Changes in Makefile

5ea55847 - i2c: spacemit: add support for SpacemiT K1 SoC

Wed, 19 Mar 2025 09:29:00 +0000

i2c: spacemit: add support for SpacemiT K1 SoCThis patch introduces basic I2C support for the SpacemiT K1 SoC,utilizing interrupts for transfers.The driver has been tested using i2c-tools on a Bananapi-F3 board,and basic I2C read/write operations have been confirmed to work.Signed-off-by: Troy Mitchell Reviewed-by: Alex Elder Signed-off-by: Andi Shyti Link: https://lore.kernel.org/r/20250319-k1-i2c-master-v8-2-013e2df2b78d@gmail.com List of files: /linux-6.15/drivers/i2c/busses/Makefile

c366be72 - i2c: Add driver for the RTL9300 I2C controller

Wed, 06 Nov 2024 00:18:35 +0000

i2c: Add driver for the RTL9300 I2C controllerAdd support for the I2C controller on the RTL9300 SoC. There are two I2Ccontrollers in the RTL9300 that are part of the Ethernet switch registerblock. Each of these controllers owns a SCL pin (GPIO8 for the fiorstI2C controller, GPIO17 for the second). There are 8 possible SDA pins(GPIO9-16) that can be assigned to either I2C controller. Thisrelationship is represented in the device tree with a child node foreach SDA line in use.This is based on the openwrt implementation[1] but has beensignificantly modified[1] - https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/realtek/files-5.15/drivers/i2c/busses/i2c-rtl9300.cSigned-off-by: Chris Packham Reviewed-by: Andi Shyti Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

51616b0c - i2c: busses: Use -y instead of -objs in Makefile

Mon, 04 Nov 2024 10:39:14 +0000

i2c: busses: Use *-y instead of *-objs in Makefile*-objs suffix is reserved rather for (user-space) host programs whileusually *-y suffix is used for kernel drivers (although *-objs worksfor that purpose for now).Let's correct the old usages of *-objs in Makefiles.While at it, fix an obvious typo in help section of the Kconfig.Signed-off-by: Andy Shevchenko Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

b7ef4e0b - i2c: Drop legacy muxing pseudo-drivers

Tue, 22 Oct 2024 10:00:27 +0000

i2c: Drop legacy muxing pseudo-driversThe i2c-amd756-s4882 and i2c-nforce2-s4985 muxing pseudo-drivers werewritten at a time when the i2c core did not support muxing. They areessentially board-specific hacks. If we had to add support for theseboards today, we would implement it in a completely different way.These Tyan server boards are 19 years old by now, so I very much doubtany of these is still running today. So let's just drop this clumsycode. If anyone really still needs this support and complains, I'llrewrite it in a proper way on top of i2c-mux.This also fixes the following warnings:drivers/i2c/busses/i2c-amd756.c:286:20: warning: symbol 'amd756_smbus' was not declared. Should it be static?drivers/i2c/busses/i2c-nforce2.c:123:20: warning: symbol 'nforce2_smbus' was not declared. Should it be static?Signed-off-by: Jean Delvare Cc: Andi Shyti Cc: Nick Desaulniers Acked-by: Wolfram Sang Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

c509ebdb - i2c: amd-asf: Add ACPI support for AMD ASF Controller

Mon, 23 Sep 2024 08:03:57 +0000

i2c: amd-asf: Add ACPI support for AMD ASF ControllerThe AMD ASF controller is presented to the operating system as an ACPIdevice. The AMD ASF driver can use ACPI to obtain information about theASF controller's attributes, such as the ASF address space and interruptnumber, and to handle ASF interrupts.Currently, the piix4 driver assumes that a specific port address isdesignated for AUX operations. However, with the introduction of ASF, thesame port address may also be used by the ASF controller. Therefore, acheck needs to be added to ensure that if ASF is advertised and enabled inACPI, the AUX port should not be configured.Reviewed-by: Andy Shevchenko Co-developed-by: Sanket Goswami Signed-off-by: Sanket Goswami Signed-off-by: Shyam Sundar S K Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

6894f640 - i2c: Congatec Board Controller i2c bus driver

Tue, 01 Oct 2024 11:53:29 +0000

i2c: Congatec Board Controller i2c bus driverAdd i2c support for the Congatec Board Controller.The Board Controller has two i2c busses, a General Purpose bus and a PowerManagement bus.Acked-by: Andi Shyti Signed-off-by: Thomas Richard Link: https://lore.kernel.org/r/20241001-congatec-board-controller-v3-3-39ceceed5c47@bootlin.comSigned-off-by: Lee Jones List of files: /linux-6.15/drivers/i2c/busses/Makefile

c7e08c81 - i2c: keba: Add KEBA I2C controller support

Fri, 09 Aug 2024 05:23:03 +0000

i2c: keba: Add KEBA I2C controller supportThe KEBA I2C controller is found in the system FPGA of KEBA PLC devices.It is used to connect EEPROMs and hardware monitoring chips. TheIt is a simple I2C controller with a fixed bus speed of 100 kbit/s. Thewhole message transmission is executed by the driver. The drivertriggers all steps over control, status and data register. There are noFIFOs or interrupts.Signed-off-by: Gerhard Engleder Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

10345887 - i2c: viai2c: turn common code into a proper module

Tue, 28 May 2024 12:06:30 +0000

i2c: viai2c: turn common code into a proper moduleThe i2c-viai2c-common.c file is used by two drivers, but is not a properabstraction and can get linked into both modules in the same configuration,which results in a warning:scripts/Makefile.build:236: drivers/i2c/busses/Makefile: i2c-viai2c-common.o is added to multiple modules: i2c-wmt i2c-zhaoxinThe other problems with this include the incorrect use of a __weak functionwhen both are built-in, and the fact that the "common" module is sprinkedwith 'if (i2c->plat == ...)' checks that have knowledge about the differencesbetween the drivers using it.Avoid the link time warning by making the common driver a proper modulewith MODULE_LICENCE()/MODULE_AUTHOR() tags, and remove the __weak functionby slightly rearranging the code.This adds a little more duplication between the two main drivers, butthose versions get more readable in the process.Fixes: a06b80e83011 ("i2c: add zhaoxin i2c controller driver")Signed-off-by: Arnd Bergmann Tested-by: Hans Hu Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

a06b80e8 - i2c: add zhaoxin i2c controller driver

Mon, 08 Apr 2024 02:54:48 +0000

i2c: add zhaoxin i2c controller driverAdd Zhaoxin I2C controller driver. It provides the access to the i2cbusses, which connects to the touchpad, eeprom, I2S, etc.Zhaoxin I2C controller has two separate busses, so may accommodate upto two I2C adapters. Those adapters are listed in the ACPI namespacewith the IIC1D17 HID, and probed by a platform driver.The driver works with IRQ mode, and supports basic I2C features. FlagsI2C_AQ_NO_ZERO_LEN and I2C_AQ_COMB_WRITE_THEN_READ are used to limitthe unsupported access.Acked-by: Wolfram Sang Signed-off-by: Hans Hu Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

5acd48fa - i2c: wmt: split out common files

Mon, 08 Apr 2024 02:54:44 +0000

i2c: wmt: split out common filesSince the I2C IP of both wmt and zhaoxin originates from VIA,it is better to separate the common code first.The common driver is named as i2c-viai2c-common.c.Old i2c-wmt.c renamed to i2c-viai2c-wmt.c.The MAINTAINERS file will be updated accordingly in upcoming commits.Reviewed-by: Wolfram Sang Signed-off-by: Hans Hu Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

f44bff19 - i2c: pasemi: split driver into two separate modules

Mon, 12 Feb 2024 11:19:04 +0000

i2c: pasemi: split driver into two separate modulesOn powerpc, it is possible to compile test both the new apple (arm) andold pasemi (powerpc) drivers for the i2c hardware at the same time,which leads to a warning about linking the same object file twice:scripts/Makefile.build:244: drivers/i2c/busses/Makefile: i2c-pasemi-core.o is added to multiple modules: i2c-apple i2c-pasemiRework the driver to have an explicit helper module, letting Kbuildtake care of whether this should be built-in or a loadable driver.Fixes: 9bc5f4f660ff ("i2c: pasemi: Split pci driver to its own file")Signed-off-by: Arnd Bergmann Reviewed-by: Sven Peter Signed-off-by: Andi Shyti List of files: /linux-6.15/drivers/i2c/busses/Makefile

bfd3824c - i2c: Add support for Intel LJCA USB I2C driver

Mon, 09 Oct 2023 06:33:23 +0000

i2c: Add support for Intel LJCA USB I2C driverImplements the I2C function of Intel USB-I2C/GPIO/SPI adapter devicenamed "La Jolla Cove Adapter" (LJCA). It communicate with LJCA I2Cmodule with specific protocol through interfaces exported by LJCAUSB driver.Signed-off-by: Wentong Wu Reviewed-by: Sakari Ailus Reviewed-by: Andi Shyti Tested-by: Hans de Goede Reviewed-by: Wolfram Sang Link: https://lore.kernel.org/r/1696833205-16716-3-git-send-email-wentong.wu@intel.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/i2c/busses/Makefile

4a55ed6f - i2c: Add GXP SoC I2C Controller

Fri, 17 Feb 2023 15:50:50 +0000

i2c: Add GXP SoC I2C ControllerThe GXP SoC supports 10 I2C engines. Each I2C engine is completelyindependent and can function both as an I2C master and I2C slave. TheI2C master can operate in a multi master environment. The engines supporta scalable speed from 8kHZ to 1.5 Mhz.Signed-off-by: Nick Hawkins Reviewed-by: Joel Stanley Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

015e61f0 - i2c: ls2x: Add driver for Loongson-2K/LS7A I2C controller

Tue, 31 Jan 2023 12:37:31 +0000

i2c: ls2x: Add driver for Loongson-2K/LS7A I2C controllerThis I2C module is integrated into the Loongson-2K SoCs and LoongsonLS7A bridge chip.Signed-off-by: Binbin Zhou Reviewed-by: Andy Shevchenko Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

36169369 - i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch

Tue, 27 Sep 2022 08:59:49 +0000

i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switchMicrochip pci1xxxx is an unmanaged PCIe3.1a Switch for Consumer,Industrial and Automotive applications. This switch has multipledownstream ports. In one of the Switch's Downstream port, thereis a multifunction endpoint for peripherals which includes an I2Chost controller. The I2C function in the endpoint operates at 100KHz,400KHz and 1 MHz and has buffer depth of 128 bytes.This patch provides the I2C controller driver for the I2C functionof the switch.Signed-off-by: Tharun Kumar P Reviewed-by: Andy Shevchenko Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

e0ca796a - i2c: Add Renesas RZ/V2M controller

Fri, 08 Jul 2022 10:03:50 +0000

i2c: Add Renesas RZ/V2M controllerYet another i2c controller from Renesas that is found on the RZ/V2M(r9a09g011) SoC. It can support only 100kHz and 400KHz operation.Signed-off-by: Phil Edworthy Reviewed-by: Biju Das Reviewed-by: Andy Shevchenko Reviewed-by: Philipp Zabel [wsa: removed superfluous class type and renamed a function]Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

64a6f1c4 - i2c: add support for microchip fpga i2c controllers

Wed, 06 Jul 2022 14:13:13 +0000

i2c: add support for microchip fpga i2c controllersAdd Microchip CoreI2C i2c controller support. This driver supports the"hard" i2c controller on the Microchip PolarFire SoC & the basic featureset for "soft" i2c controller implemtations in the FPGA fabric.Co-developed-by: Daire McNamara Signed-off-by: Daire McNamara Signed-off-by: Conor Dooley Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

bbc38ed5 - i2c: npcm: Support NPCM845

Wed, 25 May 2022 03:23:40 +0000

i2c: npcm: Support NPCM845Add NPCM8XX I2C support.The NPCM8XX uses a similar i2c module as NPCM7XX.The internal HW FIFO is larger in NPCM8XX.Signed-off-by: Tyrone Ting Acked-by: Tomer Maimon Reviewed-by: Andy Shevchenko Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

4ebf4987 - i2c: Introduce common module to instantiate CCGx UCSI

Wed, 05 Jan 2022 14:19:31 +0000

i2c: Introduce common module to instantiate CCGx UCSIIntroduce a common module to provide an API to instantiate UCSI devicefor Cypress CCGx Type-C controller. Individual bus drivers need to selectthis one on demand.Signed-off-by: Andy Shevchenko Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile

78d5e9e2 - i2c: designware: Add AMD PSP I2C bus support

Tue, 08 Feb 2022 14:12:18 +0000

i2c: designware: Add AMD PSP I2C bus supportImplement an I2C controller sharing mechanism between the host (kernel)and PSP co-processor on some platforms equipped with AMD Cezanne SoC.On these platforms we need to implement "software" i2c arbitration.Default arbitration owner is PSP and kernel asks for acquire as wellas inform about release of the i2c bus via mailbox mechanism. +---------+ <- ACQUIRE | | +---------| CPU |\ | | | \ +----------+ SDA | +---------+ \ | |-------MAILBOX +--> | I2C-DW | SCL | +---------+ | |------- | | | +----------+ +---------| PSP | <- ACK | | +---------+ +---------+ <- RELEASE | | +---------| CPU | | | | +----------+ SDA | +---------+ | |-------MAILBOX +--> | I2C-DW | SCL | +---------+ / | |------- | | | / +----------+ +---------| PSP |/ <- ACK | | +---------+The solution is similar to i2c-designware-baytrail.c implementation, wherewe are using a generic i2c-designware-* driver with a small "wrapper".In contrary to baytrail semaphore implementation, beside internalacquire_lock() and release_lock() methods we are also applying quirks tolock_bus() and unlock_bus() global adapter methods. With this in placeall i2c clients drivers may lock i2c bus for a desired number of i2ctransactions (e.g. write-wait-read) without being aware of that such busis shared with another entity.Modify i2c_dw_probe_lock_support() to select correct semaphoreimplementation at runtime, since now we have more than one available.Configure new matching ACPI ID "AMDI0019" and registerARBITRATION_SEMAPHORE flag in order to distinguish setup with PSParbitration.Add myself as a reviewer for I2C DesignWare in order to help with reviewingand testing possible changes touching new i2c-designware-amdpsp.c module.Signed-off-by: Jan Dabros Reviewed-by: Andy Shevchenko Acked-by: Jarkko Nikula Tested-by: Jarkko Nikula [wsa: removed unneeded blank line and curly braces]Signed-off-by: Wolfram Sang List of files: /linux-6.15/drivers/i2c/busses/Makefile