On Wed, 10 Mar 2021, Maximilian Luz wrote: > This series adds support for the Surface System Aggregator Module (SSAM) > HID transport subsystem. > > The SSAM is an embedded controller, found on 5th- and later generation > Microsoft Surface devices. On some of these devices (specifically > Surface Laptops 1, 2, and 3, as well as Surface Book 3), built-in input > devices are connected via the SSAM. These devices communicate (mostly) > via normal HID reports, so adding support for them is (mostly) just a > matter of implementing an HID transport driver. > > SSAM actually has two different HID interfaces: One (legacy) interface > used on Surface Laptops 1 and 2, and a newer interface for the rest. The > newer interface allows for multiple HID devices to be addressed and is > implemented in the first patch. The older interface only allows a single > HID device to be connected and, furthermore, only allows a single output > report, specifically one for the caps lock LED. This is implemented in > the second patch. > > See the commit messages of the respective patches for more details. Now queued in hid.git#for-5.13/surface-system-aggregator-intergration Thanks, -- Jiri Kosina SUSE Labs
