0f2ff7e540
Use the default mode for reading the keyboard scan matrix when being used as a keyboard. There should be no perceived change in behavior, but should make the code easier to understand. Note: `KSO[17:16]` are configured by `GPCRC` on boards that use them. They are now set to alternate function to use in KBS mode rather than GPIO mode, with the pull-up enabled to prevent them from floating when configured as open-drain. As part of this change, we now only read the hardware matrix state once upfront, instead of on every iteration through the loop applying the logic. Tested by verifying that typing still works on darp9. Signed-off-by: Tim Crawford <tcrawford@system76.com>
System76 EC
System76 EC is a GPLv3 licensed embedded controller firmware for System76 laptops.
Documentation
- Supported embedded controllers
- Flashing firmware
- Debugging
- Creating a custom keyboard layout
- Development environment
- Adding a new board
Quickstart
Install dependencies using the provided script.
./scripts/deps.sh
If rustup was installed as part of this, then the correct cargo will not be
available in the running session. Start a new shell session or source the env
file to update PATH.
source $HOME/.cargo/env
Then build the firmware for your laptop model.
make BOARD=system76/<model>
See Flashing for how to use the new firmware image.
Releases
The EC firmware itself does not have tagged releases. Any commit of this repo may be used as a part of a System76 Open Firmware release.
In official releases the EC shares the same version as the BIOS firmware. Run the follow command from firmware-open to determine the corresponding EC commit for a release.
git ls-tree <release_hash> ec
Legal
System76 EC is copyright System76 and contributors.
System76 EC firmware is made available under the terms of the GNU General Public License, version 3. See LICENSE for details.
- firmware: GPL-3.0-only
- ecflash: LGPL-2.1-or-later
- ecsim: MIT
- ectool: MIT
Datasheets for the ITE embedded controllers used in System76 laptops cannot be shared outside of company. (However, the IT81202E datasheet is publicly available. While it uses a different core, a significant portion of the register information is the same as IT85878E/IT5570E.)