linux-stable.git/drivers/usb/cdns3/Makefile, branch master

usb: cdns3: Add USBSSP platform driver support

2026-04-27T11:14:18+00:00

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 
Signed-off-by: Peter Chen 
Reviewed-by: Arnd Bergmann 
Link: https://patch.msgid.link/20260421023459.506145-3-peter.chen@cixtech.com
Signed-off-by: Greg Kroah-Hartman

usb: cdns3: Add StarFive JH7110 USB driver

2023-05-29T14:52:11+00:00

Adds Specific Glue layer to support USB peripherals on
StarFive JH7110 SoC.
There is a Cadence USB3 core for JH7110 SoCs, the cdns
core is the child of this USB wrapper module device.

Signed-off-by: Minda Chen 
Acked-by: Peter Chen 
Reviewed-by: Roger Quadros 
Link: https://lore.kernel.org/r/20230518112750.57924-7-minda.chen@starfivetech.com
Signed-off-by: Greg Kroah-Hartman

usb: cdnsp: fixes undefined reference to cdns_remove

2021-01-14T01:02:00+00:00

Patch fixes the following errors:
ld: drivers/usb/cdns3/cdnsp-pci.o: in function `cdnsp_pci_remove':
cdnsp-pci.c:(.text+0x80): undefined reference to `cdns_remove'
ld: drivers/usb/cdns3/cdnsp-pci.o: in function `cdnsp_pci_probe':
cdnsp-pci.c:(.text+0x34c): undefined reference to `cdns_init'

Issue occurs for USB/CDNS3/CDNSP kernel configuration:
CONFIG_USB=m
CONFIG_USB_CDNS_SUPPORT=y
CONFIG_USB_CDNS3=m
CONFIG_USB_CDNS3_PCI_WRAP=m
CONFIG_USB_CDNSP_PCI=y

Acked-by: Randy Dunlap 
Reported-by: Randy Dunlap 
Signed-off-by: Pawel Laszczak 
Signed-off-by: Peter Chen

usb: cdnsp: Fix for undefined reference to `usb_hcd_is_primary_hcd'

2020-12-29T04:36:13+00:00

Patch fixes the following compilation error:

ld: drivers/usb/cdns3/host.o: in function `xhci_cdns3_suspend_quirk':
host.c:(.text+0x9): undefined reference to `usb_hcd_is_primary_hcd'

This reference to 'usb_hdc_is_primary_hcd' is from hcd_to_xhci(),
which is being built as a loadable module:

int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
{
        struct xhci_hcd *xhci = hcd_to_xhci(hcd);

Issue occurrd for following kernel configuration:
CONFIG_USB_GADGET=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=m

CONFIG_USB_CDNS_SUPPORT=y
CONFIG_USB_CDNS_HOST=y
CONFIG_USB_CDNS3=m
CONFIG_USB_CDNS3_GADGET=y
CONFIG_USB_CDNS3_HOST=y

Signed-off-by: Pawel Laszczak 
Reported-by: Randy Dunlap 
Acked-by: Randy Dunlap  # build-tested
Signed-off-by: Peter Chen

usb: cdns3: Change file names for cdns3 driver.

2020-12-29T04:36:13+00:00

Patch adds prefix cdns3- to all file names related only to
cdns3 driver.

Signed-off-by: Pawel Laszczak 
Signed-off-by: Peter Chen

usb: cdnsp: Add tracepoints for CDNSP driver

2020-12-29T04:36:13+00:00

Patch adds the series of tracepoints that can be used for
debugging issues detected in driver.

Signed-off-by: Pawel Laszczak 
Reviewed-by: Peter Chen 
Signed-off-by: Peter Chen

usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver

2020-12-29T04:36:13+00:00

This patch introduces the main part of Cadence USBSSP DRD driver
to Linux kernel.
To reduce the patch size a little bit, the header file gadget.h was
intentionally added as separate patch.

The Cadence USBSSP DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role Device (DRD), Peripheral Only and
Host Only (XHCI)configurations.

The current driver has been validated with FPGA platform. We have
support for PCIe bus, which is used on FPGA prototyping.

The host side of USBSS DRD controller is compliant with XHCI.
The architecture for device side is almost the same as for host side,
and most of the XHCI specification can be used to understand how
this controller operates.

Signed-off-by: Pawel Laszczak 
Signed-off-by: Peter Chen

usb: cdns3: Moves reusable code to separate module

2020-12-29T04:36:13+00:00

Patch moves common reusable code used by cdns3 and cdnsp driver
to cdns-usb-common library. This library include core.c, drd.c
and host.c files.

Signed-off-by: Pawel Laszczak 
Tested-by: Aswath Govindraju 
Signed-off-by: Peter Chen

usb: cdns3: Split core.c into cdns3-plat and core.c file

2020-12-29T04:36:13+00:00

Patch splits file core.c into core.c containing the common reusable code
and cnd3-plat.c containing device platform specific code. These changes
are required to make possible reuse DRD part of CDNS3 driver in CDNSP
driver.

Signed-off-by: Pawel Laszczak 
Tested-by: Aswath Govindraju 
Signed-off-by: Peter Chen

usb: cdns3: add NXP imx8qm glue layer

2020-01-15T09:39:22+00:00

There is a Cadence USB3 core for imx8qm and imx8qxp SoCs, the cdns
core is the child for this glue layer device.

Signed-off-by: Peter Chen 
Signed-off-by: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman