[PATCH v5 0/5] Add Intel LJCA device driver

Ye Xiang
2023-03-12T19:04:37Z

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.

---
v5:
- move ljca.h from drivers/include/mfd to drivers/include/usb.
- ljca: fix a potential memory leak issue.
- add a blank line before return to adust to kernel code style.
- ljca: sysfs: split "cmd" to "ljca_dfu" and "ljca_trace_level".

v4:
- move ljca.c from drivers/mfd to drivers/usb/misc folder.
- fix index warning in sysfs-bus-devices-ljca.

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):
usb: 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 | 36 +
drivers/gpio/Kconfig | 12 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-ljca.c | 459 ++++++++
drivers/i2c/busses/Kconfig | 11 +
drivers/i2c/busses/Makefile | 1 +
drivers/i2c/busses/i2c-ljca.c | 355 +++++++
drivers/spi/Kconfig | 11 +
drivers/spi/Makefile | 1 +
drivers/spi/spi-ljca.c | 293 +++++
drivers/usb/misc/Kconfig | 13 +
drivers/usb/misc/Makefile | 1 +
drivers/usb/misc/ljca.c | 998 ++++++++++++++++++
include/linux/usb/ljca.h | 95 ++
14 files changed, 2287 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/spi/spi-ljca.c
create mode 100644 drivers/usb/misc/ljca.c
create mode 100644 include/linux/usb/ljca.h

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2.34.1