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59 lines
1.2 KiB
Markdown
59 lines
1.2 KiB
Markdown
# Wacom RAW
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## Introduction
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This plugin updates integrated Wacom AES and EMR devices. They are typically
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connected using I²C and not USB.
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## GUID Generation
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The HID DeviceInstanceId values are used, e.g. `HIDRAW\VEN_056A&DEV_4875`.
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## Firmware Format
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The daemon will decompress the cabinet archive and extract a firmware blob in
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Intel HEX file format.
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This plugin supports the following protocol ID:
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* com.wacom.raw
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## Quirk Use
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This plugin uses the following plugin-specific quirks:
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### WacomI2cFlashBlockSize
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Block size to transfer firmware.
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Since: 1.2.4
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### WacomI2cFlashBaseAddr
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Base address for firmware.
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Since: 1.2.4
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### WacomI2cFlashSize
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Maximum size of the firmware zone.
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Since: 1.2.4
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## Update Behavior
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The device usually presents in runtime mode, but on detach re-enumerates with a
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different HIDRAW PID in a bootloader mode. On attach the device re-enumerates
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back to the runtime mode.
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For this reason the `REPLUG_MATCH_GUID` internal device flag is used so that
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the bootloader and runtime modes are treated as the same device.
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## Vendor ID Security
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The vendor ID is set from the udev vendor, in this instance set to `HIDRAW:0x056A`
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## External Interface Access
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This plugin requires ioctl `HIDIOCSFEATURE` access.
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