On Sun, 18 Jun 2017, Hans de Goede wrote: > Hi Jiri, Benjamin, > > As discussed with myself in the linux-input thread about adding > icn8505 (ACPI HID CHPN0001) devices to the icn8313 driver: > https://www.spinics.net/lists/linux-input/msg51916.html > > Unfortunately the ACPI node for this non HID compatible device has an > ACPI CID (compatility ID) of PNP0C50 causing the i2c-hid driver to bind, > which leads to the touchscreen not working (see the second patch > commit message for details). > > Although these 2 patches are not really pretty I believe they are the > best way to fix this. > > Note that even if I do add firmware upload support to the icn8318 driver, > we still have the issue left of i2c-hid doing a > dev_err(dev, "hid_descr_cmd failed") which is also undesirable. > > A normal system bootup should have no output for "dmesg --level=err", > this is esp. important for the flickerfree boot experience both Fedora > and Ubuntu have been working towards. Any _err kernel messages will > cause the splash screen to drop back to text-mode breaking the > flickerfree experience. So to silence that error we would need to > blacklist the CHPN0001 ACPI HID somewhere in the i2c-hid driver > anyways. Benjamin, as i2c-hid is mainly your playground, would you mind (n)Acking this? :) Thanks, -- Jiri Kosina SUSE Labs -- 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
