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fwupd/plugins/colorhug
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Richard Hughes aaa77c6f51 Allow adding and removing custom flags on devices 
The CustomFlags feature is a bit of a hack where we just join the flags
and store in the device metadata section as a string. This makes it
inefficient to check if just one flag exists as we have to split the
string to a temporary array each time.

Rather than adding to the hack by splitting, appending (if not exists)
then joining again, store the flags in the plugin privdata directly.

This allows us to support negating custom properties (e.g. ~hint) and
also allows quirks to append custom values without duplicating them on
each GUID match, e.g.

[USB\VID_17EF&PID_307F]
Plugin = customflag1
[USB\VID_17EF&PID_307F&HUB_0002]
Flags = customflag2

...would result in customflag1,customflag2 which is the same as you'd
get from an enumerated device flag doing the same thing.
2021-06-23 07:59:15 +01:00
..
colorhug.quirk Simplify the quirk file format 2021-03-03 08:30:34 +00:00
fu-colorhug-common.c Only include the start year in the copyright header 2021-01-07 14:48:16 +00:00
fu-colorhug-common.h Only include the start year in the copyright header 2021-01-07 14:48:16 +00:00
fu-colorhug-device.c Allow adding and removing custom flags on devices 2021-06-23 07:59:15 +01:00
fu-colorhug-device.h trivial: fixup includes for a variety of plugins 2021-06-14 10:12:45 +01:00
fu-plugin-colorhug.c trivial: fixup includes for a variety of plugins 2021-06-14 10:12:45 +01:00
meson.build Move the plugin build logic to the plugins themselves 2021-02-18 14:46:20 +00:00
README.md Add a new internal flag to opt-in to GUID matching 2021-02-25 15:47:25 +00:00

README.md

ColorHug Support

Introduction

The ColorHug is an affordable open source display colorimeter built by Hughski Limited. The USB device allows you to calibrate your screen for accurate color matching.

ColorHug versions 1 and 2 support a custom HID-based flashing protocol, but version 3 (ColorHug+) has now switched to DFU.

Firmware Format

The daemon will decompress the cabinet archive and extract a firmware blob in a packed binary file format.

This plugin supports the following protocol ID:

  • com.hughski.colorhug

GUID Generation

These devices use the standard USB DeviceInstanceId values, e.g.

  • USB\VID_273F&PID_1001&REV_0001
  • USB\VID_273F&PID_1001
  • USB\VID_273F

Update Behavior

The device usually presents in runtime mode, but on detach re-enumerates with a different USB PID in a bootloader mode. On attach the device again re-enumerates back to the runtime mode.

For this reason the REPLUG_MATCH_GUID internal device flag is used so that the bootloader and runtime modes are treated as the same device.

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x273F

External interface access

This plugin requires read/write access to /dev/bus/usb.