On Monday 04 December 2017 04:48:43 Masaki Ota wrote: > Hi, Pali, > > I don't get your point. > Please modify the code if you have an idea.
See below > Best Regards, > Masaki Ota > -----Original Message----- > From: Pali Rohár [mailto:pali.ro...@gmail.com] > Sent: Saturday, December 02, 2017 6:08 AM > To: Masaki Ota <012ne...@gmail.com> > Cc: dmitry.torok...@gmail.com; benjamin.tissoi...@redhat.com; > aaron...@canonical.com; j...@ristioja.ee; 太田 真喜 Masaki Ota > <masaki....@jp.alps.com>; linux-in...@vger.kernel.org; > linux-kernel@vger.kernel.org > Subject: Re: [PATCH] Support TrackStick of Thinkpad L570 > > On Wednesday 29 November 2017 17:33:58 Masaki Ota wrote: > > From: Masaki Ota <masaki....@jp.alps.com> > > - The issue is that Thinkpad L570 TrackStick does not work. Because the > > main interface of Thinkpad L570 device is SMBus, so ALPS overlooked PS2 > > interface Firmware setting of TrackStick. The detail is that TrackStick otp > > bit is disabled. > > - Add the code that checks 0xD7 address value. This value is device number > > information, so we can identify the device by checking this value. > > - If we check 0xD7 value, we need to enable Command mode and after check > > the value we need to disable Command mode, then we have to enable the > > device(0xF4 command). > > - Thinkpad L570 device number is 0x0C or 0x1D. If it is TRUE, enable > > ALPS_DUALPOINT flag. > > > > Signed-off-by: Masaki Ota <masaki....@jp.alps.com> > > --- > > drivers/input/mouse/alps.c | 24 +++++++++++++++++++++--- > > 1 file changed, 21 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c > > index 850b00e3ad8e..6f092bdd9fc5 100644 > > --- a/drivers/input/mouse/alps.c > > +++ b/drivers/input/mouse/alps.c > > @@ -2541,13 +2541,31 @@ 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) > > { You can access psmouse from the priv structure as: struct psmouse *psmouse = priv->psmouse; Therefore you do not have to extend function parameters with psmouse pointer as that is already present int alps_data. struct alps_data is defined as: struct alps_data { 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; > > @@ -2570,7 +2588,7 @@ 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); > > Now looking at this change... Is there reason why you are passing psmouse > parameter there? Because struct alps_data contains psmouse member. > > > > > return 0; > > } > > -- > Pali Rohár > pali.ro...@gmail.com -- Pali Rohár pali.ro...@gmail.com
