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default USB_CDNS3
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help
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Say 'Y' or 'M' here if you are building for NXP i.MX
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platforms that contain Cadence USB3 controller core.
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For example, imx8qm and imx8qxp.
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config USB_CDNS3_STARFIVE
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tristate "Cadence USB3 support on StarFive SoC platforms"
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depends on ARCH_STARFIVE || COMPILE_TEST
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default USB_CDNS3
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help
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Say 'Y' or 'M' here if you are building for StarFive SoCs
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platforms that contain Cadence USB3 controller core.
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e.g. JH7110.
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If you choose to build this driver as module it will
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be dynamically linked and module will be called cdns3-starfive.ko
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endif # USB_CDNS3
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endif # USB_CDNS_SUPPORT
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