Files
linux/drivers
Bartłomiej Maryńczak 293c485cba HID: i2c-hid: Delayed i2c resume wakeup for 0x0d42 Goodix touchpad
Patch for Goodix 27c6:0d42 touchpads found in Inspiron 5515 laptops.

After resume from suspend, one can communicate with this device just fine.
We can read data from it or request a reset,
but for some reason the interrupt line will not go up
when new events are available.
(it can correctly respond to a reset with an interrupt tho)

The only way I found to wake this device up
is to send anything to it after ~1.5s mark,
for example a simple read request, or power mode change.

In this patch, I simply delay the resume steps with msleep,
this will cause the set_power request to happen after
the ~1.5s barrier causing the device to resume its event interrupts.

Sleep was used rather than delayed_work
to make this workaround as non-invasive as possible.

[jkosina@suse.com: shortlog update]
Signed-off-by: Bartłomiej Maryńczak <marynczakbartlomiej@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2024-10-18 12:32:06 +02:00
..
2024-09-16 15:24:59 +02:00
2024-09-02 12:12:41 +02:00
2024-08-28 21:54:51 +01:00
2024-09-09 12:22:06 +02:00
2024-09-17 08:53:17 +02:00