fwupd/plugins/synaptics-cxaudio/README.md

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Conexant Audio Support
======================
Introduction
------------
This plugin is used to update a small subset of Conexant (now owned by Synaptics)
audio devices.
Firmware Format
---------------
The daemon will decompress the cabinet archive and extract a firmware blob in
a modified SREC file format.
This plugin supports the following protocol ID:
* com.synaptics.synaptics-cxaudio
GUID Generation
---------------
These devices use the standard USB DeviceInstanceId values, e.g.
* `USB\VID_17EF&PID_3083&REV_0001`
* `USB\VID_17EF&PID_3083`
* `USB\VID_17EF`
These devices also use custom GUID values, e.g.
* `SYNAPTICS_CXAUDIO\CX2198X`
* `SYNAPTICS_CXAUDIO\CX21985`
Vendor ID Security
------------------
The vendor ID is set from the USB vendor, in this instance set to `USB:0x17EF`
Quirk Use
---------
This plugin uses the following plugin-specific quirks:
| Quirk | Description | Minimum fwupd version |
|----------------------------|----------------------------------|-----------------------|
| `ChipIdBase` | Base integer for ChipID | 1.3.2 |
| `IsSoftwareResetSupported` | If the chip supports self-reset | 1.3.2 |
| `EepromPatchValidAddr` | Address of patch location #1 | 1.3.2 |
| `EepromPatch2ValidAddr` | Address of patch location #2 | 1.3.2 |