[PATCH 4.14 16/52] Input: synaptics - add Intertouch support on X1 Carbon 6th and X280

From: Greg Kroah-Hartman
Date: Mon Jun 04 2018 - 03:22:47 EST


4.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>

commit 5717a09aeaf62d197deba1fc7ccd6bc45f3a9dcc upstream.

Synaptics devices reported it has Intertouch support,
and it fails via PS/2 as following logs:

psmouse serio2: Failed to reset mouse on synaptics-pt/serio0
psmouse serio2: Failed to enable mouse on synaptics-pt/serio0

Set these new devices to use SMBus to fix this issue, then they report
SMBus version 3 is using, patch:
https://patchwork.kernel.org/patch/9989547/ enabled SMBus ver 3 and
makes synaptics devices work fine on SMBus mode.

Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/input/mouse/synaptics.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -174,6 +174,8 @@ static const char * const smbus_pnp_ids[
"LEN004a", /* W541 */
"LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
"LEN0073", /* X1 Carbon G5 (Elantech) */
+ "LEN0092", /* X1 Carbon 6 */
+ "LEN0096", /* X280 */
"LEN200f", /* T450s */
NULL
};