kernel/linux.git/drivers/gnss, branch v6.19.11

gnss: ubx: add support for the safeboot gpio

2025-11-20T15:44:04+00:00

U-Blox M8/M9 chip have a pin to start it in safeboot mode, to be used to recover from situations where the flash content has become corrupted and needs to be restored. If this pin is asserted at power up/reset, the receiver starts in safeboot mode and GNSS operation is disabled. Deassert the safeboot pin when probing this driver. Signed-off-by: Alejandro Enrique Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250911-ubx-safeboot-v3-2-32fe6b882a3c@geotab.com [ johan: deassert after requesting supplies ] Signed-off-by: Johan Hovold

[tree-wide] finally take no_llseek out

2024-09-27T15:18:43+00:00

no_llseek had been defined to NULL two years ago, in commit 868941b14441 ("fs: remove no_llseek") To quote that commit, At -rc1 we'll need do a mechanical removal of no_llseek - git grep -l -w no_llseek | grep -v porting.rst | while read i; do sed -i '/\/d' $i done would do it. Unfortunately, that hadn't been done. Linus, could you do that now, so that we could finally put that thing to rest? All instances are of the form .llseek = no_llseek, so it's obviously safe. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

treewide, serdev: change receive_buf() return type to size_t

2024-01-28T02:13:53+00:00

receive_buf() is called from ttyport_receive_buf() that expects values ">= 0" from serdev_controller_receive_buf(), change its return type from ssize_t to size_t. The need for this clean-up was noticed while fixing a warning, see commit 94d053942544 ("Bluetooth: btnxpuart: fix recv_buf() return value"). Changing the callback prototype to return an unsigned seems the best way to document the API and ensure that is properly used. GNSS drivers implementation of serdev receive_buf() callback return directly the return value of gnss_insert_raw(). gnss_insert_raw() returns a signed int, however this is not an issue since the value returned is always positive, because of the kfifo_in() implementation. gnss_insert_raw() could be changed to return also an unsigned, however this is not implemented here as request by the GNSS maintainer Johan Hovold. Suggested-by: Jiri Slaby Link: https://lore.kernel.org/all/087be419-ec6b-47ad-851a-5e1e3ea5cfcc@kernel.org/ Signed-off-by: Francesco Dolcini Acked-by: Jonathan Cameron #for-iio Reviewed-by: Johan Hovold Reviewed-by: Rob Herring Reviewed-by: Alex Elder Acked-by: Maximilian Luz # for platform/surface Acked-by: Lee Jones Acked-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20240122180551.34429-1-francesco@dolcini.it Signed-off-by: Greg Kroah-Hartman

Merge tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2024-01-18T19:37:24+00:00

Pull tty / serial updates from Greg KH: "Here is the big set of tty and serial driver changes for 6.8-rc1. As usual, Jiri has a bunch of refactoring and cleanups for the tty core and drivers in here, along with the usual set of rs485 updates (someday this might work properly...) Along with those, in here are changes for: - sc16is7xx serial driver updates - platform driver removal api updates - amba-pl011 driver updates - tty driver binding updates - other small tty/serial driver updates and changes All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits) serial: sc16is7xx: refactor EFR lock serial: sc16is7xx: reorder code to remove prototype declarations serial: sc16is7xx: refactor FIFO access functions to increase commonality serial: sc16is7xx: drop unneeded MODULE_ALIAS serial: sc16is7xx: replace hardcoded divisor value with BIT() macro serial: sc16is7xx: add explicit return for some switch default cases serial: sc16is7xx: add macro for max number of UART ports serial: sc16is7xx: add driver name to struct uart_driver serial: sc16is7xx: use i2c_get_match_data() serial: sc16is7xx: use spi_get_device_match_data() serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield serial: sc16is7xx: improve do/while loop in sc16is7xx_irq() serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq() serial: sc16is7xx: set safe default SPI clock frequency serial: sc16is7xx: add check for unsupported SPI modes during probe serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error serial: 8250_exar: Set missing rs485_supported flag serial: omap: do not override settings for RS485 support serial: core, imx: do not set RS485 enabled if it is not supported serial: core: make sure RS485 cannot be enabled when it is not supported ...

gnss: ubx: add support for the reset gpio

2023-12-15T08:29:54+00:00

The Renesas KingFisher board includes a U-Blox Neo-M8 chip. This chip has a reset pin which is also wired on the board. When Linux starts, reset is asserted by the firmware. Deassert the reset pin when probing this driver. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven [ johan: rename gpio descriptor variable ] Signed-off-by: Johan Hovold

gnss: ubx: use new helper to remove open coded regulator handling

2023-12-15T08:08:56+00:00

v_bckp shall always be enabled as long as the device exists. We now have a regulator helper for that, use it. Signed-off-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Signed-off-by: Johan Hovold

tty: serdev: convert to u8 and size_t

2023-12-08T11:02:38+00:00

Switch character types to u8 and sizes to size_t. To conform to characters/sizes in the rest of the tty layer. This patch converts struct serdev_device_ops hooks and its instantiations. Signed-off-by: "Jiri Slaby (SUSE)" Cc: Rob Herring Acked-by: Johan Hovold Link: https://lore.kernel.org/r/20231206073712.17776-24-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

driver core: class: remove module * from class_create()

2023-03-17T14:16:33+00:00

The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" Acked-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

driver core: make struct class.dev_uevent() take a const *

2022-11-24T16:12:15+00:00

The dev_uevent() in struct class 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: Jens Axboe Cc: Luis Chamberlain Cc: Russ Weight Cc: Jean Delvare Cc: Johan Hovold Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: Karsten Keil Cc: Mauro Carvalho Chehab Cc: Keith Busch Cc: Christoph Hellwig Cc: Sagi Grimberg Cc: Dominik Brodowski Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Johannes Berg Cc: Wolfram Sang Cc: Raed Salem Cc: Chen Zhongjin Cc: Tetsuo Handa Cc: Avihai Horon Cc: "Matthew Wilcox (Oracle)" Cc: Alan Stern Cc: Colin Ian King Cc: Geert Uytterhoeven Cc: Jakob Koschel Cc: Antoine Tenart Cc: Frederic Weisbecker Cc: Wang Yufen Cc: linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: linux-nvme@lists.infradead.org Cc: linux-pm@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by: Sebastian Reichel Acked-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/20221123122523.1332370-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

gnss: replace ida_simple API

2022-06-21T07:30:36+00:00

Use ida_alloc_xxx()/ida_free() instead of ida_simple_get()/ida_simple_remove(), which has been deprecated. Note that the upper bound is now inclusive. Signed-off-by: Bo Liu Link: https://lore.kernel.org/r/20220616044733.3605-1-liubo03@inspur.com Reviewed-by: Christophe JAILLET [ johan: amend commit message ] Signed-off-by: Johan Hovold