linux-dev/drivers/i2c/busses/Kconfig, branch linus/master

Merge tag 'irq-api-2022-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into i2c/for-mergewindow

2022-02-23T13:14:15Z

Provide a tag for maintainers to pull the generic_handle_irq_safe() API.

i2c: qup: allow COMPILE_TEST

2022-02-15T09:13:52Z

Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang

i2c: imx: allow COMPILE_TEST

2022-02-15T09:13:49Z

Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang Acked-by: Oleksij Rempel

i2c: cadence: allow COMPILE_TEST

2022-02-15T09:13:44Z

Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang Acked-by: Michal Simek

i2c: designware-pci: Switch to use i2c_new_ccgx_ucsi()

2022-02-15T09:05:07Z

Instead of open coded variant switch to use i2c_new_ccgx_ucsi(). Signed-off-by: Andy Shevchenko Acked-by: Jarkko Nikula Signed-off-by: Wolfram Sang

i2c: nvidia-gpu: Switch to use i2c_new_ccgx_ucsi()

2022-02-15T09:04:57Z

Instead of open coded variant switch to use i2c_new_ccgx_ucsi(). Signed-off-by: Andy Shevchenko Signed-off-by: Wolfram Sang

i2c: Introduce common module to instantiate CCGx UCSI

2022-02-15T09:04:53Z

Introduce a common module to provide an API to instantiate UCSI device for Cypress CCGx Type-C controller. Individual bus drivers need to select this one on demand. Signed-off-by: Andy Shevchenko Signed-off-by: Wolfram Sang

i2c: i801: Add support for Intel Raptor Lake PCH-S

2022-02-15T09:03:40Z

Add SMBus PCI ID on Intel Raptor Lake PCH-S. Signed-off-by: Jarkko Nikula Reviewed-by: Jean Delvare Signed-off-by: Wolfram Sang

i2c: brcmstb: allow compiling on BCM4908

2022-02-11T17:34:38Z

BCM4908 SoCs use the same I2C hardware block as STB and BCM63xx devices. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Signed-off-by: Wolfram Sang

i2c: designware: Add AMD PSP I2C bus support

2022-02-11T14:38:23Z

Implement 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 well as 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, where we are using a generic i2c-designware-* driver with a small "wrapper". In contrary to baytrail semaphore implementation, beside internal acquire_lock() and release_lock() methods we are also applying quirks to lock_bus() and unlock_bus() global adapter methods. With this in place all i2c clients drivers may lock i2c bus for a desired number of i2c transactions (e.g. write-wait-read) without being aware of that such bus is shared with another entity. Modify i2c_dw_probe_lock_support() to select correct semaphore implementation at runtime, since now we have more than one available. Configure new matching ACPI ID "AMDI0019" and register ARBITRATION_SEMAPHORE flag in order to distinguish setup with PSP arbitration. Add myself as a reviewer for I2C DesignWare in order to help with reviewing and 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