linux-kernel - [PATCH v2 1/9] Input: synaptics - add Lenovo 80 series ids to SMBus

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Date:   Mon,  9 Apr 2018 11:10:43 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     kt.liao@....com.tw, Oliver Haessler <oliver@...hat.com>,
        Benjamin Berg <bberg@...hat.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        stable@...r.kernel.org
Subject: [PATCH v2 1/9] Input: synaptics - add Lenovo 80 series ids to SMBus

This time, Lenovo decided to go with different pieces in its latest series
of Thinkpads.

For those we have been able to test:
- the T480 is using Synaptics with an IBM trackpoint
   -> it behaves properly with or without intertouch, there is no point
      not using RMI4
- the X1 Carbon 6th gen is using Synaptics with an IBM trackpoint
   -> the touchpad doesn't behave properly under PS/2 so we have to
      switch it to RMI4 if we do not want to have disappointed users
- the X280 is using Synaptics with an ALPS trackpoint
   -> the recent fixes in the trackpoint handling fixed it so upstream
      now works fine with or without RMI4, and there is no point not
      using RMI4
- the T480s is using an Elan touchpad, so that's a different story

Cc: <stable@...r.kernel.org> # v4.14.x, v4.15.x, v4.16.x
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---
no changes in v2

 drivers/input/mouse/synaptics.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 60f2c463d1cc..14a1188561aa 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -173,6 +173,9 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN0046", /* X250 */
 	"LEN004a", /* W541 */
 	"LEN200f", /* T450s */
+	"LEN0071", /* T480 */
+	"LEN0092", /* X1 Carbon 6th gen */
+	"LEN0097", /* X280 -> ALPS trackpoint */
 	NULL
 };
 
-- 
2.14.3