Re: [PATCH] Input: trackpoint: add new trackpoint firmware ID

From: Aaron Ma
Date: Sun Feb 12 2017 - 19:21:22 EST




On 02/13/2017 06:38 AM, Dmitry Torokhov wrote:
> On Fri, Feb 10, 2017 at 11:02:21AM +0800, Aaron Ma wrote:
>> Synaptics add new TP firmware ID: 0x2 and 0x3, for now both lower 2 bits
>> are indicated as TP. Change the constant to bitwise values.
>
> Hmm, I thought IBM/Lenovo owned trackpoint support... Andrew, is it
> yours now?
>
> Aaron, what devices have these new trackpoints>?

Lenovo ThinkPad X1 Carbon 5th have this new trackpoint, maybe it is not
on sale yet but soon.

BR,
Aaron

>
> Thanks.
>
>>
>> Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
>> Cc: stable@xxxxxxxxxxxxxxx
>> ---
>> drivers/input/mouse/trackpoint.c | 3 ++-
>> drivers/input/mouse/trackpoint.h | 3 ++-
>> 2 files changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c
>> index 7331084..9ff0f38 100644
>> --- a/drivers/input/mouse/trackpoint.c
>> +++ b/drivers/input/mouse/trackpoint.c
>> @@ -265,7 +265,8 @@ static int trackpoint_start_protocol(struct psmouse *psmouse, unsigned char *fir
>> if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
>> return -1;
>>
>> - if (param[0] != TP_MAGIC_IDENT)
>> + /* add new TP ID. */
>> + if (!(param[0] & TP_MAGIC_IDENT))
>> return -1;
>>
>> if (firmware_id)
>> diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h
>> index 5617ed3..8805575 100644
>> --- a/drivers/input/mouse/trackpoint.h
>> +++ b/drivers/input/mouse/trackpoint.h
>> @@ -21,8 +21,9 @@
>> #define TP_COMMAND 0xE2 /* Commands start with this */
>>
>> #define TP_READ_ID 0xE1 /* Sent for device identification */
>> -#define TP_MAGIC_IDENT 0x01 /* Sent after a TP_READ_ID followed */
>> +#define TP_MAGIC_IDENT 0x03 /* Sent after a TP_READ_ID followed */
>> /* by the firmware ID */
>> + /* Firmware ID includes 0x1, 0x2, 0x3 */
>>
>>
>> /*
>> --
>> 2.9.3
>>
>