This patch enables ADC filtering on UCB1400 codec by default. The
benefit from this change is mostly on some Colibri boards where
the ADCSYNC pin of the UCB1400 codec isn't connected causing the
touchscreen to jitter very badly. This change has no visible
effect on boards where the ADCSYNC pin is connected.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Tested-by: NPalo Revak <palo@bielyvlk.sk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

it's a little too large for static line.
The ts is currently the only mainline user but Marek Vasut claims that
there is a battery driver in an ARM tree which also needs this function.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch splits ucb1400_ts into ucb1400_ts and ucb1400_core.
Since this chip supports more features than only touchscreen,
it was necessary to prepare it for feature addition. The
previous functionality is preserved by applying this patch.

[Build fixes for non-ARM by Stephen Rothwell and Takashi Iwai]
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>