Great, thank you. Enabling that RAW/extended/SP4 mode is done by sequence E6, E6, E6, F3, C8, F3, 14 (written in page 35) and it matches what function alps_trackstick_enter_extended_mode_v3_v6() in my patch is doing. So is correct. On page 36 I see that there is described Method 1 for reporting stick data which prevents cursor jumps. Seems that kernel uses Method 2. Method 1 depends on some prioritization. Do you have some information how to activate Method 1? Sometimes I observe that problem with "cursor jumps" and from Method 1 could prevent it. So I would like to try experimenting... On Wednesday 14 March 2018 23:56:46 Masaki Ota wrote: > Hi, Pali, > > I have added Appendix. > According to this spec documents, SP raw mode is SP 4 byte mode. > I think Extended mode meaning is almost all the same as Raw mode. > The description of how to set is written in Page 35. > > Best Regards, > Masaki Ota > -----Original Message----- > From: Pali Rohár [mailto:pali.rohar@xxxxxxxxx] > Sent: Thursday, March 15, 2018 7:58 AM > To: 太田 真喜 Masaki Ota <masaki.ota@xxxxxxxxxxx> > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>; linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH] Input: alps - Demystify trackstick initialization for v3 and v6 protocols > > Hi! Thank you for information. > > Your PS/2 Aux Port Control description seems to really matches. Just there is reverse order of bits. Bit 0 in description is highest, therefore matches BIT(7) macro. > > Bit 6 in description (BIT(1) in code) describes SP Extended Mode which alps.c enabled. And in that description is written: > > "If 1 SP is extended packet format (driver must set SP raw mode and GP absolute mode)." > > Do you have any idea what "SP raw mode" is? How to set it? For me it looks like it could be that extended mode of trackstick itself. > > "GP absolute mode" I guess is GlidePoint absolute mode, therefore enable > 6 byte absolute mode for touchpad. > > And for Bit 7 (BIT(0)) is written: > > This bit is used with the PS/2 Aux port to use the Pass-Thru mode ( see appendix A ). Do you have some information about this appendix A? > > On Wednesday 14 March 2018 10:21:43 Masaki Ota wrote: > > Hi, Pali, > > > > I just picked up the spec which relates with trackstic. > > > > Best Regards, > > Masaki Ota > > -----Original Message----- > > From: Pali Rohár [mailto:pali.rohar@xxxxxxxxx] > > Sent: Tuesday, March 13, 2018 8:14 AM > > To: 太田 真喜 Masaki Ota <masaki.ota@xxxxxxxxxxx>; Dmitry Torokhov > > <dmitry.torokhov@xxxxxxxxx> > > Cc: linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > Subject: Re: [PATCH] Input: alps - Demystify trackstick initialization > > for v3 and v6 protocols > > > > Masaki, if you have access to the internal ALPS v3 / Rushmore > > documentation, I would like to have a review of this patch or > > confirmation of those information :-) > > -- > Pali Rohár > pali.rohar@xxxxxxxxx -- Pali Rohár pali.rohar@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
