WSL2-Linux-Kernel/drivers/char/xillybus/Kconfig

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# SPDX-License-Identifier: GPL-2.0-only
#
# Xillybus devices
#
char: xillybus: Move class-related functions to new xillybus_class.c This patch is a preparation for adding another related driver, XillyUSB. In order to share some code between the existing Xillybus driver and the one to be added, some functions are moved to xillybus_class.c XILLYBUS_CLASS is added to Kconfig and is common to all drivers in this group. The relation with the existing XILLYBUS symbol is "select" rather than "depends on" XILLYBUS_CLASS, or else "make olddefconfig" will silently turn off XILLYBUS, which is currently enabled in several distributions. XILLYBUS_CLASS doesn't depend on anything else, hence using it with "select" poses no risk for a broken configuration. After the future addition of the XillyUSB module, the tree of symbols will be as follows: XILLYBUS_CLASS --+-- XILLYBUS --+-- XILLYBUS_PCIE | | | +-- XILLYBUS_OF | +-- XILLYUSB XILLYBUS is for drivers based upon memory registers + DMA-based interfaces, and it's combined with XILLYBUS_PCIE and/or XILLYBUS_OF. XILLYUSB is for the USB variant only. Or a more detailed, bottom-up outline: * CONFIG_XILLYBUS_PCIE -> xillybus_pcie.c: Functions related to PCIe. * CONFIG_XILLYBUS_OF -> xillybus_of.c: Functions related to Xillybus as a peripheral on an FPGA / Processor combo chip. * CONFIG_XILLYBUS -> xillybus_core.c: Functions that are common to the two above, mainly access to the peripheral with memory-mapped registers and DMA. * CONFIG_XILLYUSB -> xillyusb.c: The driver for the USB variant, accesses the peripheral through the USB framework. * CONFIG_XILLYBUS_CLASS -> xillybus_class.c: The new module, which contains the class and API parts that would otherwise appear both in xillybus_core.c and xillyusb.c. Contains utility functions for the two latter. And since I'm at it, comments on the module names are added in the Kconfig's help part. The functions are exported with the non-GPL EXPORT_SYMBOL (a matter of taste). Signed-off-by: Eli Billauer <eli.billauer@gmail.com> Link: https://lore.kernel.org/r/20210526100311.56327-2-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 13:03:10 +03:00
config XILLYBUS_CLASS
tristate
config XILLYBUS
tristate "Xillybus generic FPGA interface"
depends on PCI || OF
select CRC32
char: xillybus: Move class-related functions to new xillybus_class.c This patch is a preparation for adding another related driver, XillyUSB. In order to share some code between the existing Xillybus driver and the one to be added, some functions are moved to xillybus_class.c XILLYBUS_CLASS is added to Kconfig and is common to all drivers in this group. The relation with the existing XILLYBUS symbol is "select" rather than "depends on" XILLYBUS_CLASS, or else "make olddefconfig" will silently turn off XILLYBUS, which is currently enabled in several distributions. XILLYBUS_CLASS doesn't depend on anything else, hence using it with "select" poses no risk for a broken configuration. After the future addition of the XillyUSB module, the tree of symbols will be as follows: XILLYBUS_CLASS --+-- XILLYBUS --+-- XILLYBUS_PCIE | | | +-- XILLYBUS_OF | +-- XILLYUSB XILLYBUS is for drivers based upon memory registers + DMA-based interfaces, and it's combined with XILLYBUS_PCIE and/or XILLYBUS_OF. XILLYUSB is for the USB variant only. Or a more detailed, bottom-up outline: * CONFIG_XILLYBUS_PCIE -> xillybus_pcie.c: Functions related to PCIe. * CONFIG_XILLYBUS_OF -> xillybus_of.c: Functions related to Xillybus as a peripheral on an FPGA / Processor combo chip. * CONFIG_XILLYBUS -> xillybus_core.c: Functions that are common to the two above, mainly access to the peripheral with memory-mapped registers and DMA. * CONFIG_XILLYUSB -> xillyusb.c: The driver for the USB variant, accesses the peripheral through the USB framework. * CONFIG_XILLYBUS_CLASS -> xillybus_class.c: The new module, which contains the class and API parts that would otherwise appear both in xillybus_core.c and xillyusb.c. Contains utility functions for the two latter. And since I'm at it, comments on the module names are added in the Kconfig's help part. The functions are exported with the non-GPL EXPORT_SYMBOL (a matter of taste). Signed-off-by: Eli Billauer <eli.billauer@gmail.com> Link: https://lore.kernel.org/r/20210526100311.56327-2-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 13:03:10 +03:00
select XILLYBUS_CLASS
help
Xillybus is a generic interface for peripherals designed on
programmable logic (FPGA). The driver probes the hardware for
its capabilities, and creates device files accordingly.
If unsure, say N.
if XILLYBUS
config XILLYBUS_PCIE
tristate "Xillybus over PCIe"
depends on PCI_MSI
help
Set to M if you want Xillybus to use PCI Express for communicating
char: xillybus: Move class-related functions to new xillybus_class.c This patch is a preparation for adding another related driver, XillyUSB. In order to share some code between the existing Xillybus driver and the one to be added, some functions are moved to xillybus_class.c XILLYBUS_CLASS is added to Kconfig and is common to all drivers in this group. The relation with the existing XILLYBUS symbol is "select" rather than "depends on" XILLYBUS_CLASS, or else "make olddefconfig" will silently turn off XILLYBUS, which is currently enabled in several distributions. XILLYBUS_CLASS doesn't depend on anything else, hence using it with "select" poses no risk for a broken configuration. After the future addition of the XillyUSB module, the tree of symbols will be as follows: XILLYBUS_CLASS --+-- XILLYBUS --+-- XILLYBUS_PCIE | | | +-- XILLYBUS_OF | +-- XILLYUSB XILLYBUS is for drivers based upon memory registers + DMA-based interfaces, and it's combined with XILLYBUS_PCIE and/or XILLYBUS_OF. XILLYUSB is for the USB variant only. Or a more detailed, bottom-up outline: * CONFIG_XILLYBUS_PCIE -> xillybus_pcie.c: Functions related to PCIe. * CONFIG_XILLYBUS_OF -> xillybus_of.c: Functions related to Xillybus as a peripheral on an FPGA / Processor combo chip. * CONFIG_XILLYBUS -> xillybus_core.c: Functions that are common to the two above, mainly access to the peripheral with memory-mapped registers and DMA. * CONFIG_XILLYUSB -> xillyusb.c: The driver for the USB variant, accesses the peripheral through the USB framework. * CONFIG_XILLYBUS_CLASS -> xillybus_class.c: The new module, which contains the class and API parts that would otherwise appear both in xillybus_core.c and xillyusb.c. Contains utility functions for the two latter. And since I'm at it, comments on the module names are added in the Kconfig's help part. The functions are exported with the non-GPL EXPORT_SYMBOL (a matter of taste). Signed-off-by: Eli Billauer <eli.billauer@gmail.com> Link: https://lore.kernel.org/r/20210526100311.56327-2-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 13:03:10 +03:00
with the FPGA. The module will be called xillybus_pcie.
config XILLYBUS_OF
tristate "Xillybus over Device Tree"
depends on OF && HAS_DMA
help
Set to M if you want Xillybus to find its resources from the
Open Firmware Flattened Device Tree. If the target is an embedded
char: xillybus: Move class-related functions to new xillybus_class.c This patch is a preparation for adding another related driver, XillyUSB. In order to share some code between the existing Xillybus driver and the one to be added, some functions are moved to xillybus_class.c XILLYBUS_CLASS is added to Kconfig and is common to all drivers in this group. The relation with the existing XILLYBUS symbol is "select" rather than "depends on" XILLYBUS_CLASS, or else "make olddefconfig" will silently turn off XILLYBUS, which is currently enabled in several distributions. XILLYBUS_CLASS doesn't depend on anything else, hence using it with "select" poses no risk for a broken configuration. After the future addition of the XillyUSB module, the tree of symbols will be as follows: XILLYBUS_CLASS --+-- XILLYBUS --+-- XILLYBUS_PCIE | | | +-- XILLYBUS_OF | +-- XILLYUSB XILLYBUS is for drivers based upon memory registers + DMA-based interfaces, and it's combined with XILLYBUS_PCIE and/or XILLYBUS_OF. XILLYUSB is for the USB variant only. Or a more detailed, bottom-up outline: * CONFIG_XILLYBUS_PCIE -> xillybus_pcie.c: Functions related to PCIe. * CONFIG_XILLYBUS_OF -> xillybus_of.c: Functions related to Xillybus as a peripheral on an FPGA / Processor combo chip. * CONFIG_XILLYBUS -> xillybus_core.c: Functions that are common to the two above, mainly access to the peripheral with memory-mapped registers and DMA. * CONFIG_XILLYUSB -> xillyusb.c: The driver for the USB variant, accesses the peripheral through the USB framework. * CONFIG_XILLYBUS_CLASS -> xillybus_class.c: The new module, which contains the class and API parts that would otherwise appear both in xillybus_core.c and xillyusb.c. Contains utility functions for the two latter. And since I'm at it, comments on the module names are added in the Kconfig's help part. The functions are exported with the non-GPL EXPORT_SYMBOL (a matter of taste). Signed-off-by: Eli Billauer <eli.billauer@gmail.com> Link: https://lore.kernel.org/r/20210526100311.56327-2-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-26 13:03:10 +03:00
system, say M. The module will be called xillybus_of.
endif # if XILLYBUS