Commits
Benjamin Tissoires committed 8eb92e5c913
Input: psmouse - add support for SMBus companions This provides glue between PS/2 devices that enumerate the RMI4 devices and Elan touchpads to the RMI4 (or Elan) SMBus driver. The SMBus devices keep their PS/2 connection alive. If the initialization process goes too far (psmouse_activate called), the device disconnects from the I2C bus and stays on the PS/2 bus, that is why we explicitly disable PS/2 device reporting (by calling psmouse_deactivate) before trying to register SMBus companion device. The HID over I2C devices are enumerated through the ACPI DSDT, and their PS/2 device also exports the InterTouch bit in the extended capability 0x0C. However, the firmware keeps its I2C connection open even after going further in the PS/2 initialization. We don't need to take extra precautions with those device, especially because they block their PS/2 communication when HID over I2C is used. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>