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HID: ft260: add usb hid to i2c host bridge driver

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The FTDI FT260 chip implements USB to I2C/UART bridges through two
USB HID class interfaces. The first - for I2C, and the second for UART.
Each interface is independent, and the kernel detects it as a separate
USB hidraw device.

This commit adds I2C host adapter support.

Signed-off-by: Michael Zaidman <michael.zaidman@gmail.com>
Tested-by: Aaron Jones (FTDI-UK) <aaron.jones@ftdichip.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Michael Zaidman 2021-02-19 18:36:44 +02:00 committed by Jiri Kosina
parent 69aea9d284
commit 6a82582d9f
5 changed files with 1073 additions and 0 deletions
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7
MAINTAINERS
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@ -7278,6 +7278,13 @@ F: fs/verity/
F: include/linux/fsverity.h
F: include/uapi/linux/fsverity.h
FT260 FTDI USB-HID TO I2C BRIDGE DRIVER
M: Michael Zaidman <michael.zaidman@gmail.com>
L: linux-i2c@vger.kernel.org
L: linux-input@vger.kernel.org
S: Maintained
F: drivers/hid/hid-ft260.c
FUJITSU LAPTOP EXTRAS
M: Jonathan Woithe <jwoithe@just42.net>
L: platform-driver-x86@vger.kernel.org

11
drivers/hid/Kconfig
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@ -351,6 +351,17 @@ config HID_EZKEY
help
Support for Ezkey BTC 8193 keyboard.
config HID_FT260
tristate "FTDI FT260 USB HID to I2C host support"
depends on USB_HID && HIDRAW && I2C
help
Provides I2C host adapter functionality over USB-HID through FT260
device. The customizable USB descriptor fields are exposed as sysfs
attributes.
To compile this driver as a module, choose M here: the module
will be called hid-ft260.
config HID_GEMBIRD
tristate "Gembird Joypad"
depends on HID

1
drivers/hid/Makefile
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@ -46,6 +46,7 @@ obj-$(CONFIG_HID_ELAN) += hid-elan.o
obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
obj-$(CONFIG_HID_ELO) += hid-elo.o
obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
obj-$(CONFIG_HID_FT260) += hid-ft260.o
obj-$(CONFIG_HID_GEMBIRD) += hid-gembird.o
obj-$(CONFIG_HID_GFRM) += hid-gfrm.o
obj-$(CONFIG_HID_GLORIOUS) += hid-glorious.o

1053
drivers/hid/hid-ft260.c Normal file
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File diff suppressed because it is too large Load Diff

1
drivers/hid/hid-ids.h
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@ -430,6 +430,7 @@
#define USB_VENDOR_ID_FUTURE_TECHNOLOGY 0x0403
#define USB_DEVICE_ID_RETRODE2 0x97c1
#define USB_DEVICE_ID_FT260 0x6030
#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100