On Aug 03 2016 or thereabouts, Dmitry Torokhov wrote: > On Sun, Jul 31, 2016 at 09:48:32PM +0200, Willy Lambert wrote: > > Hi guys, > > > > I am trying to debug an eGalax touchpad in my embedded system. What's > > strange is that the "evtest" method doesn't react when I'm touching > > (see below). I'm not sure the touchpas is alive, so I can't tell if > > it's HW or SW. > > > > Could anyone with experience on this kind of debug help me with a test > > procedure ? I don't know what to look to identify my problem. > > > > root@(ubiquity)():~# evtest /dev/input/event4 > > Input driver version is 1.0.1 > > Input device ID: bus 0x3 vendor 0xeef product 0x1 version 0x210 > > Input device name: "eGalax Inc. USB TouchController" > > Supported events: > > Event type 0 (Sync) > > Event type 1 (Key) > > Event code 330 (Touch) > > Event type 3 (Absolute) > > Event code 0 (X) > > Value 0 > > Min 0 > > Max 4095 > > Event code 1 (Y) > > Value 0 > > Min 0 > > Max 4095 > > Event code 47 (?) > > Value 0 > > Min 0 > > Max 7 > > Event code 53 (?) > > Value 0 > > Min 0 > > Max 4095 > > Event code 54 (?) > > Value 0 > > Min 0 > > Max 4095 > > Event code 57 (?) > > Value 0 > > Min 0 > > Max 65535 > > Testing ... (interrupt to exit) > > > > > > More details on my setup below : > > > > > > > > The kernel should have recognized the device : > > [ 1.635292] hub 3-0:1.0: port 2, status 0101, change 0001, 12 Mb/s > > [ 1.641396] usbtouchscreen 2-2:1.0: usb_probe_interface > > [ 1.641408] usbtouchscreen 2-2:1.0: usb_probe_interface - got id > > [ 1.641799] usbcore: registered new interface driver usbtouchscreen > > [ 1.645880] usbhid 2-2:1.0: usb_probe_interface > > [ 1.645891] usbhid 2-2:1.0: usb_probe_interface - got id > > [ 1.650539] usbcore: registered new interface driver usbhid > > [ 1.650545] usbhid: USB HID core driver > > [ 1.659604] input: eGalax Inc. USB TouchController Pen as > > /devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/input/input3 > > [ 1.660740] input: eGalax Inc. USB TouchController as > > /devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/input/input4 > > [ 1.661541] usbhid 2-2:1.0: looking for a minor, starting at 96 > > [ 1.662614] hid-multitouch 0003:0EEF:0001.0001: > > input,hiddev0,hidraw0: USB HID v2.10 Pointer [eGalax Inc. USB > > TouchController] on usb-0000:00:1d.0-2/input0 > > > > > > The "usbtouchpad" driver is loaded : > > As shown by the dmesg fragment above the touchscreen is not driven by > usbtouchscreen but rather hid-multitouch driver. Benjamin might have an > idea... The eGalax 0001 is known to be a problem. Some devices are multitouch and are handled properly by hid-multitouch, and some are not and should be driven by something else. The issue is that there is no clear pattern whether we should use one driver or the other. Try adding the VID/PID in hid_ignore_list[] in drivers/hid/hid-core.c, and see if usbtouchscreen works better for you. Cheers, Benjamin > > > > > root@(ubiquity)():~# lsmod > > Module Size Used by > > sja1000_isa 2821 0 > > sja1000 5206 1 sja1000_isa > > can_dev 6395 1 sja1000 > > ard_usb 6911 0 > > hid_multitouch 8637 0 > > usbhid 32470 0 > > usbtouchscreen 11076 0 > > i915 511371 1 > > drm_kms_helper 23402 1 i915 > > drm 185361 2 i915,drm_kms_helper > > cfbcopyarea 2714 1 i915 > > i2c_algo_bit 4336 1 i915 > > video 9818 1 i915 > > cfbimgblt 1947 1 i915 > > cfbfillrect 3142 1 i915 > > > > > > The device is listed (it's still a mystery why the touchpad appears 2 > > times as a pen and as a device) : > > > > > > > > --------------------------------------------------------------------------------------- > > root@(ubiquity)():~# cat /proc/bus/input/devices > > I: Bus=0019 Vendor=0000 Product=0001 Version=0000 > > N: Name="Power Button" > > P: Phys=PNP0C0C/button/input0 > > S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input0 > > U: Uniq= > > H: Handlers=kbd event0 > > B: PROP=0 > > B: EV=3 > > B: KEY=100000 0 0 0 > > > > I: Bus=0019 Vendor=0000 Product=0001 Version=0000 > > N: Name="Power Button" > > P: Phys=LNXPWRBN/button/input0 > > S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1 > > U: Uniq= > > H: Handlers=kbd event1 > > B: PROP=0 > > B: EV=3 > > B: KEY=100000 0 0 0 > > > > I: Bus=0010 Vendor=001f Product=0001 Version=0100 > > N: Name="PC Speaker" > > P: Phys=isa0061/input0 > > S: Sysfs=/devices/platform/pcspkr/input/input2 > > U: Uniq= > > H: Handlers=kbd event2 > > B: PROP=0 > > B: EV=40001 > > B: SND=6 > > > > I: Bus=0003 Vendor=0eef Product=0001 Version=0210 > > N: Name="eGalax Inc. USB TouchController Pen" > > P: Phys=usb-0000:00:1d.0-2/input0 > > S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/input/input3 > > U: Uniq= > > H: Handlers=mouse0 event3 > > B: PROP=0 > > B: EV=1b > > B: KEY=c01 0 0 0 0 0 0 0 0 0 0 > > B: ABS=3 > > B: MSC=10 > > > > I: Bus=0003 Vendor=0eef Product=0001 Version=0210 > > N: Name="eGalax Inc. USB TouchController" > > P: Phys=usb-0000:00:1d.0-2/input0 > > S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/input/input4 > > U: Uniq= > > H: Handlers=mouse1 event4 > > B: PROP=2 > > B: EV=b > > B: KEY=400 0 0 0 0 0 0 0 0 0 0 > > B: ABS=2608000 3 > > Thanks. > > -- > Dmitry -- 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
