ts_uinput - open /dev/uinput: No such file or directory

Question

ts_uinput - open /dev/uinput: No such file or directory

OOHehir opened this issue 3 years ago · 4 comments

OOHehir commented 3 years ago

Hello,

I'm running v1.22 (built using Yocto) on a SAMA5D4 Xplained Demo board.

ts_calibrate & ts_test work as expected but when it comes to ts_uinput I get:

open /dev/uinput: No such file or directory

My /dev/input/

drwxr-xr-x 2 root root      80 Jan  1  2012 by-path
crw-rw---- 1 root input 13, 64 Jan  1  2012 event0
crw-rw---- 1 root input 13, 65 Jan  1  2012 event1
lrwxrwxrwx 1 root root       6 Jan  1  2012 touchscreen0 -> event0

I've tried:

TSLIB_TSDEVICE=/dev/input/event0

& then

./ts_uinput -d -v

But the same result.

My ts.conf:

# Uncomment if you wish to use the linux input layer event interface
module_raw input

# Uncomment if you're using a Sharp Zaurus SL-5500/SL-5000d
# module_raw collie

# Uncomment if you're using a Sharp Zaurus SL-C700/C750/C760/C860
# module_raw corgi

# Uncomment if you're using a device with a UCB1200/1300/1400 TS interface
# module_raw ucb1x00

# Uncomment if you're using an HP iPaq h3600 or similar
# module_raw h3600

# Uncomment if you're using a Hitachi Webpad
# module_raw mk712

# Uncomment if you're using an IBM Arctic II
# module_raw arctic2

module pthres pmin=1
# module variance delta=30  <-- commented out after reading previous issue report but no change
module dejitter delta=100
module linear

uname -a returns:

Linux sama5d4-xplained-sd 5.10.50-linux4sam-2021.04 #1 Thu Jul 29 14:58:03 UTC 2021 armv7l armv7l armv7l GNU/Linux

Any pointers in solving this would be appreciated!

Answer 1 · 2021-12-03T17:33:46.000Z

If you want to Feed Touchscreen Events into evdev using uinput you need to enable CONFIG_UINPUT in your Kernel config: https://elixir.bootlin.com/linux/latest/source/drivers/input/misc/Kconfig#L513 If this ist already enabled as a Module you need to load the Module e.g. using modprobe: modprobe uinput OOHehir ***@***.***> schrieb am Fr., 3. Dez. 2021, 18:22:

…

Hello, I'm running v1.22 (built using Yocto) on a SAMA5D4 Xplained Demo board. ts_calibrate & ts_test work as expected but when it comes to ts_uinput I get: open /dev/uinput: No such file or directory My /dev/input/ ` drwxr-xr-x 2 root root 80 Jan 1 2012 by-path crw-rw---- 1 root input 13, 64 Jan 1 2012 event0 crw-rw---- 1 root input 13, 65 Jan 1 2012 event1 lrwxrwxrwx 1 root root 6 Jan 1 2012 touchscreen0 -> event0 ` I've tried: TSLIB_TSDEVICE=/dev/input/event0 & then ./ts_uinput -d -v But the same result. My ts.conf: `# Uncomment if you wish to use the linux input layer event interface module_raw input Uncomment if you're using a Sharp Zaurus SL-5500/SL-5000d module_raw collie Uncomment if you're using a Sharp Zaurus SL-C700/C750/C760/C860 module_raw corgi Uncomment if you're using a device with a UCB1200/1300/1400 TS interface module_raw ucb1x00 Uncomment if you're using an HP iPaq h3600 or similar module_raw h3600 Uncomment if you're using a Hitachi Webpad module_raw mk712 Uncomment if you're using an IBM Arctic II module_raw arctic2 module pthres pmin=1 module variance delta=30 <-- commented out after reading previous issue report but no change module dejitter delta=100 module linear` uname -a returns: Linux sama5d4-xplained-sd 5.10.50-linux4sam-2021.04 #1 <#1> Thu Jul 29 14:58:03 UTC 2021 armv7l armv7l armv7l GNU/Linux — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#192>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABFHRMZYH6UXVUAFXRTIBLUPD4GZANCNFSM5JKGCIYQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

Answer 2 · 2021-12-03T22:05:04.000Z

Many thanks for the prompt reply!

The module was not built in my version of Yocto/ Poky so have to do a rebuild..

I'll report back when I have a result.

For anyone else looking at this the procedure I'm trying to alter the build:

source oe-init-build-env build-microchip
bitbake -c menuconfig virtual/kernel

Modifying 'User level driver support' to built-in (*)

Answer 3 · 2021-12-03T22:44:25.000Z

Pleased Close this Ticket as invalid because it's Not an tslib Bug. If you have questions regarding yocto pleased contact the yocto mailing list OOHehir ***@***.***> schrieb am Fr., 3. Dez. 2021, 23:05:

…

Many thanks for the prompt reply! The module was not built in my version of Yocto/ Poky so have to do a rebuild.. I'll report back when I have a result. For anyone else looking at this I'm trying for the altering the build: source oe-init-build-env build-microchip bitbake -c menuconfig virtual/kernel Modifying 'User level driver support' to built-in (*) — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#192 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABFHRK4PE3XZC3B77UJRI3UPE5JVANCNFSM5JKGCIYQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

Answer 4 · 2021-12-05T09:45:36.000Z

Hello,
Yes, this has solved the issue:

/dev/input/ now has:

drwxr-xr-x  2 root root      80 Jan  1  2012 by-path
crw-rw----  1 root input 13, 64 Jan  1  2012 event0
crw-rw----  1 root input 13, 65 Jan  1  2012 event1
crw-rw----  1 root input 13, 66 Mar  9 12:59 event2
lrwxrwxrwx  1 root root       6 Mar  9 12:59 touchscreen0 -> event2

Thanks for the help!