Using the new on_hid_hw_open and on_hid_hw_close functions to disable the touchpad on firmware level while not being in use. This safes some battery and triggers touchpad-disabled-leds hardwired to the touchpads firmware, that exist for example on some TongFang barebones. For a lengthy discussion with all the details see https://gitlab.freedesktop.org/libinput/libinput/-/issues/558 Signed-off-by: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx> --- drivers/hid/hid-multitouch.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 82900857bfd87..7289c04f47f17 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -1884,6 +1884,16 @@ static void mt_remove(struct hid_device *hdev) hid_hw_stop(hdev); } +static void mt_on_hid_hw_open(struct hid_device *hdev) +{ + mt_set_modes(hdev, HID_LATENCY_NORMAL, TOUCHPAD_REPORT_ALL); +} + +static void mt_on_hid_hw_close(struct hid_device *hdev) +{ + mt_set_modes(hdev, HID_LATENCY_HIGH, TOUCHPAD_REPORT_NONE); +} + /* * This list contains only: * - VID/PID of products not working with the default multitouch handling @@ -2351,5 +2361,7 @@ static struct hid_driver mt_driver = { .suspend = pm_ptr(mt_suspend), .reset_resume = pm_ptr(mt_reset_resume), .resume = pm_ptr(mt_resume), + .on_hid_hw_open = mt_on_hid_hw_open, + .on_hid_hw_close = mt_on_hid_hw_close, }; module_hid_driver(mt_driver); -- 2.43.0
