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alistair23-linux/drivers/hid/i2c-hid
Brendan McGrath a89af4abdf HID: i2c-hid: Add sleep between POWER ON and RESET
Support for the Asus Touchpad was recently added. It turns out this
device can fail initialisation (and become unusable) when the RESET
command is sent too soon after the POWER ON command.

Unfortunately the i2c-hid specification does not specify the need for
a delay between these two commands. But it was discovered the Windows
driver has a 1ms delay.

As a result, this patch modifies the i2c-hid module to add a sleep
inbetween the POWER ON and RESET commands which lasts between 1ms and 5ms.

See https://github.com/vlasenko/hid-asus-dkms/issues/24 for further
details.

Signed-off-by: Brendan McGrath <redmcg@redmandi.dyndns.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-01-11 21:55:35 +01:00
..
Kconfig HID: i2c-hid: enhance Kconfig 2012-12-05 10:55:03 +01:00
Makefile HID: i2c-hid: introduce HID over i2c specification implementation 2012-11-19 11:04:38 +01:00
i2c-hid.c HID: i2c-hid: Add sleep between POWER ON and RESET 2017-01-11 21:55:35 +01:00