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authorSoeren Sonnenburg <kernel@nn7.de>2007-07-20 00:29:32 -0400
committerDmitry Torokhov <dtor@insightbb.com>2007-07-20 00:29:32 -0400
commit5a6eb676d3bc4d7a6feab200a92437b62ad298da (patch)
treef4199c4161c046c43eb8ec96cd7fc09886dc044a /drivers/input/keyboard
parente6b20d8d62d87451f41365945b27202d7dadaee6 (diff)
Input: appletouch - improve powersaving for Geyser3 devices
The appletouch geyser3 devices found in the Intel Macs (and possibly some later PPC ones?) send a constant stream of packets after the first touch. This results in the kernel waking up around once every couple of milliseconds to process them, making it almost impossible to spend any significant amount of time in C3 state on a dynamic HZ kernel. Sending the mode initialization code makes the device shut up until it's touched again. This patch does so after receiving 10 packets with no interesting content. Signed-off-by: Soeren Sonnenburg <kernel@nn7.de> Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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