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| author | Bartłomiej Maryńczak <marynczakbartlomiej@gmail.com> | 2024-10-08 00:25:42 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2024-10-18 12:32:06 +0200 |
| commit | 293c485cbac2607595fdaae2b1fb390fc7b2d014 (patch) | |
| tree | 4eebe02a221a7d19acba295be19ce12a09d30422 /drivers/hid/hid-ids.h | |
| parent | 2934b12281abf4eb5f915086fd5699de5c497ccd (diff) | |
| download | linux-293c485cbac2607595fdaae2b1fb390fc7b2d014.tar.gz linux-293c485cbac2607595fdaae2b1fb390fc7b2d014.zip | |
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>
Diffstat (limited to 'drivers/hid/hid-ids.h')
| -rw-r--r-- | drivers/hid/hid-ids.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 8a991b30e3c6..25f96494700d 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -509,6 +509,7 @@ #define I2C_DEVICE_ID_GOODIX_01E8 0x01e8 #define I2C_DEVICE_ID_GOODIX_01E9 0x01e9 #define I2C_DEVICE_ID_GOODIX_01F0 0x01f0 +#define I2C_DEVICE_ID_GOODIX_0D42 0x0d42 #define USB_VENDOR_ID_GOODTOUCH 0x1aad #define USB_DEVICE_ID_GOODTOUCH_000f 0x000f |