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ec0496b47a
fwupd/plugins/synaptics-mst
History
Mario Limonciello ec0496b47a Make libfwupdplugin an internal library instead 
This drops the requirement on us being so strict on a particular ABI version,
and also more strongly discourages out of tree plugin development.

We should still strive to keep API stable, and as such keep a symbol map still.

Use rpath instead for the static plugins, and set the plugin install directory
to just fwupd-$ABI$ as we're storing more than just plugins here now.
2022-09-28 10:04:12 +01:00
..
tests Move the fuzzing files into the plugin directories 2021-10-22 15:24:05 +01:00
fu-plugin-synaptics-mst.c Add plugin quirk keys earlier in the startup process 2022-05-09 11:13:52 +01:00
fu-self-test.c trivial: set firwmare attributes class directory for all tests 2022-07-28 17:30:57 -05:00
fu-synaptics-mst-common.c trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-synaptics-mst-common.h trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-synaptics-mst-connection.c trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-synaptics-mst-connection.h Be smarter and include less header files per source file 2022-06-14 14:36:52 -05:00
fu-synaptics-mst-device.c synaptics-mst: Check the firmware payload size when updating cayenne 2022-09-09 19:22:58 +01:00
fu-synaptics-mst-device.h trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-synaptics-mst-firmware.c Set the firmware contents even when subclassing ->parse() 2022-09-10 09:16:05 +01:00
fu-synaptics-mst-firmware.h trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
meson.build Make libfwupdplugin an internal library instead 2022-09-28 10:04:12 +01:00
README.md trivial: update markdown for pre-commit style 2021-07-18 14:42:47 -05:00
synaptics-mst-evb.quirk Simplify the quirk file format 2021-03-03 08:30:34 +00:00
synaptics-mst.quirk synaptics-mst: Only probe devices that have opted-in 2021-09-03 21:14:37 +01:00

README.md

Synaptics MST

This plugin supports querying and flashing Synaptics MST hubs used in Dell systems and docks.

Firmware Format

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

This plugin supports the following protocol ID:

  • com.synaptics.mst

GUID Generation

These devices use custom GUID values, e.g.

  • MST-$(board-ID)
  • MST-$(device_kind)-$(chip-ID)-$(board-ID)
  • MST-$(device_kind)-$(board-ID)
  • MST-$(device_kind)

Please refer to the plugin source for more details about how the GUID is constructed for specific hardware.

Update Behavior

The firmware is deployed when the device is in normal runtime mode, and the device will reset when the new firmware has been written. On some hardware the MST device may not enumerate if there is no monitor actually plugged in.

Vendor ID Security

The vendor ID is set from the PCI vendor, for example set to DRM_DP_AUX_DEV:0x$(vid)

Requirements

(Kernel) DP Aux Interface

Kernel 4.6 introduced an DRM DP Aux interface for manipulation of the registers needed to access an MST hub. This patch can be backported to earlier kernels: https://github.com/torvalds/linux/commit/e94cb37b34eb8a88fe847438dba55c3f18bf024a

libsmbios

At compilation time and runtime you will need libsmbios_c version 2.3.0 or later

If you don't want or need this functionality you can use the --disable-dell option.

Usage

Supported devices will be displayed in # fwupdmgr get-devices output.

Here is an example output from a Dell WD15 dock:

Dell WD15/TB16 wired Dock Synaptics VMM3332
  Guid:                 653cd006-5433-57db-8632-0413af4d3fcc
  DeviceID:             MST-1-1-0-0
  Plugin:               synaptics_mst
  Flags:                allow-online
  Version:              3.10.002
  Created:              2017-01-13
  Modified:             2017-01-13
  Trusted:              none

Payloads can be flashed just like any other plugin from LVFS.

Supported devices

Not all Dell systems or accessories contain MST hubs. Here is a sample list of systems known to support them however:

  • Dell WD15 dock
  • Dell TB16 dock
  • Dell TB18DC
  • Latitude E5570
  • Latitude E5470
  • Latitude E5270
  • Latitude E7470
  • Latitude E7270
  • Latitude E7450
  • Latitude E7250
  • Latitude E5550
  • Latitude E5450
  • Latitude E5250
  • Latitude Rugged 5414
  • Latitude Rugged 7214
  • Latitude Rugged 7414

External Interface Access

This plugin requires read/write access to /dev/drm_dp_aux*.