hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

HID: i2c-hid: Disable runtime PM on Synaptics touchpad 

We have a new Dell laptop which has the synaptics I2C touchpad
(06cb:7e7e) on it. After booting up the Linux, the touchpad doesn't
work, there is no interrupt when touching the touchpad, after
disable the runtime PM, everything works well.

I also tried the quirk of I2C_HID_QUIRK_DELAY_AFTER_SLEEP, it is
better after applied this quirk, there are interrupts but data it
reports is invalid.

Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Hui Wang 2019-03-29 14:13:23 +08:00 committed by Jiri Kosina
parent 2bafa1e962
commit 74e7c6c877
2 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/hid/hid-ids.h
View File

@ -1083,6 +1083,7 @@
#define USB_DEVICE_ID_SYNAPTICS_HD 0x0ac3
#define USB_DEVICE_ID_SYNAPTICS_QUAD_HD 0x1ac3
#define USB_DEVICE_ID_SYNAPTICS_TP_V103 0x5710
#define I2C_DEVICE_ID_SYNAPTICS_7E7E 0x7e7e
#define USB_VENDOR_ID_TEXAS_INSTRUMENTS 0x2047
#define USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA 0x0855

2
drivers/hid/i2c-hid/i2c-hid-core.c
View File

@ -184,6 +184,8 @@ static const struct i2c_hid_quirks {
I2C_HID_QUIRK_NO_RUNTIME_PM },
{ USB_VENDOR_ID_ELAN, HID_ANY_ID,
I2C_HID_QUIRK_BOGUS_IRQ },
{ USB_VENDOR_ID_SYNAPTICS, I2C_DEVICE_ID_SYNAPTICS_7E7E,
I2C_HID_QUIRK_NO_RUNTIME_PM },
{ 0, 0 }
};