kernel/linux.git/drivers/tty/serdev/core.c, branch v6.6.132

serdev: Add method to assert break signal over tty UART port

2023-04-24T04:51:25+00:00

Adds serdev_device_break_ctl() and an implementation for ttyport. This function simply calls the break_ctl in tty layer, which can assert a break signal over UART-TX line, if the tty and the underlying platform and UART peripheral supports this operation. Signed-off-by: Neeraj Sanjay Kale Reviewed-by: Simon Horman Signed-off-by: Luiz Augusto von Dentz

serdev: Replace all instances of ENOTSUPP with EOPNOTSUPP

2023-04-24T04:51:11+00:00

This replaces all instances of ENOTSUPP with EOPNOTSUPP since ENOTSUPP is not a standard error code. This will help maintain consistency in error codes when new serdev API's are added. Signed-off-by: Neeraj Sanjay Kale Reviewed-by: Simon Horman Signed-off-by: Luiz Augusto von Dentz

serdev: Set fwnode for serdev devices

2023-03-09T16:09:56+00:00

This allow fw_devlink to do dependency tracking for serdev devices. Reported-by: Florian Fainelli Link: https://lore.kernel.org/lkml/03b70a8a-0591-f28b-a567-9d2f736f17e5@gmail.com/ Cc: Stefan Wahren Signed-off-by: Saravana Kannan Tested-by: Stefan Wahren Tested-by: Florian Fainelli Link: https://lore.kernel.org/r/20230302023509.319903-1-saravanak@google.com Signed-off-by: Greg Kroah-Hartman

driver core: make struct device_type.uevent() take a const *

2023-01-27T12:45:36+00:00

The uevent() callback in struct device_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Alan Stern Cc: Andreas Noever Cc: Andy Shevchenko Cc: Bard Liao Cc: Chaitanya Kulkarni Cc: Dan Williams Cc: Dmitry Torokhov Cc: Frank Rowand Cc: Ira Weiny Cc: Jason Gunthorpe Cc: Jens Axboe Cc: Jilin Yuan Cc: Jiri Slaby Cc: Len Brown Cc: Mark Gross Cc: "Martin K. Petersen" Cc: "Matthew Wilcox (Oracle)" Cc: Maximilian Luz Cc: Michael Jamet Cc: Ming Lei Cc: Pierre-Louis Bossart Cc: Rob Herring Cc: Sakari Ailus Cc: Sanyog Kale Cc: Sean Young Cc: Stefan Richter Cc: Thomas Gleixner Cc: Won Chung Cc: Yehezkel Bernat Acked-by: Rafael J. Wysocki Acked-by: Mika Westerberg # for Thunderbolt Acked-by: Mauro Carvalho Chehab Acked-by: Alexandre Belloni Acked-by: Heikki Krogerus Acked-by: Wolfram Sang Acked-by: Vinod Koul Acked-by: Hans de Goede Link: https://lore.kernel.org/r/20230111113018.459199-6-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

tty: Replace acpi_bus_get_device()

2022-01-31T13:30:06+00:00

Replace acpi_bus_get_device() that is going to be dropped with acpi_fetch_acpi_dev(). No intentional functional impact. Reviewed-by: Jiri Slaby Signed-off-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/7355105.EvYhyI6sBW@kreacher Signed-off-by: Greg Kroah-Hartman

serdev: Do not instantiate serdevs on boards with known bogus DSDT entries

2021-12-30T18:01:42+00:00

x86 ACPI devices which ship with only Android as their factory image use older kernels which do not yet support ACPI serdev enumeration, as such the serdev information in their ACPI tables is not reliable. For example on the Asus ME176C tablet the serdev describing the Bluetooth HCI points to the serdev_controller connected to the GPS and the other way around. Use the new acpi_quirk_skip_serdev_enumeration() helper to identify known boards with this issue and then either abort adding the serdev controller (creating a tty cdev instead) or only create the controller leaving the instantation of the serdev itself up to platform code. In the case where only the serdev controller is created the necessary serdevs will instead be instantiated by the drivers/platform/x86/x86-android-tablets.c kernel module. Acked-by: Greg Kroah-Hartman Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki

Merge tag 'tty-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2021-09-01T16:51:16+00:00

Pull tty / serial updates from Greg KH: "Here is the "big" set of tty/serial driver patches for 5.15-rc1 Nothing major in here at all, just some driver updates and more cleanups on old tty apis and code that needed it that includes: - tty.h cleanup of things that didn't belong in it - other tty cleanups by Jiri - driver cleanups - rs485 support added to amba-pl011 driver - dts updates - stm32 serial driver updates - other minor fixes and driver updates All have been in linux-next for a while with no reported problems" * tag 'tty-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (83 commits) tty: serial: uartlite: Use read_poll_timeout for a polling loop tty: serial: uartlite: Use constants in early_uartlite_putc tty: Fix data race between tiocsti() and flush_to_ldisc() serial: vt8500: Use of_device_get_match_data serial: tegra: Use of_device_get_match_data serial: 8250_ingenic: Use of_device_get_match_data tty: serial: linflexuart: Remove redundant check to simplify the code tty: serial: fsl_lpuart: do software reset for imx7ulp and imx8qxp tty: serial: fsl_lpuart: enable two stop bits for lpuart32 tty: serial: fsl_lpuart: fix the wrong mapbase value mxser: use semi-colons instead of commas tty: moxa: use semi-colons instead of commas tty: serial: fsl_lpuart: check dma_tx_in_progress in tx dma callback tty: replace in_irq() with in_hardirq() serial: sh-sci: fix break handling for sysrq serial: stm32: use devm_platform_get_and_ioremap_resource() serial: stm32: use the defined variable to simplify code Revert "arm pl011 serial: support multi-irq request" tty: serial: samsung: Add Exynos850 SoC data tty: serial: samsung: Fix driver data macros style ...

serdev: Split and export serdev_acpi_get_uart_resource()

2021-08-13T07:12:53+00:00

The same as for I²C Serial Bus resource split and export serdev_acpi_get_uart_resource(). We have already a few users one of which is converted here. Rationale of this is to consolidate parsing UART Serial Bus resource in one place as it's done, e.g., for I²C Serial Bus. Reviewed-by: Hans de Goede Acked-by: Hans de Goede Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210806111736.66591-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

bus: Make remove callback return void

2021-07-21T09:53:42+00:00

The driver core ignores the return value of this callback because there is only little it can do when a device disappears. This is the final bit of a long lasting cleanup quest where several buses were converted to also return void from their remove callback. Additionally some resource leaks were fixed that were caused by drivers returning an error code in the expectation that the driver won't go away. With struct bus_type::remove returning void it's prevented that newly implemented buses return an ignored error code and so don't anticipate wrong expectations for driver authors. Reviewed-by: Tom Rix (For fpga) Reviewed-by: Mathieu Poirier Reviewed-by: Cornelia Huck (For drivers/s390 and drivers/vfio) Acked-by: Russell King (Oracle) (For ARM, Amba and related parts) Acked-by: Mark Brown Acked-by: Chen-Yu Tsai (for sunxi-rsb) Acked-by: Pali Rohár Acked-by: Mauro Carvalho Chehab (for media) Acked-by: Hans de Goede (For drivers/platform) Acked-by: Alexandre Belloni Acked-By: Vinod Koul Acked-by: Juergen Gross (For xen) Acked-by: Lee Jones (For mfd) Acked-by: Johannes Thumshirn (For mcb) Acked-by: Johan Hovold Acked-by: Srinivas Kandagatla (For slimbus) Acked-by: Kirti Wankhede (For vfio) Acked-by: Maximilian Luz Acked-by: Heikki Krogerus (For ulpi and typec) Acked-by: Samuel Iglesias Gonsálvez (For ipack) Acked-by: Geoff Levand (For ps3) Acked-by: Yehezkel Bernat (For thunderbolt) Acked-by: Alexander Shishkin (For intel_th) Acked-by: Dominik Brodowski (For pcmcia) Acked-by: Rafael J. Wysocki (For ACPI) Acked-by: Bjorn Andersson (rpmsg and apr) Acked-by: Srinivas Pandruvada (For intel-ish-hid) Acked-by: Dan Williams (For CXL, DAX, and NVDIMM) Acked-by: William Breathitt Gray (For isa) Acked-by: Stefan Richter (For firewire) Acked-by: Benjamin Tissoires (For hid) Acked-by: Thorsten Scherer (For siox) Acked-by: Sven Van Asbroeck (For anybuss) Acked-by: Ulf Hansson (For MMC) Acked-by: Wolfram Sang # for I2C Acked-by: Sudeep Holla Acked-by: Geert Uytterhoeven Acked-by: Dmitry Torokhov Acked-by: Finn Thain Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

tty: serdev: core: Fix misspelled function name __serdev_device_driver_register()

2021-05-20T15:05:34+00:00

Fixes the following W=1 kernel build warning(s): drivers/tty/serdev/core.c:809: warning: expecting prototype for serdev_driver_register(). Prototype was for __serdev_device_driver_register() instead Cc: Rob Herring Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: linux-serial@vger.kernel.org Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20210520121906.3468725-3-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman