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Subject[PATCH v17 7/7] usb: Specify dependencies on USB_XHCI_PLATFORM with 'depends on'
Date
Some USB controller drivers that depend on the xhci-plat driver
specify this dependency using 'select' in Kconfig. This is not
recommended for symbols that have other dependencies as it may
lead to invalid configurations. Use 'depends on' to specify the
dependency instead of 'select'.

For dwc3 specify the dependency on USB_XHCI_PLATFORM in
USB_DWC3_HOST and USB_DWC3_DUAL_ROLE. Also adjust the
dependencies of USB_DWC3_CORE to make sure that at least one
of USB_DWC3_HOST, USB_DWC3_GADGET or USB_DWC3_DUAL_ROLE can be
selected.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---

Changes in v17:
- removed explicit dependency on USB from USB_DWC3
- added 'Reviewed-by' tags from Roger and Doug

Changes in v16:
- none

Changes in v15:
- adjusted dependencies of USB_DWC3_CORE to make sure it can only
be enabled when at least one of USB_DWC3_HOST, USB_DWC3_GADGET
or USB_DWC3_DUAL_ROLE is selectable
- updated commit message

Changes in v14:
- none

Changes in v13:
- patch added to the series

drivers/usb/cdns3/Kconfig | 2 +-
drivers/usb/dwc3/Kconfig | 5 +++--
drivers/usb/host/Kconfig | 4 ++--
3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig
index b98ca0a1352a..07e12f786d48 100644
--- a/drivers/usb/cdns3/Kconfig
+++ b/drivers/usb/cdns3/Kconfig
@@ -1,7 +1,7 @@
config USB_CDNS_SUPPORT
tristate "Cadence USB Support"
depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA
- select USB_XHCI_PLATFORM if USB_XHCI_HCD
+ depends on !USB_XHCI_HCD || USB_XHCI_PLATFORM
select USB_ROLE_SWITCH
help
Say Y here if your system has a Cadence USBSS or USBSSP
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index c483f28b695d..8f08b0724379 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -2,8 +2,7 @@

config USB_DWC3
tristate "DesignWare USB3 DRD Core Support"
- depends on (USB || USB_GADGET) && HAS_DMA
- select USB_XHCI_PLATFORM if USB_XHCI_HCD
+ depends on (USB_XHCI_PLATFORM || USB_GADGET) && HAS_DMA
select USB_ROLE_SWITCH if USB_DWC3_DUAL_ROLE
help
Say Y or M here if your system has a Dual Role SuperSpeed
@@ -30,6 +29,7 @@ choice
config USB_DWC3_HOST
bool "Host only mode"
depends on USB=y || USB=USB_DWC3
+ depends on USB_XHCI_PLATFORM
help
Select this when you want to use DWC3 in host mode only,
thereby the gadget feature will be regressed.
@@ -44,6 +44,7 @@ config USB_DWC3_GADGET
config USB_DWC3_DUAL_ROLE
bool "Dual Role mode"
depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3))
+ depends on USB_XHCI_PLATFORM
depends on (EXTCON=y || EXTCON=USB_DWC3)
help
This is the default mode of working of DWC3 controller where
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index d1d926f8f9c2..e5e612f143a1 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -80,7 +80,7 @@ config USB_XHCI_MTK

config USB_XHCI_MVEBU
tristate "xHCI support for Marvell Armada 375/38x/37xx"
- select USB_XHCI_PLATFORM
+ depends on USB_XHCI_PLATFORM
depends on HAS_IOMEM
depends on ARCH_MVEBU || COMPILE_TEST
help
@@ -112,9 +112,9 @@ config USB_EHCI_BRCMSTB
config USB_BRCMSTB
tristate "Broadcom STB USB support"
depends on (ARCH_BRCMSTB && PHY_BRCM_USB) || COMPILE_TEST
+ depends on !USB_XHCI_HCD || USB_XHCI_PLATFORM
select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
select USB_EHCI_BRCMSTB if USB_EHCI_HCD
- select USB_XHCI_PLATFORM if USB_XHCI_HCD
help
Enables support for XHCI, EHCI and OHCI host controllers
found in Broadcom STB SoC's.
--
2.34.0.rc1.387.gb447b232ab-goog
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