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d991f855cb
'default n' is the default value for any bool or tristate Kconfig
setting so there is no need to write it explicitly.
Also since commit f467c5640c ("kconfig: only write '# CONFIG_FOO
is not set' for visible symbols") the Kconfig behavior is the same
regardless of 'default n' being present or not:
...
One side effect of (and the main motivation for) this change is making
the following two definitions behave exactly the same:
config FOO
bool
config FOO
bool
default n
With this change, neither of these will generate a
'# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied).
That might make it clearer to people that a bare 'default n' is
redundant.
...
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
96 lines
3.2 KiB
Text
96 lines
3.2 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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config USB_DWC2
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tristate "DesignWare USB2 DRD Core Support"
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depends on HAS_DMA
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depends on USB || USB_GADGET
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depends on HAS_IOMEM
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help
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Say Y here if your system has a Dual Role Hi-Speed USB
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controller based on the DesignWare HSOTG IP Core.
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For host mode, if you choose to build the driver as dynamically
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linked modules, the core module will be called dwc2.ko, the PCI
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bus interface module (if you have a PCI bus system) will be
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called dwc2_pci.ko, and the platform interface module (for
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controllers directly connected to the CPU) will be called
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dwc2_platform.ko. For all modes(host, gadget and dual-role), there
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will be an additional module named dwc2.ko.
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if USB_DWC2
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choice
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bool "DWC2 Mode Selection"
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default USB_DWC2_DUAL_ROLE if (USB && USB_GADGET)
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default USB_DWC2_HOST if (USB && !USB_GADGET)
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default USB_DWC2_PERIPHERAL if (!USB && USB_GADGET)
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config USB_DWC2_HOST
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bool "Host only mode"
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depends on USB=y || (USB_DWC2=m && USB)
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help
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The Designware USB2.0 high-speed host controller
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integrated into many SoCs. Select this option if you want the
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driver to operate in Host-only mode.
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comment "Gadget/Dual-role mode requires USB Gadget support to be enabled"
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config USB_DWC2_PERIPHERAL
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bool "Gadget only mode"
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depends on USB_GADGET=y || USB_GADGET=USB_DWC2
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help
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The Designware USB2.0 high-speed gadget controller
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integrated into many SoCs. Select this option if you want the
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driver to operate in Peripheral-only mode. This option requires
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USB_GADGET to be enabled.
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config USB_DWC2_DUAL_ROLE
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bool "Dual Role mode"
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depends on (USB=y && USB_GADGET=y) || (USB_DWC2=m && USB && USB_GADGET)
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help
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Select this option if you want the driver to work in a dual-role
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mode. In this mode both host and gadget features are enabled, and
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the role will be determined by the cable that gets plugged-in. This
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option requires USB_GADGET to be enabled.
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endchoice
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config USB_DWC2_PCI
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tristate "DWC2 PCI"
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depends on USB_PCI
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depends on USB_GADGET || !USB_GADGET
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select NOP_USB_XCEIV
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help
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The Designware USB2.0 PCI interface module for controllers
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connected to a PCI bus.
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config USB_DWC2_DEBUG
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bool "Enable Debugging Messages"
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help
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Say Y here to enable debugging messages in the DWC2 Driver.
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config USB_DWC2_VERBOSE
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bool "Enable Verbose Debugging Messages"
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depends on USB_DWC2_DEBUG
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help
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Say Y here to enable verbose debugging messages in the DWC2 Driver.
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WARNING: Enabling this will quickly fill your message log.
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If in doubt, say N.
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config USB_DWC2_TRACK_MISSED_SOFS
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bool "Enable Missed SOF Tracking"
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help
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Say Y here to enable logging of missed SOF events to the dmesg log.
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WARNING: This feature is still experimental.
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If in doubt, say N.
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config USB_DWC2_DEBUG_PERIODIC
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bool "Enable Debugging Messages For Periodic Transfers"
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depends on USB_DWC2_DEBUG || USB_DWC2_VERBOSE
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default y
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help
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Say N here to disable (verbose) debugging messages to be
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logged for periodic transfers. This allows better debugging of
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non-periodic transfers, but of course the debug logs will be
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incomplete. Note that this also disables some debug messages
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for which the transfer type cannot be deduced.
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endif
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