This patch series adds support for Diolan USB-I2C/GPIO Master Adapter DLN-2. Details about device can be found here: https://www.diolan.com/i2c/i2c_interface.html. Changes since v3: * Mostly addressing latest review comments from Johan * MFD driver: more message size checks for responses, switched to using unsigned for buffer sizes and use const void * for output buffer for the dln2_transfer() API, more codying style cleanups, renamed DLN2_HANDLE_GPIO_EVENT to DLN2_HANDLE_EVENT * MFD driver: turns out the RX buf size was too low for certain I2C drivers (I was seeing request up to 257 bytes), so increase it from 64 to 512 * GPIO driver: revert the retry chip remove change, as there are still issues if the gpio if exported to sysfs; coding style cleanups, correctly clamp no pin numbers to 32, use devm_kzalloc and simplify the error path in probe, cache pin direction to save one transfer when reading the pin value * I2C driver: add an i2c port parameter in the platform data (although only one port seems to be supported), make frequency a sysfs attribute instead of a module paramter, coding style cleanups, use devm_kzalloc and simplify the error path in probe, move the I2C buffers from the stack to the dln2_i2c structure (it is enough as we can have only one transfer at a time on the i2c adapter) Changes since v2: * MFD driver: fix a few obsolete comments for the DLN2 I/O API * GPIO driver: retry the chip remove call if -EBUSY is returned, see the comments in dln2_do_remove for more details; also removed a redundant !dln2->pdev check from dln2_irq_event - we do it in dln2_transfer already * I2C driver: add I2C_FUNC_SMBUS_I2C_BLOCK support Changes since v1: * rewrite the drivers as an MFD * rewrite the irq part of the gpio driver to use GPIOLIB_IRQCHIP * cleanup the I/O interface * various fixes and cleanps: check received message sizes before parsing, error handling for usb_submit_urb, check URB status, use single bit manipulation functions instead of bitmap_*, move GFP_KERNEL URB submit away from under lock Daniel Baluta (1): gpio: add support for the Diolan DLN-2 USB GPIO driver Laurentiu Palcu (1): i2c: add support for Diolan DLN-2 USB-I2C adapter Octavian Purdila (1): mfd: add support for Diolan DLN-2 devices drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-dln2.c | 529 ++++++++++++++++++++++++++++++++ drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-dln2.c | 390 ++++++++++++++++++++++++ drivers/mfd/Kconfig | 9 + drivers/mfd/Makefile | 1 + drivers/mfd/dln2.c | 681 ++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/dln2.h | 71 +++++ 10 files changed, 1705 insertions(+) create mode 100644 drivers/gpio/gpio-dln2.c create mode 100644 drivers/i2c/busses/i2c-dln2.c create mode 100644 drivers/mfd/dln2.c create mode 100644 include/linux/mfd/dln2.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
