Hi, my small arm netbook contains a elantech touchpad. It is connected via a keyboard controller which communicates over a i2c bus with the host cpu. The keyboard controller/host cpu communication is handled by a special driver (see drivers/staging/nvec_ps2.c). Up to commmit 28f49616 (Input: elantech - add v3 hardware support) the touchpad was recognized as a Logitech mouse and it worked fine this way. Since commit 28f49616, the touchpad is detected as an elantech device (I checked the hw and it is really one). The detected HW version is 2 and the firmware version 0x150500). Unfortunately, the device still streams 3 byte packets which are of course not handled by the elantech driver. >From what I understood so far, the touchpad needs to be switched to something called "absolute mode". This is done by programming some tp registers. I checked these registers and found that register 21 is still 0, while it should be 0x60 (reg 10 and 11 are ok). So here is a register dump: 0x07 => 0x00 0x10 => 0x54 0x11 => 0x88 0x20 => 0x00 0x21 => 0x00 // should be 60 ? 0x22 => 0x00 0x23 => 0x00 0x24 => 0x00 0x25 => 0x00 0x26 => 0x00 Tried "echo -n 0x60 > reg_21" didn't helped (just manipulates other registers?). So here is the xorg output: [ 16.598] (II) LoadModule: "synaptics" [ 16.600] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so [ 16.600] (II) Module synaptics: vendor="X.Org Foundation" [ 16.600] compiled for 1.10.4, module version = 1.4.1 [ 16.601] Module class: X.Org XInput Driver [ 16.601] ABI class: X.Org XInput driver, version 12.3 [ 16.601] (II) Using input driver 'synaptics' for 'ETPS/2 Elantech Touchpad' [ 16.601] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so [ 16.601] (**) ETPS/2 Elantech Touchpad: always reports core events [ 16.601] (**) Option "Device" "/dev/input/event6" [ 16.800] (--) ETPS/2 Elantech Touchpad: x-axis range 0 - 1344 [ 16.800] (--) ETPS/2 Elantech Touchpad: y-axis range 0 - 448 [ 16.800] (--) ETPS/2 Elantech Touchpad: pressure range 0 - 255 [ 16.800] (--) ETPS/2 Elantech Touchpad: finger width range 0 - 15 [ 16.800] (--) ETPS/2 Elantech Touchpad: buttons: left right double triple [ 16.949] (--) ETPS/2 Elantech Touchpad: touchpad found [ 16.949] (**) ETPS/2 Elantech Touchpad: always reports core events [ 17.049] (**) Option "config_info" "udev:/sys/devices/serio0/input/input6/event6" [ 17.049] (II) XINPUT: Adding extended input device "ETPS/2 Elantech Touchpad" (type: TOUCHPAD) [ 17.050] (**) ETPS/2 Elantech Touchpad: (accel) MinSpeed is now constant deceleration 2.5 [ 17.050] (**) ETPS/2 Elantech Touchpad: MaxSpeed is now 1.75 [ 17.050] (**) ETPS/2 Elantech Touchpad: AccelFactor is now 0.141 [ 17.050] (**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1 [ 17.050] (**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 1 [ 17.051] (**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000 [ 17.051] (**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4 [ 17.292] (--) ETPS/2 Elantech Touchpad: touchpad found [ 17.293] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse0) ... and here is traffic dump (sorry a bit long): [ 5.887554] psmouse serio0: Sending ps2 cmd f2 [ 5.928870] nvec_ps2: got response fa 00 [ 5.928883] psmouse serio0: Sending ps2 cmd f6 [ 5.938252] nvec_ps2: got response fa [ 5.938267] psmouse serio0: Sending ps2 cmd f3 [ 5.948270] nvec_ps2: got response fa [ 5.948283] psmouse serio0: Sending ps2 cmd 0a [ 5.957831] nvec_ps2: got response fa [ 5.957844] psmouse serio0: Sending ps2 cmd e8 [ 5.970079] nvec_ps2: got response fa [ 5.970175] psmouse serio0: Sending ps2 cmd 00 [ 5.979733] nvec_ps2: got response fa [ 5.990101] psmouse serio0: Sending ps2 cmd f3 [ 5.999384] nvec_ps2: got response fa [ 5.999396] psmouse serio0: Sending ps2 cmd 14 [ 6.008871] nvec_ps2: got response fa [ 6.008883] psmouse serio0: Sending ps2 cmd f3 [ 6.018769] nvec_ps2: got response fa [ 6.018781] psmouse serio0: Sending ps2 cmd 3c [ 6.028603] nvec_ps2: got response fa [ 6.030088] psmouse serio0: Sending ps2 cmd f3 [ 6.038575] nvec_ps2: got response fa [ 6.038586] psmouse serio0: Sending ps2 cmd 28 [ 6.048213] nvec_ps2: got response fa [ 6.048226] psmouse serio0: Sending ps2 cmd f3 [ 6.057895] nvec_ps2: got response fa [ 6.057906] psmouse serio0: Sending ps2 cmd 14 [ 6.067674] nvec_ps2: got response fa [ 6.067687] psmouse serio0: Sending ps2 cmd f3 [ 6.077354] nvec_ps2: got response fa [ 6.077366] psmouse serio0: Sending ps2 cmd 14 [ 6.086930] nvec_ps2: got response fa [ 6.086942] psmouse serio0: Sending ps2 cmd f3 [ 6.097024] nvec_ps2: got response fa [ 6.100154] psmouse serio0: Sending ps2 cmd 3c [ 6.113333] nvec_ps2: got response fa [ 6.113349] psmouse serio0: Sending ps2 cmd f3 [ 6.119508] nvec_ps2: got response fa [ 6.119520] psmouse serio0: Sending ps2 cmd 28 [ 6.131131] nvec_ps2: got response fa [ 6.131143] psmouse serio0: Sending ps2 cmd f3 [ 6.138858] nvec_ps2: got response fa [ 6.138870] psmouse serio0: Sending ps2 cmd 14 [ 6.148702] nvec_ps2: got response fa [ 6.148714] psmouse serio0: Sending ps2 cmd f3 [ 6.158898] nvec_ps2: got response fa [ 6.158910] psmouse serio0: Sending ps2 cmd 14 [ 6.168193] nvec_ps2: got response fa [ 6.168205] psmouse serio0: Sending ps2 cmd f2 [ 6.183092] nvec_ps2: got response fa 00 [ 6.183104] psmouse serio0: Sending ps2 cmd e8 [ 6.192177] nvec_ps2: got response fa [ 6.200109] psmouse serio0: Sending ps2 cmd 00 [ 6.207287] nvec_ps2: got response fa [ 6.207300] psmouse serio0: Sending ps2 cmd e8 [ 6.217568] nvec_ps2: got response fa [ 6.217580] psmouse serio0: Sending ps2 cmd 00 [ 6.226747] nvec_ps2: got response fa [ 6.226760] psmouse serio0: Sending ps2 cmd e8 [ 6.236774] nvec_ps2: got response fa [ 6.237062] psmouse serio0: Sending ps2 cmd 00 [ 6.246454] nvec_ps2: got response fa [ 6.246466] psmouse serio0: Sending ps2 cmd e8 [ 6.256148] nvec_ps2: got response fa [ 6.256161] psmouse serio0: Sending ps2 cmd 00 [ 6.265893] nvec_ps2: got response fa [ 6.265907] psmouse serio0: Sending ps2 cmd e9 [ 6.281059] nvec_ps2: got response fa 00 00 14 [ 6.281071] psmouse serio0: Sending ps2 cmd f6 [ 6.290198] nvec_ps2: got response fa [ 6.291736] psmouse serio0: Sending ps2 cmd e8 [ 6.304879] nvec_ps2: got response fa [ 6.305723] psmouse serio0: Sending ps2 cmd 00 [ 6.314646] nvec_ps2: got response fa [ 6.314969] psmouse serio0: Sending ps2 cmd e6 [ 6.324389] nvec_ps2: got response fa [ 6.324444] psmouse serio0: Sending ps2 cmd e6 [ 6.334351] nvec_ps2: got response fa [ 6.334363] psmouse serio0: Sending ps2 cmd e6 [ 6.343863] nvec_ps2: got response fa [ 6.343875] psmouse serio0: Sending ps2 cmd e9 [ 6.358959] nvec_ps2: got response fa 3c 03 00 [ 6.358972] psmouse serio0: Sending ps2 cmd f6 [ 6.367935] nvec_ps2: got response fa [ 6.367948] psmouse serio0: Sending ps2 cmd f5 [ 6.377930] nvec_ps2: got response fa [ 6.377943] psmouse serio0: Sending ps2 cmd e6 [ 6.387570] nvec_ps2: got response fa [ 6.387582] psmouse serio0: Sending ps2 cmd e6 [ 6.397423] nvec_ps2: got response fa [ 6.397435] psmouse serio0: Sending ps2 cmd e6 [ 6.407058] nvec_ps2: got response fa [ 6.407070] psmouse serio0: Sending ps2 cmd e9 [ 6.420677] nvec_ps2: got response fa 3c 03 00 [ 6.420812] psmouse serio0: Sending ps2 cmd e6 [ 6.428976] nvec_ps2: got response fa [ 6.428989] psmouse serio0: Sending ps2 cmd e8 [ 6.438950] nvec_ps2: got response fa [ 6.438962] psmouse serio0: Sending ps2 cmd 00 [ 6.448514] nvec_ps2: got response fa [ 6.456744] psmouse serio0: Sending ps2 cmd e8 [ 6.465721] nvec_ps2: got response fa [ 6.465734] psmouse serio0: Sending ps2 cmd 00 [ 6.475475] nvec_ps2: got response fa [ 6.475486] psmouse serio0: Sending ps2 cmd e8 [ 6.485327] nvec_ps2: got response fa [ 6.485338] psmouse serio0: Sending ps2 cmd 00 [ 6.495187] nvec_ps2: got response fa [ 6.495199] psmouse serio0: Sending ps2 cmd e8 [ 6.504898] nvec_ps2: got response fa [ 6.504911] psmouse serio0: Sending ps2 cmd 01 [ 6.515155] nvec_ps2: got response fa [ 6.515166] psmouse serio0: Sending ps2 cmd e9 [ 6.530131] nvec_ps2: got response fa 15 05 00 [ 6.530142] elantech: Elantech version query result 0x15, 0x05, 0x00. [ 6.530162] psmouse serio0: Sending ps2 cmd e6 [ 6.539482] nvec_ps2: got response fa [ 6.539494] psmouse serio0: Sending ps2 cmd e8 [ 6.549442] nvec_ps2: got response fa [ 6.549454] psmouse serio0: Sending ps2 cmd 00 [ 6.559917] nvec_ps2: got response fa [ 6.559929] psmouse serio0: Sending ps2 cmd e8 [ 6.569310] nvec_ps2: got response fa [ 6.569321] psmouse serio0: Sending ps2 cmd 00 [ 6.578560] nvec_ps2: got response fa [ 6.578575] psmouse serio0: Sending ps2 cmd e8 [ 6.588320] nvec_ps2: got response fa [ 6.588482] psmouse serio0: Sending ps2 cmd 00 [ 6.598152] nvec_ps2: got response fa [ 6.599215] psmouse serio0: Sending ps2 cmd e8 [ 6.612103] nvec_ps2: got response fa [ 6.612125] psmouse serio0: Sending ps2 cmd 01 [ 6.622191] nvec_ps2: got response fa [ 6.622203] psmouse serio0: Sending ps2 cmd e9 [ 6.634470] nvec_ps2: got response fa 15 05 00 [ 6.634482] elantech: assuming hardware version 2 (with firmware version 0x150500) [ 6.634496] psmouse serio0: Sending ps2 cmd e6 [ 6.644172] nvec_ps2: got response fa [ 6.644184] psmouse serio0: Sending ps2 cmd e8 [ 6.653619] nvec_ps2: got response fa [ 6.653631] psmouse serio0: Sending ps2 cmd 00 [ 6.663864] nvec_ps2: got response fa [ 6.663876] psmouse serio0: Sending ps2 cmd e8 [ 6.674343] nvec_ps2: got response fa [ 6.675328] psmouse serio0: Sending ps2 cmd 00 [ 6.684437] nvec_ps2: got response fa [ 6.684450] psmouse serio0: Sending ps2 cmd e8 [ 6.692962] nvec_ps2: got response fa [ 6.692974] psmouse serio0: Sending ps2 cmd 00 [ 6.702492] nvec_ps2: got response fa [ 6.702504] psmouse serio0: Sending ps2 cmd e8 [ 6.712488] nvec_ps2: got response fa [ 6.713122] psmouse serio0: Sending ps2 cmd 02 [ 6.722199] nvec_ps2: got response fa [ 6.722211] psmouse serio0: Sending ps2 cmd e9 [ 6.739803] nvec_ps2: got response fa 69 17 09 [ 6.739814] elantech: Synaptics capabilities query result 0x69, 0x17, 0x09. [ 6.739828] psmouse serio0: Sending ps2 cmd f8 [ 6.749168] nvec_ps2: got response fa [ 6.749180] psmouse serio0: Sending ps2 cmd 11 [ 6.758987] nvec_ps2: got response fa [ 6.759000] psmouse serio0: Sending ps2 cmd f8 [ 6.769015] nvec_ps2: got response fa [ 6.769028] psmouse serio0: Sending ps2 cmd 10 [ 6.778532] nvec_ps2: got response fa [ 6.779000] psmouse serio0: Sending ps2 cmd f8 [ 6.790669] nvec_ps2: got response fa [ 6.790682] psmouse serio0: Sending ps2 cmd 54 [ 6.800648] nvec_ps2: got response fa [ 6.804250] psmouse serio0: Sending ps2 cmd e6 [ 6.813012] nvec_ps2: got response fa [ 6.813025] psmouse serio0: Sending ps2 cmd f8 [ 6.822806] nvec_ps2: got response fa [ 6.822824] psmouse serio0: Sending ps2 cmd 11 [ 6.840090] nvec_ps2: got response fa [ 6.841091] psmouse serio0: Sending ps2 cmd f8 [ 6.849371] nvec_ps2: got response fa [ 6.850834] psmouse serio0: Sending ps2 cmd 11 [ 6.862394] nvec_ps2: got response fa [ 6.862408] psmouse serio0: Sending ps2 cmd f8 [ 6.871858] nvec_ps2: got response fa [ 6.871870] psmouse serio0: Sending ps2 cmd 88 [ 6.881467] nvec_ps2: got response fa [ 6.881478] psmouse serio0: Sending ps2 cmd e6 [ 6.891346] nvec_ps2: got response fa [ 6.891359] psmouse serio0: Sending ps2 cmd f8 [ 6.901264] nvec_ps2: got response fa [ 6.901278] psmouse serio0: Sending ps2 cmd 11 [ 6.910984] nvec_ps2: got response fa [ 6.911082] psmouse serio0: Sending ps2 cmd f8 [ 6.921680] nvec_ps2: got response fa [ 6.921692] psmouse serio0: Sending ps2 cmd 21 [ 6.930327] nvec_ps2: got response fa [ 6.930340] psmouse serio0: Sending ps2 cmd f8 [ 6.940142] nvec_ps2: got response fa [ 6.940184] psmouse serio0: Sending ps2 cmd 60 [ 6.949914] nvec_ps2: got response fa [ 6.949926] psmouse serio0: Sending ps2 cmd e6 [ 6.959720] nvec_ps2: got response fc [ 7.140108] elantech: retrying ps2 command 0xe6 (2). [ 7.650070] psmouse serio0: Sending ps2 cmd e6 [ 7.660088] nvec_ps2: got response fa [ 7.660100] psmouse serio0: Sending ps2 cmd f8 [ 7.669533] nvec_ps2: got response fe [ 7.669542] elantech: retrying ps2 command 0xf8 (2). [ 8.170058] psmouse serio0: Sending ps2 cmd f8 [ 8.180588] nvec_ps2: got response fc [ 8.370050] elantech: retrying ps2 command 0xf8 (1). [ 8.880062] psmouse serio0: Sending ps2 cmd f8 [ 8.888444] nvec_ps2: got response fa [ 8.888454] psmouse serio0: Sending ps2 cmd 10 [ 8.898301] nvec_ps2: got response fa [ 8.898312] psmouse serio0: Sending ps2 cmd f8 [ 8.908129] nvec_ps2: got response fa [ 8.908143] psmouse serio0: Sending ps2 cmd 10 [ 8.918150] nvec_ps2: got response fa [ 8.918230] psmouse serio0: Sending ps2 cmd e9 [ 8.930670] nvec_ps2: got response fa 54 02 64 [ 8.930685] psmouse serio0: Sending ps2 cmd e6 [ 8.939816] nvec_ps2: got response fa [ 8.939824] psmouse serio0: Sending ps2 cmd e8 [ 8.949201] nvec_ps2: got response fa [ 8.949209] psmouse serio0: Sending ps2 cmd 00 [ 8.959326] nvec_ps2: got response fa [ 8.959334] psmouse serio0: Sending ps2 cmd e8 [ 8.969008] nvec_ps2: got response fa [ 8.969016] psmouse serio0: Sending ps2 cmd 00 [ 8.978357] nvec_ps2: got response fa [ 8.978365] psmouse serio0: Sending ps2 cmd e8 [ 8.988536] nvec_ps2: got response fa [ 8.988544] psmouse serio0: Sending ps2 cmd 00 [ 8.998182] nvec_ps2: got response fa [ 8.998190] psmouse serio0: Sending ps2 cmd e8 [ 9.008213] nvec_ps2: got response fa [ 9.008221] psmouse serio0: Sending ps2 cmd 00 [ 9.017767] nvec_ps2: got response fa [ 9.017775] psmouse serio0: Sending ps2 cmd e9 [ 9.035410] nvec_ps2: got response fa 14 6e 7a [ 9.035470] psmouse serio0: Sending ps2 cmd f3 [ 9.044827] nvec_ps2: got response fa [ 9.044835] psmouse serio0: Sending ps2 cmd 64 [ 9.054645] nvec_ps2: got response fa [ 9.054655] psmouse serio0: Sending ps2 cmd e8 [ 9.064290] nvec_ps2: got response fa [ 9.064298] psmouse serio0: Sending ps2 cmd 03 [ 9.074112] nvec_ps2: got response fa [ 9.074123] psmouse serio0: Sending ps2 cmd e6 [ 9.083828] nvec_ps2: got response fa [ 9.084064] input: ETPS/2 Elantech Touchpad as /devices/serio0/input/input6 [ 9.084510] psmouse serio0: Sending ps2 cmd f4 [ 9.093769] nvec_ps2: got response fa [ 12.239652] psmouse serio0: Sending ps2 cmd f5 [ 12.248772] nvec_ps2: got response fa [ 12.248797] psmouse serio0: Sending ps2 cmd f4 [ 12.258601] nvec_ps2: got response fa .. now some finger move from right to left: [ 2226.798147] nvec_ps2: got event 18 ff 00 [ 2226.810750] elantech: PS/2 packet [ 0x18 , 0xff , 0x00 , 0x18 , 0xff , 0x01 ] [ 2226.810812] nvec_ps2: got event 18 ff 01 [ 2226.824962] nvec_ps2: got event 18 fe 00 [ 2226.836464] elantech: PS/2 packet [ 0x18 , 0xfe , 0x00 , 0x18 , 0xfb , 0x01 ] [ 2226.836500] nvec_ps2: got event 18 fb 01 [ 2226.849539] nvec_ps2: got event 18 f8 01 [ 2226.863195] elantech: PS/2 packet [ 0x18 , 0xf8 , 0x01 , 0x18 , 0xf4 , 0x02 ] [ 2226.863230] nvec_ps2: got event 18 f4 02 [ 2226.874269] nvec_ps2: got event 18 ef 01 [ 2226.886808] elantech: PS/2 packet [ 0x18 , 0xef , 0x01 , 0x18 , 0xef , 0x02 ] [ 2226.886919] nvec_ps2: got event 18 ef 02 [ 2226.899225] nvec_ps2: got event 18 ef 02 [ 2226.913083] elantech: PS/2 packet [ 0x18 , 0xef , 0x02 , 0x18 , 0xf0 , 0x02 ] [ 2226.913194] nvec_ps2: got event 18 f0 02 [ 2226.924667] nvec_ps2: got event 18 ee 02 [ 2226.937733] elantech: PS/2 packet [ 0x18 , 0xee , 0x02 , 0x18 , 0xf1 , 0x00 ] [ 2226.937843] nvec_ps2: got event 18 f1 00 [ 2226.951434] nvec_ps2: got event 18 ee 01 [ 2226.962277] elantech: PS/2 packet [ 0x18 , 0xee , 0x01 , 0x18 , 0xf1 , 0x00 ] [ 2226.962388] nvec_ps2: got event 18 f1 00 [ 2226.974781] nvec_ps2: got event 18 f0 00 [ 2226.987177] elantech: PS/2 packet [ 0x18 , 0xf0 , 0x00 , 0x18 , 0xf7 , 0x01 ] [ 2226.987286] nvec_ps2: got event 18 f7 01 [ 2227.000963] nvec_ps2: got event 18 fb 00 [ 2227.012722] elantech: PS/2 packet [ 0x18 , 0xfb , 0x00 , 0x18 , 0xfe , 0x00 ] [ 2227.012832] nvec_ps2: got event 18 fe 00 [ 2227.025664] nvec_ps2: got event 18 ff 00 [ 2227.039411] elantech: PS/2 packet [ 0x18 , 0xff , 0x00 , 0x18 , 0xff , 0x00 ] [ 2227.039520] nvec_ps2: got event 18 ff 00 So AFAIK, this looks like mouse streaming proto. I disabled packet validity checking to get this dump. And finally, this is a special kernel version (chromeos kernel v2.6.38 with elantech patches backported). I can test mainline also if required. Anything more I can do to get it going? Thanks Marc -- 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
