On Monday 11 September 2017 13:26:30 Juanito wrote: > Hi Masaki Ota, > > Thanks! > > On 11.09.2017 04:38, Masaki Ota wrote: > > Hi, Juanito, > > > > In my information, ALPS Touchpad is used on Thinkpad E series and L series. > > I don't know the device that is ALPS Touchpad + other vendor TrackStick. > > But Lenovo might use ALPS Touchpad on such a combination. > > > > Well, that is probably my fault, as it is not the original touchpad that > was delievered with the laptop. I bought the touchpad (that included > the three buttons) separately because I didn't like the clickpad that > came with my laptop. Hi Juanito, if you are still want to play with your touchpad hardware, I have a good news for your. It looks like that at least ALPS rushmore touchpads allow to receive RAW PS/2 packets from trackstick to host kernel, without modifying them by touchpad. Plus I was able to tell ALPS touchpad to start "mixing" those RAW trackstick PS/2 packets with native touchpad packets. On my configuration trackstick in RAW PS/2 mode by default talks with standard bare 3 byte PS/2 protocol and touchpad in 6 byte ALPS protocol. alps.c/psmouse.ko is already able to process and parse such mixed packets. And trackstick can be switched to some extended 4 byte protocol... All this happen when passthrough mode is enabled. From my understanding it seems that in normal mode, touchpad and trackstick communicate with that 4 byte protocol and touchpad converts it into 6 byte ALPS protocol and then send to kernel. On thinkpads trackstick communicate with TPPS/2 protcol and above 4 byte. So in my opinion ALPS touchpad by default cannot understand it. But you should be able to enter passthrough mode and then you would receive that TPPS/2 in alps kernel code. > > And I have found that the V7 protocol device has a special ID for Lenovo. > > ALPS assigns the value that is the model type to 0xC399 address. > > > > Could you check 0xC399 address value such like a below code? > > reg_val = alps_command_mode_read_reg(psmouse, 0xC399); > > > > If the value is 0x1 or 0x2 or 0x6 or 0x10 or 0xF, it has a Stick buttons. > > > > I will check this as soon as I can (I don't have access to the laptop > right now). > > > Best Regards, > > Masaki Ota > > -----Original Message----- > > From: Juanito [mailto:juam+kernel@xxxxxxxxxx] > > Sent: Sunday, September 10, 2017 3:22 AM > > To: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>; Pali Rohár <pali.rohar@xxxxxxxxx> > > Cc: 太田 真喜 Masaki Ota <masaki.ota@xxxxxxxxxxx>; linux-input@xxxxxxxxxxxxxxx; Paul Donohue <linux-kernel@xxxxxxxxxx> > > Subject: Re: ALPS touchpad ot correctly recognized: GlidePoint vs DualPoint > > > > On 09/09/2017 08:12 PM, Dmitry Torokhov wrote: > >> On Sat, Sep 09, 2017 at 10:36:06AM +0200, Pali Rohár wrote: > >>> On Saturday 09 September 2017 10:12:42 Juanito wrote: > >>>> Hello, > >>>> > >>>> On 09/08/2017 08:48 AM, Pali Rohár wrote: > >>>>> On Friday 08 September 2017 07:00:34 Juanito wrote: > >>>>>>> ThinkPad with ALPS? Should not be it Synaptic? Maybe > >>>>>>> miss-detection? > >>>>>> > >>>>>> Sorry, I forgot to mention this. The ThinkPad came with a clickpad > >>>>>> I **really** disliked, so I bought this on the Internet. > >>>>> > >>>>> So, here is a problem. ThinkPads works with Synaptic touchpads, not > >>>>> with ALPS. > >>>> > >>>> There definitely seems to be a problem here :) > >>>> > >>>> Do you mean that the alps code might not be detecting the trackpoint > >>>> because probably the red thingie works with synaptics? > >>>> > >>>> So could this be the situation: > >>>> ALPS driver: Hey touchpad! Do you have a trackstick? > >>>> ALPS touchpad: No, I don't. > >>>> AD: Ok! (and thinks 'I am going to have to ignore all trackstick > >>>> packets that might arrive') > >>>> > >>>> So the driver understands that there can't possibly be any buttons > >>>> because there is no trackstick? > >>> > >>> IIRC ALPS touchpad hardware itself does not work with non-ALPS > >>> trackpoint. > >>> > >>> Masaki, any comments? > >>> > >>>>>> If by trackstick you mean the red thingie, it is **not** working. > >>>>> > >>>>> Ok. And it is working with your patch? > >>>> > >>>> No, it isn't :( > >>> > >>> I expected... You just created franken-hardware. > >>> > >>> Looks like with your hack patch it is possible to make buttons > >>> working, but I suspect that trackstick would. > >>> > >>> Maybe Masaki can provide more information about this fact if we can > >>> do anything. > >>> > >>> Dmitry, what you as maintainer going to do with this problem? > >> > >> It really depends on Ota-san response. If ALPS needs a special version > >> of firmware flashed for proper trackstick identification, then I guess > >> Juanito will have to carry a local patch. I do not think we want to > >> complicate the driver any further for supporting such after-market > >> modification. > >> > > > > If this only happens in this after-market (or franken-hardware... > > hahaha), I'd totally understand if you didn't want to patch it upstream, although it would be nice for me :) > > > >> Does booting with psmouse.proto=imps makes trackstick work? > >> > > > > I am afraid I can't test it now as I don't have access to the laptop. I won't be able to test until two weeks. Will definitely do as soon as I can. > > > >> Thanks. > >> > > > > Thank **you** (Dmitry and everybody esle) for taking the time to look at this. > > > > Juanito > > > > > Thank you very much! > > Best regards, > Juanito > -- Pali Rohár pali.rohar@xxxxxxxxx
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