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... > > 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
