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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2014-03-28 00:43:00 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-03-28 09:02:00 -0700
commit421e08c41fda1f0c2ff6af81a67b491389b653a5 (patch)
treeed7512d06b79fb0f47fa1c4dfba86db2b6f9cdef /drivers/virt
parent6797b39e6f6f34c74177736e146406e894b9482b (diff)
downloadlinux-linaro-stable-421e08c41fda1f0c2ff6af81a67b491389b653a5.tar.gz
Input: synaptics - add manual min/max quirk
The new Lenovo Haswell series (-40's) contains a new Synaptics touchpad. However, these new Synaptics devices report bad axis ranges. Under Windows, it is not a problem because the Windows driver uses RMI4 over SMBus to talk to the device. Under Linux, we are using the PS/2 fallback interface and it occurs the reported ranges are wrong. Of course, it would be too easy to have only one range for the whole series, each touchpad seems to be calibrated in a different way. We can not use SMBus to get the actual range because I suspect the firmware will switch into the SMBus mode and stop talking through PS/2 (this is the case for hybrid HID over I2C / PS/2 Synaptics touchpads). So as a temporary solution (until RMI4 land into upstream), start a new list of quirks with the min/max manually set. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> CC: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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