Re: [PATCH v2 0/4] Add support for the Cypress cyttsp5

Alistair Francis
2021-11-25T09:46:32Z

On Sat, Nov 6, 2021 at 12:52 AM Andreas Kemnade <andreas@kemnade.info> wrote:
>
> Hallo Alistair,
>
> my Xorg (debian buster installation) does not like that:
> [ 3112.462] (**) cyttsp5: Applying InputClass "evdev touchscreen catchall"
> [ 3112.462] (**) cyttsp5: Applying InputClass "libinput touchscreen catchall"
> [ 3112.462] (II) Using input driver 'libinput' for 'cyttsp5'
> [ 3112.463] (**) cyttsp5: always reports core events
> [ 3112.463] (**) Option "Device" "/dev/input/event1"
> [ 3112.463] (**) Option "_source" "server/udev"
> [ 3112.496] (II) event1 - cyttsp5: is tagged by udev as: Touchscreen
> [ 3112.498] (EE) event1 - cyttsp5: kernel bug: device has min == max on ABS_X
> [ 3112.498] (II) event1 - cyttsp5: was rejected
> [ 3112.498] (II) event1 - not using input device '/dev/input/event1'.
> [ 3112.499] (EE) libinput: cyttsp5: Failed to create a device for /dev/input/event1
>
> # evtest /dev/input/event1
> Input driver version is 1.0.1
> Input device ID: bus 0x0 vendor 0x0 product 0x0 version 0x0
> Input device name: "cyttsp5"
> Supported events:
> Event type 0 (EV_SYN)
> Event type 1 (EV_KEY)
> Event code 330 (BTN_TOUCH)
> Event type 2 (EV_REL)
> Event type 3 (EV_ABS)
> Event code 0 (ABS_X)
> Value 0
> Min 0
> Max 0 <-- upsets xorg
> Event code 1 (ABS_Y)
> Value 0
> Min 0
> Max 0
> Event code 47 (ABS_MT_SLOT)
> Value 0
> Min 0
> Max 31
> Event code 48 (ABS_MT_TOUCH_MAJOR)
> Value 0
> Min 0
> Max 255
> Event code 49 (ABS_MT_TOUCH_MINOR)
> Value 0
> Min 0
> Max 255
> Event code 53 (ABS_MT_POSITION_X)
> Value 0
> Min 0
> Max 1447
> Event code 54 (ABS_MT_POSITION_Y)
> Value 0
> Min 0
> Max 1071
> Event code 57 (ABS_MT_TRACKING_ID)
> Value 0
> Min 0
> Max 65535
> Event code 58 (ABS_MT_PRESSURE)
> Value 0
> Min 0
> Max 255
>
> I specified touchscreen-size-x and touchscreen-size-y in my devicetree.
> No idea why it is like this yet.

Thanks! I see the same problem on my side as well. I'm not using X so
I don't see a crash and didn't notice the error.

I'll work on fixing this.

Alistair