2018-03-08 16:40:30

by Dennis Wassenberg

Subject: [PATCH] Input: i8042: add Lenovo ThinkPad L460 to i8042 reset list

Reset i8042 before probing because of insufficient
BIOS initialisation of the i8042 serial controller.
This makes synaptics touchpad detection possible.
Without resetting the synaptics touchpad is not detected
because there are always NACK messages from AUX port.

Signed-off-by: Dennis Wassenberg <[email protected]>
---
drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 6cbbdc6..7755134 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -627,6 +627,13 @@ static inline void i8042_write_command(int val)
DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
},
},
+ {
+ /* Lenovo ThinkPad L460 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L460"),
+ },
+ },
{ }
};

--
1.9.1

2018-03-08 23:35:29

by Dmitry Torokhov

Subject: Re: [PATCH] Input: i8042: add Lenovo ThinkPad L460 to i8042 reset list

On Thu, Mar 08, 2018 at 05:35:14PM +0100, Dennis Wassenberg wrote:
> Reset i8042 before probing because of insufficient
> BIOS initialisation of the i8042 serial controller.
> This makes synaptics touchpad detection possible.
> Without resetting the synaptics touchpad is not detected
> because there are always NACK messages from AUX port.
>
> Signed-off-by: Dennis Wassenberg <[email protected]>

Applied, thank you.

> ---
> drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
> index 6cbbdc6..7755134 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -627,6 +627,13 @@ static inline void i8042_write_command(int val)
> DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
> },
> },
> + {
> + /* Lenovo ThinkPad L460 */
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L460"),
> + },
> + },
> { }
> };
>
> --
> 1.9.1
>
>

--
Dmitry