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>

2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index b6d93f4ad037..adce58f24f76 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -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
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index 90164fed08d3..4d1f24ee249c 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -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 }
 };