Thread (3 messages) flat view 3 messages, 3 authors, 2021-02-08

Re: [PATCH] Input: elantech - add LEN2146 to SMBus blacklist for ThinkPad L13 Gen2

From: Benjamin Tissoires <hidden>
Date: 2021-02-08 08:08:59
Also in: lkml

Hi Nikolai,

On Mon, Feb 8, 2021 at 9:01 AM Nikolai Kostrigin [off-list ref] wrote:
ThinkPad L13 Gen2 has both touchpad and trackpoint.
PNP: LEN2146 PNP0f13
With the default protocol (elantech-smbus) trackpoint is not operating,
while touchpad does. Changing to elantech renders both operational.

Signed-off-by: Nikolai Kostrigin <redacted>
Instead of downgrading the capabilities of the touchpad, couldn't we
fix the trackpoint issues?

I am surprised elantech doesn't work with the trackpoint, because I am
pretty sure I wrote patches in that regard. Which kernel version have
you been testing?

Cheers,
Benjamin
quoted hunk ↗ jump to hunk
---
 drivers/input/mouse/elantech.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 90f8765f9efc..c4c3fa5828d8 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1776,6 +1776,7 @@ static const char * const i2c_blacklist_pnp_ids[] = {
         * These are known to not be working properly as bits are missing
         * in elan_i2c.
         */
+       "LEN2146", /* ThinkPad L13 Gen2 */
        NULL
 };

--
2.29.2
  
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