Input: trackpoint - add new trackpoint firmware ID

commit ec667683c532c93fb41e100e5d61a518971060e2 upstream.

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.

This makes trackpoint to be recognized on Lenovo Carbon X1 Gen5 instead
of it being identified as "PS/2 Generic Mouse".

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c
index 54b2fa8..7836450 100644 (file)
--- a/drivers/input/mouse/trackpoint.c
+++ b/drivers/input/mouse/trackpoint.c
@@ -186,7 +186,8 @@ 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 e558a70..bdee131 100644 (file)
--- 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 */
 
 
 /*