kernel.git/drivers/input/keyboard/mpr121_touchkey.c, branch linux-3.2.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-3.2.y2011-06-29T08:32:49ZInput: mpr121 - improve sensibility of touch key2011-06-29T08:32:49ZJiejing Zhang2011-06-29T08:28:21Zurn:sha1:c7b4a5d58bffdf3aa7f923319643af0ebf925515
The Quick Charge bit in Electrode conf register should be set in init
function. This bit was missed in chip's document, which may cause touch
controller charge too slow to generate an interrupt.
Also, adjust the default vlaue of touch and release threshold
to make touch key more sensitive, this fix touch may not sensitive
after setup with plastic case.
Signed-off-by: Jiejing Zhang <jiejing.zhang@freescale.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Input: add driver FSL MPR121 capacitive touch sensor2011-05-12T15:28:58ZZhang Jiejing2011-05-11T21:32:01Zurn:sha1:36682b81de32090f5c9fac165e71ab8939aab8c0
This patch adds basic support for Freescale MPR121 capacitive touch
sensor. It's an i2c controller with up to 12 capacitance sensing inputs.
Product information (data sheet, application notes) can be found here:
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPR121
Signed-off-by: Zhang Jiejing <jiejing.zhang@freescale.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>