diff options
| author |   Werner Sembach <wse@tuxedocomputers.com> | 2025-02-11 14:39:06 +0100 |
|---|---|---|
| committer |   Benjamin Tissoires <bentiss@kernel.org> | 2025-05-13 15:59:29 +0200 |
| commit | 6a9e76f75c1a8fffbf45d4665daaf24e7d30095f (patch) | |
| tree | b808df8954ad01c99d8f27cabab7f24cfe2962bc /drivers/hid | |
| parent | HID: core: Add functions for HID drivers to react on first open and last close call (diff) | |
| download | linux-rng-6a9e76f75c1a8fffbf45d4665daaf24e7d30095f.tar.xz linux-rng-6a9e76f75c1a8fffbf45d4665daaf24e7d30095f.zip | |
HID: multitouch: Disable touchpad on firmware level while not in use
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@tuxedocomputers.com>
Link: https://patch.msgid.link/20250211133950.422232-2-wse@tuxedocomputers.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index e50887a6d22c..a8d0ef04d5aa 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -1887,6 +1887,16 @@ 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 @@ -2354,5 +2364,7 @@ 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); |