Add driver for Intel La Jolla Cove Adapter (LJCA) device. This IO-expander expands additional functions to the host system such as GPIO, I2C and SPI with USB host interface. We add 4 drivers to support this device: a USB driver, a GPIO chip driver, a I2C controller driver and a SPI controller driver. --- resend to fix build error: implicit declaration of function 'acpi_dev_clear_dependencies' v13: - make ljca-usb more robust with the help of Hans de Goede - call acpi_dev_clear_dependencies() to mark _DEP ACPI dependencies on the I2C controller as satisfied, and patch is from Hans de Goede v12: - switch dev_err to dev_dbg for i2c-ljca driver - avoid err printing because of calling usb_kill_urb when attempts to resubmit the rx urb v11: - switch dev_err to dev_dbg for i2c-ljca driver - remove message length check because of defined quirk structure - remove I2C_FUNC_SMBUS_EMUL support v10: - remove ljca_i2c_format_slave_addr - remove memset before write write w_packet - make ljca_i2c_stop void and print err message in case failure - use dev_err_probe in ljca_i2c_probe function v9: - overhaul usb-ljca driver to make it more structured and easy understand - fix memory leak issue for usb-ljca driver - add spinlock to protect tx_buf and ex_buf - change exported APIs for usb-ljca driver - unify prefix for structures and functions for i2c-ljca driver - unify prefix for structures and functions for spi-ljca driver - unify prefix for structures and functions for gpio-ljca driver - update gpio-ljca, i2c-ljca and spi-ljca drivers according to usb-ljca's changes Wentong Wu (4): usb: Add support for Intel LJCA device i2c: Add support for Intel LJCA USB I2C driver spi: Add support for Intel LJCA USB SPI driver gpio: update Intel LJCA USB GPIO driver drivers/gpio/Kconfig | 4 +- drivers/gpio/gpio-ljca.c | 246 +++++++------ drivers/i2c/busses/Kconfig | 11 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ljca.c | 335 +++++++++++++++++ drivers/spi/Kconfig | 11 + drivers/spi/Makefile | 1 + drivers/spi/spi-ljca.c | 297 +++++++++++++++ drivers/usb/misc/Kconfig | 14 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usb-ljca.c | 834 ++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/ljca.h | 113 ++++++ 12 files changed, 1763 insertions(+), 105 deletions(-) create mode 100644 drivers/i2c/busses/i2c-ljca.c create mode 100644 drivers/spi/spi-ljca.c create mode 100644 drivers/usb/misc/usb-ljca.c create mode 100644 include/linux/usb/ljca.h -- 2.7.4
