linux.git/include/linux/amba, branch v6.12.80

ARM: 9416/1: amba: make amba_bustype constant

2024-09-04T14:01:17+00:00

Since commit d492cc2573a0 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the amba_bustype variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Cc: Greg Kroah-Hartman 
Suggested-by: Greg Kroah-Hartman 
Signed-off-by: Kunwu Chan 
Signed-off-by: Russell King (Oracle)

ARM: 9361/1: amba: store owner from modules with amba_driver_register()

2024-04-18T11:09:14+00:00

Modules registering driver with amba_driver_register() often forget to
set .owner field.  The field is used by some of other kernel parts for
reference counting (try_module_get()), so it is expected that drivers
will set it.

Solve the problem by moving this task away from the drivers to the core
amba bus code, just like we did for platform_driver in
commit 9447057eaff8 ("platform_device: use a macro instead of
platform_driver_register").

Link: https://lore.kernel.org/r/20240326-module-owner-amba-v1-1-4517b091385b@linaro.org

Reviewed-by: Andi Shyti 
Acked-by: Suzuki K Poulose 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Russell King (Oracle)

spi: pl022: Add missing dma_filter field kerneldoc

2024-02-08T21:23:41+00:00

Add kerneldoc for dma_filter field in struct pl022_ssp_controller.

Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20240208202154.630336-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown

spi: pl022: Use typedef for dma_filter_fn

2024-02-08T21:23:40+00:00

Use existing typedef for dma_filter_fn to avoid duplicating type
definition.

Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20240208202154.630336-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown

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
  ...

fbdev: amba-clcd: Delete the old CLCD driver

2024-01-12T11:38:37+00:00

We have managed to ascertain that all users of the old FBDEV
code that are out of tree are now gone.

The new DRM driver can be found in drivers/gpu/drm/pl111/.

The remaining out of tree user was the ARM FVP emulation
platform, running Android. Thanks to changes in Android
versions 13 and 14, Android can now use the DRM driver when
being emulated under FVP. Some final patches are being put
in place to make it fully featured.

This is essentially a revert of the partial revert in
commit 112c35237c72 ("Partially revert "video: fbdev: amba-clcd: Retire elder CLCD driver"")

Signed-off-by: Linus Walleij 
Signed-off-by: Helge Deller

tty: serial: amba: Use linux/{bits,bitfield}.h macros

2023-12-15T13:24:12+00:00

The driver uses bit shifts and hexadecimal expressions to declare
constants. Replace that with the BIT(), GENMASK() & FIELD_PREP_CONST()
macros to clarify intent.

include/linux/amba/serial.h gets included from arch/arm/include/debug/pl01x.S.
Avoid includes and macro tricks for the four defines that are involved:
UART01x_DR, UART01x_FR, UART01x_FR_TXFF and UART01x_FR_BUSY.

Reviewed-by: Linus Walleij 
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Théo Lebrun 
Link: https://lore.kernel.org/r/20231207-mbly-uart-v6-1-e384afa5e78c@bootlin.com
Signed-off-by: Greg Kroah-Hartman

tty: serial: amba: cleanup whitespace

2023-12-08T11:02:37+00:00

Fix whitespace in include/linux/amba/serial.h to match current kernel
coding standards. Fixes about:

 - CHECK: spaces preferred around that '|' (ctx:VxV)
 - ERROR: code indent should use tabs where possible
 - WARNING: Unnecessary space before function pointer arguments
 - WARNING: please, no spaces at the start of a line

Reviewed-by: Linus Walleij 
Reviewed-by: Ilpo Järvinen 
Signed-off-by: Théo Lebrun 
Link: https://lore.kernel.org/r/20231130-mbly-uart-v5-1-6566703a04b5@bootlin.com
Signed-off-by: Greg Kroah-Hartman

amba: move to_amba_device() to use container_of_const

2023-05-31T18:01:32+00:00

to_amba_device() now properly keeps the const-ness of the dev pointer
passed into it, while as before it could be lost.

Signed-off-by: Prathu Baronia 
Link: https://lore.kernel.org/r/20230518134656.9559-1-prathubaronia2011@gmail.com
Signed-off-by: Greg Kroah-Hartman

ARM: s3c: remove all s3c24xx support

2023-01-16T08:26:05+00:00

The platform was deprecated in commit 6a5e69c7ddea ("ARM: s3c: mark
as deprecated and schedule removal") and can be removed. This includes
all files that are exclusively for s3c24xx and not shared with s3c64xx,
as well as the glue logic in Kconfig and the maintainer file entries.

Cc: Arnaud Patard 
Cc: Ben Dooks 
Cc: Christer Weinigel 
Cc: Guillaume GOURAT 
Cc: Heiko Stuebner 
Cc: Simtec Linux Team 
Cc: openmoko-kernel@lists.openmoko.org
Acked-by: Heiko Stuebner 
Acked-by: Krzysztof Kozlowski 
Signed-off-by: Arnd Bergmann