Add driver for Intel La Jolla Cove Adapter (LJCA) device. This is a USB-GPIO, USB-I2C and USB-SPI device. We add 4 drivers to support this device: a USB driver, a GPIO chip driver, a I2C controller driver and a SPI controller driver. --- v3: - spi: make ljca_spi_transfer inline and fix an endian issue. v2: - ljca: remove reset command. - gpio/spi/i2c: add `default MFD_LJCA` in Kconfig. - gpio: add "select GPIOLIB_IRQCHIP" in Kconfig. Ye Xiang (5): mfd: Add support for Intel LJCA device gpio: Add support for Intel LJCA USB GPIO driver i2c: Add support for Intel LJCA USB I2C driver spi: Add support for Intel LJCA USB SPI driver Documentation: Add ABI doc for attributes of LJCA device .../ABI/testing/sysfs-bus-usb-devices-ljca | 22 + drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-ljca.c | 454 ++++++++ drivers/i2c/busses/Kconfig | 11 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ljca.c | 357 +++++++ drivers/mfd/Kconfig | 13 + drivers/mfd/Makefile | 1 + drivers/mfd/ljca.c | 969 ++++++++++++++++++ drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-ljca.c | 291 ++++++ include/linux/mfd/ljca.h | 95 ++ 14 files changed, 2239 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-usb-devices-ljca create mode 100644 drivers/gpio/gpio-ljca.c create mode 100644 drivers/i2c/busses/i2c-ljca.c create mode 100644 drivers/mfd/ljca.c create mode 100644 drivers/spi/spi-ljca.c create mode 100644 include/linux/mfd/ljca.h -- 2.34.1
