Changes in Kconfig

3d5390f4 - serial: 8250: add driver for NI UARTs

Tue, 18 Mar 2025 21:39:12 +0000

serial: 8250: add driver for NI UARTsThe National Instruments (NI) 16550 is a 16550-like UART with largerFIFOs and embedded RS-232/RS-485 transceiver control circuitry. Thispatch adds a driver that can operate this UART, which is used foronboard serial ports in several NI embedded controller designs.Portions of this driver were originally written by Jaeden Amero andKarthik Manamcheri, with extensive cleanups and refactors since byBrenda Streiff.Cc: Gratian Crisan Co-developed-by: Jason Smith Signed-off-by: Jason Smith Signed-off-by: Chaitanya Vadrevu Link: https://lore.kernel.org/r/a3b0df6d-1dd5-4cc4-a7e1-4ed51fb9e4cc@emerson.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

c1f5c148 - Revert "serial: Airoha SoC UART and HSUART support"

Thu, 06 Feb 2025 05:15:30 +0000

Revert "serial: Airoha SoC UART and HSUART support"This reverts commit e12ebf14fa3654f68589292e645ae1ef74786638.It causes build errors in linux-next.Cc: Benjamin Larsson Reported-by: Stephen Rothwell Link: https://lore.kernel.org/r/20250206135328.4bad1401@canb.auug.org.auSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

e12ebf14 - serial: Airoha SoC UART and HSUART support

Sun, 19 Jan 2025 13:01:05 +0000

serial: Airoha SoC UART and HSUART supportSupport for Airoha AN7581 SoC UART and HSUART baud ratecalculation routine.Signed-off-by: Benjamin Larsson Link: https://lore.kernel.org/r/20250119130105.2833517-3-benjamin.larsson@genexis.euSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

7c7e6c89 - tty: serial: handle HAS_IOPORT dependencies

Thu, 24 Oct 2024 17:54:43 +0000

tty: serial: handle HAS_IOPORT dependenciesIn a future patch HAS_IOPORT=n will disable inb()/outb() and friends atcompile time. We thus need to add HAS_IOPORT as dependency for thosedrivers using them unconditionally. Some 8250 serial drivers supportMMIO only use, so fence only the parts requiring I/O ports and print anerror message if a device can't be supported with the currentconfiguration.Co-developed-by: Arnd Bergmann Signed-off-by: Arnd Bergmann Acked-by: Greg Kroah-Hartman Reviewed-by: Maciej W. Rozycki Signed-off-by: Niklas Schnelle Signed-off-by: Arnd Bergmann List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

85eb2e57 - serial: 8250_exar: Replace custom EEPROM read with eeprom_93cx6

Wed, 02 Oct 2024 15:12:35 +0000

serial: 8250_exar: Replace custom EEPROM read with eeprom_93cx6Replace the custom 93cx6 EEPROM read functions with the eeprom_93cx6driver. This removes duplicate code and improves code readability.Replace exar_ee_read() calls with eeprom_93cx6_read() oreeprom_93cx6_multiread().Add "select EEPROM_93CX6" to config SERIAL_8250_EXAR to ensureeeprom_93cx6 driver is also compiled when 8250_exar driver is selected.Note: Old exar_ee_read() and associated functions are removed in nextpatch in this series.Link to mailing list discussion with Andy Shevchenko for reference.Link: https://lore.kernel.org/linux-serial/Ztr5u2wEt8VF1IdI@black.fi.intel.com/Reviewed-by: Andy Shevchenko Signed-off-by: Parker Newman Link: https://lore.kernel.org/r/1bf2214ae27130ca58b9e779c4d65a0e5db06fc1.1727880931.git.pnewman@connecttech.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

d813d900 - serial: 8250_exar: Use 8250 PCI library to map and assign resources

Mon, 19 Feb 2024 15:05:02 +0000

serial: 8250_exar: Use 8250 PCI library to map and assign resources8250 PCI library provides a common code to map and assign resources.Use it in order to deduplicate existing code and support IO portvariants.Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240219150627.2101198-7-andriy.shevchenko@linux.intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

5939ff7f - tty: serial: 8250_exar: Does not use anything from 8250_pci

Fri, 15 Sep 2023 09:43:36 +0000

tty: serial: 8250_exar: Does not use anything from 8250_pci8250_exar includes linux/8250_pci.h and depends on SERIAL_8250_PCI.Neither is necessary so this patch removes the include and changesthe depends on to SERIAL_8250 && PCI (taken from SERIAL_8250_PCI).Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230915094336.13278-2-ilpo.jarvinen@linux.intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

cf8e8658 - arch: Remove Itanium (IA-64) architecture

Thu, 20 Oct 2022 13:54:33 +0000

arch: Remove Itanium (IA-64) architectureThe Itanium architecture is obsolete, and an informal survey [0] revealsthat any residual use of Itanium hardware in production is mostly HP-UXor OpenVMS based. The use of Linux on Itanium appears to be limited toenthusiasts that occasionally boot a fresh Linux kernel to see whetherthings are still working as intended, and perhaps to churn out somedistro packages that are rarely used in practice.None of the original companies behind Itanium still produce or supportany hardware or software for the architecture, and it is listed as'Orphaned' in the MAINTAINERS file, as apparently, none of the engineersthat contributed on behalf of those companies (nor anyone else, for thatmatter) have been willing to support or maintain the architectureupstream or even be responsible for applying the odd fix. The Intelfirmware team removed all IA-64 support from the Tianocore/EDK2reference implementation of EFI in 2018. (Itanium is the originalarchitecture for which EFI was developed, and the way Linux supports itdeviates significantly from other architectures.) Some distros, such asDebian and Gentoo, still maintain [unofficial] ia64 ports, but many havedropped support years ago.While the argument is being made [1] that there is a 'for the commongood' angle to being able to build and run existing projects such as theGrid Community Toolkit [2] on Itanium for interoperability testing, thefact remains that none of those projects are known to be deployed onLinux/ia64, and very few people actually have access to such a system inthe first place. Even if there were ways imaginable in which Linux/ia64could be put to good use today, what matters is whether anyone isactually doing that, and this does not appear to be the case.There are no emulators widely available, and so boot testing Itanium isgenerally infeasible for ordinary contributors. GCC still supports IA-64but its compile farm [3] no longer has any IA-64 machines. GLIBC wouldlike to get rid of IA-64 [4] too because it would permit some overduecode cleanups. In summary, the benefits to the ecosystem of having IA-64be part of it are mostly theoretical, whereas the maintenance overheadof keeping it supported is real.So let's rip off the band aid, and remove the IA-64 arch code entirely.This follows the timeline proposed by the Debian/ia64 maintainer [5],which removes support in a controlled manner, leaving IA-64 in a knowngood state in the most recent LTS release. Other projects will followonce the kernel support is removed.[0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/[1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/[2] https://gridcf.org/gct-docs/latest/index.html[3] https://cfarm.tetaneutral.net/machines/list/[4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/[5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/Acked-by: Tony Luck Signed-off-by: Ard Biesheuvel List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

d9f59caf - serial: 8250: Apply FSL workarounds also without SERIAL_8250_CONSOLE

Fri, 09 Jun 2023 13:39:32 +0000

serial: 8250: Apply FSL workarounds also without SERIAL_8250_CONSOLEThe need to handle the FSL variant of 8250 in a special way is alsopresent without console support. So soften the dependency forSERIAL_8250_FSL from SERIAL_8250_CONSOLE to SERIAL_8250. To handleSERIAL_8250=m, the FSL code can be modular, too, thus SERIAL_8250_FSLbecomes tristate.Compiling 8250_fsl as a module requires adding a module license so thisis added, too. While add it also add a appropriate module description.As then SERIAL_OF_PLATFORM=y + SERIAL_8250_FSL=m is a valid combination(if COMPILE_TEST is enabled on a platform that is neither PPC, ARM norARM64), the check in 8250_of.c must be weakened a bit.Signed-off-by: Uwe Kleine-König Reviewed-by: Andy Shevchenko Message-ID: <20230609133932.786117-3-u.kleine-koenig@pengutronix.de>Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

1b997aef - serial: Indicate fintek option may also be required for RS232 support

Sun, 21 May 2023 07:50:44 +0000

serial: Indicate fintek option may also be required for RS232 supportThe current config comment for SERIAL_8250_FINTEK implies that thisoption is only needed when one wants to support RS485. As it turnsout we also need to enable this option for RS232 support to functioncorrectly on some variants.For example for variants such as the F71869AD attempting to usemultiple RS232 ports simultaneously without this option enabled canresult in data corruption.Signed-off-by: James Hilliard Link: https://lore.kernel.org/r/20230521075046.3539376-1-james.hilliard1@gmail.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

5d943b5d - serial: 8250_pci1xxxx: Disable SERIAL_8250_PCI1XXXX config by default

Sun, 05 Mar 2023 14:51:24 +0000

serial: 8250_pci1xxxx: Disable SERIAL_8250_PCI1XXXX config by defaultCommit 32bb477fa7bf ("serial: 8250_pci1xxxx: Add driver for quad-uartsupport") made the SERIAL_8250_PCI1XXXX driver enabled when SERIAL_8250is enabled, disable it as this driver does not need to be enabled bydefaultFixes: 32bb477fa7bf ("serial: 8250_pci1xxxx: Add driver for quad-uart support")Reported-by: Linus Torvalds Link: https://lore.kernel.org/lkml/CAHk-=whhFCeeuo6vTEmNSx6S-KKkugxgzN_W5Z6v-9yH9gc3Zw@mail.gmail.com/Signed-off-by: Kumaravel Thiagarajan Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230305145124.13444-1-kumaravel.thiagarajan@microchip.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

f8086d1a - serial: 8250: ASPEED_VUART: select REGMAP instead of depending on it

Sun, 26 Feb 2023 05:39:53 +0000

serial: 8250: ASPEED_VUART: select REGMAP instead of depending on itREGMAP is a hidden (not user visible) symbol. Users cannot set itdirectly thru "make *config", so drivers should select it instead ofdepending on it if they need it.Consistently using "select" or "depends on" can also help reduceKconfig circular dependency issues.Therefore, change the use of "depends on REGMAP" to "select REGMAP".Fixes: 8d310c9107a2 ("drivers/tty/serial/8250: Make Aspeed VUART SIRQ polarity configurable")Cc: stable Signed-off-by: Randy Dunlap Cc: Greg Kroah-Hartman Cc: Oskar Senft Cc: linux-serial@vger.kernel.orgLink: https://lore.kernel.org/r/20230226053953.4681-9-rdunlap@infradead.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

32bb477f - serial: 8250_pci1xxxx: Add driver for quad-uart support

Tue, 07 Feb 2023 16:48:12 +0000

serial: 8250_pci1xxxx: Add driver for quad-uart supportpci1xxxx is a PCIe switch with a multi-function endpoint on one ofits downstream ports. Quad-uart is one of the functions in themulti-function endpoint. This driver loads for the quad-uart andenumerates single or multiple instances of uart based on the PCIesubsystem device ID.Co-developed-by: Tharun Kumar P Signed-off-by: Tharun Kumar P Signed-off-by: Kumaravel Thiagarajan Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230207164814.3104605-3-kumaravel.thiagarajan@microchip.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

0348386d - serial: 8250_pci: Add serial8250_pci_setup_port definition in 8250_pcilib.c

Tue, 07 Feb 2023 16:48:11 +0000

serial: 8250_pci: Add serial8250_pci_setup_port definition in 8250_pcilib.cMove implementation of setup_port func() to serial8250_pci_setup_port.Co-developed-by: Tharun Kumar P Signed-off-by: Tharun Kumar P Signed-off-by: Kumaravel Thiagarajan Reviewed-by: Ilpo Järvinen Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230207164814.3104605-2-kumaravel.thiagarajan@microchip.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

e34a79d0 - tty: serial: 8250: add DFL bus driver for Altera 16550.

Sun, 15 Jan 2023 15:14:47 +0000

tty: serial: 8250: add DFL bus driver for Altera 16550.Add a Device Feature List (DFL) bus driver for the Altera16550 implementation of UART.Signed-off-by: Matthew Gerlach Reviewed-by: Ilpo Järvinen Reviewed-by: Andy Shevchenko Reviewed-by: Marco Pagani Link: https://lore.kernel.org/r/20230115151447.1353428-5-matthew.gerlach@linux.intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

9e4e2ce1 - parisc/serial: Rename 8250_gsc.c to 8250_parisc.c

Fri, 21 Oct 2022 06:02:31 +0000

parisc/serial: Rename 8250_gsc.c to 8250_parisc.cThe file name of this driver is misleading - it handles various serialports on parisc machines, not just such on the GSC bus.Rename the file to make this clearer.Suggested-by: Mikulas Patocka Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

e8a18e3f - parisc: Make 8250_gsc driver dependend on CONFIG_PARISC

Fri, 21 Oct 2022 05:44:49 +0000

parisc: Make 8250_gsc driver dependend on CONFIG_PARISCAlthough the name of the driver 8250_gsc.c suggests that it handlesonly serial ports on the GSC bus, it does handle serial ports listedin the parisc machine inventory as well, e.g. the serial ports in aC8000 PCI-only workstation.Change the dependency to CONFIG_PARISC, so that the driver gets includedin the kernel even if CONFIG_GSC isn't set.Reported-by: Mikulas Patocka Cc: Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

806a4497 - serial: 8250: SERIAL_8250_ASPEED_VUART should depend on ARCH_ASPEED

Mon, 11 Jul 2022 08:42:52 +0000

serial: 8250: SERIAL_8250_ASPEED_VUART should depend on ARCH_ASPEEDThe Aspeed Virtual UART is only present on Aspeed BMC platforms. Henceadd a dependency on ARCH_ASPEED, to prevent asking the user about thisdriver when configuring a kernel without Aspeed BMC support.Reviewed-by: Jeremy Kerr Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/259138c372d433005b4871789ef9ee8d15320307.1657528861.git.geert+renesas@glider.beSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

857f9713 - serial: 8250: Make SERIAL_8250_EM available for arm64 systems

Wed, 30 Mar 2022 15:40:16 +0000

serial: 8250: Make SERIAL_8250_EM available for arm64 systemsThis is needed for the Renesas RZ/V2M (r9a09g011) SoC.Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220330154024.112270-6-phil.edworthy@renesas.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig

6ba6351b - serial: 8250: Correct Kconfig help text for blacklisted PCI devices

Sat, 12 Feb 2022 17:30:53 +0000

serial: 8250: Correct Kconfig help text for blacklisted PCI devicesCorrect the Kconfig help text for SERIAL_8250_LPSS, SERIAL_8250_MID andSERIAL_8250_PERICOM configuration options for dedicated PCI UART driversthat have been blacklisted in the generic PCI 8250 UART driver and asfrom commit a13e19cf3dc10 ("serial: 8250_lpss: split LPSS driver toseparate module"), commit d9eda9bab2372 ("serial: 8250_pci: Intel MIDUART support to its own driver"), and commit fcfd3c09f4078 ("serial:8250_pci: Split out Pericom driver") respectively are not handled bysaid driver anymore (rather than for extra features only, as the currenttext indicates), and therefore require the respective dedicated driversto work at all.Signed-off-by: Maciej W. Rozycki Link: https://lore.kernel.org/r/alpine.DEB.2.21.2202121704560.34636@angie.orcam.me.ukSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/tty/serial/8250/Kconfig