Changes in Kconfig

d0f8e978 - i2c: muxes: add support for tsd,mule-i2c multiplexer

Fri, 06 Sep 2024 15:54:13 +0000

i2c: muxes: add support for tsd,mule-i2c multiplexerTheobroma Systems Mule is an MCU that emulates a set of I2C devices,among which an amc6821 and devices that are reachable through an I2C-mux.The devices on the mux can be selected by writing the appropriate devicenumber to an I2C config register (amc6821 reg 0xff).This driver is expected to be probed as a platform device with amc6821as its parent i2c device.Add support for the mule-i2c-mux platform driver. The amc6821 driversupport for the mux will be added in a later commit.Reviewed-by: Wolfram Sang Signed-off-by: Farouk Bouabid Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

81694437 - i2c: muxes: pca954x: Add MAX735x/MAX736x support

Mon, 21 Aug 2023 06:20:23 +0000

i2c: muxes: pca954x: Add MAX735x/MAX736x supportAdd support for the following Maxim chips using the existing PCA954xdriver:- MAX7356- MAX7357- MAX7358- MAX7367- MAX7368- MAX7369All added Maxim chips behave like the PCA954x, where a single SMBUS bytewrite selects up to 8 channels to be bridged to the primary bus.While the MAX7357/MAX7358 have interrupt support, they don't act asinterrupt controller like the PCA9545 does. Thus don't enable IRQ supportand handle them like the PCA9548.Tested using the MAX7357.Signed-off-by: Patrick Rudolph Reviewed-by: Andi Shyti Acked-by: Peter Rosin Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

874765c9 - i2c: muxes: Drop obsolete dependency on COMPILE_TEST

Thu, 04 Aug 2022 11:45:45 +0000

i2c: muxes: Drop obsolete dependency on COMPILE_TESTSince commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), itis possible to test-build any driver which depends on OF on anyarchitecture by explicitly selecting OF. Therefore depending onCOMPILE_TEST as an alternative is no longer needed.It is actually better to always build such drivers with OF enabled,so that the test builds are closer to how each driver will actually bebuilt on its intended target. Building them without OF may not testmuch as the compiler will optimize out potentially large parts of thecode. In the worst case, this could even pop false positive warnings.Dropping COMPILE_TEST here improves the quality of our testing andavoids wasting time on non-existent issues.Signed-off-by: Jean Delvare Acked-by: Peter Rosin Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

1b00ff61 - i2c: Fix Kconfig indentation

Thu, 21 Nov 2019 03:19:23 +0000

i2c: Fix Kconfig indentationAdjust indentation from spaces to tab (+optional two spaces) as incoding style with command like: $ sed -e 's/^ /\t/' -i */KconfigSigned-off-by: Krzysztof Kozlowski Acked-by: Peter Rosin Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

8f6d6016 - i2c: mux: pca954x: add support for NXP PCA984x family

Mon, 25 Dec 2017 21:26:46 +0000

i2c: mux: pca954x: add support for NXP PCA984x familyThis patch extends the current i2c-mux-pca954x driver and adds support fora newer PCA984x family of the I2C switches and multiplexers from NXP.Signed-off-by: Adrian Fiergolski Reviewed-by: Rob Herring Signed-off-by: Peter Rosin List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

fabf08a0 - i2c: mux: i2c-arb-gpio-challenge: allow compiling w/o OF support

Tue, 01 Aug 2017 13:16:21 +0000

i2c: mux: i2c-arb-gpio-challenge: allow compiling w/o OF supportIt simplifies some tests.Signed-off-by: Peter Rosin List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

c4aee3e1 - i2c: mux: pinctrl: remove platform_data

Sun, 21 May 2017 16:48:07 +0000

i2c: mux: pinctrl: remove platform_dataNo platform (at least no upstreamed platform) has ever used thisplatform_data. Just drop it and simplify the code.Reviewed-by: Stephen Warren Acked-by: Wolfram Sang Signed-off-by: Peter Rosin List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

d1510a2e - i2c: mux: pinctrl: mention correct module name in Kconfig help text

Wed, 12 Jul 2017 17:31:26 +0000

i2c: mux: pinctrl: mention correct module name in Kconfig help textKconfig says the resulting module is pinctrl-i2cmux, but the module whenbuilt is i2c-mux-pinctrl.Fixes: ae58d1e40698 ("i2c: Add generic I2C multiplexer using pinctrl API")Signed-off-by: Chris Gorman Signed-off-by: Peter Rosin List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

ac8498f0 - i2c: i2c-mux-gpmux: new driver

Sun, 14 May 2017 19:51:12 +0000

i2c: i2c-mux-gpmux: new driverThis is a general purpose i2c mux that uses a multiplexer controlled bythe multiplexer subsystem to do the muxing.The user can select if the mux is to be mux-locked and parent-lockedas described in Documentation/i2c/i2c-topology.Acked-by: Jonathan Cameron Acked-by: Wolfram Sang Signed-off-by: Peter Rosin Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

dbed8a80 - i2c: mux: ltc4306: LTC4306 and LTC4305 I2C multiplexer/switch

Tue, 11 Apr 2017 12:16:16 +0000

i2c: mux: ltc4306: LTC4306 and LTC4305 I2C multiplexer/switchThis patch adds support for the Analog Devices / Linear TechnologyLTC4306 and LTC4305 4/2 Channel I2C Bus Multiplexer/Switches.The LTC4306 optionally provides two general purpose input/output pins(GPIOs) that can be configured as logic inputs, opendrain outputs orpush-pull outputs via the generic GPIOLIB framework.Signed-off-by: Michael Hennerich Reviewed-by: Linus Walleij Signed-off-by: Peter Rosin List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

c02b7bf5 - i2c: mux: mellanox: add driver

Thu, 10 Nov 2016 21:26:23 +0000

i2c: mux: mellanox: add driverThis driver allows I2C routing controlled through CPLD select registers ona wide range of Mellanox systems (CPLD Lattice device).MUX selection is provided by digital and analog HW. Analog part is notunder SW control.Digital part is under CPLD control (channel selection/de-selection).Connectivity schema..---. .-------------.| l | | |-- i2cx1 -- i2cx8| i |-- i2cn --+--| mlxcpld mux || n | | | |-- i2cy1 -- i2cy8| u | | '-------------'| x | | |'---' '---------'i2c-mux-mlxpcld does not necessarily require i2c-mlxcpld. It can be usedalong with another bus driver, and still control i2c routing through CPLDmux selection, in case the system is equipped with CPLD capable of muxselection control.The Kconfig currently controlling compilation of this code is:drivers/i2c/muxes/Kconfig:config I2C_MUX_MLXCPLDSigned-off-by: Michael Shych Signed-off-by: Vadim Pasternak Reviewed-by: Jiri Pirko Acked-by: Peter Rosin Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

93d710a6 - i2c: mux: fix up dependencies

Mon, 14 Nov 2016 14:34:17 +0000

i2c: mux: fix up dependenciesWe get the following build error from UM Linux after addingan entry to drivers/iio/gyro/Kconfig that issues "select I2C_MUX":ERROR: "devm_ioremap_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined!ERROR: "of_address_to_resource" [drivers/i2c/muxes/i2c-mux-reg.ko] undefined!It appears that the I2C mux core code depends on HAS_IOMEMfor historical reasons, while CONFIG_I2C_MUX_REG does *not*have a direct dependency on HAS_IOMEM.This creates a situation where a allyesconfig or allmodconfigfor UM Linux will select I2C_MUX, and will implicitly enableI2C_MUX_REG as well, and the compilation will fail for theregister driver.Fix this up by making I2C_MUX_REG depend on HAS_IOMEM andremoving the dependency from I2C_MUX.Reported-by: kbuild test robot Reported-by: Jonathan Cameron Signed-off-by: Linus Walleij Acked-by: Jonathan Cameron Acked-by: Peter Rosin Signed-off-by: Wolfram Sang Cc: stable@kernel.org List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

50a5ba87 - i2c: mux: demux-pinctrl: add driver

Wed, 13 Jan 2016 14:29:27 +0000

i2c: mux: demux-pinctrl: add driverThis driver allows an I2C bus to switch between multiple masters. Thisis not hot-switching because connected I2C slaves will bere-instantiated. It is meant to select the best I2C core at runtime oncethe task is known. Example: Prefer i2c-gpio over another I2C corebecause of HW errata affecting your use case.Signed-off-by: Wolfram Sang Acked-by: Rob Herring Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

b3fdd327 - i2c: mux: Add register-based mux i2c-mux-reg

Mon, 17 Aug 2015 18:53:48 +0000

i2c: mux: Add register-based mux i2c-mux-regBased on i2c-mux-gpio driver, similarly the register-based muxswitch from one bus to another by setting a single register.The register can be on PCIe bus, local bus, or any memory-mappedaddress. The endianness of such register can be specified in devicetree if used, or in platform data.Signed-off-by: York Sun Acked-by: Alexander Sverdlin Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

7e5cd69a - i2c: Allow compile test of GPIO consumers if !GPIOLIB

Tue, 05 May 2015 16:32:22 +0000

i2c: Allow compile test of GPIO consumers if !GPIOLIBThe GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB isnot enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumerfunctionality only, can still be compiled if GPIOLIB is not enabled.Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, whereappropriate.Signed-off-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

e556756a - i2c: mux: pca954x: fix dependencies

Mon, 09 Jun 2014 13:11:13 +0000

i2c: mux: pca954x: fix dependenciesThis driver causes the following randconfig build error:drivers/i2c/muxes/i2c-mux-pca954x.c: In function ‘pca954x_probe’:drivers/i2c/muxes/i2c-mux-pca954x.c:204:2: error: implicit declarationof function ‘devm_gpiod_get’ [-Werror=implicit-function-declaration] gpio = devm_gpiod_get(&client->dev, "reset"); ^drivers/i2c/muxes/i2c-mux-pca954x.c:204:7: warning: assignment makespointer from integer without a cast [enabled by default] gpio = devm_gpiod_get(&client->dev, "reset"); ^drivers/i2c/muxes/i2c-mux-pca954x.c:206:3: error: implicit declarationof function ‘gpiod_direction_output’[-Werror=implicit-function-declaration] gpiod_direction_output(gpio, 0); ^cc1: some warnings being treated as errorsmake[3]: *** [drivers/i2c/muxes/i2c-mux-pca954x.o] Error 1This is because it is getting compiled without gpiolib, sointroduce an explicit dependency.Reported-by: Jim Davis Signed-off-by: Linus Walleij Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

b81dfaa0 - i2c: mux: Add i2c-arb-gpio-challenge 'mux' driver

Tue, 16 Apr 2013 06:29:00 +0000

i2c: mux: Add i2c-arb-gpio-challenge 'mux' driverThe i2c-arb-gpio-challenge driver implements an I2C arbitration schemewhere masters need to claim the bus with a GPIO before they can starta transaction. This should generally only be used when standard I2Cmultimaster isn't appropriate for some reason (errata/bugs).This driver is based on code that Simon Glass added to the i2c-s3c2410driver in the Chrome OS kernel 3.4 tree. The current incarnation as amux driver is as suggested by Grant Likely. See for some history.Signed-off-by: Doug Anderson Signed-off-by: Simon Glass Signed-off-by: Naveen Krishna Chatradhi Reviewed-by: Stephen Warren Acked-by: Olof Johansson Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

76ec9d18 - Convert selectors of GENERIC_GPIO to GPIOLIB

Thu, 28 Mar 2013 11:34:56 +0000

Convert selectors of GENERIC_GPIO to GPIOLIBGENERIC_GPIO is now equivalent to GPIOLIB and features that depended onGENERIC_GPIO can now depend on GPIOLIB to allow removal of this option.Signed-off-by: Alexandre Courbot Acked-by: Linus Walleij Acked-by: Grant Likely List of files: /linux-6.15/drivers/i2c/muxes/Kconfig

240335fd - drivers/i2c/muxes: remove depends on CONFIG_EXPERIMENTAL

Tue, 02 Oct 2012 18:17:10 +0000

drivers/i2c/muxes: remove depends on CONFIG_EXPERIMENTALThe CONFIG_EXPERIMENTAL config item has not carried much meaning for awhile now and is almost always enabled by default. As agreed during theLinux kernel summit, remove it from any "depends on" lines in Kconfigs.CC: Stephen Warren CC: Peter Korsgaard Signed-off-by: Kees Cook Acked-by: Peter Korsgaard List of files: /linux-6.15/drivers/i2c/muxes/Kconfig