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Input: elantech - add LEN2146 to SMBus blacklist for ThinkPad L13 Gen2

Message ID 20210208075205.3784059-1-nickel@altlinux.org
State New
Headers show
Series Input: elantech - add LEN2146 to SMBus blacklist for ThinkPad L13 Gen2 | expand

Commit Message

Nikolai Kostrigin Feb. 8, 2021, 7:52 a.m. UTC
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 <nickel@altlinux.org>
---
 drivers/input/mouse/elantech.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Benjamin Tissoires Feb. 8, 2021, 8:06 a.m. UTC | #1
Hi Nikolai,

On Mon, Feb 8, 2021 at 9:01 AM Nikolai Kostrigin <nickel@altlinux.org> 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 <nickel@altlinux.org>

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

> ---
>  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
>
diff mbox series

Patch

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
 };