| commit | 6a2418ec50e2ba4791a0cc24d1471b73bdf47af2 | [log] [tgz] |
|---|---|---|
| author | Pablo Ceballos <pceballos@google.com> | Wed Oct 16 04:14:52 2024 |
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | Wed Oct 16 16:30:03 2024 |
| tree | cc41e8752b6c08bee5e826b92365e4b25a96d1b9 | |
| parent | d8f5ecc3111447b119d3170fabf87667dd30e9d9 [diff] |
cfm-device-monitor: Update OWNERS to CfM team BUG=None TEST=CQ Change-Id: I038da4adf368636cfbb4da8e1e34f37fd4c8324c Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/cfm-device-monitor/+/5936236 Commit-Queue: Richard Yeh <rcy@google.com> Tested-by: Pablo Ceballos <pceballos@chromium.org> Reviewed-by: Richard Yeh <rcy@google.com> Auto-Submit: Pablo Ceballos <pceballos@chromium.org>
Source code for CFM peripheral monitors which check the status of CFM devices and guarantee their liveness.
The MIMO touch panel is a USB 2.0 device that contains a 1280x800 display and a touch panel.
# Example lsusb output
Bus 001 Device 006: ID 17e9:416d DisplayLink MIMO VUE HD
Bus 001 Device 005: ID 266e:0110 Silicon Integrated Systems SiS HID Touch Controller
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 6, If 0, Class=Vendor Specific Class, Driver=udl, 480M
|__ Port 3: Dev 6, If 1, Class=Human Interface Device, Driver=usbhid, 480M
Each minute, the mimo-monitor checks that both logical USB devices are present, and attempts to reset them if not.
SiS Monitor resets are 6-byte messages sent to the /dev/hidraw# endpoint. This is like an application-level disable/enable.
If you echo '1-2.1' > /sys/bus/usb/drivers/usb/unbind, then the device will disappear from lsusb -t but still be visible on lsusb. This is a lower-level unbind, but not to the level of re-enumeration.