kernel/linux.git/drivers/mux/core.c, branch v6.19.11

mux: Convert mux_control_ops to a flex array member in mux_chip

2025-06-18T21:20:32+00:00

Convert mux_control_ops to a flexible array member at the end of the mux_chip struct and add the __counted_by() compiler attribute to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Use struct_size() to calculate the number of bytes to allocate for a new mux chip and to remove the following Coccinelle/coccicheck warning: WARNING: Use struct_size Use size_add() to safely add any extra bytes. No functional changes intended. Link: https://github.com/KSPP/linux/issues/83 Signed-off-by: Thorsten Blum Link: https://lore.kernel.org/r/20250610104106.1948-2-thorsten.blum@linux.dev Signed-off-by: Kees Cook

mux: constify mux class

2025-01-10T09:15:04+00:00

All class functions used here take a const pointer to the class structure so we can make the struct itself constant. Signed-off-by: Bartosz Golaszewski Link: https://lore.kernel.org/r/20241205085605.9501-1-brgl@bgdev.pl Signed-off-by: Greg Kroah-Hartman

mux: remove usage of the deprecated ida_simple_xx() API

2024-04-29T15:20:07+00:00

ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove(). This is less verbose. Link: https://lkml.kernel.org/r/f82e013abe4c71f1c7d06819f96472f298acdcf3.1713089554.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET Cc: Peter Rosin Cc: Greg Kroah-Hartman Signed-off-by: Andrew Morton

mux: Explicitly include correct DT includes

2023-08-28T18:36:24+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it was merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Link: https://lore.kernel.org/r/20230714174754.4060608-1-robh@kernel.org Signed-off-by: Rob Herring

drivers: remove struct module * setting from struct class

2023-03-17T14:16:27+00:00

There is no need to manually set the owner of a struct class, as the registering function does it automatically, so remove all of the explicit settings from various drivers that did so as it is unneeded. This allows us to remove this pointer entirely from this structure going forward. Cc: "Rafael J. Wysocki" Link: https://lore.kernel.org/r/20230313181843.1207845-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

mux: Fix struct mux_state kernel-doc comment

2022-02-04T14:47:12+00:00

A warning is reported because a colon was dropped, it is found by running scripts/kernel-doc, which is caused by using 'make W=1'. drivers/mux/core.c:44: warning: Function parameter or member 'state' not described in 'mux_state' Reported-by: Abaci Robot Signed-off-by: Yang Li Signed-off-by: Peter Rosin Link: https://lore.kernel.org/r/a9a970fc-63f9-5ab9-4983-fba5b01bebe2@axentia.se Signed-off-by: Greg Kroah-Hartman

mux: fix grammar, missing "is".

2022-02-04T14:47:12+00:00

This makes it easier to parse. Signed-off-by: Peter Rosin Link: https://lore.kernel.org/r/75067db8-0264-c49c-daa8-d7a877932711@axentia.se Signed-off-by: Greg Kroah-Hartman

mux: add missing mux_state_get

2022-02-04T14:47:11+00:00

And implement devm_mux_state_get in terms of the new function. Now we have both mux_state_get and mux_state_put as convenient functions ready to be exported should someone ever need unmanaged interfaces. Tested-by: Aswath Govindraju Signed-off-by: Peter Rosin Link: https://lore.kernel.org/r/6f8cfdfd-9fa6-40d1-09b3-0c9fc50835ac@axentia.se Signed-off-by: Greg Kroah-Hartman

mux: Add support for reading mux state from consumer DT node

2022-02-04T14:47:11+00:00

In some cases, we might need to provide the state of the mux to be set for the operation of a given peripheral. Therefore, pass this information using mux-states property. Link: https://lore.kernel.org/lkml/20211123081222.27979-1-a-govindraju@ti.com Signed-off-by: Aswath Govindraju Signed-off-by: Peter Rosin (minor edits) Link: https://lore.kernel.org/r/aac25be8-9515-a980-f7cb-709938c84822@axentia.se Signed-off-by: Greg Kroah-Hartman

mux: add support for delay after muxing

2021-10-21T19:02:42+00:00

Hardware may require some time for the muxed analog signals to settle after the muxing is changed. Allow users of the mux subsystem to specify this delay with the new mux_control_select_delay() function (and the _try equivalent). Signed-off-by: Vincent Whitchurch Reviewed-by: Lars-Peter Clausen Tested-by: Lars-Peter Clausen Acked-by: Peter Rosin Link: https://lore.kernel.org/r/20211007134641.13417-2-vincent.whitchurch@axis.com Signed-off-by: Jonathan Cameron