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HID: add hid-cp2112 driver

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This patch adds support for the Silicon Labs CP2112 "Single-Chip HID USB to
SMBus Master Bridge."

This is a HID device driver which registers as an i2c adapter and gpiochip to
expose these functions of the CP2112. The customizable USB descriptor fields
are exposed as sysfs attributes.  The SMBus byte-read, byte-data-read/write,
and word-data-read transfer modes have been tested by talking to an i2c
sensor.  The GPIO functions and USB descriptor field programming have also
been tested.

Signed-off-by: David Barksdale <dbarksdale@uplogix.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Barksdale
2014-02-04 12:42:48 -06:00
committed by Jiri Kosina
parent 4988abf174
commit e932d81786
5 changed files with 1078 additions and 0 deletions
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1
drivers/hid/hid-ids.h
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@@ -240,6 +240,7 @@
#define USB_VENDOR_ID_CYGNAL 0x10c4
#define USB_DEVICE_ID_CYGNAL_RADIO_SI470X 0x818a
#define USB_DEVICE_ID_CYGNAL_CP2112 0xea90
#define USB_VENDOR_ID_CYPRESS 0x04b4
#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001