diff options
| -rw-r--r-- | drivers/input/mouse/alps.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index dbe57da8c1a1..4a3bc168a4a7 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -2544,13 +2544,31 @@ static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], } static int alps_update_dual_info_ss4_v2(unsigned char otp[][4], - struct alps_data *priv) + struct alps_data *priv, + struct psmouse *psmouse) { bool is_dual = false; + int reg_val = 0; + struct ps2dev *ps2dev = &psmouse->ps2dev; - if (IS_SS4PLUS_DEV(priv->dev_id)) + if (IS_SS4PLUS_DEV(priv->dev_id)) { is_dual = (otp[0][0] >> 4) & 0x01; + if (!is_dual) { + /* For support TrackStick of Thinkpad L/E series */ + if (alps_exit_command_mode(psmouse) == 0 && + alps_enter_command_mode(psmouse) == 0) { + reg_val = alps_command_mode_read_reg(psmouse, + 0xD7); + } + alps_exit_command_mode(psmouse); + ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); + + if (reg_val == 0x0C || reg_val == 0x1D) + is_dual = true; + } + } + if (is_dual) priv->flags |= ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE; @@ -2573,7 +2591,7 @@ static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, alps_update_btn_info_ss4_v2(otp, priv); - alps_update_dual_info_ss4_v2(otp, priv); + alps_update_dual_info_ss4_v2(otp, priv, psmouse); return 0; } |