From: Vojtech Pavlik <vojtech@ucw.cz>
To: Peter Osterlund <petero2@telia.com>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>,
Vojtech Pavlik <vojtech@suse.cz>,
Joseph Fannin <jhf@rivenstone.net>
Subject: Re: [PATCH] Synaptics TouchPad driver for 2.5.70
Date: Wed, 11 Jun 2003 20:26:56 +0200 [thread overview]
Message-ID: <20030611202656.A6871@ucw.cz> (raw)
In-Reply-To: <m27k7sv5si.fsf@telia.com>; from petero2@telia.com on Wed, Jun 11, 2003 at 08:16:13PM +0200
On Wed, Jun 11, 2003 at 08:16:13PM +0200, Peter Osterlund wrote:
> Actually, the runtime configuration may not be needed at all if we do
> the ABS -> REL conversion in user space, because all parameters
> control different aspects of this conversion.
That'd be very nice.
> > > The patch is available here:
> > >
> > > http://w1.894.telia.com/~u89404340/patches/synaptics_driver.patch
> > >
> > > Comments?
> >
> > IMO it should use ABS_ events and the relativization should be done in
> > the XFree86 driver. Other than that, it looks quite OK.
>
> OK, the hardware state consists of 4 "axes" and 4 buttons, as defined
> in the synaptics_hw_state struct:
>
> struct synaptics_hw_state {
> int x;
> int y;
> int z;
> int w;
> int left;
> int right;
> int up;
> int down;
> };
>
> x and y are the finger position, z is the finger pressure and w
> contains information about multifinger taps and finger width (for palm
> detection.) Left, right, up and down contain the state of the
> corresponding physical buttons.
>
> Is this mapping reasonable?
>
> x -> ABS_X
> y -> ABS_Y
> z -> ABS_PRESSURE
> w -> ABS_MISC
> left -> BTN_LEFT
> right -> BTN_RIGHT
> up -> BTN_FORWARD
> down -> BTN_BACK
Yes, this is fine.
> The w value is somewhat special and not really a real axis. According
> to the Synaptics TouchPad Interfacing Guide
> (http://www.synaptics.com/decaf/utilities/ACF126.pdf), W is defined as
> follows:
>
> Value Needed capability Interpretation
> W = 0 capMultiFinger Two fingers on the pad.
> W = 1 capMultiFinger Three or more fingers on the pad.
> W = 2 capPen Pen (instead of finger) on the pad.
> W = 3 Reserved.
> W = 4-7 capPalmDetect Finger of normal width.
> W = 8-14 capPalmDetect Very wide finger or palm.
> W = 15 capPalmDetect Maximum reportable width; extremely
> wide contact.
>
> Is there a better way than using ABS_MISC to pass the W information to
> user space?
I think ABS_MISC is perfectly okay for this.
--
Vojtech Pavlik
SuSE Labs, SuSE CR
next prev parent reply other threads:[~2003-06-11 18:13 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <m2smqhqk4k.fsf@p4.localdomain>
2003-06-11 15:02 ` [PATCH] Synaptics TouchPad driver for 2.5.70 Vojtech Pavlik
2003-06-11 18:16 ` Peter Osterlund
2003-06-11 18:26 ` Vojtech Pavlik [this message]
2003-06-11 18:29 ` AlberT
2003-06-11 18:34 ` Vojtech Pavlik
2003-06-11 21:23 ` Peter Osterlund
2003-06-12 2:48 ` Joseph Fannin
2003-06-12 2:54 ` CaT
2003-06-12 18:58 ` Peter Osterlund
2003-06-12 22:01 ` Peter Berg Larsen
2003-06-12 22:57 ` Vojtech Pavlik
2003-06-12 23:17 ` Peter Berg Larsen
2003-06-12 23:27 ` Vojtech Pavlik
2003-06-12 23:42 ` Peter Berg Larsen
2003-06-13 7:44 ` Vojtech Pavlik
2003-06-13 8:58 ` Peter Berg Larsen
2003-06-13 20:25 ` James Simmons
2003-06-13 20:38 ` Vojtech Pavlik
2003-06-13 20:51 ` James Simmons
2003-06-13 22:08 ` Vojtech Pavlik
2003-06-13 23:57 ` James Simmons
2003-06-14 8:55 ` Vojtech Pavlik
2003-06-16 21:28 ` James Simmons
2003-06-12 19:11 ` Peter Osterlund
2003-06-12 6:31 ` Vojtech Pavlik
2003-06-12 8:36 ` James H. Cloos Jr.
2003-06-15 21:42 ` [PATCH] Synaptics Client/Passthrough (for Inspiron...) Arne Koewing
2003-06-13 21:15 ` [PATCH] Synaptics TouchPad driver for 2.5.70 Peter Osterlund
2003-06-13 21:49 ` James Simmons
2003-06-13 22:08 ` Vojtech Pavlik
2003-06-13 22:55 ` Peter Berg Larsen
2003-06-14 8:42 ` Vojtech Pavlik
2003-06-14 22:19 ` Vojtech Pavlik
2003-06-15 12:18 ` Peter Osterlund
2003-06-15 12:28 ` Vojtech Pavlik
2003-06-15 15:47 ` Peter Osterlund
2003-06-15 17:27 ` Vojtech Pavlik
2003-06-18 23:41 ` Peter Osterlund
2003-06-19 6:03 ` Vojtech Pavlik
2003-06-23 16:30 ` Andreas Jellinghaus
2003-06-23 19:04 ` Peter Osterlund
2003-06-26 20:01 ` Vojtech Pavlik
2003-07-07 23:06 ` Peter Osterlund
2003-07-12 10:51 ` Andreas Jellinghaus
2003-06-10 22:52 Joseph Fannin
2003-06-11 15:30 ` Joseph Fannin
2003-06-11 20:17 ` Andrew Morton
2003-06-11 20:29 ` Vojtech Pavlik
2003-06-11 22:12 ` Peter Osterlund
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